The Design and Implementation of the FreeBSD Operating System, Second Edition
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 

    1 /*-
    2  * Copyright (c) 2013 Cedric GROSS <c.gross@kreiz-it.fr>
    3  * Copyright (c) 2011 Intel Corporation
    4  * Copyright (c) 2007-2009
    5  *      Damien Bergamini <damien.bergamini@free.fr>
    6  * Copyright (c) 2008
    7  *      Benjamin Close <benjsc@FreeBSD.org>
    8  * Copyright (c) 2008 Sam Leffler, Errno Consulting
    9  *
   10  * Permission to use, copy, modify, and distribute this software for any
   11  * purpose with or without fee is hereby granted, provided that the above
   12  * copyright notice and this permission notice appear in all copies.
   13  *
   14  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   15  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   16  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
   17  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   18  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
   19  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
   20  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   21  */
   22 
   23 /*
   24  * Driver for Intel WiFi Link 4965 and 1000/5000/6000 Series 802.11 network
   25  * adapters.
   26  */
   27 
   28 #include <sys/cdefs.h>
   29 __FBSDID("$FreeBSD: releng/10.2/sys/dev/iwn/if_iwn.c 281480 2015-04-13 01:01:17Z eadler $");
   30 
   31 #include "opt_wlan.h"
   32 #include "opt_iwn.h"
   33 
   34 #include <sys/param.h>
   35 #include <sys/sockio.h>
   36 #include <sys/sysctl.h>
   37 #include <sys/mbuf.h>
   38 #include <sys/kernel.h>
   39 #include <sys/socket.h>
   40 #include <sys/systm.h>
   41 #include <sys/malloc.h>
   42 #include <sys/bus.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/queue.h>
   49 #include <sys/taskqueue.h>
   50 
   51 #include <machine/bus.h>
   52 #include <machine/resource.h>
   53 #include <machine/clock.h>
   54 
   55 #include <dev/pci/pcireg.h>
   56 #include <dev/pci/pcivar.h>
   57 
   58 #include <net/bpf.h>
   59 #include <net/if.h>
   60 #include <net/if_arp.h>
   61 #include <net/ethernet.h>
   62 #include <net/if_dl.h>
   63 #include <net/if_media.h>
   64 #include <net/if_types.h>
   65 
   66 #include <netinet/in.h>
   67 #include <netinet/in_systm.h>
   68 #include <netinet/in_var.h>
   69 #include <netinet/if_ether.h>
   70 #include <netinet/ip.h>
   71 
   72 #include <net80211/ieee80211_var.h>
   73 #include <net80211/ieee80211_radiotap.h>
   74 #include <net80211/ieee80211_regdomain.h>
   75 #include <net80211/ieee80211_ratectl.h>
   76 
   77 #include <dev/iwn/if_iwnreg.h>
   78 #include <dev/iwn/if_iwnvar.h>
   79 #include <dev/iwn/if_iwn_devid.h>
   80 
   81 struct iwn_ident {
   82         uint16_t        vendor;
   83         uint16_t        device;
   84         const char      *name;
   85 };
   86 
   87 static const struct iwn_ident iwn_ident_table[] = {
   88         { 0x8086, IWN_DID_6x05_1, "Intel Centrino Advanced-N 6205"              },
   89         { 0x8086, IWN_DID_1000_1, "Intel Centrino Wireless-N 1000"              },
   90         { 0x8086, IWN_DID_1000_2, "Intel Centrino Wireless-N 1000"              },
   91         { 0x8086, IWN_DID_6x05_2, "Intel Centrino Advanced-N 6205"              },
   92         { 0x8086, IWN_DID_6050_1, "Intel Centrino Advanced-N + WiMAX 6250"      },
   93         { 0x8086, IWN_DID_6050_2, "Intel Centrino Advanced-N + WiMAX 6250"      },
   94         { 0x8086, IWN_DID_x030_1, "Intel Centrino Wireless-N 1030"              },
   95         { 0x8086, IWN_DID_x030_2, "Intel Centrino Wireless-N 1030"              },
   96         { 0x8086, IWN_DID_x030_3, "Intel Centrino Advanced-N 6230"              },
   97         { 0x8086, IWN_DID_x030_4, "Intel Centrino Advanced-N 6230"              },
   98         { 0x8086, IWN_DID_6150_1, "Intel Centrino Wireless-N + WiMAX 6150"      },
   99         { 0x8086, IWN_DID_6150_2, "Intel Centrino Wireless-N + WiMAX 6150"      },
  100         { 0x8086, IWN_DID_2x30_1, "Intel Centrino Wireless-N 2230"              },
  101         { 0x8086, IWN_DID_2x30_2, "Intel Centrino Wireless-N 2230"              },
  102         { 0x8086, IWN_DID_130_1, "Intel Centrino Wireless-N 130"                },
  103         { 0x8086, IWN_DID_130_2, "Intel Centrino Wireless-N 130"                },
  104         { 0x8086, IWN_DID_100_1, "Intel Centrino Wireless-N 100"                },
  105         { 0x8086, IWN_DID_100_2, "Intel Centrino Wireless-N 100"                },
  106         { 0x8086, IWN_DID_4965_1, "Intel Wireless WiFi Link 4965"               },
  107         { 0x8086, IWN_DID_6x00_1, "Intel Centrino Ultimate-N 6300"              },
  108         { 0x8086, IWN_DID_6x00_2, "Intel Centrino Advanced-N 6200"              },
  109         { 0x8086, IWN_DID_4965_2, "Intel Wireless WiFi Link 4965"               },
  110         { 0x8086, IWN_DID_4965_3, "Intel Wireless WiFi Link 4965"               },
  111         { 0x8086, IWN_DID_5x00_1, "Intel WiFi Link 5100"                        },
  112         { 0x8086, IWN_DID_4965_4, "Intel Wireless WiFi Link 4965"               },
  113         { 0x8086, IWN_DID_5x00_3, "Intel Ultimate N WiFi Link 5300"             },
  114         { 0x8086, IWN_DID_5x00_4, "Intel Ultimate N WiFi Link 5300"             },
  115         { 0x8086, IWN_DID_5x00_2, "Intel WiFi Link 5100"                        },
  116         { 0x8086, IWN_DID_6x00_3, "Intel Centrino Ultimate-N 6300"              },
  117         { 0x8086, IWN_DID_6x00_4, "Intel Centrino Advanced-N 6200"              },
  118         { 0x8086, IWN_DID_5x50_1, "Intel WiMAX/WiFi Link 5350"                  },
  119         { 0x8086, IWN_DID_5x50_2, "Intel WiMAX/WiFi Link 5350"                  },
  120         { 0x8086, IWN_DID_5x50_3, "Intel WiMAX/WiFi Link 5150"                  },
  121         { 0x8086, IWN_DID_5x50_4, "Intel WiMAX/WiFi Link 5150"                  },
  122         { 0, 0, NULL }
  123 };
  124 
  125 static int      iwn_probe(device_t);
  126 static int      iwn_attach(device_t);
  127 static int      iwn4965_attach(struct iwn_softc *, uint16_t);
  128 static int      iwn5000_attach(struct iwn_softc *, uint16_t);
  129 static void     iwn_radiotap_attach(struct iwn_softc *);
  130 static void     iwn_sysctlattach(struct iwn_softc *);
  131 static struct ieee80211vap *iwn_vap_create(struct ieee80211com *,
  132                     const char [IFNAMSIZ], int, enum ieee80211_opmode, int,
  133                     const uint8_t [IEEE80211_ADDR_LEN],
  134                     const uint8_t [IEEE80211_ADDR_LEN]);
  135 static void     iwn_vap_delete(struct ieee80211vap *);
  136 static int      iwn_detach(device_t);
  137 static int      iwn_shutdown(device_t);
  138 static int      iwn_suspend(device_t);
  139 static int      iwn_resume(device_t);
  140 static int      iwn_nic_lock(struct iwn_softc *);
  141 static int      iwn_eeprom_lock(struct iwn_softc *);
  142 static int      iwn_init_otprom(struct iwn_softc *);
  143 static int      iwn_read_prom_data(struct iwn_softc *, uint32_t, void *, int);
  144 static void     iwn_dma_map_addr(void *, bus_dma_segment_t *, int, int);
  145 static int      iwn_dma_contig_alloc(struct iwn_softc *, struct iwn_dma_info *,
  146                     void **, bus_size_t, bus_size_t);
  147 static void     iwn_dma_contig_free(struct iwn_dma_info *);
  148 static int      iwn_alloc_sched(struct iwn_softc *);
  149 static void     iwn_free_sched(struct iwn_softc *);
  150 static int      iwn_alloc_kw(struct iwn_softc *);
  151 static void     iwn_free_kw(struct iwn_softc *);
  152 static int      iwn_alloc_ict(struct iwn_softc *);
  153 static void     iwn_free_ict(struct iwn_softc *);
  154 static int      iwn_alloc_fwmem(struct iwn_softc *);
  155 static void     iwn_free_fwmem(struct iwn_softc *);
  156 static int      iwn_alloc_rx_ring(struct iwn_softc *, struct iwn_rx_ring *);
  157 static void     iwn_reset_rx_ring(struct iwn_softc *, struct iwn_rx_ring *);
  158 static void     iwn_free_rx_ring(struct iwn_softc *, struct iwn_rx_ring *);
  159 static int      iwn_alloc_tx_ring(struct iwn_softc *, struct iwn_tx_ring *,
  160                     int);
  161 static void     iwn_reset_tx_ring(struct iwn_softc *, struct iwn_tx_ring *);
  162 static void     iwn_free_tx_ring(struct iwn_softc *, struct iwn_tx_ring *);
  163 static void     iwn5000_ict_reset(struct iwn_softc *);
  164 static int      iwn_read_eeprom(struct iwn_softc *,
  165                     uint8_t macaddr[IEEE80211_ADDR_LEN]);
  166 static void     iwn4965_read_eeprom(struct iwn_softc *);
  167 #ifdef  IWN_DEBUG
  168 static void     iwn4965_print_power_group(struct iwn_softc *, int);
  169 #endif
  170 static void     iwn5000_read_eeprom(struct iwn_softc *);
  171 static uint32_t iwn_eeprom_channel_flags(struct iwn_eeprom_chan *);
  172 static void     iwn_read_eeprom_band(struct iwn_softc *, int);
  173 static void     iwn_read_eeprom_ht40(struct iwn_softc *, int);
  174 static void     iwn_read_eeprom_channels(struct iwn_softc *, int, uint32_t);
  175 static struct iwn_eeprom_chan *iwn_find_eeprom_channel(struct iwn_softc *,
  176                     struct ieee80211_channel *);
  177 static int      iwn_setregdomain(struct ieee80211com *,
  178                     struct ieee80211_regdomain *, int,
  179                     struct ieee80211_channel[]);
  180 static void     iwn_read_eeprom_enhinfo(struct iwn_softc *);
  181 static struct ieee80211_node *iwn_node_alloc(struct ieee80211vap *,
  182                     const uint8_t mac[IEEE80211_ADDR_LEN]);
  183 static void     iwn_newassoc(struct ieee80211_node *, int);
  184 static int      iwn_media_change(struct ifnet *);
  185 static int      iwn_newstate(struct ieee80211vap *, enum ieee80211_state, int);
  186 static void     iwn_calib_timeout(void *);
  187 static void     iwn_rx_phy(struct iwn_softc *, struct iwn_rx_desc *,
  188                     struct iwn_rx_data *);
  189 static void     iwn_rx_done(struct iwn_softc *, struct iwn_rx_desc *,
  190                     struct iwn_rx_data *);
  191 static void     iwn_rx_compressed_ba(struct iwn_softc *, struct iwn_rx_desc *,
  192                     struct iwn_rx_data *);
  193 static void     iwn5000_rx_calib_results(struct iwn_softc *,
  194                     struct iwn_rx_desc *, struct iwn_rx_data *);
  195 static void     iwn_rx_statistics(struct iwn_softc *, struct iwn_rx_desc *,
  196                     struct iwn_rx_data *);
  197 static void     iwn4965_tx_done(struct iwn_softc *, struct iwn_rx_desc *,
  198                     struct iwn_rx_data *);
  199 static void     iwn5000_tx_done(struct iwn_softc *, struct iwn_rx_desc *,
  200                     struct iwn_rx_data *);
  201 static void     iwn_tx_done(struct iwn_softc *, struct iwn_rx_desc *, int,
  202                     uint8_t);
  203 static void     iwn_ampdu_tx_done(struct iwn_softc *, int, int, int, void *);
  204 static void     iwn_cmd_done(struct iwn_softc *, struct iwn_rx_desc *);
  205 static void     iwn_notif_intr(struct iwn_softc *);
  206 static void     iwn_wakeup_intr(struct iwn_softc *);
  207 static void     iwn_rftoggle_intr(struct iwn_softc *);
  208 static void     iwn_fatal_intr(struct iwn_softc *);
  209 static void     iwn_intr(void *);
  210 static void     iwn4965_update_sched(struct iwn_softc *, int, int, uint8_t,
  211                     uint16_t);
  212 static void     iwn5000_update_sched(struct iwn_softc *, int, int, uint8_t,
  213                     uint16_t);
  214 #ifdef notyet
  215 static void     iwn5000_reset_sched(struct iwn_softc *, int, int);
  216 #endif
  217 static int      iwn_tx_data(struct iwn_softc *, struct mbuf *,
  218                     struct ieee80211_node *);
  219 static int      iwn_tx_data_raw(struct iwn_softc *, struct mbuf *,
  220                     struct ieee80211_node *,
  221                     const struct ieee80211_bpf_params *params);
  222 static int      iwn_raw_xmit(struct ieee80211_node *, struct mbuf *,
  223                     const struct ieee80211_bpf_params *);
  224 static void     iwn_start(struct ifnet *);
  225 static void     iwn_start_locked(struct ifnet *);
  226 static void     iwn_watchdog(void *);
  227 static int      iwn_ioctl(struct ifnet *, u_long, caddr_t);
  228 static int      iwn_cmd(struct iwn_softc *, int, const void *, int, int);
  229 static int      iwn4965_add_node(struct iwn_softc *, struct iwn_node_info *,
  230                     int);
  231 static int      iwn5000_add_node(struct iwn_softc *, struct iwn_node_info *,
  232                     int);
  233 static int      iwn_set_link_quality(struct iwn_softc *,
  234                     struct ieee80211_node *);
  235 static int      iwn_add_broadcast_node(struct iwn_softc *, int);
  236 static int      iwn_updateedca(struct ieee80211com *);
  237 static void     iwn_update_mcast(struct ifnet *);
  238 static void     iwn_set_led(struct iwn_softc *, uint8_t, uint8_t, uint8_t);
  239 static int      iwn_set_critical_temp(struct iwn_softc *);
  240 static int      iwn_set_timing(struct iwn_softc *, struct ieee80211_node *);
  241 static void     iwn4965_power_calibration(struct iwn_softc *, int);
  242 static int      iwn4965_set_txpower(struct iwn_softc *,
  243                     struct ieee80211_channel *, int);
  244 static int      iwn5000_set_txpower(struct iwn_softc *,
  245                     struct ieee80211_channel *, int);
  246 static int      iwn4965_get_rssi(struct iwn_softc *, struct iwn_rx_stat *);
  247 static int      iwn5000_get_rssi(struct iwn_softc *, struct iwn_rx_stat *);
  248 static int      iwn_get_noise(const struct iwn_rx_general_stats *);
  249 static int      iwn4965_get_temperature(struct iwn_softc *);
  250 static int      iwn5000_get_temperature(struct iwn_softc *);
  251 static int      iwn_init_sensitivity(struct iwn_softc *);
  252 static void     iwn_collect_noise(struct iwn_softc *,
  253                     const struct iwn_rx_general_stats *);
  254 static int      iwn4965_init_gains(struct iwn_softc *);
  255 static int      iwn5000_init_gains(struct iwn_softc *);
  256 static int      iwn4965_set_gains(struct iwn_softc *);
  257 static int      iwn5000_set_gains(struct iwn_softc *);
  258 static void     iwn_tune_sensitivity(struct iwn_softc *,
  259                     const struct iwn_rx_stats *);
  260 static int      iwn_send_sensitivity(struct iwn_softc *);
  261 static int      iwn_set_pslevel(struct iwn_softc *, int, int, int);
  262 static int      iwn_send_btcoex(struct iwn_softc *);
  263 static int      iwn_send_advanced_btcoex(struct iwn_softc *);
  264 static int      iwn5000_runtime_calib(struct iwn_softc *);
  265 static int      iwn_config(struct iwn_softc *);
  266 static uint8_t  *ieee80211_add_ssid(uint8_t *, const uint8_t *, u_int);
  267 static int      iwn_scan(struct iwn_softc *);
  268 static int      iwn_auth(struct iwn_softc *, struct ieee80211vap *vap);
  269 static int      iwn_run(struct iwn_softc *, struct ieee80211vap *vap);
  270 static int      iwn_ampdu_rx_start(struct ieee80211_node *,
  271                     struct ieee80211_rx_ampdu *, int, int, int);
  272 static void     iwn_ampdu_rx_stop(struct ieee80211_node *,
  273                     struct ieee80211_rx_ampdu *);
  274 static int      iwn_addba_request(struct ieee80211_node *,
  275                     struct ieee80211_tx_ampdu *, int, int, int);
  276 static int      iwn_addba_response(struct ieee80211_node *,
  277                     struct ieee80211_tx_ampdu *, int, int, int);
  278 static int      iwn_ampdu_tx_start(struct ieee80211com *,
  279                     struct ieee80211_node *, uint8_t);
  280 static void     iwn_ampdu_tx_stop(struct ieee80211_node *,
  281                     struct ieee80211_tx_ampdu *);
  282 static void     iwn4965_ampdu_tx_start(struct iwn_softc *,
  283                     struct ieee80211_node *, int, uint8_t, uint16_t);
  284 static void     iwn4965_ampdu_tx_stop(struct iwn_softc *, int,
  285                     uint8_t, uint16_t);
  286 static void     iwn5000_ampdu_tx_start(struct iwn_softc *,
  287                     struct ieee80211_node *, int, uint8_t, uint16_t);
  288 static void     iwn5000_ampdu_tx_stop(struct iwn_softc *, int,
  289                     uint8_t, uint16_t);
  290 static int      iwn5000_query_calibration(struct iwn_softc *);
  291 static int      iwn5000_send_calibration(struct iwn_softc *);
  292 static int      iwn5000_send_wimax_coex(struct iwn_softc *);
  293 static int      iwn5000_crystal_calib(struct iwn_softc *);
  294 static int      iwn5000_temp_offset_calib(struct iwn_softc *);
  295 static int      iwn4965_post_alive(struct iwn_softc *);
  296 static int      iwn5000_post_alive(struct iwn_softc *);
  297 static int      iwn4965_load_bootcode(struct iwn_softc *, const uint8_t *,
  298                     int);
  299 static int      iwn4965_load_firmware(struct iwn_softc *);
  300 static int      iwn5000_load_firmware_section(struct iwn_softc *, uint32_t,
  301                     const uint8_t *, int);
  302 static int      iwn5000_load_firmware(struct iwn_softc *);
  303 static int      iwn_read_firmware_leg(struct iwn_softc *,
  304                     struct iwn_fw_info *);
  305 static int      iwn_read_firmware_tlv(struct iwn_softc *,
  306                     struct iwn_fw_info *, uint16_t);
  307 static int      iwn_read_firmware(struct iwn_softc *);
  308 static int      iwn_clock_wait(struct iwn_softc *);
  309 static int      iwn_apm_init(struct iwn_softc *);
  310 static void     iwn_apm_stop_master(struct iwn_softc *);
  311 static void     iwn_apm_stop(struct iwn_softc *);
  312 static int      iwn4965_nic_config(struct iwn_softc *);
  313 static int      iwn5000_nic_config(struct iwn_softc *);
  314 static int      iwn_hw_prepare(struct iwn_softc *);
  315 static int      iwn_hw_init(struct iwn_softc *);
  316 static void     iwn_hw_stop(struct iwn_softc *);
  317 static void     iwn_radio_on(void *, int);
  318 static void     iwn_radio_off(void *, int);
  319 static void     iwn_init_locked(struct iwn_softc *);
  320 static void     iwn_init(void *);
  321 static void     iwn_stop_locked(struct iwn_softc *);
  322 static void     iwn_stop(struct iwn_softc *);
  323 static void     iwn_scan_start(struct ieee80211com *);
  324 static void     iwn_scan_end(struct ieee80211com *);
  325 static void     iwn_set_channel(struct ieee80211com *);
  326 static void     iwn_scan_curchan(struct ieee80211_scan_state *, unsigned long);
  327 static void     iwn_scan_mindwell(struct ieee80211_scan_state *);
  328 static void     iwn_hw_reset(void *, int);
  329 #ifdef  IWN_DEBUG
  330 static char     *iwn_get_csr_string(int);
  331 static void     iwn_debug_register(struct iwn_softc *);
  332 #endif
  333 
  334 #ifdef  IWN_DEBUG
  335 enum {
  336         IWN_DEBUG_XMIT          = 0x00000001,   /* basic xmit operation */
  337         IWN_DEBUG_RECV          = 0x00000002,   /* basic recv operation */
  338         IWN_DEBUG_STATE         = 0x00000004,   /* 802.11 state transitions */
  339         IWN_DEBUG_TXPOW         = 0x00000008,   /* tx power processing */
  340         IWN_DEBUG_RESET         = 0x00000010,   /* reset processing */
  341         IWN_DEBUG_OPS           = 0x00000020,   /* iwn_ops processing */
  342         IWN_DEBUG_BEACON        = 0x00000040,   /* beacon handling */
  343         IWN_DEBUG_WATCHDOG      = 0x00000080,   /* watchdog timeout */
  344         IWN_DEBUG_INTR          = 0x00000100,   /* ISR */
  345         IWN_DEBUG_CALIBRATE     = 0x00000200,   /* periodic calibration */
  346         IWN_DEBUG_NODE          = 0x00000400,   /* node management */
  347         IWN_DEBUG_LED           = 0x00000800,   /* led management */
  348         IWN_DEBUG_CMD           = 0x00001000,   /* cmd submission */
  349         IWN_DEBUG_TXRATE        = 0x00002000,   /* TX rate debugging */
  350         IWN_DEBUG_PWRSAVE       = 0x00004000,   /* Power save operations */
  351         IWN_DEBUG_REGISTER      = 0x20000000,   /* print chipset register */
  352         IWN_DEBUG_TRACE         = 0x40000000,   /* Print begin and start driver function */
  353         IWN_DEBUG_FATAL         = 0x80000000,   /* fatal errors */
  354         IWN_DEBUG_ANY           = 0xffffffff
  355 };
  356 
  357 #define DPRINTF(sc, m, fmt, ...) do {                   \
  358         if (sc->sc_debug & (m))                         \
  359                 printf(fmt, __VA_ARGS__);               \
  360 } while (0)
  361 
  362 static const char *
  363 iwn_intr_str(uint8_t cmd)
  364 {
  365         switch (cmd) {
  366         /* Notifications */
  367         case IWN_UC_READY:              return "UC_READY";
  368         case IWN_ADD_NODE_DONE:         return "ADD_NODE_DONE";
  369         case IWN_TX_DONE:               return "TX_DONE";
  370         case IWN_START_SCAN:            return "START_SCAN";
  371         case IWN_STOP_SCAN:             return "STOP_SCAN";
  372         case IWN_RX_STATISTICS:         return "RX_STATS";
  373         case IWN_BEACON_STATISTICS:     return "BEACON_STATS";
  374         case IWN_STATE_CHANGED:         return "STATE_CHANGED";
  375         case IWN_BEACON_MISSED:         return "BEACON_MISSED";
  376         case IWN_RX_PHY:                return "RX_PHY";
  377         case IWN_MPDU_RX_DONE:          return "MPDU_RX_DONE";
  378         case IWN_RX_DONE:               return "RX_DONE";
  379 
  380         /* Command Notifications */
  381         case IWN_CMD_RXON:              return "IWN_CMD_RXON";
  382         case IWN_CMD_RXON_ASSOC:        return "IWN_CMD_RXON_ASSOC";
  383         case IWN_CMD_EDCA_PARAMS:       return "IWN_CMD_EDCA_PARAMS";
  384         case IWN_CMD_TIMING:            return "IWN_CMD_TIMING";
  385         case IWN_CMD_LINK_QUALITY:      return "IWN_CMD_LINK_QUALITY";
  386         case IWN_CMD_SET_LED:           return "IWN_CMD_SET_LED";
  387         case IWN5000_CMD_WIMAX_COEX:    return "IWN5000_CMD_WIMAX_COEX";
  388         case IWN5000_CMD_CALIB_CONFIG:  return "IWN5000_CMD_CALIB_CONFIG";
  389         case IWN5000_CMD_CALIB_RESULT:  return "IWN5000_CMD_CALIB_RESULT";
  390         case IWN5000_CMD_CALIB_COMPLETE: return "IWN5000_CMD_CALIB_COMPLETE";
  391         case IWN_CMD_SET_POWER_MODE:    return "IWN_CMD_SET_POWER_MODE";
  392         case IWN_CMD_SCAN:              return "IWN_CMD_SCAN";
  393         case IWN_CMD_SCAN_RESULTS:      return "IWN_CMD_SCAN_RESULTS";
  394         case IWN_CMD_TXPOWER:           return "IWN_CMD_TXPOWER";
  395         case IWN_CMD_TXPOWER_DBM:       return "IWN_CMD_TXPOWER_DBM";
  396         case IWN5000_CMD_TX_ANT_CONFIG: return "IWN5000_CMD_TX_ANT_CONFIG";
  397         case IWN_CMD_BT_COEX:           return "IWN_CMD_BT_COEX";
  398         case IWN_CMD_SET_CRITICAL_TEMP: return "IWN_CMD_SET_CRITICAL_TEMP";
  399         case IWN_CMD_SET_SENSITIVITY:   return "IWN_CMD_SET_SENSITIVITY";
  400         case IWN_CMD_PHY_CALIB:         return "IWN_CMD_PHY_CALIB";
  401         }
  402         return "UNKNOWN INTR NOTIF/CMD";
  403 }
  404 #else
  405 #define DPRINTF(sc, m, fmt, ...) do { (void) sc; } while (0)
  406 #endif
  407 
  408 static device_method_t iwn_methods[] = {
  409         /* Device interface */
  410         DEVMETHOD(device_probe,         iwn_probe),
  411         DEVMETHOD(device_attach,        iwn_attach),
  412         DEVMETHOD(device_detach,        iwn_detach),
  413         DEVMETHOD(device_shutdown,      iwn_shutdown),
  414         DEVMETHOD(device_suspend,       iwn_suspend),
  415         DEVMETHOD(device_resume,        iwn_resume),
  416 
  417         DEVMETHOD_END
  418 };
  419 
  420 static driver_t iwn_driver = {
  421         "iwn",
  422         iwn_methods,
  423         sizeof(struct iwn_softc)
  424 };
  425 static devclass_t iwn_devclass;
  426 
  427 DRIVER_MODULE(iwn, pci, iwn_driver, iwn_devclass, NULL, NULL);
  428 
  429 MODULE_VERSION(iwn, 1);
  430 
  431 MODULE_DEPEND(iwn, firmware, 1, 1, 1);
  432 MODULE_DEPEND(iwn, pci, 1, 1, 1);
  433 MODULE_DEPEND(iwn, wlan, 1, 1, 1);
  434 
  435 static int
  436 iwn_probe(device_t dev)
  437 {
  438         const struct iwn_ident *ident;
  439 
  440         for (ident = iwn_ident_table; ident->name != NULL; ident++) {
  441                 if (pci_get_vendor(dev) == ident->vendor &&
  442                     pci_get_device(dev) == ident->device) {
  443                         device_set_desc(dev, ident->name);
  444                         return (BUS_PROBE_DEFAULT);
  445                 }
  446         }
  447         return ENXIO;
  448 }
  449 
  450 static int
  451 iwn_attach(device_t dev)
  452 {
  453         struct iwn_softc *sc = (struct iwn_softc *)device_get_softc(dev);
  454         struct ieee80211com *ic;
  455         struct ifnet *ifp;
  456         int i, error, rid;
  457         uint8_t macaddr[IEEE80211_ADDR_LEN];
  458 
  459         sc->sc_dev = dev;
  460 
  461 #ifdef  IWN_DEBUG
  462         error = resource_int_value(device_get_name(sc->sc_dev),
  463             device_get_unit(sc->sc_dev), "debug", &(sc->sc_debug));
  464         if (error != 0)
  465                 sc->sc_debug = 0;
  466 #else
  467         sc->sc_debug = 0;
  468 #endif
  469 
  470         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: begin\n",__func__);
  471 
  472         /*
  473          * Get the offset of the PCI Express Capability Structure in PCI
  474          * Configuration Space.
  475          */
  476         error = pci_find_cap(dev, PCIY_EXPRESS, &sc->sc_cap_off);
  477         if (error != 0) {
  478                 device_printf(dev, "PCIe capability structure not found!\n");
  479                 return error;
  480         }
  481 
  482         /* Clear device-specific "PCI retry timeout" register (41h). */
  483         pci_write_config(dev, 0x41, 0, 1);
  484 
  485         /* Enable bus-mastering. */
  486         pci_enable_busmaster(dev);
  487 
  488         rid = PCIR_BAR(0);
  489         sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
  490             RF_ACTIVE);
  491         if (sc->mem == NULL) {
  492                 device_printf(dev, "can't map mem space\n");
  493                 error = ENOMEM;
  494                 return error;
  495         }
  496         sc->sc_st = rman_get_bustag(sc->mem);
  497         sc->sc_sh = rman_get_bushandle(sc->mem);
  498 
  499         i = 1;
  500         rid = 0;
  501         if (pci_alloc_msi(dev, &i) == 0)
  502                 rid = 1;
  503         /* Install interrupt handler. */
  504         sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE |
  505             (rid != 0 ? 0 : RF_SHAREABLE));
  506         if (sc->irq == NULL) {
  507                 device_printf(dev, "can't map interrupt\n");
  508                 error = ENOMEM;
  509                 goto fail;
  510         }
  511 
  512         IWN_LOCK_INIT(sc);
  513 
  514         /* Read hardware revision and attach. */
  515         sc->hw_type = (IWN_READ(sc, IWN_HW_REV) >> IWN_HW_REV_TYPE_SHIFT)
  516             & IWN_HW_REV_TYPE_MASK;
  517         sc->subdevice_id = pci_get_subdevice(dev);
  518         if (sc->hw_type == IWN_HW_REV_TYPE_4965)
  519                 error = iwn4965_attach(sc, pci_get_device(dev));
  520         else
  521                 error = iwn5000_attach(sc, pci_get_device(dev));
  522         if (error != 0) {
  523                 device_printf(dev, "could not attach device, error %d\n",
  524                     error);
  525                 goto fail;
  526         }
  527 
  528         if ((error = iwn_hw_prepare(sc)) != 0) {
  529                 device_printf(dev, "hardware not ready, error %d\n", error);
  530                 goto fail;
  531         }
  532 
  533         /* Allocate DMA memory for firmware transfers. */
  534         if ((error = iwn_alloc_fwmem(sc)) != 0) {
  535                 device_printf(dev,
  536                     "could not allocate memory for firmware, error %d\n",
  537                     error);
  538                 goto fail;
  539         }
  540 
  541         /* Allocate "Keep Warm" page. */
  542         if ((error = iwn_alloc_kw(sc)) != 0) {
  543                 device_printf(dev,
  544                     "could not allocate keep warm page, error %d\n", error);
  545                 goto fail;
  546         }
  547 
  548         /* Allocate ICT table for 5000 Series. */
  549         if (sc->hw_type != IWN_HW_REV_TYPE_4965 &&
  550             (error = iwn_alloc_ict(sc)) != 0) {
  551                 device_printf(dev, "could not allocate ICT table, error %d\n",
  552                     error);
  553                 goto fail;
  554         }
  555 
  556         /* Allocate TX scheduler "rings". */
  557         if ((error = iwn_alloc_sched(sc)) != 0) {
  558                 device_printf(dev,
  559                     "could not allocate TX scheduler rings, error %d\n", error);
  560                 goto fail;
  561         }
  562 
  563         /* Allocate TX rings (16 on 4965AGN, 20 on >=5000). */
  564         for (i = 0; i < sc->ntxqs; i++) {
  565                 if ((error = iwn_alloc_tx_ring(sc, &sc->txq[i], i)) != 0) {
  566                         device_printf(dev,
  567                             "could not allocate TX ring %d, error %d\n", i,
  568                             error);
  569                         goto fail;
  570                 }
  571         }
  572 
  573         /* Allocate RX ring. */
  574         if ((error = iwn_alloc_rx_ring(sc, &sc->rxq)) != 0) {
  575                 device_printf(dev, "could not allocate RX ring, error %d\n",
  576                     error);
  577                 goto fail;
  578         }
  579 
  580         /* Clear pending interrupts. */
  581         IWN_WRITE(sc, IWN_INT, 0xffffffff);
  582 
  583         ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211);
  584         if (ifp == NULL) {
  585                 device_printf(dev, "can not allocate ifnet structure\n");
  586                 goto fail;
  587         }
  588 
  589         ic = ifp->if_l2com;
  590         ic->ic_ifp = ifp;
  591         ic->ic_phytype = IEEE80211_T_OFDM;      /* not only, but not used */
  592         ic->ic_opmode = IEEE80211_M_STA;        /* default to BSS mode */
  593 
  594         /* Set device capabilities. */
  595         ic->ic_caps =
  596                   IEEE80211_C_STA               /* station mode supported */
  597                 | IEEE80211_C_MONITOR           /* monitor mode supported */
  598                 | IEEE80211_C_BGSCAN            /* background scanning */
  599                 | IEEE80211_C_TXPMGT            /* tx power management */
  600                 | IEEE80211_C_SHSLOT            /* short slot time supported */
  601                 | IEEE80211_C_WPA
  602                 | IEEE80211_C_SHPREAMBLE        /* short preamble supported */
  603 #if 0
  604                 | IEEE80211_C_IBSS              /* ibss/adhoc mode */
  605 #endif
  606                 | IEEE80211_C_WME               /* WME */
  607                 | IEEE80211_C_PMGT              /* Station-side power mgmt */
  608                 ;
  609 
  610         /* Read MAC address, channels, etc from EEPROM. */
  611         if ((error = iwn_read_eeprom(sc, macaddr)) != 0) {
  612                 device_printf(dev, "could not read EEPROM, error %d\n",
  613                     error);
  614                 goto fail;
  615         }
  616 
  617         /* Count the number of available chains. */
  618         sc->ntxchains =
  619             ((sc->txchainmask >> 2) & 1) +
  620             ((sc->txchainmask >> 1) & 1) +
  621             ((sc->txchainmask >> 0) & 1);
  622         sc->nrxchains =
  623             ((sc->rxchainmask >> 2) & 1) +
  624             ((sc->rxchainmask >> 1) & 1) +
  625             ((sc->rxchainmask >> 0) & 1);
  626         if (bootverbose) {
  627                 device_printf(dev, "MIMO %dT%dR, %.4s, address %6D\n",
  628                     sc->ntxchains, sc->nrxchains, sc->eeprom_domain,
  629                     macaddr, ":");
  630         }
  631 
  632         if (sc->sc_flags & IWN_FLAG_HAS_11N) {
  633                 ic->ic_rxstream = sc->nrxchains;
  634                 ic->ic_txstream = sc->ntxchains;
  635 
  636                 /*
  637                  * The NICs we currently support cap out at 2x2 support
  638                  * separate from the chains being used.
  639                  *
  640                  * This is a total hack to work around that until some
  641                  * per-device method is implemented to return the
  642                  * actual stream support.
  643                  */
  644                 if (ic->ic_rxstream > 2)
  645                         ic->ic_rxstream = 2;
  646                 if (ic->ic_txstream > 2)
  647                         ic->ic_txstream = 2;
  648 
  649                 ic->ic_htcaps =
  650                           IEEE80211_HTCAP_SMPS_OFF      /* SMPS mode disabled */
  651                         | IEEE80211_HTCAP_SHORTGI20     /* short GI in 20MHz */
  652                         | IEEE80211_HTCAP_CHWIDTH40     /* 40MHz channel width*/
  653                         | IEEE80211_HTCAP_SHORTGI40     /* short GI in 40MHz */
  654 #ifdef notyet
  655                         | IEEE80211_HTCAP_GREENFIELD
  656 #if IWN_RBUF_SIZE == 8192
  657                         | IEEE80211_HTCAP_MAXAMSDU_7935 /* max A-MSDU length */
  658 #else
  659                         | IEEE80211_HTCAP_MAXAMSDU_3839 /* max A-MSDU length */
  660 #endif
  661 #endif
  662                         /* s/w capabilities */
  663                         | IEEE80211_HTC_HT              /* HT operation */
  664                         | IEEE80211_HTC_AMPDU           /* tx A-MPDU */
  665 #ifdef notyet
  666                         | IEEE80211_HTC_AMSDU           /* tx A-MSDU */
  667 #endif
  668                         ;
  669         }
  670 
  671         if_initname(ifp, device_get_name(dev), device_get_unit(dev));
  672         ifp->if_softc = sc;
  673         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
  674         ifp->if_init = iwn_init;
  675         ifp->if_ioctl = iwn_ioctl;
  676         ifp->if_start = iwn_start;
  677         IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
  678         ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
  679         IFQ_SET_READY(&ifp->if_snd);
  680 
  681         ieee80211_ifattach(ic, macaddr);
  682         ic->ic_vap_create = iwn_vap_create;
  683         ic->ic_vap_delete = iwn_vap_delete;
  684         ic->ic_raw_xmit = iwn_raw_xmit;
  685         ic->ic_node_alloc = iwn_node_alloc;
  686         sc->sc_ampdu_rx_start = ic->ic_ampdu_rx_start;
  687         ic->ic_ampdu_rx_start = iwn_ampdu_rx_start;
  688         sc->sc_ampdu_rx_stop = ic->ic_ampdu_rx_stop;
  689         ic->ic_ampdu_rx_stop = iwn_ampdu_rx_stop;
  690         sc->sc_addba_request = ic->ic_addba_request;
  691         ic->ic_addba_request = iwn_addba_request;
  692         sc->sc_addba_response = ic->ic_addba_response;
  693         ic->ic_addba_response = iwn_addba_response;
  694         sc->sc_addba_stop = ic->ic_addba_stop;
  695         ic->ic_addba_stop = iwn_ampdu_tx_stop;
  696         ic->ic_newassoc = iwn_newassoc;
  697         ic->ic_wme.wme_update = iwn_updateedca;
  698         ic->ic_update_mcast = iwn_update_mcast;
  699         ic->ic_scan_start = iwn_scan_start;
  700         ic->ic_scan_end = iwn_scan_end;
  701         ic->ic_set_channel = iwn_set_channel;
  702         ic->ic_scan_curchan = iwn_scan_curchan;
  703         ic->ic_scan_mindwell = iwn_scan_mindwell;
  704         ic->ic_setregdomain = iwn_setregdomain;
  705 
  706         iwn_radiotap_attach(sc);
  707 
  708         callout_init_mtx(&sc->calib_to, &sc->sc_mtx, 0);
  709         callout_init_mtx(&sc->watchdog_to, &sc->sc_mtx, 0);
  710         TASK_INIT(&sc->sc_reinit_task, 0, iwn_hw_reset, sc);
  711         TASK_INIT(&sc->sc_radioon_task, 0, iwn_radio_on, sc);
  712         TASK_INIT(&sc->sc_radiooff_task, 0, iwn_radio_off, sc);
  713 
  714         iwn_sysctlattach(sc);
  715 
  716         /*
  717          * Hook our interrupt after all initialization is complete.
  718          */
  719         error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE,
  720             NULL, iwn_intr, sc, &sc->sc_ih);
  721         if (error != 0) {
  722                 device_printf(dev, "can't establish interrupt, error %d\n",
  723                     error);
  724                 goto fail;
  725         }
  726 
  727         if (bootverbose)
  728                 ieee80211_announce(ic);
  729         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__);
  730         return 0;
  731 fail:
  732         iwn_detach(dev);
  733         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end in error\n",__func__);
  734         return error;
  735 }
  736 
  737 static int
  738 iwn4965_attach(struct iwn_softc *sc, uint16_t pid)
  739 {
  740         struct iwn_ops *ops = &sc->ops;
  741 
  742         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
  743         ops->load_firmware = iwn4965_load_firmware;
  744         ops->read_eeprom = iwn4965_read_eeprom;
  745         ops->post_alive = iwn4965_post_alive;
  746         ops->nic_config = iwn4965_nic_config;
  747         ops->update_sched = iwn4965_update_sched;
  748         ops->get_temperature = iwn4965_get_temperature;
  749         ops->get_rssi = iwn4965_get_rssi;
  750         ops->set_txpower = iwn4965_set_txpower;
  751         ops->init_gains = iwn4965_init_gains;
  752         ops->set_gains = iwn4965_set_gains;
  753         ops->add_node = iwn4965_add_node;
  754         ops->tx_done = iwn4965_tx_done;
  755         ops->ampdu_tx_start = iwn4965_ampdu_tx_start;
  756         ops->ampdu_tx_stop = iwn4965_ampdu_tx_stop;
  757         sc->ntxqs = IWN4965_NTXQUEUES;
  758         sc->firstaggqueue = IWN4965_FIRSTAGGQUEUE;
  759         sc->ndmachnls = IWN4965_NDMACHNLS;
  760         sc->broadcast_id = IWN4965_ID_BROADCAST;
  761         sc->rxonsz = IWN4965_RXONSZ;
  762         sc->schedsz = IWN4965_SCHEDSZ;
  763         sc->fw_text_maxsz = IWN4965_FW_TEXT_MAXSZ;
  764         sc->fw_data_maxsz = IWN4965_FW_DATA_MAXSZ;
  765         sc->fwsz = IWN4965_FWSZ;
  766         sc->sched_txfact_addr = IWN4965_SCHED_TXFACT;
  767         sc->limits = &iwn4965_sensitivity_limits;
  768         sc->fwname = "iwn4965fw";
  769         /* Override chains masks, ROM is known to be broken. */
  770         sc->txchainmask = IWN_ANT_AB;
  771         sc->rxchainmask = IWN_ANT_ABC;
  772 
  773         DPRINTF(sc, IWN_DEBUG_TRACE, "%s: end\n",__func__);
  774 
  775         return 0;
  776 }
  777 
  778 static int
  779 iwn5000_attach(struct iwn_softc *sc, uint16_t pid)
  780 {
  781         struct iwn_ops *ops = &sc->ops;
  782 
  783         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
  784 
  785         ops->load_firmware = iwn5000_load_firmware;
  786         ops->read_eeprom = iwn5000_read_eeprom;
  787         ops->post_alive = iwn5000_post_alive;
  788         ops->nic_config = iwn5000_nic_config;
  789         ops->update_sched = iwn5000_update_sched;
  790         ops->get_temperature = iwn5000_get_temperature;
  791         ops->get_rssi = iwn5000_get_rssi;
  792         ops->set_txpower = iwn5000_set_txpower;
  793         ops->init_gains = iwn5000_init_gains;
  794         ops->set_gains = iwn5000_set_gains;
  795         ops->add_node = iwn5000_add_node;
  796         ops->tx_done = iwn5000_tx_done;
  797         ops->ampdu_tx_start = iwn5000_ampdu_tx_start;
  798         ops->ampdu_tx_stop = iwn5000_ampdu_tx_stop;
  799         sc->ntxqs = IWN5000_NTXQUEUES;
  800         sc->firstaggqueue = IWN5000_FIRSTAGGQUEUE;
  801         sc->ndmachnls = IWN5000_NDMACHNLS;
  802         sc->broadcast_id = IWN5000_ID_BROADCAST;
  803         sc->rxonsz = IWN5000_RXONSZ;
  804         sc->schedsz = IWN5000_SCHEDSZ;
  805         sc->fw_text_maxsz = IWN5000_FW_TEXT_MAXSZ;
  806         sc->fw_data_maxsz = IWN5000_FW_DATA_MAXSZ;
  807         sc->fwsz = IWN5000_FWSZ;
  808         sc->sched_txfact_addr = IWN5000_SCHED_TXFACT;
  809         sc->reset_noise_gain = IWN5000_PHY_CALIB_RESET_NOISE_GAIN;
  810         sc->noise_gain = IWN5000_PHY_CALIB_NOISE_GAIN;
  811 
  812         switch (sc->hw_type) {
  813         case IWN_HW_REV_TYPE_5100:
  814                 sc->limits = &iwn5000_sensitivity_limits;
  815                 sc->fwname = "iwn5000fw";
  816                 /* Override chains masks, ROM is known to be broken. */
  817                 sc->txchainmask = IWN_ANT_B;
  818                 sc->rxchainmask = IWN_ANT_AB;
  819                 break;
  820         case IWN_HW_REV_TYPE_5150:
  821                 sc->limits = &iwn5150_sensitivity_limits;
  822                 sc->fwname = "iwn5150fw";
  823                 break;
  824         case IWN_HW_REV_TYPE_5300:
  825         case IWN_HW_REV_TYPE_5350:
  826                 sc->limits = &iwn5000_sensitivity_limits;
  827                 sc->fwname = "iwn5000fw";
  828                 break;
  829         case IWN_HW_REV_TYPE_1000:
  830                 sc->limits = &iwn1000_sensitivity_limits;
  831                 sc->fwname = "iwn1000fw";
  832                 break;
  833         case IWN_HW_REV_TYPE_6000:
  834                 sc->limits = &iwn6000_sensitivity_limits;
  835                 sc->fwname = "iwn6000fw";
  836                 if (pid == 0x422c || pid == 0x4239) {
  837                         sc->sc_flags |= IWN_FLAG_INTERNAL_PA;
  838                         /* Override chains masks, ROM is known to be broken. */
  839                         sc->txchainmask = IWN_ANT_BC;
  840                         sc->rxchainmask = IWN_ANT_BC;
  841                 }
  842                 break;
  843         case IWN_HW_REV_TYPE_6050:
  844                 sc->limits = &iwn6000_sensitivity_limits;
  845                 sc->fwname = "iwn6050fw";
  846                 /* Override chains masks, ROM is known to be broken. */
  847                 sc->txchainmask = IWN_ANT_AB;
  848                 sc->rxchainmask = IWN_ANT_AB;
  849                 break;
  850         case IWN_HW_REV_TYPE_6005:
  851                 sc->limits = &iwn6000_sensitivity_limits;
  852                 if (pid != 0x0082 && pid != 0x0085) {
  853                         sc->fwname = "iwn6000g2bfw";
  854                         sc->sc_flags |= IWN_FLAG_ADV_BTCOEX;
  855                 } else
  856                         sc->fwname = "iwn6000g2afw";
  857                 break;
  858         default:
  859                 device_printf(sc->sc_dev, "adapter type %d not supported\n",
  860                     sc->hw_type);
  861                 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end in error\n",__func__);
  862                 return ENOTSUP;
  863         }
  864         return 0;
  865 }
  866 
  867 /*
  868  * Attach the interface to 802.11 radiotap.
  869  */
  870 static void
  871 iwn_radiotap_attach(struct iwn_softc *sc)
  872 {
  873         struct ifnet *ifp = sc->sc_ifp;
  874         struct ieee80211com *ic = ifp->if_l2com;
  875         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
  876         ieee80211_radiotap_attach(ic,
  877             &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
  878                 IWN_TX_RADIOTAP_PRESENT,
  879             &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
  880                 IWN_RX_RADIOTAP_PRESENT);
  881         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end\n", __func__);
  882 }
  883 
  884 static void
  885 iwn_sysctlattach(struct iwn_softc *sc)
  886 {
  887 #ifdef  IWN_DEBUG
  888         struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev);
  889         struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev);
  890 
  891         SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
  892             "debug", CTLFLAG_RW, &sc->sc_debug, sc->sc_debug,
  893                 "control debugging printfs");
  894 #endif
  895 }
  896 
  897 static struct ieee80211vap *
  898 iwn_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit,
  899     enum ieee80211_opmode opmode, int flags,
  900     const uint8_t bssid[IEEE80211_ADDR_LEN],
  901     const uint8_t mac[IEEE80211_ADDR_LEN])
  902 {
  903         struct iwn_vap *ivp;
  904         struct ieee80211vap *vap;
  905         uint8_t mac1[IEEE80211_ADDR_LEN];
  906         struct iwn_softc *sc = ic->ic_ifp->if_softc;
  907 
  908         if (!TAILQ_EMPTY(&ic->ic_vaps))         /* only one at a time */
  909                 return NULL;
  910 
  911         IEEE80211_ADDR_COPY(mac1, mac);
  912 
  913         ivp = (struct iwn_vap *) malloc(sizeof(struct iwn_vap),
  914             M_80211_VAP, M_NOWAIT | M_ZERO);
  915         if (ivp == NULL)
  916                 return NULL;
  917         vap = &ivp->iv_vap;
  918         ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac1);
  919         ivp->ctx = IWN_RXON_BSS_CTX;
  920         IEEE80211_ADDR_COPY(ivp->macaddr, mac1);
  921         vap->iv_bmissthreshold = 10;            /* override default */
  922         /* Override with driver methods. */
  923         ivp->iv_newstate = vap->iv_newstate;
  924         vap->iv_newstate = iwn_newstate;
  925         sc->ivap[IWN_RXON_BSS_CTX] = vap;
  926 
  927         ieee80211_ratectl_init(vap);
  928         /* Complete setup. */
  929         ieee80211_vap_attach(vap, iwn_media_change, ieee80211_media_status);
  930         ic->ic_opmode = opmode;
  931         return vap;
  932 }
  933 
  934 static void
  935 iwn_vap_delete(struct ieee80211vap *vap)
  936 {
  937         struct iwn_vap *ivp = IWN_VAP(vap);
  938 
  939         ieee80211_ratectl_deinit(vap);
  940         ieee80211_vap_detach(vap);
  941         free(ivp, M_80211_VAP);
  942 }
  943 
  944 static int
  945 iwn_detach(device_t dev)
  946 {
  947         struct iwn_softc *sc = device_get_softc(dev);
  948         struct ifnet *ifp = sc->sc_ifp;
  949         struct ieee80211com *ic;
  950         int qid;
  951 
  952         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
  953 
  954         if (ifp != NULL) {
  955                 ic = ifp->if_l2com;
  956 
  957                 ieee80211_draintask(ic, &sc->sc_reinit_task);
  958                 ieee80211_draintask(ic, &sc->sc_radioon_task);
  959                 ieee80211_draintask(ic, &sc->sc_radiooff_task);
  960 
  961                 iwn_stop(sc);
  962                 callout_drain(&sc->watchdog_to);
  963                 callout_drain(&sc->calib_to);
  964                 ieee80211_ifdetach(ic);
  965         }
  966 
  967         /* Uninstall interrupt handler. */
  968         if (sc->irq != NULL) {
  969                 bus_teardown_intr(dev, sc->irq, sc->sc_ih);
  970                 bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq),
  971                     sc->irq);
  972                 pci_release_msi(dev);
  973         }
  974 
  975         /* Free DMA resources. */
  976         iwn_free_rx_ring(sc, &sc->rxq);
  977         for (qid = 0; qid < sc->ntxqs; qid++)
  978                 iwn_free_tx_ring(sc, &sc->txq[qid]);
  979         iwn_free_sched(sc);
  980         iwn_free_kw(sc);
  981         if (sc->ict != NULL)
  982                 iwn_free_ict(sc);
  983         iwn_free_fwmem(sc);
  984 
  985         if (sc->mem != NULL)
  986                 bus_release_resource(dev, SYS_RES_MEMORY,
  987                     rman_get_rid(sc->mem), sc->mem);
  988 
  989         if (ifp != NULL)
  990                 if_free(ifp);
  991 
  992         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n", __func__);
  993         IWN_LOCK_DESTROY(sc);
  994         return 0;
  995 }
  996 
  997 static int
  998 iwn_shutdown(device_t dev)
  999 {
 1000         struct iwn_softc *sc = device_get_softc(dev);
 1001 
 1002         iwn_stop(sc);
 1003         return 0;
 1004 }
 1005 
 1006 static int
 1007 iwn_suspend(device_t dev)
 1008 {
 1009         struct iwn_softc *sc = device_get_softc(dev);
 1010         struct ieee80211com *ic = sc->sc_ifp->if_l2com;
 1011 
 1012         ieee80211_suspend_all(ic);
 1013         return 0;
 1014 }
 1015 
 1016 static int
 1017 iwn_resume(device_t dev)
 1018 {
 1019         struct iwn_softc *sc = device_get_softc(dev);
 1020         struct ieee80211com *ic = sc->sc_ifp->if_l2com;
 1021 
 1022         /* Clear device-specific "PCI retry timeout" register (41h). */
 1023         pci_write_config(dev, 0x41, 0, 1);
 1024 
 1025         ieee80211_resume_all(ic);
 1026         return 0;
 1027 }
 1028 
 1029 static int
 1030 iwn_nic_lock(struct iwn_softc *sc)
 1031 {
 1032         int ntries;
 1033 
 1034         /* Request exclusive access to NIC. */
 1035         IWN_SETBITS(sc, IWN_GP_CNTRL, IWN_GP_CNTRL_MAC_ACCESS_REQ);
 1036 
 1037         /* Spin until we actually get the lock. */
 1038         for (ntries = 0; ntries < 1000; ntries++) {
 1039                 if ((IWN_READ(sc, IWN_GP_CNTRL) &
 1040                      (IWN_GP_CNTRL_MAC_ACCESS_ENA | IWN_GP_CNTRL_SLEEP)) ==
 1041                     IWN_GP_CNTRL_MAC_ACCESS_ENA)
 1042                         return 0;
 1043                 DELAY(10);
 1044         }
 1045         return ETIMEDOUT;
 1046 }
 1047 
 1048 static __inline void
 1049 iwn_nic_unlock(struct iwn_softc *sc)
 1050 {
 1051         IWN_CLRBITS(sc, IWN_GP_CNTRL, IWN_GP_CNTRL_MAC_ACCESS_REQ);
 1052 }
 1053 
 1054 static __inline uint32_t
 1055 iwn_prph_read(struct iwn_softc *sc, uint32_t addr)
 1056 {
 1057         IWN_WRITE(sc, IWN_PRPH_RADDR, IWN_PRPH_DWORD | addr);
 1058         IWN_BARRIER_READ_WRITE(sc);
 1059         return IWN_READ(sc, IWN_PRPH_RDATA);
 1060 }
 1061 
 1062 static __inline void
 1063 iwn_prph_write(struct iwn_softc *sc, uint32_t addr, uint32_t data)
 1064 {
 1065         IWN_WRITE(sc, IWN_PRPH_WADDR, IWN_PRPH_DWORD | addr);
 1066         IWN_BARRIER_WRITE(sc);
 1067         IWN_WRITE(sc, IWN_PRPH_WDATA, data);
 1068 }
 1069 
 1070 static __inline void
 1071 iwn_prph_setbits(struct iwn_softc *sc, uint32_t addr, uint32_t mask)
 1072 {
 1073         iwn_prph_write(sc, addr, iwn_prph_read(sc, addr) | mask);
 1074 }
 1075 
 1076 static __inline void
 1077 iwn_prph_clrbits(struct iwn_softc *sc, uint32_t addr, uint32_t mask)
 1078 {
 1079         iwn_prph_write(sc, addr, iwn_prph_read(sc, addr) & ~mask);
 1080 }
 1081 
 1082 static __inline void
 1083 iwn_prph_write_region_4(struct iwn_softc *sc, uint32_t addr,
 1084     const uint32_t *data, int count)
 1085 {
 1086         for (; count > 0; count--, data++, addr += 4)
 1087                 iwn_prph_write(sc, addr, *data);
 1088 }
 1089 
 1090 static __inline uint32_t
 1091 iwn_mem_read(struct iwn_softc *sc, uint32_t addr)
 1092 {
 1093         IWN_WRITE(sc, IWN_MEM_RADDR, addr);
 1094         IWN_BARRIER_READ_WRITE(sc);
 1095         return IWN_READ(sc, IWN_MEM_RDATA);
 1096 }
 1097 
 1098 static __inline void
 1099 iwn_mem_write(struct iwn_softc *sc, uint32_t addr, uint32_t data)
 1100 {
 1101         IWN_WRITE(sc, IWN_MEM_WADDR, addr);
 1102         IWN_BARRIER_WRITE(sc);
 1103         IWN_WRITE(sc, IWN_MEM_WDATA, data);
 1104 }
 1105 
 1106 static __inline void
 1107 iwn_mem_write_2(struct iwn_softc *sc, uint32_t addr, uint16_t data)
 1108 {
 1109         uint32_t tmp;
 1110 
 1111         tmp = iwn_mem_read(sc, addr & ~3);
 1112         if (addr & 3)
 1113                 tmp = (tmp & 0x0000ffff) | data << 16;
 1114         else
 1115                 tmp = (tmp & 0xffff0000) | data;
 1116         iwn_mem_write(sc, addr & ~3, tmp);
 1117 }
 1118 
 1119 static __inline void
 1120 iwn_mem_read_region_4(struct iwn_softc *sc, uint32_t addr, uint32_t *data,
 1121     int count)
 1122 {
 1123         for (; count > 0; count--, addr += 4)
 1124                 *data++ = iwn_mem_read(sc, addr);
 1125 }
 1126 
 1127 static __inline void
 1128 iwn_mem_set_region_4(struct iwn_softc *sc, uint32_t addr, uint32_t val,
 1129     int count)
 1130 {
 1131         for (; count > 0; count--, addr += 4)
 1132                 iwn_mem_write(sc, addr, val);
 1133 }
 1134 
 1135 static int
 1136 iwn_eeprom_lock(struct iwn_softc *sc)
 1137 {
 1138         int i, ntries;
 1139 
 1140         for (i = 0; i < 100; i++) {
 1141                 /* Request exclusive access to EEPROM. */
 1142                 IWN_SETBITS(sc, IWN_HW_IF_CONFIG,
 1143                     IWN_HW_IF_CONFIG_EEPROM_LOCKED);
 1144 
 1145                 /* Spin until we actually get the lock. */
 1146                 for (ntries = 0; ntries < 100; ntries++) {
 1147                         if (IWN_READ(sc, IWN_HW_IF_CONFIG) &
 1148                             IWN_HW_IF_CONFIG_EEPROM_LOCKED)
 1149                                 return 0;
 1150                         DELAY(10);
 1151                 }
 1152         }
 1153         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end timeout\n", __func__);
 1154         return ETIMEDOUT;
 1155 }
 1156 
 1157 static __inline void
 1158 iwn_eeprom_unlock(struct iwn_softc *sc)
 1159 {
 1160         IWN_CLRBITS(sc, IWN_HW_IF_CONFIG, IWN_HW_IF_CONFIG_EEPROM_LOCKED);
 1161 }
 1162 
 1163 /*
 1164  * Initialize access by host to One Time Programmable ROM.
 1165  * NB: This kind of ROM can be found on 1000 or 6000 Series only.
 1166  */
 1167 static int
 1168 iwn_init_otprom(struct iwn_softc *sc)
 1169 {
 1170         uint16_t prev, base, next;
 1171         int count, error;
 1172 
 1173         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
 1174 
 1175         /* Wait for clock stabilization before accessing prph. */
 1176         if ((error = iwn_clock_wait(sc)) != 0)
 1177                 return error;
 1178 
 1179         if ((error = iwn_nic_lock(sc)) != 0)
 1180                 return error;
 1181         iwn_prph_setbits(sc, IWN_APMG_PS, IWN_APMG_PS_RESET_REQ);
 1182         DELAY(5);
 1183         iwn_prph_clrbits(sc, IWN_APMG_PS, IWN_APMG_PS_RESET_REQ);
 1184         iwn_nic_unlock(sc);
 1185 
 1186         /* Set auto clock gate disable bit for HW with OTP shadow RAM. */
 1187         if (sc->hw_type != IWN_HW_REV_TYPE_1000) {
 1188                 IWN_SETBITS(sc, IWN_DBG_LINK_PWR_MGMT,
 1189                     IWN_RESET_LINK_PWR_MGMT_DIS);
 1190         }
 1191         IWN_CLRBITS(sc, IWN_EEPROM_GP, IWN_EEPROM_GP_IF_OWNER);
 1192         /* Clear ECC status. */
 1193         IWN_SETBITS(sc, IWN_OTP_GP,
 1194             IWN_OTP_GP_ECC_CORR_STTS | IWN_OTP_GP_ECC_UNCORR_STTS);
 1195 
 1196         /*
 1197          * Find the block before last block (contains the EEPROM image)
 1198          * for HW without OTP shadow RAM.
 1199          */
 1200         if (sc->hw_type == IWN_HW_REV_TYPE_1000) {
 1201                 /* Switch to absolute addressing mode. */
 1202                 IWN_CLRBITS(sc, IWN_OTP_GP, IWN_OTP_GP_RELATIVE_ACCESS);
 1203                 base = prev = 0;
 1204                 for (count = 0; count < IWN1000_OTP_NBLOCKS; count++) {
 1205                         error = iwn_read_prom_data(sc, base, &next, 2);
 1206                         if (error != 0)
 1207                                 return error;
 1208                         if (next == 0)  /* End of linked-list. */
 1209                                 break;
 1210                         prev = base;
 1211                         base = le16toh(next);
 1212                 }
 1213                 if (count == 0 || count == IWN1000_OTP_NBLOCKS)
 1214                         return EIO;
 1215                 /* Skip "next" word. */
 1216                 sc->prom_base = prev + 1;
 1217         }
 1218 
 1219         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end\n", __func__);
 1220 
 1221         return 0;
 1222 }
 1223 
 1224 static int
 1225 iwn_read_prom_data(struct iwn_softc *sc, uint32_t addr, void *data, int count)
 1226 {
 1227         uint8_t *out = data;
 1228         uint32_t val, tmp;
 1229         int ntries;
 1230 
 1231         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
 1232 
 1233         addr += sc->prom_base;
 1234         for (; count > 0; count -= 2, addr++) {
 1235                 IWN_WRITE(sc, IWN_EEPROM, addr << 2);
 1236                 for (ntries = 0; ntries < 10; ntries++) {
 1237                         val = IWN_READ(sc, IWN_EEPROM);
 1238                         if (val & IWN_EEPROM_READ_VALID)
 1239                                 break;
 1240                         DELAY(5);
 1241                 }
 1242                 if (ntries == 10) {
 1243                         device_printf(sc->sc_dev,
 1244                             "timeout reading ROM at 0x%x\n", addr);
 1245                         return ETIMEDOUT;
 1246                 }
 1247                 if (sc->sc_flags & IWN_FLAG_HAS_OTPROM) {
 1248                         /* OTPROM, check for ECC errors. */
 1249                         tmp = IWN_READ(sc, IWN_OTP_GP);
 1250                         if (tmp & IWN_OTP_GP_ECC_UNCORR_STTS) {
 1251                                 device_printf(sc->sc_dev,
 1252                                     "OTPROM ECC error at 0x%x\n", addr);
 1253                                 return EIO;
 1254                         }
 1255                         if (tmp & IWN_OTP_GP_ECC_CORR_STTS) {
 1256                                 /* Correctable ECC error, clear bit. */
 1257                                 IWN_SETBITS(sc, IWN_OTP_GP,
 1258                                     IWN_OTP_GP_ECC_CORR_STTS);
 1259                         }
 1260                 }
 1261                 *out++ = val >> 16;
 1262                 if (count > 1)
 1263                         *out++ = val >> 24;
 1264         }
 1265 
 1266         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end\n", __func__);
 1267 
 1268         return 0;
 1269 }
 1270 
 1271 static void
 1272 iwn_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
 1273 {
 1274         if (error != 0)
 1275                 return;
 1276         KASSERT(nsegs == 1, ("too many DMA segments, %d should be 1", nsegs));
 1277         *(bus_addr_t *)arg = segs[0].ds_addr;
 1278 }
 1279 
 1280 static int
 1281 iwn_dma_contig_alloc(struct iwn_softc *sc, struct iwn_dma_info *dma,
 1282     void **kvap, bus_size_t size, bus_size_t alignment)
 1283 {
 1284         int error;
 1285 
 1286         dma->tag = NULL;
 1287         dma->size = size;
 1288 
 1289         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), alignment,
 1290             0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, size,
 1291             1, size, BUS_DMA_NOWAIT, NULL, NULL, &dma->tag);
 1292         if (error != 0)
 1293                 goto fail;
 1294 
 1295         error = bus_dmamem_alloc(dma->tag, (void **)&dma->vaddr,
 1296             BUS_DMA_NOWAIT | BUS_DMA_ZERO | BUS_DMA_COHERENT, &dma->map);
 1297         if (error != 0)
 1298                 goto fail;
 1299 
 1300         error = bus_dmamap_load(dma->tag, dma->map, dma->vaddr, size,
 1301             iwn_dma_map_addr, &dma->paddr, BUS_DMA_NOWAIT);
 1302         if (error != 0)
 1303                 goto fail;
 1304 
 1305         bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE);
 1306 
 1307         if (kvap != NULL)
 1308                 *kvap = dma->vaddr;
 1309 
 1310         return 0;
 1311 
 1312 fail:   iwn_dma_contig_free(dma);
 1313         return error;
 1314 }
 1315 
 1316 static void
 1317 iwn_dma_contig_free(struct iwn_dma_info *dma)
 1318 {
 1319         if (dma->map != NULL) {
 1320                 if (dma->vaddr != NULL) {
 1321                         bus_dmamap_sync(dma->tag, dma->map,
 1322                             BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
 1323                         bus_dmamap_unload(dma->tag, dma->map);
 1324                         bus_dmamem_free(dma->tag, dma->vaddr, dma->map);
 1325                         dma->vaddr = NULL;
 1326                 }
 1327                 bus_dmamap_destroy(dma->tag, dma->map);
 1328                 dma->map = NULL;
 1329         }
 1330         if (dma->tag != NULL) {
 1331                 bus_dma_tag_destroy(dma->tag);
 1332                 dma->tag = NULL;
 1333         }
 1334 }
 1335 
 1336 static int
 1337 iwn_alloc_sched(struct iwn_softc *sc)
 1338 {
 1339         /* TX scheduler rings must be aligned on a 1KB boundary. */
 1340         return iwn_dma_contig_alloc(sc, &sc->sched_dma, (void **)&sc->sched,
 1341             sc->schedsz, 1024);
 1342 }
 1343 
 1344 static void
 1345 iwn_free_sched(struct iwn_softc *sc)
 1346 {
 1347         iwn_dma_contig_free(&sc->sched_dma);
 1348 }
 1349 
 1350 static int
 1351 iwn_alloc_kw(struct iwn_softc *sc)
 1352 {
 1353         /* "Keep Warm" page must be aligned on a 4KB boundary. */
 1354         return iwn_dma_contig_alloc(sc, &sc->kw_dma, NULL, 4096, 4096);
 1355 }
 1356 
 1357 static void
 1358 iwn_free_kw(struct iwn_softc *sc)
 1359 {
 1360         iwn_dma_contig_free(&sc->kw_dma);
 1361 }
 1362 
 1363 static int
 1364 iwn_alloc_ict(struct iwn_softc *sc)
 1365 {
 1366         /* ICT table must be aligned on a 4KB boundary. */
 1367         return iwn_dma_contig_alloc(sc, &sc->ict_dma, (void **)&sc->ict,
 1368             IWN_ICT_SIZE, 4096);
 1369 }
 1370 
 1371 static void
 1372 iwn_free_ict(struct iwn_softc *sc)
 1373 {
 1374         iwn_dma_contig_free(&sc->ict_dma);
 1375 }
 1376 
 1377 static int
 1378 iwn_alloc_fwmem(struct iwn_softc *sc)
 1379 {
 1380         /* Must be aligned on a 16-byte boundary. */
 1381         return iwn_dma_contig_alloc(sc, &sc->fw_dma, NULL, sc->fwsz, 16);
 1382 }
 1383 
 1384 static void
 1385 iwn_free_fwmem(struct iwn_softc *sc)
 1386 {
 1387         iwn_dma_contig_free(&sc->fw_dma);
 1388 }
 1389 
 1390 static int
 1391 iwn_alloc_rx_ring(struct iwn_softc *sc, struct iwn_rx_ring *ring)
 1392 {
 1393         bus_size_t size;
 1394         int i, error;
 1395 
 1396         ring->cur = 0;
 1397 
 1398         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
 1399 
 1400         /* Allocate RX descriptors (256-byte aligned). */
 1401         size = IWN_RX_RING_COUNT * sizeof (uint32_t);
 1402         error = iwn_dma_contig_alloc(sc, &ring->desc_dma, (void **)&ring->desc,
 1403             size, 256);
 1404         if (error != 0) {
 1405                 device_printf(sc->sc_dev,
 1406                     "%s: could not allocate RX ring DMA memory, error %d\n",
 1407                     __func__, error);
 1408                 goto fail;
 1409         }
 1410 
 1411         /* Allocate RX status area (16-byte aligned). */
 1412         error = iwn_dma_contig_alloc(sc, &ring->stat_dma, (void **)&ring->stat,
 1413             sizeof (struct iwn_rx_status), 16);
 1414         if (error != 0) {
 1415                 device_printf(sc->sc_dev,
 1416                     "%s: could not allocate RX status DMA memory, error %d\n",
 1417                     __func__, error);
 1418                 goto fail;
 1419         }
 1420 
 1421         /* Create RX buffer DMA tag. */
 1422         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
 1423             BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
 1424             IWN_RBUF_SIZE, 1, IWN_RBUF_SIZE, BUS_DMA_NOWAIT, NULL, NULL,
 1425             &ring->data_dmat);
 1426         if (error != 0) {
 1427                 device_printf(sc->sc_dev,
 1428                     "%s: could not create RX buf DMA tag, error %d\n",
 1429                     __func__, error);
 1430                 goto fail;
 1431         }
 1432 
 1433         /*
 1434          * Allocate and map RX buffers.
 1435          */
 1436         for (i = 0; i < IWN_RX_RING_COUNT; i++) {
 1437                 struct iwn_rx_data *data = &ring->data[i];
 1438                 bus_addr_t paddr;
 1439 
 1440                 error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
 1441                 if (error != 0) {
 1442                         device_printf(sc->sc_dev,
 1443                             "%s: could not create RX buf DMA map, error %d\n",
 1444                             __func__, error);
 1445                         goto fail;
 1446                 }
 1447 
 1448                 data->m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR,
 1449                     IWN_RBUF_SIZE);
 1450                 if (data->m == NULL) {
 1451                         device_printf(sc->sc_dev,
 1452                             "%s: could not allocate RX mbuf\n", __func__);
 1453                         error = ENOBUFS;
 1454                         goto fail;
 1455                 }
 1456 
 1457                 error = bus_dmamap_load(ring->data_dmat, data->map,
 1458                     mtod(data->m, void *), IWN_RBUF_SIZE, iwn_dma_map_addr,
 1459                     &paddr, BUS_DMA_NOWAIT);
 1460                 if (error != 0 && error != EFBIG) {
 1461                         device_printf(sc->sc_dev,
 1462                             "%s: can't not map mbuf, error %d\n", __func__,
 1463                             error);
 1464                         goto fail;
 1465                 }
 1466 
 1467                 /* Set physical address of RX buffer (256-byte aligned). */
 1468                 ring->desc[i] = htole32(paddr >> 8);
 1469         }
 1470 
 1471         bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
 1472             BUS_DMASYNC_PREWRITE);
 1473 
 1474         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__);
 1475 
 1476         return 0;
 1477 
 1478 fail:   iwn_free_rx_ring(sc, ring);
 1479 
 1480         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end in error\n",__func__);
 1481 
 1482         return error;
 1483 }
 1484 
 1485 static void
 1486 iwn_reset_rx_ring(struct iwn_softc *sc, struct iwn_rx_ring *ring)
 1487 {
 1488         int ntries;
 1489 
 1490         DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
 1491 
 1492         if (iwn_nic_lock(sc) == 0) {
 1493                 IWN_WRITE(sc, IWN_FH_RX_CONFIG, 0);
 1494                 for (ntries = 0; ntries < 1000; ntries++) {
 1495                         if (IWN_READ(sc, IWN_FH_RX_STATUS) &
 1496                             IWN_FH_RX_STATUS_IDLE)
 1497                                 break;
 1498                         DELAY(10);
 1499                 }
 1500                 iwn_nic_unlock(sc);
 1501         }
 1502         ring->cur = 0;
 1503         sc->last_rx_valid = 0;
 1504 }
 1505 
 1506 static void
 1507 iwn_free_rx_ring(struct iwn_softc *sc, struct iwn_rx_ring *ring)
 1508 {
 1509         int i;
 1510 
 1511         DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s \n", __func__);
 1512 
 1513         iwn_dma_contig_free(&ring->desc_dma);
 1514         iwn_dma_contig_free(&ring->stat_dma);
 1515 
 1516         for (i = 0; i < IWN_RX_RING_COUNT; i++) {
 1517                 struct iwn_rx_data *data = &ring->data[i];
 1518 
 1519                 if (data->m != NULL) {
 1520                         bus_dmamap_sync(ring->data_dmat, data->map,
 1521                             BUS_DMASYNC_POSTREAD);
 1522                         bus_dmamap_unload(ring->data_dmat, data->map);
 1523                         m_freem(data->m);
 1524                         data->m = NULL;
 1525                 }
 1526                 if (data->map != NULL)
 1527                         bus_dmamap_destroy(ring->data_dmat, data->map);
 1528         }
 1529         if (ring->data_dmat != NULL) {
 1530                 bus_dma_tag_destroy(ring->data_dmat);
 1531                 ring->data_dmat = NULL;
 1532         }
 1533 }
 1534 
 1535 static int
 1536 iwn_alloc_tx_ring(struct iwn_softc *sc, struct iwn_tx_ring *ring, int qid)
 1537 {
 1538         bus_addr_t paddr;
 1539         bus_size_t size;
 1540         int i, error;
 1541 
 1542         ring->qid = qid;
 1543         ring->queued = 0;
 1544         ring->cur = 0;
 1545 
 1546         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
 1547 
 1548         /* Allocate TX descriptors (256-byte aligned). */
 1549         size = IWN_TX_RING_COUNT * sizeof (struct iwn_tx_desc);
 1550         error = iwn_dma_contig_alloc(sc, &ring->desc_dma, (void **)&ring->desc,
 1551             size, 256);
 1552         if (error != 0) {
 1553                 device_printf(sc->sc_dev,
 1554                     "%s: could not allocate TX ring DMA memory, error %d\n",
 1555                     __func__, error);
 1556                 goto fail;
 1557         }
 1558 
 1559         size = IWN_TX_RING_COUNT * sizeof (struct iwn_tx_cmd);
 1560         error = iwn_dma_contig_alloc(sc, &ring->cmd_dma, (void **)&ring->cmd,
 1561             size, 4);
 1562         if (error != 0) {
 1563                 device_printf(sc->sc_dev,
 1564                     "%s: could not allocate TX cmd DMA memory, error %d\n",
 1565                     __func__, error);
 1566                 goto fail;
 1567         }
 1568 
 1569         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
 1570             BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES,
 1571             IWN_MAX_SCATTER - 1, MCLBYTES, BUS_DMA_NOWAIT, NULL, NULL,
 1572             &ring->data_dmat);
 1573         if (error != 0) {
 1574                 device_printf(sc->sc_dev,
 1575                     "%s: could not create TX buf DMA tag, error %d\n",
 1576                     __func__, error);
 1577                 goto fail;
 1578         }
 1579 
 1580         paddr = ring->cmd_dma.paddr;
 1581         for (i = 0; i < IWN_TX_RING_COUNT; i++) {
 1582                 struct iwn_tx_data *data = &ring->data[i];
 1583 
 1584                 data->cmd_paddr = paddr;
 1585                 data->scratch_paddr = paddr + 12;
 1586                 paddr += sizeof (struct iwn_tx_cmd);
 1587 
 1588                 error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
 1589                 if (error != 0) {
 1590                         device_printf(sc->sc_dev,
 1591                             "%s: could not create TX buf DMA map, error %d\n",
 1592                             __func__, error);
 1593                         goto fail;
 1594                 }
 1595         }
 1596 
 1597         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end\n", __func__);
 1598 
 1599         return 0;
 1600 
 1601 fail:   iwn_free_tx_ring(sc, ring);
 1602         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end in error\n", __func__);
 1603         return error;
 1604 }
 1605 
 1606 static void
 1607 iwn_reset_tx_ring(struct iwn_softc *sc, struct iwn_tx_ring *ring)
 1608 {
 1609         int i;
 1610 
 1611         DPRINTF(sc, IWN_DEBUG_TRACE, "->doing %s \n", __func__);
 1612 
 1613         for (i = 0; i < IWN_TX_RING_COUNT; i++) {
 1614                 struct iwn_tx_data *data = &ring->data[i];
 1615 
 1616                 if (data->m != NULL) {
 1617                         bus_dmamap_sync(ring->data_dmat, data->map,
 1618                             BUS_DMASYNC_POSTWRITE);
 1619                         bus_dmamap_unload(ring->data_dmat, data->map);
 1620                         m_freem(data->m);
 1621                         data->m = NULL;
 1622                 }
 1623         }
 1624         /* Clear TX descriptors. */
 1625         memset(ring->desc, 0, ring->desc_dma.size);
 1626         bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
 1627             BUS_DMASYNC_PREWRITE);
 1628         sc->qfullmsk &= ~(1 << ring->qid);
 1629         ring->queued = 0;
 1630         ring->cur = 0;
 1631 }
 1632 
 1633 static void
 1634 iwn_free_tx_ring(struct iwn_softc *sc, struct iwn_tx_ring *ring)
 1635 {
 1636         int i;
 1637 
 1638         DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s \n", __func__);
 1639 
 1640         iwn_dma_contig_free(&ring->desc_dma);
 1641         iwn_dma_contig_free(&ring->cmd_dma);
 1642 
 1643         for (i = 0; i < IWN_TX_RING_COUNT; i++) {
 1644                 struct iwn_tx_data *data = &ring->data[i];
 1645 
 1646                 if (data->m != NULL) {
 1647                         bus_dmamap_sync(ring->data_dmat, data->map,
 1648                             BUS_DMASYNC_POSTWRITE);
 1649                         bus_dmamap_unload(ring->data_dmat, data->map);
 1650                         m_freem(data->m);
 1651                 }
 1652                 if (data->map != NULL)
 1653                         bus_dmamap_destroy(ring->data_dmat, data->map);
 1654         }
 1655         if (ring->data_dmat != NULL) {
 1656                 bus_dma_tag_destroy(ring->data_dmat);
 1657                 ring->data_dmat = NULL;
 1658         }
 1659 }
 1660 
 1661 static void
 1662 iwn5000_ict_reset(struct iwn_softc *sc)
 1663 {
 1664         /* Disable interrupts. */
 1665         IWN_WRITE(sc, IWN_INT_MASK, 0);
 1666 
 1667         /* Reset ICT table. */
 1668         memset(sc->ict, 0, IWN_ICT_SIZE);
 1669         sc->ict_cur = 0;
 1670 
 1671         /* Set physical address of ICT table (4KB aligned). */
 1672         DPRINTF(sc, IWN_DEBUG_RESET, "%s: enabling ICT\n", __func__);
 1673         IWN_WRITE(sc, IWN_DRAM_INT_TBL, IWN_DRAM_INT_TBL_ENABLE |
 1674             IWN_DRAM_INT_TBL_WRAP_CHECK | sc->ict_dma.paddr >> 12);
 1675 
 1676         /* Enable periodic RX interrupt. */
 1677         sc->int_mask |= IWN_INT_RX_PERIODIC;
 1678         /* Switch to ICT interrupt mode in driver. */
 1679         sc->sc_flags |= IWN_FLAG_USE_ICT;
 1680 
 1681         /* Re-enable interrupts. */
 1682         IWN_WRITE(sc, IWN_INT, 0xffffffff);
 1683         IWN_WRITE(sc, IWN_INT_MASK, sc->int_mask);
 1684 }
 1685 
 1686 static int
 1687 iwn_read_eeprom(struct iwn_softc *sc, uint8_t macaddr[IEEE80211_ADDR_LEN])
 1688 {
 1689         struct iwn_ops *ops = &sc->ops;
 1690         uint16_t val;
 1691         int error;
 1692 
 1693         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
 1694 
 1695         /* Check whether adapter has an EEPROM or an OTPROM. */
 1696         if (sc->hw_type >= IWN_HW_REV_TYPE_1000 &&
 1697             (IWN_READ(sc, IWN_OTP_GP) & IWN_OTP_GP_DEV_SEL_OTP))
 1698                 sc->sc_flags |= IWN_FLAG_HAS_OTPROM;
 1699         DPRINTF(sc, IWN_DEBUG_RESET, "%s found\n",
 1700             (sc->sc_flags & IWN_FLAG_HAS_OTPROM) ? "OTPROM" : "EEPROM");
 1701 
 1702         /* Adapter has to be powered on for EEPROM access to work. */
 1703         if ((error = iwn_apm_init(sc)) != 0) {
 1704                 device_printf(sc->sc_dev,
 1705                     "%s: could not power ON adapter, error %d\n", __func__,
 1706                     error);
 1707                 return error;
 1708         }
 1709 
 1710         if ((IWN_READ(sc, IWN_EEPROM_GP) & 0x7) == 0) {
 1711                 device_printf(sc->sc_dev, "%s: bad ROM signature\n", __func__);
 1712                 return EIO;
 1713         }
 1714         if ((error = iwn_eeprom_lock(sc)) != 0) {
 1715                 device_printf(sc->sc_dev, "%s: could not lock ROM, error %d\n",
 1716                     __func__, error);
 1717                 return error;
 1718         }
 1719         if (sc->sc_flags & IWN_FLAG_HAS_OTPROM) {
 1720                 if ((error = iwn_init_otprom(sc)) != 0) {
 1721                         device_printf(sc->sc_dev,
 1722                             "%s: could not initialize OTPROM, error %d\n",
 1723                             __func__, error);
 1724                         return error;
 1725                 }
 1726         }
 1727 
 1728         iwn_read_prom_data(sc, IWN_EEPROM_SKU_CAP, &val, 2);
 1729         DPRINTF(sc, IWN_DEBUG_RESET, "SKU capabilities=0x%04x\n", le16toh(val));
 1730         /* Check if HT support is bonded out. */
 1731         if (val & htole16(IWN_EEPROM_SKU_CAP_11N))
 1732                 sc->sc_flags |= IWN_FLAG_HAS_11N;
 1733 
 1734         iwn_read_prom_data(sc, IWN_EEPROM_RFCFG, &val, 2);
 1735         sc->rfcfg = le16toh(val);
 1736         DPRINTF(sc, IWN_DEBUG_RESET, "radio config=0x%04x\n", sc->rfcfg);
 1737         /* Read Tx/Rx chains from ROM unless it's known to be broken. */
 1738         if (sc->txchainmask == 0)
 1739                 sc->txchainmask = IWN_RFCFG_TXANTMSK(sc->rfcfg);
 1740         if (sc->rxchainmask == 0)
 1741                 sc->rxchainmask = IWN_RFCFG_RXANTMSK(sc->rfcfg);
 1742 
 1743         /* Read MAC address. */
 1744         iwn_read_prom_data(sc, IWN_EEPROM_MAC, macaddr, 6);
 1745 
 1746         /* Read adapter-specific information from EEPROM. */
 1747         ops->read_eeprom(sc);
 1748 
 1749         iwn_apm_stop(sc);       /* Power OFF adapter. */
 1750 
 1751         iwn_eeprom_unlock(sc);
 1752 
 1753         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end\n", __func__);
 1754 
 1755         return 0;
 1756 }
 1757 
 1758 static void
 1759 iwn4965_read_eeprom(struct iwn_softc *sc)
 1760 {
 1761         uint32_t addr;
 1762         uint16_t val;
 1763         int i;
 1764 
 1765         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
 1766 
 1767         /* Read regulatory domain (4 ASCII characters). */
 1768         iwn_read_prom_data(sc, IWN4965_EEPROM_DOMAIN, sc->eeprom_domain, 4);
 1769 
 1770         /* Read the list of authorized channels (20MHz ones only). */
 1771         for (i = 0; i < 7; i++) {
 1772                 addr = iwn4965_regulatory_bands[i];
 1773                 iwn_read_eeprom_channels(sc, i, addr);
 1774         }
 1775 
 1776         /* Read maximum allowed TX power for 2GHz and 5GHz bands. */
 1777         iwn_read_prom_data(sc, IWN4965_EEPROM_MAXPOW, &val, 2);
 1778         sc->maxpwr2GHz = val & 0xff;
 1779         sc->maxpwr5GHz = val >> 8;
 1780         /* Check that EEPROM values are within valid range. */
 1781         if (sc->maxpwr5GHz < 20 || sc->maxpwr5GHz > 50)
 1782                 sc->maxpwr5GHz = 38;
 1783         if (sc->maxpwr2GHz < 20 || sc->maxpwr2GHz > 50)
 1784                 sc->maxpwr2GHz = 38;
 1785         DPRINTF(sc, IWN_DEBUG_RESET, "maxpwr 2GHz=%d 5GHz=%d\n",
 1786             sc->maxpwr2GHz, sc->maxpwr5GHz);
 1787 
 1788         /* Read samples for each TX power group. */
 1789         iwn_read_prom_data(sc, IWN4965_EEPROM_BANDS, sc->bands,
 1790             sizeof sc->bands);
 1791 
 1792         /* Read voltage at which samples were taken. */
 1793         iwn_read_prom_data(sc, IWN4965_EEPROM_VOLTAGE, &val, 2);
 1794         sc->eeprom_voltage = (int16_t)le16toh(val);
 1795         DPRINTF(sc, IWN_DEBUG_RESET, "voltage=%d (in 0.3V)\n",
 1796             sc->eeprom_voltage);
 1797 
 1798 #ifdef IWN_DEBUG
 1799         /* Print samples. */
 1800         if (sc->sc_debug & IWN_DEBUG_ANY) {
 1801                 for (i = 0; i < IWN_NBANDS; i++)
 1802                         iwn4965_print_power_group(sc, i);
 1803         }
 1804 #endif
 1805 
 1806         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end\n", __func__);
 1807 }
 1808 
 1809 #ifdef IWN_DEBUG
 1810 static void
 1811 iwn4965_print_power_group(struct iwn_softc *sc, int i)
 1812 {
 1813         struct iwn4965_eeprom_band *band = &sc->bands[i];
 1814         struct iwn4965_eeprom_chan_samples *chans = band->chans;
 1815         int j, c;
 1816 
 1817         printf("===band %d===\n", i);
 1818         printf("chan lo=%d, chan hi=%d\n", band->lo, band->hi);
 1819         printf("chan1 num=%d\n", chans[0].num);
 1820         for (c = 0; c < 2; c++) {
 1821                 for (j = 0; j < IWN_NSAMPLES; j++) {
 1822                         printf("chain %d, sample %d: temp=%d gain=%d "
 1823                             "power=%d pa_det=%d\n", c, j,
 1824                             chans[0].samples[c][j].temp,
 1825                             chans[0].samples[c][j].gain,
 1826                             chans[0].samples[c][j].power,
 1827                             chans[0].samples[c][j].pa_det);
 1828                 }
 1829         }
 1830         printf("chan2 num=%d\n", chans[1].num);
 1831         for (c = 0; c < 2; c++) {
 1832                 for (j = 0; j < IWN_NSAMPLES; j++) {
 1833                         printf("chain %d, sample %d: temp=%d gain=%d "
 1834                             "power=%d pa_det=%d\n", c, j,
 1835                             chans[1].samples[c][j].temp,
 1836                             chans[1].samples[c][j].gain,
 1837                             chans[1].samples[c][j].power,
 1838                             chans[1].samples[c][j].pa_det);
 1839                 }
 1840         }
 1841 }
 1842 #endif
 1843 
 1844 static void
 1845 iwn5000_read_eeprom(struct iwn_softc *sc)
 1846 {
 1847         struct iwn5000_eeprom_calib_hdr hdr;
 1848         int32_t volt;
 1849         uint32_t base, addr;
 1850         uint16_t val;
 1851         int i;
 1852 
 1853         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
 1854 
 1855         /* Read regulatory domain (4 ASCII characters). */
 1856         iwn_read_prom_data(sc, IWN5000_EEPROM_REG, &val, 2);
 1857         base = le16toh(val);
 1858         iwn_read_prom_data(sc, base + IWN5000_EEPROM_DOMAIN,
 1859             sc->eeprom_domain, 4);
 1860 
 1861         /* Read the list of authorized channels (20MHz ones only). */
 1862         for (i = 0; i < 7; i++) {
 1863                 if (sc->hw_type >= IWN_HW_REV_TYPE_6000)
 1864                         addr = base + iwn6000_regulatory_bands[i];
 1865                 else
 1866                         addr = base + iwn5000_regulatory_bands[i];
 1867                 iwn_read_eeprom_channels(sc, i, addr);
 1868         }
 1869 
 1870         /* Read enhanced TX power information for 6000 Series. */
 1871         if (sc->hw_type >= IWN_HW_REV_TYPE_6000)
 1872                 iwn_read_eeprom_enhinfo(sc);
 1873 
 1874         iwn_read_prom_data(sc, IWN5000_EEPROM_CAL, &val, 2);
 1875         base = le16toh(val);
 1876         iwn_read_prom_data(sc, base, &hdr, sizeof hdr);
 1877         DPRINTF(sc, IWN_DEBUG_CALIBRATE,
 1878             "%s: calib version=%u pa type=%u voltage=%u\n", __func__,
 1879             hdr.version, hdr.pa_type, le16toh(hdr.volt));
 1880         sc->calib_ver = hdr.version;
 1881 
 1882         if (sc->hw_type == IWN_HW_REV_TYPE_5150) {
 1883                 /* Compute temperature offset. */
 1884                 iwn_read_prom_data(sc, base + IWN5000_EEPROM_TEMP, &val, 2);
 1885                 sc->eeprom_temp = le16toh(val);
 1886                 iwn_read_prom_data(sc, base + IWN5000_EEPROM_VOLT, &val, 2);
 1887                 volt = le16toh(val);
 1888                 sc->temp_off = sc->eeprom_temp - (volt / -5);
 1889                 DPRINTF(sc, IWN_DEBUG_CALIBRATE, "temp=%d volt=%d offset=%dK\n",
 1890                     sc->eeprom_temp, volt, sc->temp_off);
 1891         } else {
 1892                 /* Read crystal calibration. */
 1893                 iwn_read_prom_data(sc, base + IWN5000_EEPROM_CRYSTAL,
 1894                     &sc->eeprom_crystal, sizeof (uint32_t));
 1895                 DPRINTF(sc, IWN_DEBUG_CALIBRATE, "crystal calibration 0x%08x\n",
 1896                     le32toh(sc->eeprom_crystal));
 1897         }
 1898 
 1899         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end\n", __func__);
 1900 
 1901 }
 1902 
 1903 /*
 1904  * Translate EEPROM flags to net80211.
 1905  */
 1906 static uint32_t
 1907 iwn_eeprom_channel_flags(struct iwn_eeprom_chan *channel)
 1908 {
 1909         uint32_t nflags;
 1910 
 1911         nflags = 0;
 1912         if ((channel->flags & IWN_EEPROM_CHAN_ACTIVE) == 0)
 1913                 nflags |= IEEE80211_CHAN_PASSIVE;
 1914         if ((channel->flags & IWN_EEPROM_CHAN_IBSS) == 0)
 1915                 nflags |= IEEE80211_CHAN_NOADHOC;
 1916         if (channel->flags & IWN_EEPROM_CHAN_RADAR) {
 1917                 nflags |= IEEE80211_CHAN_DFS;
 1918                 /* XXX apparently IBSS may still be marked */
 1919                 nflags |= IEEE80211_CHAN_NOADHOC;
 1920         }
 1921 
 1922         return nflags;
 1923 }
 1924 
 1925 static void
 1926 iwn_read_eeprom_band(struct iwn_softc *sc, int n)
 1927 {
 1928         struct ifnet *ifp = sc->sc_ifp;
 1929         struct ieee80211com *ic = ifp->if_l2com;
 1930         struct iwn_eeprom_chan *channels = sc->eeprom_channels[n];
 1931         const struct iwn_chan_band *band = &iwn_bands[n];
 1932         struct ieee80211_channel *c;
 1933         uint8_t chan;
 1934         int i, nflags;
 1935 
 1936         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
 1937 
 1938         for (i = 0; i < band->nchan; i++) {
 1939                 if (!(channels[i].flags & IWN_EEPROM_CHAN_VALID)) {
 1940                         DPRINTF(sc, IWN_DEBUG_RESET,
 1941                             "skip chan %d flags 0x%x maxpwr %d\n",
 1942                             band->chan[i], channels[i].flags,
 1943                             channels[i].maxpwr);
 1944                         continue;
 1945                 }
 1946                 chan = band->chan[i];
 1947                 nflags = iwn_eeprom_channel_flags(&channels[i]);
 1948 
 1949                 c = &ic->ic_channels[ic->ic_nchans++];
 1950                 c->ic_ieee = chan;
 1951                 c->ic_maxregpower = channels[i].maxpwr;
 1952                 c->ic_maxpower = 2*c->ic_maxregpower;
 1953 
 1954                 if (n == 0) {   /* 2GHz band */
 1955                         c->ic_freq = ieee80211_ieee2mhz(chan, IEEE80211_CHAN_G);
 1956                         /* G =>'s B is supported */
 1957                         c->ic_flags = IEEE80211_CHAN_B | nflags;
 1958                         c = &ic->ic_channels[ic->ic_nchans++];
 1959                         c[0] = c[-1];
 1960                         c->ic_flags = IEEE80211_CHAN_G | nflags;
 1961                 } else {        /* 5GHz band */
 1962                         c->ic_freq = ieee80211_ieee2mhz(chan, IEEE80211_CHAN_A);
 1963                         c->ic_flags = IEEE80211_CHAN_A | nflags;
 1964                 }
 1965 
 1966                 /* Save maximum allowed TX power for this channel. */
 1967                 sc->maxpwr[chan] = channels[i].maxpwr;
 1968 
 1969                 DPRINTF(sc, IWN_DEBUG_RESET,
 1970                     "add chan %d flags 0x%x maxpwr %d\n", chan,
 1971                     channels[i].flags, channels[i].maxpwr);
 1972 
 1973                 if (sc->sc_flags & IWN_FLAG_HAS_11N) {
 1974                         /* add HT20, HT40 added separately */
 1975                         c = &ic->ic_channels[ic->ic_nchans++];
 1976                         c[0] = c[-1];
 1977                         c->ic_flags |= IEEE80211_CHAN_HT20;
 1978                 }
 1979         }
 1980 
 1981         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end\n", __func__);
 1982 
 1983 }
 1984 
 1985 static void
 1986 iwn_read_eeprom_ht40(struct iwn_softc *sc, int n)
 1987 {
 1988         struct ifnet *ifp = sc->sc_ifp;
 1989         struct ieee80211com *ic = ifp->if_l2com;
 1990         struct iwn_eeprom_chan *channels = sc->eeprom_channels[n];
 1991         const struct iwn_chan_band *band = &iwn_bands[n];
 1992         struct ieee80211_channel *c, *cent, *extc;
 1993         uint8_t chan;
 1994         int i, nflags;
 1995 
 1996         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s start\n", __func__);
 1997 
 1998         if (!(sc->sc_flags & IWN_FLAG_HAS_11N)) {
 1999                 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end no 11n\n", __func__);
 2000                 return;
 2001         }
 2002 
 2003         for (i = 0; i < band->nchan; i++) {
 2004                 if (!(channels[i].flags & IWN_EEPROM_CHAN_VALID)) {
 2005                         DPRINTF(sc, IWN_DEBUG_RESET,
 2006                             "skip chan %d flags 0x%x maxpwr %d\n",
 2007                             band->chan[i], channels[i].flags,
 2008                             channels[i].maxpwr);
 2009                         continue;
 2010                 }
 2011                 chan = band->chan[i];
 2012                 nflags = iwn_eeprom_channel_flags(&channels[i]);
 2013 
 2014                 /*
 2015                  * Each entry defines an HT40 channel pair; find the
 2016                  * center channel, then the extension channel above.
 2017                  */
 2018                 cent = ieee80211_find_channel_byieee(ic, chan,
 2019                     (n == 5 ? IEEE80211_CHAN_G : IEEE80211_CHAN_A));
 2020                 if (cent == NULL) {     /* XXX shouldn't happen */
 2021                         device_printf(sc->sc_dev,
 2022                             "%s: no entry for channel %d\n", __func__, chan);
 2023                         continue;
 2024                 }
 2025                 extc = ieee80211_find_channel(ic, cent->ic_freq+20,
 2026                     (n == 5 ? IEEE80211_CHAN_G : IEEE80211_CHAN_A));
 2027                 if (extc == NULL) {
 2028                         DPRINTF(sc, IWN_DEBUG_RESET,
 2029                             "%s: skip chan %d, extension channel not found\n",
 2030                             __func__, chan);
 2031                         continue;
 2032                 }
 2033 
 2034                 DPRINTF(sc, IWN_DEBUG_RESET,
 2035                     "add ht40 chan %d flags 0x%x maxpwr %d\n",
 2036                     chan, channels[i].flags, channels[i].maxpwr);
 2037 
 2038                 c = &ic->ic_channels[ic->ic_nchans++];
 2039                 c[0] = cent[0];
 2040                 c->ic_extieee = extc->ic_ieee;
 2041                 c->ic_flags &= ~IEEE80211_CHAN_HT;
 2042                 c->ic_flags |= IEEE80211_CHAN_HT40U | nflags;
 2043                 c = &ic->ic_channels[ic->ic_nchans++];
 2044                 c[0] = extc[0];
 2045                 c->ic_extieee = cent->ic_ieee;
 2046                 c->ic_flags &= ~IEEE80211_CHAN_HT;
 2047                 c->ic_flags |= IEEE80211_CHAN_HT40D | nflags;
 2048         }
 2049 
 2050         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end\n", __func__);
 2051 
 2052 }
 2053 
 2054 static void
 2055 iwn_read_eeprom_channels(struct iwn_softc *sc, int n, uint32_t addr)
 2056 {
 2057         struct ifnet *ifp = sc->sc_ifp;
 2058         struct ieee80211com *ic = ifp->if_l2com;
 2059 
 2060         iwn_read_prom_data(sc, addr, &sc->eeprom_channels[n],
 2061             iwn_bands[n].nchan * sizeof (struct iwn_eeprom_chan));
 2062 
 2063         if (n < 5)
 2064                 iwn_read_eeprom_band(sc, n);
 2065         else
 2066                 iwn_read_eeprom_ht40(sc, n);
 2067         ieee80211_sort_channels(ic->ic_channels, ic->ic_nchans);
 2068 }
 2069 
 2070 static struct iwn_eeprom_chan *
 2071 iwn_find_eeprom_channel(struct iwn_softc *sc, struct ieee80211_channel *c)
 2072 {
 2073         int band, chan, i, j;
 2074 
 2075         if (IEEE80211_IS_CHAN_HT40(c)) {
 2076                 band = IEEE80211_IS_CHAN_5GHZ(c) ? 6 : 5;
 2077                 if (IEEE80211_IS_CHAN_HT40D(c))
 2078                         chan = c->ic_extieee;
 2079                 else
 2080                         chan = c->ic_ieee;
 2081                 for (i = 0; i < iwn_bands[band].nchan; i++) {
 2082                         if (iwn_bands[band].chan[i] == chan)
 2083                                 return &sc->eeprom_channels[band][i];
 2084                 }
 2085         } else {
 2086                 for (j = 0; j < 5; j++) {
 2087                         for (i = 0; i < iwn_bands[j].nchan; i++) {
 2088                                 if (iwn_bands[j].chan[i] == c->ic_ieee)
 2089                                         return &sc->eeprom_channels[j][i];
 2090                         }
 2091                 }
 2092         }
 2093         return NULL;
 2094 }
 2095 
 2096 /*
 2097  * Enforce flags read from EEPROM.
 2098  */
 2099 static int
 2100 iwn_setregdomain(struct ieee80211com *ic, struct ieee80211_regdomain *rd,
 2101     int nchan, struct ieee80211_channel chans[])
 2102 {
 2103         struct iwn_softc *sc = ic->ic_ifp->if_softc;
 2104         int i;
 2105 
 2106         for (i = 0; i < nchan; i++) {
 2107                 struct ieee80211_channel *c = &chans[i];
 2108                 struct iwn_eeprom_chan *channel;
 2109 
 2110                 channel = iwn_find_eeprom_channel(sc, c);
 2111                 if (channel == NULL) {
 2112                         if_printf(ic->ic_ifp,
 2113                             "%s: invalid channel %u freq %u/0x%x\n",
 2114                             __func__, c->ic_ieee, c->ic_freq, c->ic_flags);
 2115                         return EINVAL;
 2116                 }
 2117                 c->ic_flags |= iwn_eeprom_channel_flags(channel);
 2118         }
 2119 
 2120         return 0;
 2121 }
 2122 
 2123 static void
 2124 iwn_read_eeprom_enhinfo(struct iwn_softc *sc)
 2125 {
 2126         struct iwn_eeprom_enhinfo enhinfo[35];
 2127         struct ifnet *ifp = sc->sc_ifp;
 2128         struct ieee80211com *ic = ifp->if_l2com;
 2129         struct ieee80211_channel *c;
 2130         uint16_t val, base;
 2131         int8_t maxpwr;
 2132         uint8_t flags;
 2133         int i, j;
 2134 
 2135         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
 2136 
 2137         iwn_read_prom_data(sc, IWN5000_EEPROM_REG, &val, 2);
 2138         base = le16toh(val);
 2139         iwn_read_prom_data(sc, base + IWN6000_EEPROM_ENHINFO,
 2140             enhinfo, sizeof enhinfo);
 2141 
 2142         for (i = 0; i < nitems(enhinfo); i++) {
 2143                 flags = enhinfo[i].flags;
 2144                 if (!(flags & IWN_ENHINFO_VALID))
 2145                         continue;       /* Skip invalid entries. */
 2146 
 2147                 maxpwr = 0;
 2148                 if (sc->txchainmask & IWN_ANT_A)
 2149                         maxpwr = MAX(maxpwr, enhinfo[i].chain[0]);
 2150                 if (sc->txchainmask & IWN_ANT_B)
 2151                         maxpwr = MAX(maxpwr, enhinfo[i].chain[1]);
 2152                 if (sc->txchainmask & IWN_ANT_C)
 2153                         maxpwr = MAX(maxpwr, enhinfo[i].chain[2]);
 2154                 if (sc->ntxchains == 2)
 2155                         maxpwr = MAX(maxpwr, enhinfo[i].mimo2);
 2156                 else if (sc->ntxchains == 3)
 2157                         maxpwr = MAX(maxpwr, enhinfo[i].mimo3);
 2158 
 2159                 for (j = 0; j < ic->ic_nchans; j++) {
 2160                         c = &ic->ic_channels[j];
 2161                         if ((flags & IWN_ENHINFO_5GHZ)) {
 2162                                 if (!IEEE80211_IS_CHAN_A(c))
 2163                                         continue;
 2164                         } else if ((flags & IWN_ENHINFO_OFDM)) {
 2165                                 if (!IEEE80211_IS_CHAN_G(c))
 2166                                         continue;
 2167                         } else if (!IEEE80211_IS_CHAN_B(c))
 2168                                 continue;
 2169                         if ((flags & IWN_ENHINFO_HT40)) {
 2170                                 if (!IEEE80211_IS_CHAN_HT40(c))
 2171                                         continue;
 2172                         } else {
 2173                                 if (IEEE80211_IS_CHAN_HT40(c))
 2174                                         continue;
 2175                         }
 2176                         if (enhinfo[i].chan != 0 &&
 2177                             enhinfo[i].chan != c->ic_ieee)
 2178                                 continue;
 2179 
 2180                         DPRINTF(sc, IWN_DEBUG_RESET,
 2181                             "channel %d(%x), maxpwr %d\n", c->ic_ieee,
 2182                             c->ic_flags, maxpwr / 2);
 2183                         c->ic_maxregpower = maxpwr / 2;
 2184                         c->ic_maxpower = maxpwr;
 2185                 }
 2186         }
 2187 
 2188         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end\n", __func__);
 2189 
 2190 }
 2191 
 2192 static struct ieee80211_node *
 2193 iwn_node_alloc(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN])
 2194 {
 2195         return malloc(sizeof (struct iwn_node), M_80211_NODE,M_NOWAIT | M_ZERO);
 2196 }
 2197 
 2198 static __inline int
 2199 rate2plcp(int rate)
 2200 {
 2201         switch (rate & 0xff) {
 2202         case 12:        return 0xd;
 2203         case 18:        return 0xf;
 2204         case 24:        return 0x5;
 2205         case 36:        return 0x7;
 2206         case 48:        return 0x9;
 2207         case 72:        return 0xb;
 2208         case 96:        return 0x1;
 2209         case 108:       return 0x3;
 2210         case 2:         return 10;
 2211         case 4:         return 20;
 2212         case 11:        return 55;
 2213         case 22:        return 110;
 2214         }
 2215         return 0;
 2216 }
 2217 
 2218 /*
 2219  * Calculate the required PLCP value from the given rate,
 2220  * to the given node.
 2221  *
 2222  * This will take the node configuration (eg 11n, rate table
 2223  * setup, etc) into consideration.
 2224  */
 2225 static uint32_t
 2226 iwn_rate_to_plcp(struct iwn_softc *sc, struct ieee80211_node *ni,
 2227     uint8_t rate)
 2228 {
 2229 #define RV(v)   ((v) & IEEE80211_RATE_VAL)
 2230         struct ieee80211com *ic = ni->ni_ic;
 2231         uint8_t txant1, txant2;
 2232         uint32_t plcp = 0;
 2233         int ridx;
 2234 
 2235         /* Use the first valid TX antenna. */
 2236         txant1 = IWN_LSB(sc->txchainmask);
 2237         txant2 = IWN_LSB(sc->txchainmask & ~txant1);
 2238 
 2239         /*
 2240          * If it's an MCS rate, let's set the plcp correctly
 2241          * and set the relevant flags based on the node config.
 2242          */
 2243         if (IEEE80211_IS_CHAN_HT(ni->ni_chan)) {
 2244                 /*
 2245                  * Set the initial PLCP value to be between 0->31 for
 2246                  * MCS 0 -> MCS 31, then set the "I'm an MCS rate!"
 2247                  * flag.
 2248                  */
 2249                 plcp = RV(rate) | IWN_RFLAG_MCS;
 2250 
 2251                 /*
 2252                  * XXX the following should only occur if both
 2253                  * the local configuration _and_ the remote node
 2254                  * advertise these capabilities.  Thus this code
 2255                  * may need fixing!
 2256                  */
 2257 
 2258                 /*
 2259                  * Set the channel width and guard interval.
 2260                  */
 2261                 if (IEEE80211_IS_CHAN_HT40(ni->ni_chan)) {
 2262                         plcp |= IWN_RFLAG_HT40;
 2263                         if (ni->ni_htcap & IEEE80211_HTCAP_SHORTGI40)
 2264                                 plcp |= IWN_RFLAG_SGI;
 2265                 } else if (ni->ni_htcap & IEEE80211_HTCAP_SHORTGI20) {
 2266                         plcp |= IWN_RFLAG_SGI;
 2267                 }
 2268 
 2269                 /*
 2270                  * If it's a two stream rate, enable TX on both
 2271                  * antennas.
 2272                  *
 2273                  * XXX three stream rates?
 2274                  */
 2275                 if (rate > 0x87)
 2276                         plcp |= IWN_RFLAG_ANT(txant1 | txant2);
 2277                 else
 2278                         plcp |= IWN_RFLAG_ANT(txant1);
 2279         } else {
 2280                 /*
 2281                  * Set the initial PLCP - fine for both
 2282                  * OFDM and CCK rates.
 2283                  */
 2284                 plcp = rate2plcp(rate);
 2285 
 2286                 /* Set CCK flag if it's CCK */
 2287 
 2288                 /* XXX It would be nice to have a method
 2289                  * to map the ridx -> phy table entry
 2290                  * so we could just query that, rather than
 2291                  * this hack to check against IWN_RIDX_OFDM6.
 2292                  */
 2293                 ridx = ieee80211_legacy_rate_lookup(ic->ic_rt,
 2294                     rate & IEEE80211_RATE_VAL);
 2295                 if (ridx < IWN_RIDX_OFDM6 &&
 2296                     IEEE80211_IS_CHAN_2GHZ(ni->ni_chan))
 2297                         plcp |= IWN_RFLAG_CCK;
 2298 
 2299                 /* Set antenna configuration */
 2300                 plcp |= IWN_RFLAG_ANT(txant1);
 2301         }
 2302 
 2303         DPRINTF(sc, IWN_DEBUG_TXRATE, "%s: rate=0x%02x, plcp=0x%08x\n",
 2304             __func__,
 2305             rate,
 2306             plcp);
 2307 
 2308         return (htole32(plcp));
 2309 #undef  RV
 2310 }
 2311 
 2312 static void
 2313 iwn_newassoc(struct ieee80211_node *ni, int isnew)
 2314 {
 2315         /* Doesn't do anything at the moment */
 2316 }
 2317 
 2318 static int
 2319 iwn_media_change(struct ifnet *ifp)
 2320 {
 2321         int error;
 2322 
 2323         error = ieee80211_media_change(ifp);
 2324         /* NB: only the fixed rate can change and that doesn't need a reset */
 2325         return (error == ENETRESET ? 0 : error);
 2326 }
 2327 
 2328 static int
 2329 iwn_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
 2330 {
 2331         struct iwn_vap *ivp = IWN_VAP(vap);
 2332         struct ieee80211com *ic = vap->iv_ic;
 2333         struct iwn_softc *sc = ic->ic_ifp->if_softc;
 2334         int error = 0;
 2335 
 2336         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
 2337 
 2338         DPRINTF(sc, IWN_DEBUG_STATE, "%s: %s -> %s\n", __func__,
 2339             ieee80211_state_name[vap->iv_state], ieee80211_state_name[nstate]);
 2340 
 2341         IEEE80211_UNLOCK(ic);
 2342         IWN_LOCK(sc);
 2343         callout_stop(&sc->calib_to);
 2344 
 2345         sc->rxon = &sc->rx_on[IWN_RXON_BSS_CTX];
 2346 
 2347         switch (nstate) {
 2348         case IEEE80211_S_ASSOC:
 2349                 if (vap->iv_state != IEEE80211_S_RUN)
 2350                         break;
 2351                 /* FALLTHROUGH */
 2352         case IEEE80211_S_AUTH:
 2353                 if (vap->iv_state == IEEE80211_S_AUTH)
 2354                         break;
 2355 
 2356                 /*
 2357                  * !AUTH -> AUTH transition requires state reset to handle
 2358                  * reassociations correctly.
 2359                  */
 2360                 sc->rxon->associd = 0;
 2361                 sc->rxon->filter &= ~htole32(IWN_FILTER_BSS);
 2362                 sc->calib.state = IWN_CALIB_STATE_INIT;
 2363 
 2364                 if ((error = iwn_auth(sc, vap)) != 0) {
 2365                         device_printf(sc->sc_dev,
 2366                             "%s: could not move to auth state\n", __func__);
 2367                 }
 2368                 break;
 2369 
 2370         case IEEE80211_S_RUN:
 2371                 /*
 2372                  * RUN -> RUN transition; Just restart the timers.
 2373                  */
 2374                 if (vap->iv_state == IEEE80211_S_RUN) {
 2375                         sc->calib_cnt = 0;
 2376                         break;
 2377                 }
 2378 
 2379                 /*
 2380                  * !RUN -> RUN requires setting the association id
 2381                  * which is done with a firmware cmd.  We also defer
 2382                  * starting the timers until that work is done.
 2383                  */
 2384                 if ((error = iwn_run(sc, vap)) != 0) {
 2385                         device_printf(sc->sc_dev,
 2386                             "%s: could not move to run state\n", __func__);
 2387                 }
 2388                 break;
 2389 
 2390         case IEEE80211_S_INIT:
 2391                 sc->calib.state = IWN_CALIB_STATE_INIT;
 2392                 break;
 2393 
 2394         default:
 2395                 break;
 2396         }
 2397         IWN_UNLOCK(sc);
 2398         IEEE80211_LOCK(ic);
 2399         if (error != 0){
 2400                 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end in error\n", __func__);
 2401                 return error;
 2402         }
 2403 
 2404         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__);
 2405 
 2406         return ivp->iv_newstate(vap, nstate, arg);
 2407 }
 2408 
 2409 static void
 2410 iwn_calib_timeout(void *arg)
 2411 {
 2412         struct iwn_softc *sc = arg;
 2413 
 2414         IWN_LOCK_ASSERT(sc);
 2415 
 2416         /* Force automatic TX power calibration every 60 secs. */
 2417         if (++sc->calib_cnt >= 120) {
 2418                 uint32_t flags = 0;
 2419 
 2420                 DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s\n",
 2421                     "sending request for statistics");
 2422                 (void)iwn_cmd(sc, IWN_CMD_GET_STATISTICS, &flags,
 2423                     sizeof flags, 1);
 2424                 sc->calib_cnt = 0;
 2425         }
 2426         callout_reset(&sc->calib_to, msecs_to_ticks(500), iwn_calib_timeout,
 2427             sc);
 2428 }
 2429 
 2430 /*
 2431  * Process an RX_PHY firmware notification.  This is usually immediately
 2432  * followed by an MPDU_RX_DONE notification.
 2433  */
 2434 static void
 2435 iwn_rx_phy(struct iwn_softc *sc, struct iwn_rx_desc *desc,
 2436     struct iwn_rx_data *data)
 2437 {
 2438         struct iwn_rx_stat *stat = (struct iwn_rx_stat *)(desc + 1);
 2439 
 2440         DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s: received PHY stats\n", __func__);
 2441         bus_dmamap_sync(sc->rxq.data_dmat, data->map, BUS_DMASYNC_POSTREAD);
 2442 
 2443         /* Save RX statistics, they will be used on MPDU_RX_DONE. */
 2444         memcpy(&sc->last_rx_stat, stat, sizeof (*stat));
 2445         sc->last_rx_valid = 1;
 2446 }
 2447 
 2448 /*
 2449  * Process an RX_DONE (4965AGN only) or MPDU_RX_DONE firmware notification.
 2450  * Each MPDU_RX_DONE notification must be preceded by an RX_PHY one.
 2451  */
 2452 static void
 2453 iwn_rx_done(struct iwn_softc *sc, struct iwn_rx_desc *desc,
 2454     struct iwn_rx_data *data)
 2455 {
 2456         struct iwn_ops *ops = &sc->ops;
 2457         struct ifnet *ifp = sc->sc_ifp;
 2458         struct ieee80211com *ic = ifp->if_l2com;
 2459         struct iwn_rx_ring *ring = &sc->rxq;
 2460         struct ieee80211_frame *wh;
 2461         struct ieee80211_node *ni;
 2462         struct mbuf *m, *m1;
 2463         struct iwn_rx_stat *stat;
 2464         caddr_t head;
 2465         bus_addr_t paddr;
 2466         uint32_t flags;
 2467         int error, len, rssi, nf;
 2468 
 2469         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
 2470 
 2471         if (desc->type == IWN_MPDU_RX_DONE) {
 2472                 /* Check for prior RX_PHY notification. */
 2473                 if (!sc->last_rx_valid) {
 2474                         DPRINTF(sc, IWN_DEBUG_ANY,
 2475                             "%s: missing RX_PHY\n", __func__);
 2476                         return;
 2477                 }
 2478                 stat = &sc->last_rx_stat;
 2479         } else
 2480                 stat = (struct iwn_rx_stat *)(desc + 1);
 2481 
 2482         bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTREAD);
 2483 
 2484         if (stat->cfg_phy_len > IWN_STAT_MAXLEN) {
 2485                 device_printf(sc->sc_dev,
 2486                     "%s: invalid RX statistic header, len %d\n", __func__,
 2487                     stat->cfg_phy_len);
 2488                 return;
 2489         }
 2490         if (desc->type == IWN_MPDU_RX_DONE) {
 2491                 struct iwn_rx_mpdu *mpdu = (struct iwn_rx_mpdu *)(desc + 1);
 2492                 head = (caddr_t)(mpdu + 1);
 2493                 len = le16toh(mpdu->len);
 2494         } else {
 2495                 head = (caddr_t)(stat + 1) + stat->cfg_phy_len;
 2496                 len = le16toh(stat->len);
 2497         }
 2498 
 2499         flags = le32toh(*(uint32_t *)(head + len));
 2500 
 2501         /* Discard frames with a bad FCS early. */
 2502         if ((flags & IWN_RX_NOERROR) != IWN_RX_NOERROR) {
 2503                 DPRINTF(sc, IWN_DEBUG_RECV, "%s: RX flags error %x\n",
 2504                     __func__, flags);
 2505                 ifp->if_ierrors++;
 2506                 return;
 2507         }
 2508         /* Discard frames that are too short. */
 2509         if (len < sizeof (*wh)) {
 2510                 DPRINTF(sc, IWN_DEBUG_RECV, "%s: frame too short: %d\n",
 2511                     __func__, len);
 2512                 ifp->if_ierrors++;
 2513                 return;
 2514         }
 2515 
 2516         m1 = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, IWN_RBUF_SIZE);
 2517         if (m1 == NULL) {
 2518                 DPRINTF(sc, IWN_DEBUG_ANY, "%s: no mbuf to restock ring\n",
 2519                     __func__);
 2520                 ifp->if_ierrors++;
 2521                 return;
 2522         }
 2523         bus_dmamap_unload(ring->data_dmat, data->map);
 2524 
 2525         error = bus_dmamap_load(ring->data_dmat, data->map, mtod(m1, void *),
 2526             IWN_RBUF_SIZE, iwn_dma_map_addr, &paddr, BUS_DMA_NOWAIT);
 2527         if (error != 0 && error != EFBIG) {
 2528                 device_printf(sc->sc_dev,
 2529                     "%s: bus_dmamap_load failed, error %d\n", __func__, error);
 2530                 m_freem(m1);
 2531 
 2532                 /* Try to reload the old mbuf. */
 2533                 error = bus_dmamap_load(ring->data_dmat, data->map,
 2534                     mtod(data->m, void *), IWN_RBUF_SIZE, iwn_dma_map_addr,
 2535                     &paddr, BUS_DMA_NOWAIT);
 2536                 if (error != 0 && error != EFBIG) {
 2537                         panic("%s: could not load old RX mbuf", __func__);
 2538                 }
 2539                 /* Physical address may have changed. */
 2540                 ring->desc[ring->cur] = htole32(paddr >> 8);
 2541                 bus_dmamap_sync(ring->data_dmat, ring->desc_dma.map,
 2542                     BUS_DMASYNC_PREWRITE);
 2543                 ifp->if_ierrors++;
 2544                 return;
 2545         }
 2546 
 2547         m = data->m;
 2548         data->m = m1;
 2549         /* Update RX descriptor. */
 2550         ring->desc[ring->cur] = htole32(paddr >> 8);
 2551         bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
 2552             BUS_DMASYNC_PREWRITE);
 2553 
 2554         /* Finalize mbuf. */
 2555         m->m_pkthdr.rcvif = ifp;
 2556         m->m_data = head;
 2557         m->m_pkthdr.len = m->m_len = len;
 2558 
 2559         /* Grab a reference to the source node. */
 2560         wh = mtod(m, struct ieee80211_frame *);
 2561         ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh);
 2562         nf = (ni != NULL && ni->ni_vap->iv_state == IEEE80211_S_RUN &&
 2563             (ic->ic_flags & IEEE80211_F_SCAN) == 0) ? sc->noise : -95;
 2564 
 2565         rssi = ops->get_rssi(sc, stat);
 2566 
 2567         if (ieee80211_radiotap_active(ic)) {
 2568                 struct iwn_rx_radiotap_header *tap = &sc->sc_rxtap;
 2569 
 2570                 tap->wr_flags = 0;
 2571                 if (stat->flags & htole16(IWN_STAT_FLAG_SHPREAMBLE))
 2572                         tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
 2573                 tap->wr_dbm_antsignal = (int8_t)rssi;
 2574                 tap->wr_dbm_antnoise = (int8_t)nf;
 2575                 tap->wr_tsft = stat->tstamp;
 2576                 switch (stat->rate) {
 2577                 /* CCK rates. */
 2578                 case  10: tap->wr_rate =   2; break;
 2579                 case  20: tap->wr_rate =   4; break;
 2580                 case  55: tap->wr_rate =  11; break;
 2581                 case 110: tap->wr_rate =  22; break;
 2582                 /* OFDM rates. */
 2583                 case 0xd: tap->wr_rate =  12; break;
 2584                 case 0xf: tap->wr_rate =  18; break;
 2585                 case 0x5: tap->wr_rate =  24; break;
 2586                 case 0x7: tap->wr_rate =  36; break;
 2587                 case 0x9: tap->wr_rate =  48; break;
 2588                 case 0xb: tap->wr_rate =  72; break;
 2589                 case 0x1: tap->wr_rate =  96; break;
 2590                 case 0x3: tap->wr_rate = 108; break;
 2591                 /* Unknown rate: should not happen. */
 2592                 default:  tap->wr_rate =   0;
 2593                 }
 2594         }
 2595 
 2596         IWN_UNLOCK(sc);
 2597 
 2598         /* Send the frame to the 802.11 layer. */
 2599         if (ni != NULL) {
 2600                 if (ni->ni_flags & IEEE80211_NODE_HT)
 2601                         m->m_flags |= M_AMPDU;
 2602                 (void)ieee80211_input(ni, m, rssi - nf, nf);
 2603                 /* Node is no longer needed. */
 2604                 ieee80211_free_node(ni);
 2605         } else
 2606                 (void)ieee80211_input_all(ic, m, rssi - nf, nf);
 2607 
 2608         IWN_LOCK(sc);
 2609 
 2610         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__);
 2611 
 2612 }
 2613 
 2614 /* Process an incoming Compressed BlockAck. */
 2615 static void
 2616 iwn_rx_compressed_ba(struct iwn_softc *sc, struct iwn_rx_desc *desc,
 2617     struct iwn_rx_data *data)
 2618 {
 2619         struct iwn_ops *ops = &sc->ops;
 2620         struct ifnet *ifp = sc->sc_ifp;
 2621         struct iwn_node *wn;
 2622         struct ieee80211_node *ni;
 2623         struct iwn_compressed_ba *ba = (struct iwn_compressed_ba *)(desc + 1);
 2624         struct iwn_tx_ring *txq;
 2625         struct iwn_tx_data *txdata;
 2626         struct ieee80211_tx_ampdu *tap;
 2627         struct mbuf *m;
 2628         uint64_t bitmap;
 2629         uint16_t ssn;
 2630         uint8_t tid;
 2631         int ackfailcnt = 0, i, lastidx, qid, *res, shift;
 2632 
 2633         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
 2634 
 2635         bus_dmamap_sync(sc->rxq.data_dmat, data->map, BUS_DMASYNC_POSTREAD);
 2636 
 2637         qid = le16toh(ba->qid);
 2638         txq = &sc->txq[ba->qid];
 2639         tap = sc->qid2tap[ba->qid];
 2640         tid = tap->txa_tid;
 2641         wn = (void *)tap->txa_ni;
 2642 
 2643         res = NULL;
 2644         ssn = 0;
 2645         if (!IEEE80211_AMPDU_RUNNING(tap)) {
 2646                 res = tap->txa_private;
 2647                 ssn = tap->txa_start & 0xfff;
 2648         }
 2649 
 2650         for (lastidx = le16toh(ba->ssn) & 0xff; txq->read != lastidx;) {
 2651                 txdata = &txq->data[txq->read];
 2652 
 2653                 /* Unmap and free mbuf. */
 2654                 bus_dmamap_sync(txq->data_dmat, txdata->map,
 2655                     BUS_DMASYNC_POSTWRITE);
 2656                 bus_dmamap_unload(txq->data_dmat, txdata->map);
 2657                 m = txdata->m, txdata->m = NULL;
 2658                 ni = txdata->ni, txdata->ni = NULL;
 2659 
 2660                 KASSERT(ni != NULL, ("no node"));
 2661                 KASSERT(m != NULL, ("no mbuf"));
 2662 
 2663                 ieee80211_tx_complete(ni, m, 1);
 2664 
 2665                 txq->queued--;
 2666                 txq->read = (txq->read + 1) % IWN_TX_RING_COUNT;
 2667         }
 2668 
 2669         if (txq->queued == 0 && res != NULL) {
 2670                 iwn_nic_lock(sc);
 2671                 ops->ampdu_tx_stop(sc, qid, tid, ssn);
 2672                 iwn_nic_unlock(sc);
 2673                 sc->qid2tap[qid] = NULL;
 2674                 free(res, M_DEVBUF);
 2675                 return;
 2676         }
 2677 
 2678         if (wn->agg[tid].bitmap == 0)
 2679                 return;
 2680 
 2681         shift = wn->agg[tid].startidx - ((le16toh(ba->seq) >> 4) & 0xff);
 2682         if (shift < 0)
 2683                 shift += 0x100;
 2684 
 2685         if (wn->agg[tid].nframes > (64 - shift))
 2686                 return;
 2687 
 2688         ni = tap->txa_ni;
 2689         bitmap = (le64toh(ba->bitmap) >> shift) & wn->agg[tid].bitmap;
 2690         for (i = 0; bitmap; i++) {
 2691                 if ((bitmap & 1) == 0) {
 2692                         ifp->if_oerrors++;
 2693                         ieee80211_ratectl_tx_complete(ni->ni_vap, ni,
 2694                             IEEE80211_RATECTL_TX_FAILURE, &ackfailcnt, NULL);
 2695                 } else {
 2696                         ifp->if_opackets++;
 2697                         ieee80211_ratectl_tx_complete(ni->ni_vap, ni,
 2698                             IEEE80211_RATECTL_TX_SUCCESS, &ackfailcnt, NULL);
 2699                 }
 2700                 bitmap >>= 1;
 2701         }
 2702 
 2703         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__);
 2704 
 2705 }
 2706 
 2707 /*
 2708  * Process a CALIBRATION_RESULT notification sent by the initialization
 2709  * firmware on response to a CMD_CALIB_CONFIG command (5000 only).
 2710  */
 2711 static void
 2712 iwn5000_rx_calib_results(struct iwn_softc *sc, struct iwn_rx_desc *desc,
 2713     struct iwn_rx_data *data)
 2714 {
 2715         struct iwn_phy_calib *calib = (struct iwn_phy_calib *)(desc + 1);
 2716         int len, idx = -1;
 2717 
 2718         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
 2719 
 2720         /* Runtime firmware should not send such a notification. */
 2721         if (sc->sc_flags & IWN_FLAG_CALIB_DONE){
 2722                 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s received after clib done\n",
 2723             __func__);
 2724                 return;
 2725         }
 2726         len = (le32toh(desc->len) & 0x3fff) - 4;
 2727         bus_dmamap_sync(sc->rxq.data_dmat, data->map, BUS_DMASYNC_POSTREAD);
 2728 
 2729         switch (calib->code) {
 2730         case IWN5000_PHY_CALIB_DC:
 2731                 if ((sc->sc_flags & IWN_FLAG_INTERNAL_PA) == 0 &&
 2732                     (sc->hw_type == IWN_HW_REV_TYPE_5150 ||
 2733                      sc->hw_type >= IWN_HW_REV_TYPE_6000) &&
 2734                      sc->hw_type != IWN_HW_REV_TYPE_6050)
 2735                         idx = 0;
 2736                 break;
 2737         case IWN5000_PHY_CALIB_LO:
 2738                 idx = 1;
 2739                 break;
 2740         case IWN5000_PHY_CALIB_TX_IQ:
 2741                 idx = 2;
 2742                 break;
 2743         case IWN5000_PHY_CALIB_TX_IQ_PERIODIC:
 2744                 if (sc->hw_type < IWN_HW_REV_TYPE_6000 &&
 2745                     sc->hw_type != IWN_HW_REV_TYPE_5150)
 2746                         idx = 3;
 2747                 break;
 2748         case IWN5000_PHY_CALIB_BASE_BAND:
 2749                 idx = 4;
 2750                 break;
 2751         }
 2752         if (idx == -1)  /* Ignore other results. */
 2753                 return;
 2754 
 2755         /* Save calibration result. */
 2756         if (sc->calibcmd[idx].buf != NULL)
 2757                 free(sc->calibcmd[idx].buf, M_DEVBUF);
 2758         sc->calibcmd[idx].buf = malloc(len, M_DEVBUF, M_NOWAIT);
 2759         if (sc->calibcmd[idx].buf == NULL) {
 2760                 DPRINTF(sc, IWN_DEBUG_CALIBRATE,
 2761                     "not enough memory for calibration result %d\n",
 2762                     calib->code);
 2763                 return;
 2764         }
 2765         DPRINTF(sc, IWN_DEBUG_CALIBRATE,
 2766             "saving calibration result code=%d len=%d\n", calib->code, len);
 2767         sc->calibcmd[idx].len = len;
 2768         memcpy(sc->calibcmd[idx].buf, calib, len);
 2769 }
 2770 
 2771 /*
 2772  * Process an RX_STATISTICS or BEACON_STATISTICS firmware notification.
 2773  * The latter is sent by the firmware after each received beacon.
 2774  */
 2775 static void
 2776 iwn_rx_statistics(struct iwn_softc *sc, struct iwn_rx_desc *desc,
 2777     struct iwn_rx_data *data)
 2778 {
 2779         struct iwn_ops *ops = &sc->ops;
 2780         struct ifnet *ifp = sc->sc_ifp;
 2781         struct ieee80211com *ic = ifp->if_l2com;
 2782         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
 2783         struct iwn_calib_state *calib = &sc->calib;
 2784         struct iwn_stats *stats = (struct iwn_stats *)(desc + 1);
 2785         int temp;
 2786 
 2787         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
 2788 
 2789         /* Ignore statistics received during a scan. */
 2790         if (vap->iv_state != IEEE80211_S_RUN ||
 2791             (ic->ic_flags & IEEE80211_F_SCAN)){
 2792                 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s received during calib\n",
 2793             __func__);
 2794                 return;
 2795         }
 2796 
 2797         bus_dmamap_sync(sc->rxq.data_dmat, data->map, BUS_DMASYNC_POSTREAD);
 2798 
 2799         DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s: received statistics, cmd %d\n",
 2800             __func__, desc->type);
 2801         sc->calib_cnt = 0;      /* Reset TX power calibration timeout. */
 2802 
 2803         /* Test if temperature has changed. */
 2804         if (stats->general.temp != sc->rawtemp) {
 2805                 /* Convert "raw" temperature to degC. */
 2806                 sc->rawtemp = stats->general.temp;
 2807                 temp = ops->get_temperature(sc);
 2808                 DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s: temperature %d\n",
 2809                     __func__, temp);
 2810 
 2811                 /* Update TX power if need be (4965AGN only). */
 2812                 if (sc->hw_type == IWN_HW_REV_TYPE_4965)
 2813                         iwn4965_power_calibration(sc, temp);
 2814         }
 2815 
 2816         if (desc->type != IWN_BEACON_STATISTICS)
 2817                 return; /* Reply to a statistics request. */
 2818 
 2819         sc->noise = iwn_get_noise(&stats->rx.general);
 2820         DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s: noise %d\n", __func__, sc->noise);
 2821 
 2822         /* Test that RSSI and noise are present in stats report. */
 2823         if (le32toh(stats->rx.general.flags) != 1) {
 2824                 DPRINTF(sc, IWN_DEBUG_ANY, "%s\n",
 2825                     "received statistics without RSSI");
 2826                 return;
 2827         }
 2828 
 2829         if (calib->state == IWN_CALIB_STATE_ASSOC)
 2830                 iwn_collect_noise(sc, &stats->rx.general);
 2831         else if (calib->state == IWN_CALIB_STATE_RUN)
 2832                 iwn_tune_sensitivity(sc, &stats->rx);
 2833 
 2834         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__);
 2835 }
 2836 
 2837 /*
 2838  * Process a TX_DONE firmware notification.  Unfortunately, the 4965AGN
 2839  * and 5000 adapters have different incompatible TX status formats.
 2840  */
 2841 static void
 2842 iwn4965_tx_done(struct iwn_softc *sc, struct iwn_rx_desc *desc,
 2843     struct iwn_rx_data *data)
 2844 {
 2845         struct iwn4965_tx_stat *stat = (struct iwn4965_tx_stat *)(desc + 1);
 2846         struct iwn_tx_ring *ring;
 2847         int qid;
 2848 
 2849         qid = desc->qid & 0xf;
 2850         ring = &sc->txq[qid];
 2851 
 2852         DPRINTF(sc, IWN_DEBUG_XMIT, "%s: "
 2853             "qid %d idx %d retries %d nkill %d rate %x duration %d status %x\n",
 2854             __func__, desc->qid, desc->idx, stat->ackfailcnt,
 2855             stat->btkillcnt, stat->rate, le16toh(stat->duration),
 2856             le32toh(stat->status));
 2857 
 2858         bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTREAD);
 2859         if (qid >= sc->firstaggqueue) {
 2860                 iwn_ampdu_tx_done(sc, qid, desc->idx, stat->nframes,
 2861                     &stat->status);
 2862         } else {
 2863                 iwn_tx_done(sc, desc, stat->ackfailcnt,
 2864                     le32toh(stat->status) & 0xff);
 2865         }
 2866 }
 2867 
 2868 static void
 2869 iwn5000_tx_done(struct iwn_softc *sc, struct iwn_rx_desc *desc,
 2870     struct iwn_rx_data *data)
 2871 {
 2872         struct iwn5000_tx_stat *stat = (struct iwn5000_tx_stat *)(desc + 1);
 2873         struct iwn_tx_ring *ring;
 2874         int qid;
 2875 
 2876         qid = desc->qid & 0xf;
 2877         ring = &sc->txq[qid];
 2878 
 2879         DPRINTF(sc, IWN_DEBUG_XMIT, "%s: "
 2880             "qid %d idx %d retries %d nkill %d rate %x duration %d status %x\n",
 2881             __func__, desc->qid, desc->idx, stat->ackfailcnt,
 2882             stat->btkillcnt, stat->rate, le16toh(stat->duration),
 2883             le32toh(stat->status));
 2884 
 2885 #ifdef notyet
 2886         /* Reset TX scheduler slot. */
 2887         iwn5000_reset_sched(sc, desc->qid & 0xf, desc->idx);
 2888 #endif
 2889 
 2890         bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTREAD);
 2891         if (qid >= sc->firstaggqueue) {
 2892                 iwn_ampdu_tx_done(sc, qid, desc->idx, stat->nframes,
 2893                     &stat->status);
 2894         } else {
 2895                 iwn_tx_done(sc, desc, stat->ackfailcnt,
 2896                     le16toh(stat->status) & 0xff);
 2897         }
 2898 }
 2899 
 2900 /*
 2901  * Adapter-independent backend for TX_DONE firmware notifications.
 2902  */
 2903 static void
 2904 iwn_tx_done(struct iwn_softc *sc, struct iwn_rx_desc *desc, int ackfailcnt,
 2905     uint8_t status)
 2906 {
 2907         struct ifnet *ifp = sc->sc_ifp;
 2908         struct iwn_tx_ring *ring = &sc->txq[desc->qid & 0xf];
 2909         struct iwn_tx_data *data = &ring->data[desc->idx];
 2910         struct mbuf *m;
 2911         struct ieee80211_node *ni;
 2912         struct ieee80211vap *vap;
 2913 
 2914         KASSERT(data->ni != NULL, ("no node"));
 2915 
 2916         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
 2917 
 2918         /* Unmap and free mbuf. */
 2919         bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTWRITE);
 2920         bus_dmamap_unload(ring->data_dmat, data->map);
 2921         m = data->m, data->m = NULL;
 2922         ni = data->ni, data->ni = NULL;
 2923         vap = ni->ni_vap;
 2924 
 2925         /*
 2926          * Update rate control statistics for the node.
 2927          */
 2928         if (status & IWN_TX_FAIL) {
 2929                 ifp->if_oerrors++;
 2930                 ieee80211_ratectl_tx_complete(vap, ni,
 2931                     IEEE80211_RATECTL_TX_FAILURE, &ackfailcnt, NULL);
 2932         } else {
 2933                 ifp->if_opackets++;
 2934                 ieee80211_ratectl_tx_complete(vap, ni,
 2935                     IEEE80211_RATECTL_TX_SUCCESS, &ackfailcnt, NULL);
 2936         }
 2937 
 2938         /*
 2939          * Channels marked for "radar" require traffic to be received
 2940          * to unlock before we can transmit.  Until traffic is seen
 2941          * any attempt to transmit is returned immediately with status
 2942          * set to IWN_TX_FAIL_TX_LOCKED.  Unfortunately this can easily
 2943          * happen on first authenticate after scanning.  To workaround
 2944          * this we ignore a failure of this sort in AUTH state so the
 2945          * 802.11 layer will fall back to using a timeout to wait for
 2946          * the AUTH reply.  This allows the firmware time to see
 2947          * traffic so a subsequent retry of AUTH succeeds.  It's
 2948          * unclear why the firmware does not maintain state for
 2949          * channels recently visited as this would allow immediate
 2950          * use of the channel after a scan (where we see traffic).
 2951          */
 2952         if (status == IWN_TX_FAIL_TX_LOCKED &&
 2953             ni->ni_vap->iv_state == IEEE80211_S_AUTH)
 2954                 ieee80211_tx_complete(ni, m, 0);
 2955         else
 2956                 ieee80211_tx_complete(ni, m,
 2957                     (status & IWN_TX_FAIL) != 0);
 2958 
 2959         sc->sc_tx_timer = 0;
 2960         if (--ring->queued < IWN_TX_RING_LOMARK) {
 2961                 sc->qfullmsk &= ~(1 << ring->qid);
 2962                 if (sc->qfullmsk == 0 &&
 2963                     (ifp->if_drv_flags & IFF_DRV_OACTIVE)) {
 2964                         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
 2965                         iwn_start_locked(ifp);
 2966                 }
 2967         }
 2968 
 2969         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__);
 2970 
 2971 }
 2972 
 2973 /*
 2974  * Process a "command done" firmware notification.  This is where we wakeup
 2975  * processes waiting for a synchronous command completion.
 2976  */
 2977 static void
 2978 iwn_cmd_done(struct iwn_softc *sc, struct iwn_rx_desc *desc)
 2979 {
 2980         struct iwn_tx_ring *ring = &sc->txq[4];
 2981         struct iwn_tx_data *data;
 2982 
 2983         if ((desc->qid & 0xf) != 4)
 2984                 return; /* Not a command ack. */
 2985 
 2986         data = &ring->data[desc->idx];
 2987 
 2988         /* If the command was mapped in an mbuf, free it. */
 2989         if (data->m != NULL) {
 2990                 bus_dmamap_sync(ring->data_dmat, data->map,
 2991                     BUS_DMASYNC_POSTWRITE);
 2992                 bus_dmamap_unload(ring->data_dmat, data->map);
 2993                 m_freem(data->m);
 2994                 data->m = NULL;
 2995         }
 2996         wakeup(&ring->desc[desc->idx]);
 2997 }
 2998 
 2999 static void
 3000 iwn_ampdu_tx_done(struct iwn_softc *sc, int qid, int idx, int nframes,
 3001     void *stat)
 3002 {
 3003         struct iwn_ops *ops = &sc->ops;
 3004         struct ifnet *ifp = sc->sc_ifp;
 3005         struct iwn_tx_ring *ring = &sc->txq[qid];
 3006         struct iwn_tx_data *data;
 3007         struct mbuf *m;
 3008         struct iwn_node *wn;
 3009         struct ieee80211_node *ni;
 3010         struct ieee80211_tx_ampdu *tap;
 3011         uint64_t bitmap;
 3012         uint32_t *status = stat;
 3013         uint16_t *aggstatus = stat;
 3014         uint16_t ssn;
 3015         uint8_t tid;
 3016         int bit, i, lastidx, *res, seqno, shift, start;
 3017 
 3018         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
 3019 
 3020 #ifdef NOT_YET
 3021         if (nframes == 1) {
 3022                 if ((*status & 0xff) != 1 && (*status & 0xff) != 2)
 3023                         printf("ieee80211_send_bar()\n");
 3024         }
 3025 #endif
 3026 
 3027         bitmap = 0;
 3028         start = idx;
 3029         for (i = 0; i < nframes; i++) {
 3030                 if (le16toh(aggstatus[i * 2]) & 0xc)
 3031                         continue;
 3032 
 3033                 idx = le16toh(aggstatus[2*i + 1]) & 0xff;
 3034                 bit = idx - start;
 3035                 shift = 0;
 3036                 if (bit >= 64) {
 3037                         shift = 0x100 - idx + start;
 3038                         bit = 0;
 3039                         start = idx;
 3040                 } else if (bit <= -64)
 3041                         bit = 0x100 - start + idx;
 3042                 else if (bit < 0) {
 3043                         shift = start - idx;
 3044                         start = idx;
 3045                         bit = 0;
 3046                 }
 3047                 bitmap = bitmap << shift;
 3048                 bitmap |= 1ULL << bit;
 3049         }
 3050         tap = sc->qid2tap[qid];
 3051         tid = tap->txa_tid;
 3052         wn = (void *)tap->txa_ni;
 3053         wn->agg[tid].bitmap = bitmap;
 3054         wn->agg[tid].startidx = start;
 3055         wn->agg[tid].nframes = nframes;
 3056 
 3057         res = NULL;
 3058         ssn = 0;
 3059         if (!IEEE80211_AMPDU_RUNNING(tap)) {
 3060                 res = tap->txa_private;
 3061                 ssn = tap->txa_start & 0xfff;
 3062         }
 3063 
 3064         seqno = le32toh(*(status + nframes)) & 0xfff;
 3065         for (lastidx = (seqno & 0xff); ring->read != lastidx;) {
 3066                 data = &ring->data[ring->read];
 3067 
 3068                 /* Unmap and free mbuf. */
 3069                 bus_dmamap_sync(ring->data_dmat, data->map,
 3070                     BUS_DMASYNC_POSTWRITE);
 3071                 bus_dmamap_unload(ring->data_dmat, data->map);
 3072                 m = data->m, data->m = NULL;
 3073                 ni = data->ni, data->ni = NULL;
 3074 
 3075                 KASSERT(ni != NULL, ("no node"));
 3076                 KASSERT(m != NULL, ("no mbuf"));
 3077 
 3078                 ieee80211_tx_complete(ni, m, 1);
 3079 
 3080                 ring->queued--;
 3081                 ring->read = (ring->read + 1) % IWN_TX_RING_COUNT;
 3082         }
 3083 
 3084         if (ring->queued == 0 && res != NULL) {
 3085                 iwn_nic_lock(sc);
 3086                 ops->ampdu_tx_stop(sc, qid, tid, ssn);
 3087                 iwn_nic_unlock(sc);
 3088                 sc->qid2tap[qid] = NULL;
 3089                 free(res, M_DEVBUF);
 3090                 return;
 3091         }
 3092 
 3093         sc->sc_tx_timer = 0;
 3094         if (ring->queued < IWN_TX_RING_LOMARK) {
 3095                 sc->qfullmsk &= ~(1 << ring->qid);
 3096                 if (sc->qfullmsk == 0 &&
 3097                     (ifp->if_drv_flags & IFF_DRV_OACTIVE)) {
 3098                         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
 3099                         iwn_start_locked(ifp);
 3100                 }
 3101         }
 3102 
 3103         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__);
 3104 
 3105 }
 3106 
 3107 /*
 3108  * Process an INT_FH_RX or INT_SW_RX interrupt.
 3109  */
 3110 static void
 3111 iwn_notif_intr(struct iwn_softc *sc)
 3112 {
 3113         struct iwn_ops *ops = &sc->ops;
 3114         struct ifnet *ifp = sc->sc_ifp;
 3115         struct ieee80211com *ic = ifp->if_l2com;
 3116         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
 3117         uint16_t hw;
 3118 
 3119         bus_dmamap_sync(sc->rxq.stat_dma.tag, sc->rxq.stat_dma.map,
 3120             BUS_DMASYNC_POSTREAD);
 3121 
 3122         hw = le16toh(sc->rxq.stat->closed_count) & 0xfff;
 3123         while (sc->rxq.cur != hw) {
 3124                 struct iwn_rx_data *data = &sc->rxq.data[sc->rxq.cur];
 3125                 struct iwn_rx_desc *desc;
 3126 
 3127                 bus_dmamap_sync(sc->rxq.data_dmat, data->map,
 3128                     BUS_DMASYNC_POSTREAD);
 3129                 desc = mtod(data->m, struct iwn_rx_desc *);
 3130 
 3131                 DPRINTF(sc, IWN_DEBUG_RECV,
 3132                     "%s: qid %x idx %d flags %x type %d(%s) len %d\n",
 3133                     __func__, desc->qid & 0xf, desc->idx, desc->flags,
 3134                     desc->type, iwn_intr_str(desc->type),
 3135                     le16toh(desc->len));
 3136 
 3137                 if (!(desc->qid & 0x80))        /* Reply to a command. */
 3138                         iwn_cmd_done(sc, desc);
 3139 
 3140                 switch (desc->type) {
 3141                 case IWN_RX_PHY:
 3142                         iwn_rx_phy(sc, desc, data);
 3143                         break;
 3144 
 3145                 case IWN_RX_DONE:               /* 4965AGN only. */
 3146                 case IWN_MPDU_RX_DONE:
 3147                         /* An 802.11 frame has been received. */
 3148                         iwn_rx_done(sc, desc, data);
 3149                         break;
 3150 
 3151                 case IWN_RX_COMPRESSED_BA:
 3152                         /* A Compressed BlockAck has been received. */
 3153                         iwn_rx_compressed_ba(sc, desc, data);
 3154                         break;
 3155 
 3156                 case IWN_TX_DONE:
 3157                         /* An 802.11 frame has been transmitted. */
 3158                         ops->tx_done(sc, desc, data);
 3159                         break;
 3160 
 3161                 case IWN_RX_STATISTICS:
 3162                 case IWN_BEACON_STATISTICS:
 3163                         iwn_rx_statistics(sc, desc, data);
 3164                         break;
 3165 
 3166                 case IWN_BEACON_MISSED:
 3167                 {
 3168                         struct iwn_beacon_missed *miss =
 3169                             (struct iwn_beacon_missed *)(desc + 1);
 3170                         int misses;
 3171 
 3172                         bus_dmamap_sync(sc->rxq.data_dmat, data->map,
 3173                             BUS_DMASYNC_POSTREAD);
 3174                         misses = le32toh(miss->consecutive);
 3175 
 3176                         DPRINTF(sc, IWN_DEBUG_STATE,
 3177                             "%s: beacons missed %d/%d\n", __func__,
 3178                             misses, le32toh(miss->total));
 3179                         /*
 3180                          * If more than 5 consecutive beacons are missed,
 3181                          * reinitialize the sensitivity state machine.
 3182                          */
 3183                         if (vap->iv_state == IEEE80211_S_RUN &&
 3184                             (ic->ic_flags & IEEE80211_F_SCAN) == 0) {
 3185                                 if (misses > 5)
 3186                                         (void)iwn_init_sensitivity(sc);
 3187                                 if (misses >= vap->iv_bmissthreshold) {
 3188                                         IWN_UNLOCK(sc);
 3189                                         ieee80211_beacon_miss(ic);
 3190                                         IWN_LOCK(sc);
 3191                                 }
 3192                         }
 3193                         break;
 3194                 }
 3195                 case IWN_UC_READY:
 3196                 {
 3197                         struct iwn_ucode_info *uc =
 3198                             (struct iwn_ucode_info *)(desc + 1);
 3199 
 3200                         /* The microcontroller is ready. */
 3201                         bus_dmamap_sync(sc->rxq.data_dmat, data->map,
 3202                             BUS_DMASYNC_POSTREAD);
 3203                         DPRINTF(sc, IWN_DEBUG_RESET,
 3204                             "microcode alive notification version=%d.%d "
 3205                             "subtype=%x alive=%x\n", uc->major, uc->minor,
 3206                             uc->subtype, le32toh(uc->valid));
 3207 
 3208                         if (le32toh(uc->valid) != 1) {
 3209                                 device_printf(sc->sc_dev,
 3210                                     "microcontroller initialization failed");
 3211                                 break;
 3212                         }
 3213                         if (uc->subtype == IWN_UCODE_INIT) {
 3214                                 /* Save microcontroller report. */
 3215                                 memcpy(&sc->ucode_info, uc, sizeof (*uc));
 3216                         }
 3217                         /* Save the address of the error log in SRAM. */
 3218                         sc->errptr = le32toh(uc->errptr);
 3219                         break;
 3220                 }
 3221                 case IWN_STATE_CHANGED:
 3222                 {
 3223                         /*
 3224                          * State change allows hardware switch change to be
 3225                          * noted. However, we handle this in iwn_intr as we
 3226                          * get both the enable/disble intr.
 3227                          */
 3228                         bus_dmamap_sync(sc->rxq.data_dmat, data->map,
 3229                             BUS_DMASYNC_POSTREAD);
 3230 #ifdef  IWN_DEBUG
 3231                         uint32_t *status = (uint32_t *)(desc + 1);
 3232                         DPRINTF(sc, IWN_DEBUG_INTR, "state changed to %x\n",
 3233                             le32toh(*status));
 3234 #endif
 3235                         break;
 3236                 }
 3237                 case IWN_START_SCAN:
 3238                 {
 3239                         bus_dmamap_sync(sc->rxq.data_dmat, data->map,
 3240                             BUS_DMASYNC_POSTREAD);
 3241 #ifdef  IWN_DEBUG
 3242                         struct iwn_start_scan *scan =
 3243                             (struct iwn_start_scan *)(desc + 1);
 3244                         DPRINTF(sc, IWN_DEBUG_ANY,
 3245                             "%s: scanning channel %d status %x\n",
 3246                             __func__, scan->chan, le32toh(scan->status));
 3247 #endif
 3248                         break;
 3249                 }
 3250                 case IWN_STOP_SCAN:
 3251                 {
 3252                         bus_dmamap_sync(sc->rxq.data_dmat, data->map,
 3253                             BUS_DMASYNC_POSTREAD);
 3254 #ifdef  IWN_DEBUG
 3255                         struct iwn_stop_scan *scan =
 3256                             (struct iwn_stop_scan *)(desc + 1);
 3257                         DPRINTF(sc, IWN_DEBUG_STATE,
 3258                             "scan finished nchan=%d status=%d chan=%d\n",
 3259                             scan->nchan, scan->status, scan->chan);
 3260 #endif
 3261 
 3262                         IWN_UNLOCK(sc);
 3263                         ieee80211_scan_next(vap);
 3264                         IWN_LOCK(sc);
 3265                         break;
 3266                 }
 3267                 case IWN5000_CALIBRATION_RESULT:
 3268                         iwn5000_rx_calib_results(sc, desc, data);
 3269                         break;
 3270 
 3271                 case IWN5000_CALIBRATION_DONE:
 3272                         sc->sc_flags |= IWN_FLAG_CALIB_DONE;
 3273                         wakeup(sc);
 3274                         break;
 3275                 }
 3276 
 3277                 sc->rxq.cur = (sc->rxq.cur + 1) % IWN_RX_RING_COUNT;
 3278         }
 3279 
 3280         /* Tell the firmware what we have processed. */
 3281         hw = (hw == 0) ? IWN_RX_RING_COUNT - 1 : hw - 1;
 3282         IWN_WRITE(sc, IWN_FH_RX_WPTR, hw & ~7);
 3283 }
 3284 
 3285 /*
 3286  * Process an INT_WAKEUP interrupt raised when the microcontroller wakes up
 3287  * from power-down sleep mode.
 3288  */
 3289 static void
 3290 iwn_wakeup_intr(struct iwn_softc *sc)
 3291 {
 3292         int qid;
 3293 
 3294         DPRINTF(sc, IWN_DEBUG_RESET, "%s: ucode wakeup from power-down sleep\n",
 3295             __func__);
 3296 
 3297         /* Wakeup RX and TX rings. */
 3298         IWN_WRITE(sc, IWN_FH_RX_WPTR, sc->rxq.cur & ~7);
 3299         for (qid = 0; qid < sc->ntxqs; qid++) {
 3300                 struct iwn_tx_ring *ring = &sc->txq[qid];
 3301                 IWN_WRITE(sc, IWN_HBUS_TARG_WRPTR, qid << 8 | ring->cur);
 3302         }
 3303 }
 3304 
 3305 static void
 3306 iwn_rftoggle_intr(struct iwn_softc *sc)
 3307 {
 3308         struct ifnet *ifp = sc->sc_ifp;
 3309         struct ieee80211com *ic = ifp->if_l2com;
 3310         uint32_t tmp = IWN_READ(sc, IWN_GP_CNTRL);
 3311 
 3312         IWN_LOCK_ASSERT(sc);
 3313 
 3314         device_printf(sc->sc_dev, "RF switch: radio %s\n",
 3315             (tmp & IWN_GP_CNTRL_RFKILL) ? "enabled" : "disabled");
 3316         if (tmp & IWN_GP_CNTRL_RFKILL)
 3317                 ieee80211_runtask(ic, &sc->sc_radioon_task);
 3318         else
 3319                 ieee80211_runtask(ic, &sc->sc_radiooff_task);
 3320 }
 3321 
 3322 /*
 3323  * Dump the error log of the firmware when a firmware panic occurs.  Although
 3324  * we can't debug the firmware because it is neither open source nor free, it
 3325  * can help us to identify certain classes of problems.
 3326  */
 3327 static void
 3328 iwn_fatal_intr(struct iwn_softc *sc)
 3329 {
 3330         struct iwn_fw_dump dump;
 3331         int i;
 3332 
 3333         IWN_LOCK_ASSERT(sc);
 3334 
 3335         /* Force a complete recalibration on next init. */
 3336         sc->sc_flags &= ~IWN_FLAG_CALIB_DONE;
 3337 
 3338         /* Check that the error log address is valid. */
 3339         if (sc->errptr < IWN_FW_DATA_BASE ||
 3340             sc->errptr + sizeof (dump) >
 3341             IWN_FW_DATA_BASE + sc->fw_data_maxsz) {
 3342                 printf("%s: bad firmware error log address 0x%08x\n", __func__,
 3343                     sc->errptr);
 3344                 return;
 3345         }
 3346         if (iwn_nic_lock(sc) != 0) {
 3347                 printf("%s: could not read firmware error log\n", __func__);
 3348                 return;
 3349         }
 3350         /* Read firmware error log from SRAM. */
 3351         iwn_mem_read_region_4(sc, sc->errptr, (uint32_t *)&dump,
 3352             sizeof (dump) / sizeof (uint32_t));
 3353         iwn_nic_unlock(sc);
 3354 
 3355         if (dump.valid == 0) {
 3356                 printf("%s: firmware error log is empty\n", __func__);
 3357                 return;
 3358         }
 3359         printf("firmware error log:\n");
 3360         printf("  error type      = \"%s\" (0x%08X)\n",
 3361             (dump.id < nitems(iwn_fw_errmsg)) ?
 3362                 iwn_fw_errmsg[dump.id] : "UNKNOWN",
 3363             dump.id);
 3364         printf("  program counter = 0x%08X\n", dump.pc);
 3365         printf("  source line     = 0x%08X\n", dump.src_line);
 3366         printf("  error data      = 0x%08X%08X\n",
 3367             dump.error_data[0], dump.error_data[1]);
 3368         printf("  branch link     = 0x%08X%08X\n",
 3369             dump.branch_link[0], dump.branch_link[1]);
 3370         printf("  interrupt link  = 0x%08X%08X\n",
 3371             dump.interrupt_link[0], dump.interrupt_link[1]);
 3372         printf("  time            = %u\n", dump.time[0]);
 3373 
 3374         /* Dump driver status (TX and RX rings) while we're here. */
 3375         printf("driver status:\n");
 3376         for (i = 0; i < sc->ntxqs; i++) {
 3377                 struct iwn_tx_ring *ring = &sc->txq[i];
 3378                 printf("  tx ring %2d: qid=%-2d cur=%-3d queued=%-3d\n",
 3379                     i, ring->qid, ring->cur, ring->queued);
 3380         }
 3381         printf("  rx ring: cur=%d\n", sc->rxq.cur);
 3382 }
 3383 
 3384 static void
 3385 iwn_intr(void *arg)
 3386 {
 3387         struct iwn_softc *sc = arg;
 3388         struct ifnet *ifp = sc->sc_ifp;
 3389         uint32_t r1, r2, tmp;
 3390 
 3391         IWN_LOCK(sc);
 3392 
 3393         /* Disable interrupts. */
 3394         IWN_WRITE(sc, IWN_INT_MASK, 0);
 3395 
 3396         /* Read interrupts from ICT (fast) or from registers (slow). */
 3397         if (sc->sc_flags & IWN_FLAG_USE_ICT) {
 3398                 tmp = 0;
 3399                 while (sc->ict[sc->ict_cur] != 0) {
 3400                         tmp |= sc->ict[sc->ict_cur];
 3401                         sc->ict[sc->ict_cur] = 0;       /* Acknowledge. */
 3402                         sc->ict_cur = (sc->ict_cur + 1) % IWN_ICT_COUNT;
 3403                 }
 3404                 tmp = le32toh(tmp);
 3405                 if (tmp == 0xffffffff)  /* Shouldn't happen. */
 3406                         tmp = 0;
 3407                 else if (tmp & 0xc0000) /* Workaround a HW bug. */
 3408                         tmp |= 0x8000;
 3409                 r1 = (tmp & 0xff00) << 16 | (tmp & 0xff);
 3410                 r2 = 0; /* Unused. */
 3411         } else {
 3412                 r1 = IWN_READ(sc, IWN_INT);
 3413                 if (r1 == 0xffffffff || (r1 & 0xfffffff0) == 0xa5a5a5a0)
 3414                         return; /* Hardware gone! */
 3415                 r2 = IWN_READ(sc, IWN_FH_INT);
 3416         }
 3417 
 3418         DPRINTF(sc, IWN_DEBUG_INTR, "interrupt reg1=0x%08x reg2=0x%08x\n"
 3419     , r1, r2);
 3420 
 3421         if (r1 == 0 && r2 == 0)
 3422                 goto done;      /* Interrupt not for us. */
 3423 
 3424         /* Acknowledge interrupts. */
 3425         IWN_WRITE(sc, IWN_INT, r1);
 3426         if (!(sc->sc_flags & IWN_FLAG_USE_ICT))
 3427                 IWN_WRITE(sc, IWN_FH_INT, r2);
 3428 
 3429         if (r1 & IWN_INT_RF_TOGGLED) {
 3430                 iwn_rftoggle_intr(sc);
 3431                 goto done;
 3432         }
 3433         if (r1 & IWN_INT_CT_REACHED) {
 3434                 device_printf(sc->sc_dev, "%s: critical temperature reached!\n",
 3435                     __func__);
 3436         }
 3437         if (r1 & (IWN_INT_SW_ERR | IWN_INT_HW_ERR)) {
 3438                 device_printf(sc->sc_dev, "%s: fatal firmware error\n",
 3439                     __func__);
 3440 #ifdef  IWN_DEBUG
 3441                 iwn_debug_register(sc);
 3442 #endif
 3443                 /* Dump firmware error log and stop. */
 3444                 iwn_fatal_intr(sc);
 3445                 ifp->if_flags &= ~IFF_UP;
 3446                 iwn_stop_locked(sc);
 3447                 goto done;
 3448         }
 3449         if ((r1 & (IWN_INT_FH_RX | IWN_INT_SW_RX | IWN_INT_RX_PERIODIC)) ||
 3450             (r2 & IWN_FH_INT_RX)) {
 3451                 if (sc->sc_flags & IWN_FLAG_USE_ICT) {
 3452                         if (r1 & (IWN_INT_FH_RX | IWN_INT_SW_RX))
 3453                                 IWN_WRITE(sc, IWN_FH_INT, IWN_FH_INT_RX);
 3454                         IWN_WRITE_1(sc, IWN_INT_PERIODIC,
 3455                             IWN_INT_PERIODIC_DIS);
 3456                         iwn_notif_intr(sc);
 3457                         if (r1 & (IWN_INT_FH_RX | IWN_INT_SW_RX)) {
 3458                                 IWN_WRITE_1(sc, IWN_INT_PERIODIC,
 3459                                     IWN_INT_PERIODIC_ENA);
 3460                         }
 3461                 } else
 3462                         iwn_notif_intr(sc);
 3463         }
 3464 
 3465         if ((r1 & IWN_INT_FH_TX) || (r2 & IWN_FH_INT_TX)) {
 3466                 if (sc->sc_flags & IWN_FLAG_USE_ICT)
 3467                         IWN_WRITE(sc, IWN_FH_INT, IWN_FH_INT_TX);
 3468                 wakeup(sc);     /* FH DMA transfer completed. */
 3469         }
 3470 
 3471         if (r1 & IWN_INT_ALIVE)
 3472                 wakeup(sc);     /* Firmware is alive. */
 3473 
 3474         if (r1 & IWN_INT_WAKEUP)
 3475                 iwn_wakeup_intr(sc);
 3476 
 3477 done:
 3478         /* Re-enable interrupts. */
 3479         if (ifp->if_flags & IFF_UP)
 3480                 IWN_WRITE(sc, IWN_INT_MASK, sc->int_mask);
 3481 
 3482         IWN_UNLOCK(sc);
 3483 }
 3484 
 3485 /*
 3486  * Update TX scheduler ring when transmitting an 802.11 frame (4965AGN and
 3487  * 5000 adapters use a slightly different format).
 3488  */
 3489 static void
 3490 iwn4965_update_sched(struct iwn_softc *sc, int qid, int idx, uint8_t id,
 3491     uint16_t len)
 3492 {
 3493         uint16_t *w = &sc->sched[qid * IWN4965_SCHED_COUNT + idx];
 3494 
 3495         DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
 3496 
 3497         *w = htole16(len + 8);
 3498         bus_dmamap_sync(sc->sched_dma.tag, sc->sched_dma.map,
 3499             BUS_DMASYNC_PREWRITE);
 3500         if (idx < IWN_SCHED_WINSZ) {
 3501                 *(w + IWN_TX_RING_COUNT) = *w;
 3502                 bus_dmamap_sync(sc->sched_dma.tag, sc->sched_dma.map,
 3503                     BUS_DMASYNC_PREWRITE);
 3504         }
 3505 }
 3506 
 3507 static void
 3508 iwn5000_update_sched(struct iwn_softc *sc, int qid, int idx, uint8_t id,
 3509     uint16_t len)
 3510 {
 3511         uint16_t *w = &sc->sched[qid * IWN5000_SCHED_COUNT + idx];
 3512 
 3513         DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
 3514 
 3515         *w = htole16(id << 12 | (len + 8));
 3516         bus_dmamap_sync(sc->sched_dma.tag, sc->sched_dma.map,
 3517             BUS_DMASYNC_PREWRITE);
 3518         if (idx < IWN_SCHED_WINSZ) {
 3519                 *(w + IWN_TX_RING_COUNT) = *w;
 3520                 bus_dmamap_sync(sc->sched_dma.tag, sc->sched_dma.map,
 3521                     BUS_DMASYNC_PREWRITE);
 3522         }
 3523 }
 3524 
 3525 #ifdef notyet
 3526 static void
 3527 iwn5000_reset_sched(struct iwn_softc *sc, int qid, int idx)
 3528 {
 3529         uint16_t *w = &sc->sched[qid * IWN5000_SCHED_COUNT + idx];
 3530 
 3531         DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
 3532 
 3533         *w = (*w & htole16(0xf000)) | htole16(1);
 3534         bus_dmamap_sync(sc->sched_dma.tag, sc->sched_dma.map,
 3535             BUS_DMASYNC_PREWRITE);
 3536         if (idx < IWN_SCHED_WINSZ) {
 3537                 *(w + IWN_TX_RING_COUNT) = *w;
 3538                 bus_dmamap_sync(sc->sched_dma.tag, sc->sched_dma.map,
 3539                     BUS_DMASYNC_PREWRITE);
 3540         }
 3541 }
 3542 #endif
 3543 
 3544 static int
 3545 iwn_tx_data(struct iwn_softc *sc, struct mbuf *m, struct ieee80211_node *ni)
 3546 {
 3547         struct iwn_ops *ops = &sc->ops;
 3548         const struct ieee80211_txparam *tp;
 3549         struct ieee80211vap *vap = ni->ni_vap;
 3550         struct ieee80211com *ic = ni->ni_ic;
 3551         struct iwn_node *wn = (void *)ni;
 3552         struct iwn_tx_ring *ring;
 3553         struct iwn_tx_desc *desc;
 3554         struct iwn_tx_data *data;
 3555         struct iwn_tx_cmd *cmd;
 3556         struct iwn_cmd_data *tx;
 3557         struct ieee80211_frame *wh;
 3558         struct ieee80211_key *k = NULL;
 3559         struct mbuf *m1;
 3560         uint32_t flags;
 3561         uint16_t qos;
 3562         u_int hdrlen;
 3563         bus_dma_segment_t *seg, segs[IWN_MAX_SCATTER];
 3564         uint8_t tid, ridx, txant, type;
 3565         int ac, i, totlen, error, pad, nsegs = 0, rate;
 3566 
 3567         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
 3568 
 3569         IWN_LOCK_ASSERT(sc);
 3570 
 3571         wh = mtod(m, struct ieee80211_frame *);
 3572         hdrlen = ieee80211_anyhdrsize(wh);
 3573         type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
 3574 
 3575         /* Select EDCA Access Category and TX ring for this frame. */
 3576         if (IEEE80211_QOS_HAS_SEQ(wh)) {
 3577                 qos = ((const struct ieee80211_qosframe *)wh)->i_qos[0];
 3578                 tid = qos & IEEE80211_QOS_TID;
 3579         } else {
 3580                 qos = 0;
 3581                 tid = 0;
 3582         }
 3583         ac = M_WME_GETAC(m);
 3584         if (m->m_flags & M_AMPDU_MPDU) {
 3585                 struct ieee80211_tx_ampdu *tap = &ni->ni_tx_ampdu[ac];
 3586 
 3587                 if (!IEEE80211_AMPDU_RUNNING(tap)) {
 3588                         m_freem(m);
 3589                         return EINVAL;
 3590                 }
 3591 
 3592                 ac = *(int *)tap->txa_private;
 3593                 *(uint16_t *)wh->i_seq =
 3594                     htole16(ni->ni_txseqs[tid] << IEEE80211_SEQ_SEQ_SHIFT);
 3595                 ni->ni_txseqs[tid]++;
 3596         }
 3597         ring = &sc->txq[ac];
 3598         desc = &ring->desc[ring->cur];
 3599         data = &ring->data[ring->cur];
 3600 
 3601         /* Choose a TX rate index. */
 3602         tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)];
 3603         if (type == IEEE80211_FC0_TYPE_MGT)
 3604                 rate = tp->mgmtrate;
 3605         else if (IEEE80211_IS_MULTICAST(wh->i_addr1))
 3606                 rate = tp->mcastrate;
 3607         else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE)
 3608                 rate = tp->ucastrate;
 3609         else {
 3610                 /* XXX pass pktlen */
 3611                 (void) ieee80211_ratectl_rate(ni, NULL, 0);
 3612                 rate = ni->ni_txrate;
 3613         }
 3614         ridx = ieee80211_legacy_rate_lookup(ic->ic_rt,
 3615             rate & IEEE80211_RATE_VAL);
 3616 
 3617         /* Encrypt the frame if need be. */
 3618         if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) {
 3619                 /* Retrieve key for TX. */
 3620                 k = ieee80211_crypto_encap(ni, m);
 3621                 if (k == NULL) {
 3622                         m_freem(m);
 3623                         return ENOBUFS;
 3624                 }
 3625                 /* 802.11 header may have moved. */
 3626                 wh = mtod(m, struct ieee80211_frame *);
 3627         }
 3628         totlen = m->m_pkthdr.len;
 3629 
 3630         if (ieee80211_radiotap_active_vap(vap)) {
 3631                 struct iwn_tx_radiotap_header *tap = &sc->sc_txtap;
 3632 
 3633                 tap->wt_flags = 0;
 3634                 tap->wt_rate = rate;
 3635                 if (k != NULL)
 3636                         tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP;
 3637 
 3638                 ieee80211_radiotap_tx(vap, m);
 3639         }
 3640 
 3641         /* Prepare TX firmware command. */
 3642         cmd = &ring->cmd[ring->cur];
 3643         cmd->code = IWN_CMD_TX_DATA;
 3644         cmd->flags = 0;
 3645         cmd->qid = ring->qid;
 3646         cmd->idx = ring->cur;
 3647 
 3648         tx = (struct iwn_cmd_data *)cmd->data;
 3649         /* NB: No need to clear tx, all fields are reinitialized here. */
 3650         tx->scratch = 0;        /* clear "scratch" area */
 3651 
 3652         flags = 0;
 3653         if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
 3654                 /* Unicast frame, check if an ACK is expected. */
 3655                 if (!qos || (qos & IEEE80211_QOS_ACKPOLICY) !=
 3656                     IEEE80211_QOS_ACKPOLICY_NOACK)
 3657                         flags |= IWN_TX_NEED_ACK;
 3658         }
 3659         if ((wh->i_fc[0] &
 3660             (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) ==
 3661             (IEEE80211_FC0_TYPE_CTL | IEEE80211_FC0_SUBTYPE_BAR))
 3662                 flags |= IWN_TX_IMM_BA;         /* Cannot happen yet. */
 3663 
 3664         if (wh->i_fc[1] & IEEE80211_FC1_MORE_FRAG)
 3665                 flags |= IWN_TX_MORE_FRAG;      /* Cannot happen yet. */
 3666 
 3667         /* Check if frame must be protected using RTS/CTS or CTS-to-self. */
 3668         if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
 3669                 /* NB: Group frames are sent using CCK in 802.11b/g. */
 3670                 if (totlen + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) {
 3671                         flags |= IWN_TX_NEED_RTS;
 3672                 } else if ((ic->ic_flags & IEEE80211_F_USEPROT) &&
 3673                     ridx >= IWN_RIDX_OFDM6) {
 3674                         if (ic->ic_protmode == IEEE80211_PROT_CTSONLY)
 3675                                 flags |= IWN_TX_NEED_CTS;
 3676                         else if (ic->ic_protmode == IEEE80211_PROT_RTSCTS)
 3677                                 flags |= IWN_TX_NEED_RTS;
 3678                 }
 3679                 if (flags & (IWN_TX_NEED_RTS | IWN_TX_NEED_CTS)) {
 3680                         if (sc->hw_type != IWN_HW_REV_TYPE_4965) {
 3681                                 /* 5000 autoselects RTS/CTS or CTS-to-self. */
 3682                                 flags &= ~(IWN_TX_NEED_RTS | IWN_TX_NEED_CTS);
 3683                                 flags |= IWN_TX_NEED_PROTECTION;
 3684                         } else
 3685                                 flags |= IWN_TX_FULL_TXOP;
 3686                 }
 3687         }
 3688 
 3689         if (IEEE80211_IS_MULTICAST(wh->i_addr1) ||
 3690             type != IEEE80211_FC0_TYPE_DATA)
 3691                 tx->id = sc->broadcast_id;
 3692         else
 3693                 tx->id = wn->id;
 3694 
 3695         if (type == IEEE80211_FC0_TYPE_MGT) {
 3696                 uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
 3697 
 3698                 /* Tell HW to set timestamp in probe responses. */
 3699                 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP)
 3700                         flags |= IWN_TX_INSERT_TSTAMP;
 3701                 if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ ||
 3702                     subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ)
 3703                         tx->timeout = htole16(3);
 3704                 else
 3705                         tx->timeout = htole16(2);
 3706         } else
 3707                 tx->timeout = htole16(0);
 3708 
 3709         if (hdrlen & 3) {
 3710                 /* First segment length must be a multiple of 4. */
 3711                 flags |= IWN_TX_NEED_PADDING;
 3712                 pad = 4 - (hdrlen & 3);
 3713         } else
 3714                 pad = 0;
 3715 
 3716         tx->len = htole16(totlen);
 3717         tx->tid = tid;
 3718         tx->rts_ntries = 60;
 3719         tx->data_ntries = 15;
 3720         tx->lifetime = htole32(IWN_LIFETIME_INFINITE);
 3721         tx->rate = iwn_rate_to_plcp(sc, ni, rate);
 3722         if (tx->id == sc->broadcast_id) {
 3723                 /* Group or management frame. */
 3724                 tx->linkq = 0;
 3725                 /* XXX Alternate between antenna A and B? */
 3726                 txant = IWN_LSB(sc->txchainmask);
 3727                 tx->rate |= htole32(IWN_RFLAG_ANT(txant));
 3728         } else {
 3729                 tx->linkq = ni->ni_rates.rs_nrates - ridx - 1;
 3730                 flags |= IWN_TX_LINKQ;  /* enable MRR */
 3731         }
 3732         /* Set physical address of "scratch area". */
 3733         tx->loaddr = htole32(IWN_LOADDR(data->scratch_paddr));
 3734         tx->hiaddr = IWN_HIADDR(data->scratch_paddr);
 3735 
 3736         /* Copy 802.11 header in TX command. */
 3737         memcpy((uint8_t *)(tx + 1), wh, hdrlen);
 3738 
 3739         /* Trim 802.11 header. */
 3740         m_adj(m, hdrlen);
 3741         tx->security = 0;
 3742         tx->flags = htole32(flags);
 3743 
 3744         error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, m, segs,
 3745             &nsegs, BUS_DMA_NOWAIT);
 3746         if (error != 0) {
 3747                 if (error != EFBIG) {
 3748                         device_printf(sc->sc_dev,
 3749                             "%s: can't map mbuf (error %d)\n", __func__, error);
 3750                         m_freem(m);
 3751                         return error;
 3752                 }
 3753                 /* Too many DMA segments, linearize mbuf. */
 3754                 m1 = m_collapse(m, M_NOWAIT, IWN_MAX_SCATTER);
 3755                 if (m1 == NULL) {
 3756                         device_printf(sc->sc_dev,
 3757                             "%s: could not defrag mbuf\n", __func__);
 3758                         m_freem(m);
 3759                         return ENOBUFS;
 3760                 }
 3761                 m = m1;
 3762 
 3763                 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, m,
 3764                     segs, &nsegs, BUS_DMA_NOWAIT);
 3765                 if (error != 0) {
 3766                         device_printf(sc->sc_dev,
 3767                             "%s: can't map mbuf (error %d)\n", __func__, error);
 3768                         m_freem(m);
 3769                         return error;
 3770                 }
 3771         }
 3772 
 3773         data->m = m;
 3774         data->ni = ni;
 3775 
 3776         DPRINTF(sc, IWN_DEBUG_XMIT, "%s: qid %d idx %d len %d nsegs %d\n",
 3777             __func__, ring->qid, ring->cur, m->m_pkthdr.len, nsegs);
 3778 
 3779         /* Fill TX descriptor. */
 3780         desc->nsegs = 1;
 3781         if (m->m_len != 0)
 3782                 desc->nsegs += nsegs;
 3783         /* First DMA segment is used by the TX command. */
 3784         desc->segs[0].addr = htole32(IWN_LOADDR(data->cmd_paddr));
 3785         desc->segs[0].len  = htole16(IWN_HIADDR(data->cmd_paddr) |
 3786             (4 + sizeof (*tx) + hdrlen + pad) << 4);
 3787         /* Other DMA segments are for data payload. */
 3788         seg = &segs[0];
 3789         for (i = 1; i <= nsegs; i++) {
 3790                 desc->segs[i].addr = htole32(IWN_LOADDR(seg->ds_addr));
 3791                 desc->segs[i].len  = htole16(IWN_HIADDR(seg->ds_addr) |
 3792                     seg->ds_len << 4);
 3793                 seg++;
 3794         }
 3795 
 3796         bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE);
 3797         bus_dmamap_sync(ring->data_dmat, ring->cmd_dma.map,
 3798             BUS_DMASYNC_PREWRITE);
 3799         bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
 3800             BUS_DMASYNC_PREWRITE);
 3801 
 3802         /* Update TX scheduler. */
 3803         if (ring->qid >= sc->firstaggqueue)
 3804                 ops->update_sched(sc, ring->qid, ring->cur, tx->id, totlen);
 3805 
 3806         /* Kick TX ring. */
 3807         ring->cur = (ring->cur + 1) % IWN_TX_RING_COUNT;
 3808         IWN_WRITE(sc, IWN_HBUS_TARG_WRPTR, ring->qid << 8 | ring->cur);
 3809 
 3810         /* Mark TX ring as full if we reach a certain threshold. */
 3811         if (++ring->queued > IWN_TX_RING_HIMARK)
 3812                 sc->qfullmsk |= 1 << ring->qid;
 3813 
 3814         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__);
 3815 
 3816         return 0;
 3817 }
 3818 
 3819 static int
 3820 iwn_tx_data_raw(struct iwn_softc *sc, struct mbuf *m,
 3821     struct ieee80211_node *ni, const struct ieee80211_bpf_params *params)
 3822 {
 3823         struct iwn_ops *ops = &sc->ops;
 3824         struct ifnet *ifp = sc->sc_ifp;
 3825         struct ieee80211vap *vap = ni->ni_vap;
 3826         struct ieee80211com *ic = ifp->if_l2com;
 3827         struct iwn_tx_cmd *cmd;
 3828         struct iwn_cmd_data *tx;
 3829         struct ieee80211_frame *wh;
 3830         struct iwn_tx_ring *ring;
 3831         struct iwn_tx_desc *desc;
 3832         struct iwn_tx_data *data;
 3833         struct mbuf *m1;
 3834         bus_dma_segment_t *seg, segs[IWN_MAX_SCATTER];
 3835         uint32_t flags;
 3836         u_int hdrlen;
 3837         int ac, totlen, error, pad, nsegs = 0, i, rate;
 3838         uint8_t ridx, type, txant;
 3839 
 3840         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
 3841 
 3842         IWN_LOCK_ASSERT(sc);
 3843 
 3844         wh = mtod(m, struct ieee80211_frame *);
 3845         hdrlen = ieee80211_anyhdrsize(wh);
 3846         type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
 3847 
 3848         ac = params->ibp_pri & 3;
 3849 
 3850         ring = &sc->txq[ac];
 3851         desc = &ring->desc[ring->cur];
 3852         data = &ring->data[ring->cur];
 3853 
 3854         /* Choose a TX rate index. */
 3855         rate = params->ibp_rate0;
 3856         ridx = ieee80211_legacy_rate_lookup(ic->ic_rt,
 3857             rate & IEEE80211_RATE_VAL);
 3858         if (ridx == (uint8_t)-1) {
 3859                 /* XXX fall back to mcast/mgmt rate? */
 3860                 m_freem(m);
 3861                 return EINVAL;
 3862         }
 3863 
 3864         totlen = m->m_pkthdr.len;
 3865 
 3866         /* Prepare TX firmware command. */
 3867         cmd = &ring->cmd[ring->cur];
 3868         cmd->code = IWN_CMD_TX_DATA;
 3869         cmd->flags = 0;
 3870         cmd->qid = ring->qid;
 3871         cmd->idx = ring->cur;
 3872 
 3873         tx = (struct iwn_cmd_data *)cmd->data;
 3874         /* NB: No need to clear tx, all fields are reinitialized here. */
 3875         tx->scratch = 0;        /* clear "scratch" area */
 3876 
 3877         flags = 0;
 3878         if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0)
 3879                 flags |= IWN_TX_NEED_ACK;
 3880         if (params->ibp_flags & IEEE80211_BPF_RTS) {
 3881                 if (sc->hw_type != IWN_HW_REV_TYPE_4965) {
 3882                         /* 5000 autoselects RTS/CTS or CTS-to-self. */
 3883                         flags &= ~IWN_TX_NEED_RTS;
 3884                         flags |= IWN_TX_NEED_PROTECTION;
 3885                 } else
 3886                         flags |= IWN_TX_NEED_RTS | IWN_TX_FULL_TXOP;
 3887         }
 3888         if (params->ibp_flags & IEEE80211_BPF_CTS) {
 3889                 if (sc->hw_type != IWN_HW_REV_TYPE_4965) {
 3890                         /* 5000 autoselects RTS/CTS or CTS-to-self. */
 3891                         flags &= ~IWN_TX_NEED_CTS;
 3892                         flags |= IWN_TX_NEED_PROTECTION;
 3893                 } else
 3894                         flags |= IWN_TX_NEED_CTS | IWN_TX_FULL_TXOP;
 3895         }
 3896         if (type == IEEE80211_FC0_TYPE_MGT) {
 3897                 uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
 3898 
 3899                 /* Tell HW to set timestamp in probe responses. */
 3900                 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP)
 3901                         flags |= IWN_TX_INSERT_TSTAMP;
 3902 
 3903                 if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ ||
 3904                     subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ)
 3905                         tx->timeout = htole16(3);
 3906                 else
 3907                         tx->timeout = htole16(2);
 3908         } else
 3909                 tx->timeout = htole16(0);
 3910 
 3911         if (hdrlen & 3) {
 3912                 /* First segment length must be a multiple of 4. */
 3913                 flags |= IWN_TX_NEED_PADDING;
 3914                 pad = 4 - (hdrlen & 3);
 3915         } else
 3916                 pad = 0;
 3917 
 3918         if (ieee80211_radiotap_active_vap(vap)) {
 3919                 struct iwn_tx_radiotap_header *tap = &sc->sc_txtap;
 3920 
 3921                 tap->wt_flags = 0;
 3922                 tap->wt_rate = rate;
 3923 
 3924                 ieee80211_radiotap_tx(vap, m);
 3925         }
 3926 
 3927         tx->len = htole16(totlen);
 3928         tx->tid = 0;
 3929         tx->id = sc->broadcast_id;
 3930         tx->rts_ntries = params->ibp_try1;
 3931         tx->data_ntries = params->ibp_try0;
 3932         tx->lifetime = htole32(IWN_LIFETIME_INFINITE);
 3933 
 3934         /* XXX should just use  iwn_rate_to_plcp() */
 3935         tx->rate = htole32(rate2plcp(rate));
 3936         if (ridx < IWN_RIDX_OFDM6 &&
 3937             IEEE80211_IS_CHAN_2GHZ(ni->ni_chan))
 3938                 tx->rate |= htole32(IWN_RFLAG_CCK);
 3939 
 3940         /* Group or management frame. */
 3941         tx->linkq = 0;
 3942         txant = IWN_LSB(sc->txchainmask);
 3943         tx->rate |= htole32(IWN_RFLAG_ANT(txant));
 3944 
 3945         /* Set physical address of "scratch area". */
 3946         tx->loaddr = htole32(IWN_LOADDR(data->scratch_paddr));
 3947         tx->hiaddr = IWN_HIADDR(data->scratch_paddr);
 3948 
 3949         /* Copy 802.11 header in TX command. */
 3950         memcpy((uint8_t *)(tx + 1), wh, hdrlen);
 3951 
 3952         /* Trim 802.11 header. */
 3953         m_adj(m, hdrlen);
 3954         tx->security = 0;
 3955         tx->flags = htole32(flags);
 3956 
 3957         error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, m, segs,
 3958             &nsegs, BUS_DMA_NOWAIT);
 3959         if (error != 0) {
 3960                 if (error != EFBIG) {
 3961                         device_printf(sc->sc_dev,
 3962                             "%s: can't map mbuf (error %d)\n", __func__, error);
 3963                         m_freem(m);
 3964                         return error;
 3965                 }
 3966                 /* Too many DMA segments, linearize mbuf. */
 3967                 m1 = m_collapse(m, M_NOWAIT, IWN_MAX_SCATTER);
 3968                 if (m1 == NULL) {
 3969                         device_printf(sc->sc_dev,
 3970                             "%s: could not defrag mbuf\n", __func__);
 3971                         m_freem(m);
 3972                         return ENOBUFS;
 3973                 }
 3974                 m = m1;
 3975 
 3976                 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, m,
 3977                     segs, &nsegs, BUS_DMA_NOWAIT);
 3978                 if (error != 0) {
 3979                         device_printf(sc->sc_dev,
 3980                             "%s: can't map mbuf (error %d)\n", __func__, error);
 3981                         m_freem(m);
 3982                         return error;
 3983                 }
 3984         }
 3985 
 3986         data->m = m;
 3987         data->ni = ni;
 3988 
 3989         DPRINTF(sc, IWN_DEBUG_XMIT, "%s: qid %d idx %d len %d nsegs %d\n",
 3990             __func__, ring->qid, ring->cur, m->m_pkthdr.len, nsegs);
 3991 
 3992         /* Fill TX descriptor. */
 3993         desc->nsegs = 1;
 3994         if (m->m_len != 0)
 3995                 desc->nsegs += nsegs;
 3996         /* First DMA segment is used by the TX command. */
 3997         desc->segs[0].addr = htole32(IWN_LOADDR(data->cmd_paddr));
 3998         desc->segs[0].len  = htole16(IWN_HIADDR(data->cmd_paddr) |
 3999             (4 + sizeof (*tx) + hdrlen + pad) << 4);
 4000         /* Other DMA segments are for data payload. */
 4001         seg = &segs[0];
 4002         for (i = 1; i <= nsegs; i++) {
 4003                 desc->segs[i].addr = htole32(IWN_LOADDR(seg->ds_addr));
 4004                 desc->segs[i].len  = htole16(IWN_HIADDR(seg->ds_addr) |
 4005                     seg->ds_len << 4);
 4006                 seg++;
 4007         }
 4008 
 4009         bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE);
 4010         bus_dmamap_sync(ring->data_dmat, ring->cmd_dma.map,
 4011             BUS_DMASYNC_PREWRITE);
 4012         bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
 4013             BUS_DMASYNC_PREWRITE);
 4014 
 4015         /* Update TX scheduler. */
 4016         if (ring->qid >= sc->firstaggqueue)
 4017                 ops->update_sched(sc, ring->qid, ring->cur, tx->id, totlen);
 4018 
 4019         /* Kick TX ring. */
 4020         ring->cur = (ring->cur + 1) % IWN_TX_RING_COUNT;
 4021         IWN_WRITE(sc, IWN_HBUS_TARG_WRPTR, ring->qid << 8 | ring->cur);
 4022 
 4023         /* Mark TX ring as full if we reach a certain threshold. */
 4024         if (++ring->queued > IWN_TX_RING_HIMARK)
 4025                 sc->qfullmsk |= 1 << ring->qid;
 4026 
 4027         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__);
 4028 
 4029         return 0;
 4030 }
 4031 
 4032 static int
 4033 iwn_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
 4034     const struct ieee80211_bpf_params *params)
 4035 {
 4036         struct ieee80211com *ic = ni->ni_ic;
 4037         struct ifnet *ifp = ic->ic_ifp;
 4038         struct iwn_softc *sc = ifp->if_softc;
 4039         int error = 0;
 4040 
 4041         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
 4042 
 4043         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
 4044                 ieee80211_free_node(ni);
 4045                 m_freem(m);
 4046                 return ENETDOWN;
 4047         }
 4048 
 4049         IWN_LOCK(sc);
 4050         if (params == NULL) {
 4051                 /*
 4052                  * Legacy path; interpret frame contents to decide
 4053                  * precisely how to send the frame.
 4054                  */
 4055                 error = iwn_tx_data(sc, m, ni);
 4056         } else {
 4057                 /*
 4058                  * Caller supplied explicit parameters to use in
 4059                  * sending the frame.
 4060                  */
 4061                 error = iwn_tx_data_raw(sc, m, ni, params);
 4062         }
 4063         if (error != 0) {
 4064                 /* NB: m is reclaimed on tx failure */
 4065                 ieee80211_free_node(ni);
 4066                 ifp->if_oerrors++;
 4067         }
 4068         sc->sc_tx_timer = 5;
 4069 
 4070         IWN_UNLOCK(sc);
 4071 
 4072         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__);
 4073 
 4074         return error;
 4075 }
 4076 
 4077 static void
 4078 iwn_start(struct ifnet *ifp)
 4079 {
 4080         struct iwn_softc *sc = ifp->if_softc;
 4081 
 4082         IWN_LOCK(sc);
 4083         iwn_start_locked(ifp);
 4084         IWN_UNLOCK(sc);
 4085 }
 4086 
 4087 static void
 4088 iwn_start_locked(struct ifnet *ifp)
 4089 {
 4090         struct iwn_softc *sc = ifp->if_softc;
 4091         struct ieee80211_node *ni;
 4092         struct mbuf *m;
 4093 
 4094         IWN_LOCK_ASSERT(sc);
 4095 
 4096         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 ||
 4097             (ifp->if_drv_flags & IFF_DRV_OACTIVE))
 4098                 return;
 4099 
 4100         for (;;) {
 4101                 if (sc->qfullmsk != 0) {
 4102                         ifp->if_drv_flags |= IFF_DRV_OACTIVE;
 4103                         break;
 4104                 }
 4105                 IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
 4106                 if (m == NULL)
 4107                         break;
 4108                 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
 4109                 if (iwn_tx_data(sc, m, ni) != 0) {
 4110                         ieee80211_free_node(ni);
 4111                         ifp->if_oerrors++;
 4112                         continue;
 4113                 }
 4114                 sc->sc_tx_timer = 5;
 4115         }
 4116 }
 4117 
 4118 static void
 4119 iwn_watchdog(void *arg)
 4120 {
 4121         struct iwn_softc *sc = arg;
 4122         struct ifnet *ifp = sc->sc_ifp;
 4123         struct ieee80211com *ic = ifp->if_l2com;
 4124 
 4125         IWN_LOCK_ASSERT(sc);
 4126 
 4127         KASSERT(ifp->if_drv_flags & IFF_DRV_RUNNING, ("not running"));
 4128 
 4129         DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
 4130 
 4131         if (sc->sc_tx_timer > 0) {
 4132                 if (--sc->sc_tx_timer == 0) {
 4133                         if_printf(ifp, "device timeout\n");
 4134                         ieee80211_runtask(ic, &sc->sc_reinit_task);
 4135                         return;
 4136                 }
 4137         }
 4138         callout_reset(&sc->watchdog_to, hz, iwn_watchdog, sc);
 4139 }
 4140 
 4141 static int
 4142 iwn_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
 4143 {
 4144         struct iwn_softc *sc = ifp->if_softc;
 4145         struct ieee80211com *ic = ifp->if_l2com;
 4146         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
 4147         struct ifreq *ifr = (struct ifreq *) data;
 4148         int error = 0, startall = 0, stop = 0;
 4149 
 4150         switch (cmd) {
 4151         case SIOCGIFADDR:
 4152                 error = ether_ioctl(ifp, cmd, data);
 4153                 break;
 4154         case SIOCSIFFLAGS:
 4155                 IWN_LOCK(sc);
 4156                 if (ifp->if_flags & IFF_UP) {
 4157                         if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
 4158                                 iwn_init_locked(sc);
 4159                                 if (IWN_READ(sc, IWN_GP_CNTRL) & IWN_GP_CNTRL_RFKILL)
 4160                                         startall = 1;
 4161                                 else
 4162                                         stop = 1;
 4163                         }
 4164                 } else {
 4165                         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 4166                                 iwn_stop_locked(sc);
 4167                 }
 4168                 IWN_UNLOCK(sc);
 4169                 if (startall)
 4170                         ieee80211_start_all(ic);
 4171                 else if (vap != NULL && stop)
 4172                         ieee80211_stop(vap);
 4173                 break;
 4174         case SIOCGIFMEDIA:
 4175                 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
 4176                 break;
 4177         default:
 4178                 error = EINVAL;
 4179                 break;
 4180         }
 4181         return error;
 4182 }
 4183 
 4184 /*
 4185  * Send a command to the firmware.
 4186  */
 4187 static int
 4188 iwn_cmd(struct iwn_softc *sc, int code, const void *buf, int size, int async)
 4189 {
 4190         struct iwn_tx_ring *ring = &sc->txq[4];
 4191         struct iwn_tx_desc *desc;
 4192         struct iwn_tx_data *data;
 4193         struct iwn_tx_cmd *cmd;
 4194         struct mbuf *m;
 4195         bus_addr_t paddr;
 4196         int totlen, error;
 4197 
 4198         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
 4199 
 4200         if (async == 0)
 4201                 IWN_LOCK_ASSERT(sc);
 4202 
 4203         desc = &ring->desc[ring->cur];
 4204         data = &ring->data[ring->cur];
 4205         totlen = 4 + size;
 4206 
 4207         if (size > sizeof cmd->data) {
 4208                 /* Command is too large to fit in a descriptor. */
 4209                 if (totlen > MCLBYTES)
 4210                         return EINVAL;
 4211                 m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE);
 4212                 if (m == NULL)
 4213                         return ENOMEM;
 4214                 cmd = mtod(m, struct iwn_tx_cmd *);
 4215                 error = bus_dmamap_load(ring->data_dmat, data->map, cmd,
 4216                     totlen, iwn_dma_map_addr, &paddr, BUS_DMA_NOWAIT);
 4217                 if (error != 0) {
 4218                         m_freem(m);
 4219                         return error;
 4220                 }
 4221                 data->m = m;
 4222         } else {
 4223                 cmd = &ring->cmd[ring->cur];
 4224                 paddr = data->cmd_paddr;
 4225         }
 4226 
 4227         cmd->code = code;
 4228         cmd->flags = 0;
 4229         cmd->qid = ring->qid;
 4230         cmd->idx = ring->cur;
 4231         memcpy(cmd->data, buf, size);
 4232 
 4233         desc->nsegs = 1;
 4234         desc->segs[0].addr = htole32(IWN_LOADDR(paddr));
 4235         desc->segs[0].len  = htole16(IWN_HIADDR(paddr) | totlen << 4);
 4236 
 4237         DPRINTF(sc, IWN_DEBUG_CMD, "%s: %s (0x%x) flags %d qid %d idx %d\n",
 4238             __func__, iwn_intr_str(cmd->code), cmd->code,
 4239             cmd->flags, cmd->qid, cmd->idx);
 4240 
 4241         if (size > sizeof cmd->data) {
 4242                 bus_dmamap_sync(ring->data_dmat, data->map,
 4243                     BUS_DMASYNC_PREWRITE);
 4244         } else {
 4245                 bus_dmamap_sync(ring->data_dmat, ring->cmd_dma.map,
 4246                     BUS_DMASYNC_PREWRITE);
 4247         }
 4248         bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
 4249             BUS_DMASYNC_PREWRITE);
 4250 
 4251         /* Kick command ring. */
 4252         ring->cur = (ring->cur + 1) % IWN_TX_RING_COUNT;
 4253         IWN_WRITE(sc, IWN_HBUS_TARG_WRPTR, ring->qid << 8 | ring->cur);
 4254 
 4255         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__);
 4256 
 4257         return async ? 0 : msleep(desc, &sc->sc_mtx, PCATCH, "iwncmd", hz);
 4258 }
 4259 
 4260 static int
 4261 iwn4965_add_node(struct iwn_softc *sc, struct iwn_node_info *node, int async)
 4262 {
 4263         struct iwn4965_node_info hnode;
 4264         caddr_t src, dst;
 4265 
 4266         DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
 4267 
 4268         /*
 4269          * We use the node structure for 5000 Series internally (it is
 4270          * a superset of the one for 4965AGN). We thus copy the common
 4271          * fields before sending the command.
 4272          */
 4273         src = (caddr_t)node;
 4274         dst = (caddr_t)&hnode;
 4275         memcpy(dst, src, 48);
 4276         /* Skip TSC, RX MIC and TX MIC fields from ``src''. */
 4277         memcpy(dst + 48, src + 72, 20);
 4278         return iwn_cmd(sc, IWN_CMD_ADD_NODE, &hnode, sizeof hnode, async);
 4279 }
 4280 
 4281 static int
 4282 iwn5000_add_node(struct iwn_softc *sc, struct iwn_node_info *node, int async)
 4283 {
 4284 
 4285         DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
 4286 
 4287         /* Direct mapping. */
 4288         return iwn_cmd(sc, IWN_CMD_ADD_NODE, node, sizeof (*node), async);
 4289 }
 4290 
 4291 static int
 4292 iwn_set_link_quality(struct iwn_softc *sc, struct ieee80211_node *ni)
 4293 {
 4294 #define RV(v)   ((v) & IEEE80211_RATE_VAL)
 4295         struct iwn_node *wn = (void *)ni;
 4296         struct ieee80211_rateset *rs = &ni->ni_rates;
 4297         struct iwn_cmd_link_quality linkq;
 4298         uint8_t txant;
 4299         int i, rate, txrate;
 4300 
 4301         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
 4302 
 4303         /* Use the first valid TX antenna. */
 4304         txant = IWN_LSB(sc->txchainmask);
 4305 
 4306         memset(&linkq, 0, sizeof linkq);
 4307         linkq.id = wn->id;
 4308         linkq.antmsk_1stream = txant;
 4309         linkq.antmsk_2stream = IWN_ANT_AB;
 4310         linkq.ampdu_max = 64;
 4311         linkq.ampdu_threshold = 3;
 4312         linkq.ampdu_limit = htole16(4000);      /* 4ms */
 4313 
 4314         /* Start at highest available bit-rate. */
 4315         if (IEEE80211_IS_CHAN_HT(ni->ni_chan))
 4316                 txrate = ni->ni_htrates.rs_nrates - 1;
 4317         else
 4318                 txrate = rs->rs_nrates - 1;
 4319         for (i = 0; i < IWN_MAX_TX_RETRIES; i++) {
 4320                 uint32_t plcp;
 4321 
 4322                 if (IEEE80211_IS_CHAN_HT(ni->ni_chan))
 4323                         rate = IEEE80211_RATE_MCS | txrate;
 4324                 else
 4325                         rate = RV(rs->rs_rates[txrate]);
 4326 
 4327                 /* Do rate -> PLCP config mapping */
 4328                 plcp = iwn_rate_to_plcp(sc, ni, rate);
 4329                 linkq.retry[i] = plcp;
 4330 
 4331                 /* Special case for dual-stream rates? */
 4332                 if ((le32toh(plcp) & IWN_RFLAG_MCS) &&
 4333                     RV(le32toh(plcp)) > 7)
 4334                         linkq.mimo = i + 1;
 4335 
 4336                 /* Next retry at immediate lower bit-rate. */
 4337                 if (txrate > 0)
 4338                         txrate--;
 4339         }
 4340 
 4341         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__);
 4342 
 4343         return iwn_cmd(sc, IWN_CMD_LINK_QUALITY, &linkq, sizeof linkq, 1);
 4344 #undef  RV
 4345 }
 4346 
 4347 /*
 4348  * Broadcast node is used to send group-addressed and management frames.
 4349  */
 4350 static int
 4351 iwn_add_broadcast_node(struct iwn_softc *sc, int async)
 4352 {
 4353         struct iwn_ops *ops = &sc->ops;
 4354         struct ifnet *ifp = sc->sc_ifp;
 4355         struct ieee80211com *ic = ifp->if_l2com;
 4356         struct iwn_node_info node;
 4357         struct iwn_cmd_link_quality linkq;
 4358         uint8_t txant;
 4359         int i, error;
 4360 
 4361         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
 4362 
 4363         sc->rxon = &sc->rx_on[IWN_RXON_BSS_CTX];
 4364 
 4365         memset(&node, 0, sizeof node);
 4366         IEEE80211_ADDR_COPY(node.macaddr, ifp->if_broadcastaddr);
 4367         node.id = sc->broadcast_id;
 4368         DPRINTF(sc, IWN_DEBUG_RESET, "%s: adding broadcast node\n", __func__);
 4369         if ((error = ops->add_node(sc, &node, async)) != 0)
 4370                 return error;
 4371 
 4372         /* Use the first valid TX antenna. */
 4373         txant = IWN_LSB(sc->txchainmask);
 4374 
 4375         memset(&linkq, 0, sizeof linkq);
 4376         linkq.id = sc->broadcast_id;
 4377         linkq.antmsk_1stream = txant;
 4378         linkq.antmsk_2stream = IWN_ANT_AB;
 4379         linkq.ampdu_max = 64;
 4380         linkq.ampdu_threshold = 3;
 4381         linkq.ampdu_limit = htole16(4000);      /* 4ms */
 4382 
 4383         /* Use lowest mandatory bit-rate. */
 4384         if (IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan))
 4385                 linkq.retry[0] = htole32(0xd);
 4386         else
 4387                 linkq.retry[0] = htole32(10 | IWN_RFLAG_CCK);
 4388         linkq.retry[0] |= htole32(IWN_RFLAG_ANT(txant));
 4389         /* Use same bit-rate for all TX retries. */
 4390         for (i = 1; i < IWN_MAX_TX_RETRIES; i++) {
 4391                 linkq.retry[i] = linkq.retry[0];
 4392         }
 4393 
 4394         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__);
 4395 
 4396         return iwn_cmd(sc, IWN_CMD_LINK_QUALITY, &linkq, sizeof linkq, async);
 4397 }
 4398 
 4399 static int
 4400 iwn_updateedca(struct ieee80211com *ic)
 4401 {
 4402 #define IWN_EXP2(x)     ((1 << (x)) - 1)        /* CWmin = 2^ECWmin - 1 */
 4403         struct iwn_softc *sc = ic->ic_ifp->if_softc;
 4404         struct iwn_edca_params cmd;
 4405         int aci;
 4406 
 4407         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
 4408 
 4409         memset(&cmd, 0, sizeof cmd);
 4410         cmd.flags = htole32(IWN_EDCA_UPDATE);
 4411         for (aci = 0; aci < WME_NUM_AC; aci++) {
 4412                 const struct wmeParams *ac =
 4413                     &ic->ic_wme.wme_chanParams.cap_wmeParams[aci];
 4414                 cmd.ac[aci].aifsn = ac->wmep_aifsn;
 4415                 cmd.ac[aci].cwmin = htole16(IWN_EXP2(ac->wmep_logcwmin));
 4416                 cmd.ac[aci].cwmax = htole16(IWN_EXP2(ac->wmep_logcwmax));
 4417                 cmd.ac[aci].txoplimit =
 4418                     htole16(IEEE80211_TXOP_TO_US(ac->wmep_txopLimit));
 4419         }
 4420         IEEE80211_UNLOCK(ic);
 4421         IWN_LOCK(sc);
 4422         (void)iwn_cmd(sc, IWN_CMD_EDCA_PARAMS, &cmd, sizeof cmd, 1);
 4423         IWN_UNLOCK(sc);
 4424         IEEE80211_LOCK(ic);
 4425 
 4426         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__);
 4427 
 4428         return 0;
 4429 #undef IWN_EXP2
 4430 }
 4431 
 4432 static void
 4433 iwn_update_mcast(struct ifnet *ifp)
 4434 {
 4435         /* Ignore */
 4436 }
 4437 
 4438 static void
 4439 iwn_set_led(struct iwn_softc *sc, uint8_t which, uint8_t off, uint8_t on)
 4440 {
 4441         struct iwn_cmd_led led;
 4442 
 4443         DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
 4444 
 4445         /* Clear microcode LED ownership. */
 4446         IWN_CLRBITS(sc, IWN_LED, IWN_LED_BSM_CTRL);
 4447 
 4448         led.which = which;
 4449         led.unit = htole32(10000);      /* on/off in unit of 100ms */
 4450         led.off = off;
 4451         led.on = on;
 4452         (void)iwn_cmd(sc, IWN_CMD_SET_LED, &led, sizeof led, 1);
 4453 }
 4454 
 4455 /*
 4456  * Set the critical temperature at which the firmware will stop the radio
 4457  * and notify us.
 4458  */
 4459 static int
 4460 iwn_set_critical_temp(struct iwn_softc *sc)
 4461 {
 4462         struct iwn_critical_temp crit;
 4463         int32_t temp;
 4464 
 4465         DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
 4466 
 4467         IWN_WRITE(sc, IWN_UCODE_GP1_CLR, IWN_UCODE_GP1_CTEMP_STOP_RF);
 4468 
 4469         if (sc->hw_type == IWN_HW_REV_TYPE_5150)
 4470                 temp = (IWN_CTOK(110) - sc->temp_off) * -5;
 4471         else if (sc->hw_type == IWN_HW_REV_TYPE_4965)
 4472                 temp = IWN_CTOK(110);
 4473         else
 4474                 temp = 110;
 4475         memset(&crit, 0, sizeof crit);
 4476         crit.tempR = htole32(temp);
 4477         DPRINTF(sc, IWN_DEBUG_RESET, "setting critical temp to %d\n", temp);
 4478         return iwn_cmd(sc, IWN_CMD_SET_CRITICAL_TEMP, &crit, sizeof crit, 0);
 4479 }
 4480 
 4481 static int
 4482 iwn_set_timing(struct iwn_softc *sc, struct ieee80211_node *ni)
 4483 {
 4484         struct iwn_cmd_timing cmd;
 4485         uint64_t val, mod;
 4486 
 4487         DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
 4488 
 4489         memset(&cmd, 0, sizeof cmd);
 4490         memcpy(&cmd.tstamp, ni->ni_tstamp.data, sizeof (uint64_t));
 4491         cmd.bintval = htole16(ni->ni_intval);
 4492         cmd.lintval = htole16(10);
 4493 
 4494         /* Compute remaining time until next beacon. */
 4495         val = (uint64_t)ni->ni_intval * IEEE80211_DUR_TU;
 4496         mod = le64toh(cmd.tstamp) % val;
 4497         cmd.binitval = htole32((uint32_t)(val - mod));
 4498 
 4499         DPRINTF(sc, IWN_DEBUG_RESET, "timing bintval=%u tstamp=%ju, init=%u\n",
 4500             ni->ni_intval, le64toh(cmd.tstamp), (uint32_t)(val - mod));
 4501 
 4502         return iwn_cmd(sc, IWN_CMD_TIMING, &cmd, sizeof cmd, 1);
 4503 }
 4504 
 4505 static void
 4506 iwn4965_power_calibration(struct iwn_softc *sc, int temp)
 4507 {
 4508         struct ifnet *ifp = sc->sc_ifp;
 4509         struct ieee80211com *ic = ifp->if_l2com;
 4510 
 4511         DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
 4512 
 4513         /* Adjust TX power if need be (delta >= 3 degC). */
 4514         DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s: temperature %d->%d\n",
 4515             __func__, sc->temp, temp);
 4516         if (abs(temp - sc->temp) >= 3) {
 4517                 /* Record temperature of last calibration. */
 4518                 sc->temp = temp;
 4519                 (void)iwn4965_set_txpower(sc, ic->ic_bsschan, 1);
 4520         }
 4521 }
 4522 
 4523 /*
 4524  * Set TX power for current channel (each rate has its own power settings).
 4525  * This function takes into account the regulatory information from EEPROM,
 4526  * the current temperature and the current voltage.
 4527  */
 4528 static int
 4529 iwn4965_set_txpower(struct iwn_softc *sc, struct ieee80211_channel *ch,
 4530     int async)
 4531 {
 4532 /* Fixed-point arithmetic division using a n-bit fractional part. */
 4533 #define fdivround(a, b, n)      \
 4534         ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n))
 4535 /* Linear interpolation. */
 4536 #define interpolate(x, x1, y1, x2, y2, n)       \
 4537         ((y1) + fdivround(((int)(x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n))
 4538 
 4539         static const int tdiv[IWN_NATTEN_GROUPS] = { 9, 8, 8, 8, 6 };
 4540         struct iwn_ucode_info *uc = &sc->ucode_info;
 4541         struct iwn4965_cmd_txpower cmd;
 4542         struct iwn4965_eeprom_chan_samples *chans;
 4543         const uint8_t *rf_gain, *dsp_gain;
 4544         int32_t vdiff, tdiff;
 4545         int i, c, grp, maxpwr;
 4546         uint8_t chan;
 4547 
 4548         sc->rxon = &sc->rx_on[IWN_RXON_BSS_CTX];
 4549         /* Retrieve current channel from last RXON. */
 4550         chan = sc->rxon->chan;
 4551         DPRINTF(sc, IWN_DEBUG_RESET, "setting TX power for channel %d\n",
 4552             chan);
 4553 
 4554         memset(&cmd, 0, sizeof cmd);
 4555         cmd.band = IEEE80211_IS_CHAN_5GHZ(ch) ? 0 : 1;
 4556         cmd.chan = chan;
 4557 
 4558         if (IEEE80211_IS_CHAN_5GHZ(ch)) {
 4559                 maxpwr   = sc->maxpwr5GHz;
 4560                 rf_gain  = iwn4965_rf_gain_5ghz;
 4561                 dsp_gain = iwn4965_dsp_gain_5ghz;
 4562         } else {
 4563                 maxpwr   = sc->maxpwr2GHz;
 4564                 rf_gain  = iwn4965_rf_gain_2ghz;
 4565                 dsp_gain = iwn4965_dsp_gain_2ghz;
 4566         }
 4567 
 4568         /* Compute voltage compensation. */
 4569         vdiff = ((int32_t)le32toh(uc->volt) - sc->eeprom_voltage) / 7;
 4570         if (vdiff > 0)
 4571                 vdiff *= 2;
 4572         if (abs(vdiff) > 2)
 4573                 vdiff = 0;
 4574         DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_TXPOW,
 4575             "%s: voltage compensation=%d (UCODE=%d, EEPROM=%d)\n",
 4576             __func__, vdiff, le32toh(uc->volt), sc->eeprom_voltage);
 4577 
 4578         /* Get channel attenuation group. */
 4579         if (chan <= 20)         /* 1-20 */
 4580                 grp = 4;
 4581         else if (chan <= 43)    /* 34-43 */
 4582                 grp = 0;
 4583         else if (chan <= 70)    /* 44-70 */
 4584                 grp = 1;
 4585         else if (chan <= 124)   /* 71-124 */
 4586                 grp = 2;
 4587         else                    /* 125-200 */
 4588                 grp = 3;
 4589         DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_TXPOW,
 4590             "%s: chan %d, attenuation group=%d\n", __func__, chan, grp);
 4591 
 4592         /* Get channel sub-band. */
 4593         for (i = 0; i < IWN_NBANDS; i++)
 4594                 if (sc->bands[i].lo != 0 &&
 4595                     sc->bands[i].lo <= chan && chan <= sc->bands[i].hi)
 4596                         break;
 4597         if (i == IWN_NBANDS)    /* Can't happen in real-life. */
 4598                 return EINVAL;
 4599         chans = sc->bands[i].chans;
 4600         DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_TXPOW,
 4601             "%s: chan %d sub-band=%d\n", __func__, chan, i);
 4602 
 4603         for (c = 0; c < 2; c++) {
 4604                 uint8_t power, gain, temp;
 4605                 int maxchpwr, pwr, ridx, idx;
 4606 
 4607                 power = interpolate(chan,
 4608                     chans[0].num, chans[0].samples[c][1].power,
 4609                     chans[1].num, chans[1].samples[c][1].power, 1);
 4610                 gain  = interpolate(chan,
 4611                     chans[0].num, chans[0].samples[c][1].gain,
 4612                     chans[1].num, chans[1].samples[c][1].gain, 1);
 4613                 temp  = interpolate(chan,
 4614                     chans[0].num, chans[0].samples[c][1].temp,
 4615                     chans[1].num, chans[1].samples[c][1].temp, 1);
 4616                 DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_TXPOW,
 4617                     "%s: Tx chain %d: power=%d gain=%d temp=%d\n",
 4618                     __func__, c, power, gain, temp);
 4619 
 4620                 /* Compute temperature compensation. */
 4621                 tdiff = ((sc->temp - temp) * 2) / tdiv[grp];
 4622                 DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_TXPOW,
 4623                     "%s: temperature compensation=%d (current=%d, EEPROM=%d)\n",
 4624                     __func__, tdiff, sc->temp, temp);
 4625 
 4626                 for (ridx = 0; ridx <= IWN_RIDX_MAX; ridx++) {
 4627                         /* Convert dBm to half-dBm. */
 4628                         maxchpwr = sc->maxpwr[chan] * 2;
 4629                         if ((ridx / 8) & 1)
 4630                                 maxchpwr -= 6;  /* MIMO 2T: -3dB */
 4631 
 4632                         pwr = maxpwr;
 4633 
 4634                         /* Adjust TX power based on rate. */
 4635                         if ((ridx % 8) == 5)
 4636                                 pwr -= 15;      /* OFDM48: -7.5dB */
 4637                         else if ((ridx % 8) == 6)
 4638                                 pwr -= 17;      /* OFDM54: -8.5dB */
 4639                         else if ((ridx % 8) == 7)
 4640                                 pwr -= 20;      /* OFDM60: -10dB */
 4641                         else
 4642                                 pwr -= 10;      /* Others: -5dB */
 4643 
 4644                         /* Do not exceed channel max TX power. */
 4645                         if (pwr > maxchpwr)
 4646                                 pwr = maxchpwr;
 4647 
 4648                         idx = gain - (pwr - power) - tdiff - vdiff;
 4649                         if ((ridx / 8) & 1)     /* MIMO */
 4650                                 idx += (int32_t)le32toh(uc->atten[grp][c]);
 4651 
 4652                         if (cmd.band == 0)
 4653                                 idx += 9;       /* 5GHz */
 4654                         if (ridx == IWN_RIDX_MAX)
 4655                                 idx += 5;       /* CCK */
 4656 
 4657                         /* Make sure idx stays in a valid range. */
 4658                         if (idx < 0)
 4659                                 idx = 0;
 4660                         else if (idx > IWN4965_MAX_PWR_INDEX)
 4661                                 idx = IWN4965_MAX_PWR_INDEX;
 4662 
 4663                         DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_TXPOW,
 4664                             "%s: Tx chain %d, rate idx %d: power=%d\n",
 4665                             __func__, c, ridx, idx);
 4666                         cmd.power[ridx].rf_gain[c] = rf_gain[idx];
 4667                         cmd.power[ridx].dsp_gain[c] = dsp_gain[idx];
 4668                 }
 4669         }
 4670 
 4671         DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_TXPOW,
 4672             "%s: set tx power for chan %d\n", __func__, chan);
 4673         return iwn_cmd(sc, IWN_CMD_TXPOWER, &cmd, sizeof cmd, async);
 4674 
 4675 #undef interpolate
 4676 #undef fdivround
 4677 }
 4678 
 4679 static int
 4680 iwn5000_set_txpower(struct iwn_softc *sc, struct ieee80211_channel *ch,
 4681     int async)
 4682 {
 4683         struct iwn5000_cmd_txpower cmd;
 4684 
 4685         DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
 4686 
 4687         /*
 4688          * TX power calibration is handled automatically by the firmware
 4689          * for 5000 Series.
 4690          */
 4691         memset(&cmd, 0, sizeof cmd);
 4692         cmd.global_limit = 2 * IWN5000_TXPOWER_MAX_DBM; /* 16 dBm */
 4693         cmd.flags = IWN5000_TXPOWER_NO_CLOSED;
 4694         cmd.srv_limit = IWN5000_TXPOWER_AUTO;
 4695         DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s: setting TX power\n", __func__);
 4696         return iwn_cmd(sc, IWN_CMD_TXPOWER_DBM, &cmd, sizeof cmd, async);
 4697 }
 4698 
 4699 /*
 4700  * Retrieve the maximum RSSI (in dBm) among receivers.
 4701  */
 4702 static int
 4703 iwn4965_get_rssi(struct iwn_softc *sc, struct iwn_rx_stat *stat)
 4704 {
 4705         struct iwn4965_rx_phystat *phy = (void *)stat->phybuf;
 4706         uint8_t mask, agc;
 4707         int rssi;
 4708 
 4709         DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
 4710 
 4711         mask = (le16toh(phy->antenna) >> 4) & IWN_ANT_ABC;
 4712         agc  = (le16toh(phy->agc) >> 7) & 0x7f;
 4713 
 4714         rssi = 0;
 4715         if (mask & IWN_ANT_A)
 4716                 rssi = MAX(rssi, phy->rssi[0]);
 4717         if (mask & IWN_ANT_B)
 4718                 rssi = MAX(rssi, phy->rssi[2]);
 4719         if (mask & IWN_ANT_C)
 4720                 rssi = MAX(rssi, phy->rssi[4]);
 4721 
 4722         DPRINTF(sc, IWN_DEBUG_RECV,
 4723             "%s: agc %d mask 0x%x rssi %d %d %d result %d\n", __func__, agc,
 4724             mask, phy->rssi[0], phy->rssi[2], phy->rssi[4],
 4725             rssi - agc - IWN_RSSI_TO_DBM);
 4726         return rssi - agc - IWN_RSSI_TO_DBM;
 4727 }
 4728 
 4729 static int
 4730 iwn5000_get_rssi(struct iwn_softc *sc, struct iwn_rx_stat *stat)
 4731 {
 4732         struct iwn5000_rx_phystat *phy = (void *)stat->phybuf;
 4733         uint8_t agc;
 4734         int rssi;
 4735 
 4736         DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
 4737 
 4738         agc = (le32toh(phy->agc) >> 9) & 0x7f;
 4739 
 4740         rssi = MAX(le16toh(phy->rssi[0]) & 0xff,
 4741                    le16toh(phy->rssi[1]) & 0xff);
 4742         rssi = MAX(le16toh(phy->rssi[2]) & 0xff, rssi);
 4743 
 4744         DPRINTF(sc, IWN_DEBUG_RECV,
 4745             "%s: agc %d rssi %d %d %d result %d\n", __func__, agc,
 4746             phy->rssi[0], phy->rssi[1], phy->rssi[2],
 4747             rssi - agc - IWN_RSSI_TO_DBM);
 4748         return rssi - agc - IWN_RSSI_TO_DBM;
 4749 }
 4750 
 4751 /*
 4752  * Retrieve the average noise (in dBm) among receivers.
 4753  */
 4754 static int
 4755 iwn_get_noise(const struct iwn_rx_general_stats *stats)
 4756 {
 4757         int i, total, nbant, noise;
 4758 
 4759         total = nbant = 0;
 4760         for (i = 0; i < 3; i++) {
 4761                 if ((noise = le32toh(stats->noise[i]) & 0xff) == 0)
 4762                         continue;
 4763                 total += noise;
 4764                 nbant++;
 4765         }
 4766         /* There should be at least one antenna but check anyway. */
 4767         return (nbant == 0) ? -127 : (total / nbant) - 107;
 4768 }
 4769 
 4770 /*
 4771  * Compute temperature (in degC) from last received statistics.
 4772  */
 4773 static int
 4774 iwn4965_get_temperature(struct iwn_softc *sc)
 4775 {
 4776         struct iwn_ucode_info *uc = &sc->ucode_info;
 4777         int32_t r1, r2, r3, r4, temp;
 4778 
 4779         DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
 4780 
 4781         r1 = le32toh(uc->temp[0].chan20MHz);
 4782         r2 = le32toh(uc->temp[1].chan20MHz);
 4783         r3 = le32toh(uc->temp[2].chan20MHz);
 4784         r4 = le32toh(sc->rawtemp);
 4785 
 4786         if (r1 == r3)   /* Prevents division by 0 (should not happen). */
 4787                 return 0;
 4788 
 4789         /* Sign-extend 23-bit R4 value to 32-bit. */
 4790         r4 = ((r4 & 0xffffff) ^ 0x800000) - 0x800000;
 4791         /* Compute temperature in Kelvin. */
 4792         temp = (259 * (r4 - r2)) / (r3 - r1);
 4793         temp = (temp * 97) / 100 + 8;
 4794 
 4795         DPRINTF(sc, IWN_DEBUG_ANY, "temperature %dK/%dC\n", temp,
 4796             IWN_KTOC(temp));
 4797         return IWN_KTOC(temp);
 4798 }
 4799 
 4800 static int
 4801 iwn5000_get_temperature(struct iwn_softc *sc)
 4802 {
 4803         int32_t temp;
 4804 
 4805         DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
 4806 
 4807         /*
 4808          * Temperature is not used by the driver for 5000 Series because
 4809          * TX power calibration is handled by firmware.
 4810          */
 4811         temp = le32toh(sc->rawtemp);
 4812         if (sc->hw_type == IWN_HW_REV_TYPE_5150) {
 4813                 temp = (temp / -5) + sc->temp_off;
 4814                 temp = IWN_KTOC(temp);
 4815         }
 4816         return temp;
 4817 }
 4818 
 4819 /*
 4820  * Initialize sensitivity calibration state machine.
 4821  */
 4822 static int
 4823 iwn_init_sensitivity(struct iwn_softc *sc)
 4824 {
 4825         struct iwn_ops *ops = &sc->ops;
 4826         struct iwn_calib_state *calib = &sc->calib;
 4827         uint32_t flags;
 4828         int error;
 4829 
 4830         DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
 4831 
 4832         /* Reset calibration state machine. */
 4833         memset(calib, 0, sizeof (*calib));
 4834         calib->state = IWN_CALIB_STATE_INIT;
 4835         calib->cck_state = IWN_CCK_STATE_HIFA;
 4836         /* Set initial correlation values. */
 4837         calib->ofdm_x1     = sc->limits->min_ofdm_x1;
 4838         calib->ofdm_mrc_x1 = sc->limits->min_ofdm_mrc_x1;
 4839         calib->ofdm_x4     = sc->limits->min_ofdm_x4;
 4840         calib->ofdm_mrc_x4 = sc->limits->min_ofdm_mrc_x4;
 4841         calib->cck_x4      = 125;
 4842         calib->cck_mrc_x4  = sc->limits->min_cck_mrc_x4;
 4843         calib->energy_cck  = sc->limits->energy_cck;
 4844 
 4845         /* Write initial sensitivity. */
 4846         if ((error = iwn_send_sensitivity(sc)) != 0)
 4847                 return error;
 4848 
 4849         /* Write initial gains. */
 4850         if ((error = ops->init_gains(sc)) != 0)
 4851                 return error;
 4852 
 4853         /* Request statistics at each beacon interval. */
 4854         flags = 0;
 4855         DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s: sending request for statistics\n",
 4856             __func__);
 4857         return iwn_cmd(sc, IWN_CMD_GET_STATISTICS, &flags, sizeof flags, 1);
 4858 }
 4859 
 4860 /*
 4861  * Collect noise and RSSI statistics for the first 20 beacons received
 4862  * after association and use them to determine connected antennas and
 4863  * to set differential gains.
 4864  */
 4865 static void
 4866 iwn_collect_noise(struct iwn_softc *sc,
 4867     const struct iwn_rx_general_stats *stats)
 4868 {
 4869         struct iwn_ops *ops = &sc->ops;
 4870         struct iwn_calib_state *calib = &sc->calib;
 4871         struct ifnet *ifp = sc->sc_ifp;
 4872         struct ieee80211com *ic = ifp->if_l2com;
 4873         uint32_t val;
 4874         int i;
 4875 
 4876         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
 4877 
 4878         /* Accumulate RSSI and noise for all 3 antennas. */
 4879         for (i = 0; i < 3; i++) {
 4880                 calib->rssi[i] += le32toh(stats->rssi[i]) & 0xff;
 4881                 calib->noise[i] += le32toh(stats->noise[i]) & 0xff;
 4882         }
 4883         /* NB: We update differential gains only once after 20 beacons. */
 4884         if (++calib->nbeacons < 20)
 4885                 return;
 4886 
 4887         /* Determine highest average RSSI. */
 4888         val = MAX(calib->rssi[0], calib->rssi[1]);
 4889         val = MAX(calib->rssi[2], val);
 4890 
 4891         /* Determine which antennas are connected. */
 4892         sc->chainmask = sc->rxchainmask;
 4893         for (i = 0; i < 3; i++)
 4894                 if (val - calib->rssi[i] > 15 * 20)
 4895                         sc->chainmask &= ~(1 << i);
 4896         DPRINTF(sc, IWN_DEBUG_CALIBRATE,
 4897             "%s: RX chains mask: theoretical=0x%x, actual=0x%x\n",
 4898             __func__, sc->rxchainmask, sc->chainmask);
 4899 
 4900         /* If none of the TX antennas are connected, keep at least one. */
 4901         if ((sc->chainmask & sc->txchainmask) == 0)
 4902                 sc->chainmask |= IWN_LSB(sc->txchainmask);
 4903 
 4904         (void)ops->set_gains(sc);
 4905         calib->state = IWN_CALIB_STATE_RUN;
 4906 
 4907 #ifdef notyet
 4908         /* XXX Disable RX chains with no antennas connected. */
 4909         sc->rxon->rxchain = htole16(IWN_RXCHAIN_SEL(sc->chainmask));
 4910         (void)iwn_cmd(sc, IWN_CMD_RXON, sc->rxon, sc->rxonsz, 1);
 4911 #endif
 4912 
 4913         /* Enable power-saving mode if requested by user. */
 4914         if (ic->ic_flags & IEEE80211_F_PMGTON)
 4915                 (void)iwn_set_pslevel(sc, 0, 3, 1);
 4916 
 4917         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__);
 4918 
 4919 }
 4920 
 4921 static int
 4922 iwn4965_init_gains(struct iwn_softc *sc)
 4923 {
 4924         struct iwn_phy_calib_gain cmd;
 4925 
 4926         DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
 4927 
 4928         memset(&cmd, 0, sizeof cmd);
 4929         cmd.code = IWN4965_PHY_CALIB_DIFF_GAIN;
 4930         /* Differential gains initially set to 0 for all 3 antennas. */
 4931         DPRINTF(sc, IWN_DEBUG_CALIBRATE,
 4932             "%s: setting initial differential gains\n", __func__);
 4933         return iwn_cmd(sc, IWN_CMD_PHY_CALIB, &cmd, sizeof cmd, 1);
 4934 }
 4935 
 4936 static int
 4937 iwn5000_init_gains(struct iwn_softc *sc)
 4938 {
 4939         struct iwn_phy_calib cmd;
 4940 
 4941         DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
 4942 
 4943         memset(&cmd, 0, sizeof cmd);
 4944         cmd.code = sc->reset_noise_gain;
 4945         cmd.ngroups = 1;
 4946         cmd.isvalid = 1;
 4947         DPRINTF(sc, IWN_DEBUG_CALIBRATE,
 4948             "%s: setting initial differential gains\n", __func__);
 4949         return iwn_cmd(sc, IWN_CMD_PHY_CALIB, &cmd, sizeof cmd, 1);
 4950 }
 4951 
 4952 static int
 4953 iwn4965_set_gains(struct iwn_softc *sc)
 4954 {
 4955         struct iwn_calib_state *calib = &sc->calib;
 4956         struct iwn_phy_calib_gain cmd;
 4957         int i, delta, noise;
 4958 
 4959         DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
 4960 
 4961         /* Get minimal noise among connected antennas. */
 4962         noise = INT_MAX;        /* NB: There's at least one antenna. */
 4963         for (i = 0; i < 3; i++)
 4964                 if (sc->chainmask & (1 << i))
 4965                         noise = MIN(calib->noise[i], noise);
 4966 
 4967         memset(&cmd, 0, sizeof cmd);
 4968         cmd.code = IWN4965_PHY_CALIB_DIFF_GAIN;
 4969         /* Set differential gains for connected antennas. */
 4970         for (i = 0; i < 3; i++) {
 4971                 if (sc->chainmask & (1 << i)) {
 4972                         /* Compute attenuation (in unit of 1.5dB). */
 4973                         delta = (noise - (int32_t)calib->noise[i]) / 30;
 4974                         /* NB: delta <= 0 */
 4975                         /* Limit to [-4.5dB,0]. */
 4976                         cmd.gain[i] = MIN(abs(delta), 3);
 4977                         if (delta < 0)
 4978                                 cmd.gain[i] |= 1 << 2;  /* sign bit */
 4979                 }
 4980         }
 4981         DPRINTF(sc, IWN_DEBUG_CALIBRATE,
 4982             "setting differential gains Ant A/B/C: %x/%x/%x (%x)\n",
 4983             cmd.gain[0], cmd.gain[1], cmd.gain[2], sc->chainmask);
 4984         return iwn_cmd(sc, IWN_CMD_PHY_CALIB, &cmd, sizeof cmd, 1);
 4985 }
 4986 
 4987 static int
 4988 iwn5000_set_gains(struct iwn_softc *sc)
 4989 {
 4990         struct iwn_calib_state *calib = &sc->calib;
 4991         struct iwn_phy_calib_gain cmd;
 4992         int i, ant, div, delta;
 4993 
 4994         DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
 4995 
 4996         /* We collected 20 beacons and !=6050 need a 1.5 factor. */
 4997         div = (sc->hw_type == IWN_HW_REV_TYPE_6050) ? 20 : 30;
 4998 
 4999         memset(&cmd, 0, sizeof cmd);
 5000         cmd.code = sc->noise_gain;
 5001         cmd.ngroups = 1;
 5002         cmd.isvalid = 1;
 5003         /* Get first available RX antenna as referential. */
 5004         ant = IWN_LSB(sc->rxchainmask);
 5005         /* Set differential gains for other antennas. */
 5006         for (i = ant + 1; i < 3; i++) {
 5007                 if (sc->chainmask & (1 << i)) {
 5008                         /* The delta is relative to antenna "ant". */
 5009                         delta = ((int32_t)calib->noise[ant] -
 5010                             (int32_t)calib->noise[i]) / div;
 5011                         /* Limit to [-4.5dB,+4.5dB]. */
 5012                         cmd.gain[i - 1] = MIN(abs(delta), 3);
 5013                         if (delta < 0)
 5014                                 cmd.gain[i - 1] |= 1 << 2;      /* sign bit */
 5015                 }
 5016         }
 5017         DPRINTF(sc, IWN_DEBUG_CALIBRATE,
 5018             "setting differential gains Ant B/C: %x/%x (%x)\n",
 5019             cmd.gain[0], cmd.gain[1], sc->chainmask);
 5020         return iwn_cmd(sc, IWN_CMD_PHY_CALIB, &cmd, sizeof cmd, 1);
 5021 }
 5022 
 5023 /*
 5024  * Tune RF RX sensitivity based on the number of false alarms detected
 5025  * during the last beacon period.
 5026  */
 5027 static void
 5028 iwn_tune_sensitivity(struct iwn_softc *sc, const struct iwn_rx_stats *stats)
 5029 {
 5030 #define inc(val, inc, max)                      \
 5031         if ((val) < (max)) {                    \
 5032                 if ((val) < (max) - (inc))      \
 5033                         (val) += (inc);         \
 5034                 else                            \
 5035                         (val) = (max);          \
 5036                 needs_update = 1;               \
 5037         }
 5038 #define dec(val, dec, min)                      \
 5039         if ((val) > (min)) {                    \
 5040                 if ((val) > (min) + (dec))      \
 5041                         (val) -= (dec);         \
 5042                 else                            \
 5043                         (val) = (min);          \
 5044                 needs_update = 1;               \
 5045         }
 5046 
 5047         const struct iwn_sensitivity_limits *limits = sc->limits;
 5048         struct iwn_calib_state *calib = &sc->calib;
 5049         uint32_t val, rxena, fa;
 5050         uint32_t energy[3], energy_min;
 5051         uint8_t noise[3], noise_ref;
 5052         int i, needs_update = 0;
 5053 
 5054         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
 5055 
 5056         /* Check that we've been enabled long enough. */
 5057         if ((rxena = le32toh(stats->general.load)) == 0){
 5058                 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end not so long\n", __func__);
 5059                 return;
 5060         }
 5061 
 5062         /* Compute number of false alarms since last call for OFDM. */
 5063         fa  = le32toh(stats->ofdm.bad_plcp) - calib->bad_plcp_ofdm;
 5064         fa += le32toh(stats->ofdm.fa) - calib->fa_ofdm;
 5065         fa *= 200 * IEEE80211_DUR_TU;   /* 200TU */
 5066 
 5067         /* Save counters values for next call. */
 5068         calib->bad_plcp_ofdm = le32toh(stats->ofdm.bad_plcp);
 5069         calib->fa_ofdm = le32toh(stats->ofdm.fa);
 5070 
 5071         if (fa > 50 * rxena) {
 5072                 /* High false alarm count, decrease sensitivity. */
 5073                 DPRINTF(sc, IWN_DEBUG_CALIBRATE,
 5074                     "%s: OFDM high false alarm count: %u\n", __func__, fa);
 5075                 inc(calib->ofdm_x1,     1, limits->max_ofdm_x1);
 5076                 inc(calib->ofdm_mrc_x1, 1, limits->max_ofdm_mrc_x1);
 5077                 inc(calib->ofdm_x4,     1, limits->max_ofdm_x4);
 5078                 inc(calib->ofdm_mrc_x4, 1, limits->max_ofdm_mrc_x4);
 5079 
 5080         } else if (fa < 5 * rxena) {
 5081                 /* Low false alarm count, increase sensitivity. */
 5082                 DPRINTF(sc, IWN_DEBUG_CALIBRATE,
 5083                     "%s: OFDM low false alarm count: %u\n", __func__, fa);
 5084                 dec(calib->ofdm_x1,     1, limits->min_ofdm_x1);
 5085                 dec(calib->ofdm_mrc_x1, 1, limits->min_ofdm_mrc_x1);
 5086                 dec(calib->ofdm_x4,     1, limits->min_ofdm_x4);
 5087                 dec(calib->ofdm_mrc_x4, 1, limits->min_ofdm_mrc_x4);
 5088         }
 5089 
 5090         /* Compute maximum noise among 3 receivers. */
 5091         for (i = 0; i < 3; i++)
 5092                 noise[i] = (le32toh(stats->general.noise[i]) >> 8) & 0xff;
 5093         val = MAX(noise[0], noise[1]);
 5094         val = MAX(noise[2], val);
 5095         /* Insert it into our samples table. */
 5096         calib->noise_samples[calib->cur_noise_sample] = val;
 5097         calib->cur_noise_sample = (calib->cur_noise_sample + 1) % 20;
 5098 
 5099         /* Compute maximum noise among last 20 samples. */
 5100         noise_ref = calib->noise_samples[0];
 5101         for (i = 1; i < 20; i++)
 5102                 noise_ref = MAX(noise_ref, calib->noise_samples[i]);
 5103 
 5104         /* Compute maximum energy among 3 receivers. */
 5105         for (i = 0; i < 3; i++)
 5106                 energy[i] = le32toh(stats->general.energy[i]);
 5107         val = MIN(energy[0], energy[1]);
 5108         val = MIN(energy[2], val);
 5109         /* Insert it into our samples table. */
 5110         calib->energy_samples[calib->cur_energy_sample] = val;
 5111         calib->cur_energy_sample = (calib->cur_energy_sample + 1) % 10;
 5112 
 5113         /* Compute minimum energy among last 10 samples. */
 5114         energy_min = calib->energy_samples[0];
 5115         for (i = 1; i < 10; i++)
 5116                 energy_min = MAX(energy_min, calib->energy_samples[i]);
 5117         energy_min += 6;
 5118 
 5119         /* Compute number of false alarms since last call for CCK. */
 5120         fa  = le32toh(stats->cck.bad_plcp) - calib->bad_plcp_cck;
 5121         fa += le32toh(stats->cck.fa) - calib->fa_cck;
 5122         fa *= 200 * IEEE80211_DUR_TU;   /* 200TU */
 5123 
 5124         /* Save counters values for next call. */
 5125         calib->bad_plcp_cck = le32toh(stats->cck.bad_plcp);
 5126         calib->fa_cck = le32toh(stats->cck.fa);
 5127 
 5128         if (fa > 50 * rxena) {
 5129                 /* High false alarm count, decrease sensitivity. */
 5130                 DPRINTF(sc, IWN_DEBUG_CALIBRATE,
 5131                     "%s: CCK high false alarm count: %u\n", __func__, fa);
 5132                 calib->cck_state = IWN_CCK_STATE_HIFA;
 5133                 calib->low_fa = 0;
 5134 
 5135                 if (calib->cck_x4 > 160) {
 5136                         calib->noise_ref = noise_ref;
 5137                         if (calib->energy_cck > 2)
 5138                                 dec(calib->energy_cck, 2, energy_min);
 5139                 }
 5140                 if (calib->cck_x4 < 160) {
 5141                         calib->cck_x4 = 161;
 5142                         needs_update = 1;
 5143                 } else
 5144                         inc(calib->cck_x4, 3, limits->max_cck_x4);
 5145 
 5146                 inc(calib->cck_mrc_x4, 3, limits->max_cck_mrc_x4);
 5147 
 5148         } else if (fa < 5 * rxena) {
 5149                 /* Low false alarm count, increase sensitivity. */
 5150                 DPRINTF(sc, IWN_DEBUG_CALIBRATE,
 5151                     "%s: CCK low false alarm count: %u\n", __func__, fa);
 5152                 calib->cck_state = IWN_CCK_STATE_LOFA;
 5153                 calib->low_fa++;
 5154 
 5155                 if (calib->cck_state != IWN_CCK_STATE_INIT &&
 5156                     (((int32_t)calib->noise_ref - (int32_t)noise_ref) > 2 ||
 5157                      calib->low_fa > 100)) {
 5158                         inc(calib->energy_cck, 2, limits->min_energy_cck);
 5159                         dec(calib->cck_x4,     3, limits->min_cck_x4);
 5160                         dec(calib->cck_mrc_x4, 3, limits->min_cck_mrc_x4);
 5161                 }
 5162         } else {
 5163                 /* Not worth to increase or decrease sensitivity. */
 5164                 DPRINTF(sc, IWN_DEBUG_CALIBRATE,
 5165                     "%s: CCK normal false alarm count: %u\n", __func__, fa);
 5166                 calib->low_fa = 0;
 5167                 calib->noise_ref = noise_ref;
 5168 
 5169                 if (calib->cck_state == IWN_CCK_STATE_HIFA) {
 5170                         /* Previous interval had many false alarms. */
 5171                         dec(calib->energy_cck, 8, energy_min);
 5172                 }
 5173                 calib->cck_state = IWN_CCK_STATE_INIT;
 5174         }
 5175 
 5176         if (needs_update)
 5177                 (void)iwn_send_sensitivity(sc);
 5178 
 5179         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__);
 5180 
 5181 #undef dec
 5182 #undef inc
 5183 }
 5184 
 5185 static int
 5186 iwn_send_sensitivity(struct iwn_softc *sc)
 5187 {
 5188         struct iwn_calib_state *calib = &sc->calib;
 5189         struct iwn_enhanced_sensitivity_cmd cmd;
 5190         int len;
 5191 
 5192         memset(&cmd, 0, sizeof cmd);
 5193         len = sizeof (struct iwn_sensitivity_cmd);
 5194         cmd.which = IWN_SENSITIVITY_WORKTBL;
 5195         /* OFDM modulation. */
 5196         cmd.corr_ofdm_x1       = htole16(calib->ofdm_x1);
 5197         cmd.corr_ofdm_mrc_x1   = htole16(calib->ofdm_mrc_x1);
 5198         cmd.corr_ofdm_x4       = htole16(calib->ofdm_x4);
 5199         cmd.corr_ofdm_mrc_x4   = htole16(calib->ofdm_mrc_x4);
 5200         cmd.energy_ofdm        = htole16(sc->limits->energy_ofdm);
 5201         cmd.energy_ofdm_th     = htole16(62);
 5202         /* CCK modulation. */
 5203         cmd.corr_cck_x4        = htole16(calib->cck_x4);
 5204         cmd.corr_cck_mrc_x4    = htole16(calib->cck_mrc_x4);
 5205         cmd.energy_cck         = htole16(calib->energy_cck);
 5206         /* Barker modulation: use default values. */
 5207         cmd.corr_barker        = htole16(190);
 5208         cmd.corr_barker_mrc    = htole16(390);
 5209 
 5210         DPRINTF(sc, IWN_DEBUG_CALIBRATE,
 5211             "%s: set sensitivity %d/%d/%d/%d/%d/%d/%d\n", __func__,
 5212             calib->ofdm_x1, calib->ofdm_mrc_x1, calib->ofdm_x4,
 5213             calib->ofdm_mrc_x4, calib->cck_x4,
 5214             calib->cck_mrc_x4, calib->energy_cck);
 5215 
 5216         if (!(sc->sc_flags & IWN_FLAG_ENH_SENS))
 5217                 goto send;
 5218         /* Enhanced sensitivity settings. */
 5219         len = sizeof (struct iwn_enhanced_sensitivity_cmd);
 5220         cmd.ofdm_det_slope_mrc = htole16(668);
 5221         cmd.ofdm_det_icept_mrc = htole16(4);
 5222         cmd.ofdm_det_slope     = htole16(486);
 5223         cmd.ofdm_det_icept     = htole16(37);
 5224         cmd.cck_det_slope_mrc  = htole16(853);
 5225         cmd.cck_det_icept_mrc  = htole16(4);
 5226         cmd.cck_det_slope      = htole16(476);
 5227         cmd.cck_det_icept      = htole16(99);
 5228 send:
 5229         return iwn_cmd(sc, IWN_CMD_SET_SENSITIVITY, &cmd, len, 1);
 5230 }
 5231 
 5232 /*
 5233  * Set STA mode power saving level (between 0 and 5).
 5234  * Level 0 is CAM (Continuously Aware Mode), 5 is for maximum power saving.
 5235  */
 5236 static int
 5237 iwn_set_pslevel(struct iwn_softc *sc, int dtim, int level, int async)
 5238 {
 5239         struct iwn_pmgt_cmd cmd;
 5240         const struct iwn_pmgt *pmgt;
 5241         uint32_t max, skip_dtim;
 5242         uint32_t reg;
 5243         int i;
 5244 
 5245         DPRINTF(sc, IWN_DEBUG_PWRSAVE,
 5246             "%s: dtim=%d, level=%d, async=%d\n",
 5247             __func__,
 5248             dtim,
 5249             level,
 5250             async);
 5251 
 5252         /* Select which PS parameters to use. */
 5253         if (dtim <= 2)
 5254                 pmgt = &iwn_pmgt[0][level];
 5255         else if (dtim <= 10)
 5256                 pmgt = &iwn_pmgt[1][level];
 5257         else
 5258                 pmgt = &iwn_pmgt[2][level];
 5259 
 5260         memset(&cmd, 0, sizeof cmd);
 5261         if (level != 0) /* not CAM */
 5262                 cmd.flags |= htole16(IWN_PS_ALLOW_SLEEP);
 5263         if (level == 5)
 5264                 cmd.flags |= htole16(IWN_PS_FAST_PD);
 5265         /* Retrieve PCIe Active State Power Management (ASPM). */
 5266         reg = pci_read_config(sc->sc_dev, sc->sc_cap_off + 0x10, 1);
 5267         if (!(reg & 0x1))       /* L0s Entry disabled. */
 5268                 cmd.flags |= htole16(IWN_PS_PCI_PMGT);
 5269         cmd.rxtimeout = htole32(pmgt->rxtimeout * 1024);
 5270         cmd.txtimeout = htole32(pmgt->txtimeout * 1024);
 5271 
 5272         if (dtim == 0) {
 5273                 dtim = 1;
 5274                 skip_dtim = 0;
 5275         } else
 5276                 skip_dtim = pmgt->skip_dtim;
 5277         if (skip_dtim != 0) {
 5278                 cmd.flags |= htole16(IWN_PS_SLEEP_OVER_DTIM);
 5279                 max = pmgt->intval[4];
 5280                 if (max == (uint32_t)-1)
 5281                         max = dtim * (skip_dtim + 1);
 5282                 else if (max > dtim)
 5283                         max = (max / dtim) * dtim;
 5284         } else
 5285                 max = dtim;
 5286         for (i = 0; i < 5; i++)
 5287                 cmd.intval[i] = htole32(MIN(max, pmgt->intval[i]));
 5288 
 5289         DPRINTF(sc, IWN_DEBUG_RESET, "setting power saving level to %d\n",
 5290             level);
 5291         return iwn_cmd(sc, IWN_CMD_SET_POWER_MODE, &cmd, sizeof cmd, async);
 5292 }
 5293 
 5294 static int
 5295 iwn_send_btcoex(struct iwn_softc *sc)
 5296 {
 5297         struct iwn_bluetooth cmd;
 5298 
 5299         memset(&cmd, 0, sizeof cmd);
 5300         cmd.flags = IWN_BT_COEX_CHAN_ANN | IWN_BT_COEX_BT_PRIO;
 5301         cmd.lead_time = IWN_BT_LEAD_TIME_DEF;
 5302         cmd.max_kill = IWN_BT_MAX_KILL_DEF;
 5303         DPRINTF(sc, IWN_DEBUG_RESET, "%s: configuring bluetooth coexistence\n",
 5304             __func__);
 5305         return iwn_cmd(sc, IWN_CMD_BT_COEX, &cmd, sizeof(cmd), 0);
 5306 }
 5307 
 5308 static int
 5309 iwn_send_advanced_btcoex(struct iwn_softc *sc)
 5310 {
 5311         static const uint32_t btcoex_3wire[12] = {
 5312                 0xaaaaaaaa, 0xaaaaaaaa, 0xaeaaaaaa, 0xaaaaaaaa,
 5313                 0xcc00ff28, 0x0000aaaa, 0xcc00aaaa, 0x0000aaaa,
 5314                 0xc0004000, 0x00004000, 0xf0005000, 0xf0005000,
 5315         };
 5316         struct iwn6000_btcoex_config btconfig;
 5317         struct iwn_btcoex_priotable btprio;
 5318         struct iwn_btcoex_prot btprot;
 5319         int error, i;
 5320 
 5321         memset(&btconfig, 0, sizeof btconfig);
 5322         btconfig.flags = 145;
 5323         btconfig.max_kill = 5;
 5324         btconfig.bt3_t7_timer = 1;
 5325         btconfig.kill_ack = htole32(0xffff0000);
 5326         btconfig.kill_cts = htole32(0xffff0000);
 5327         btconfig.sample_time = 2;
 5328         btconfig.bt3_t2_timer = 0xc;
 5329         for (i = 0; i < 12; i++)
 5330                 btconfig.lookup_table[i] = htole32(btcoex_3wire[i]);
 5331         btconfig.valid = htole16(0xff);
 5332         btconfig.prio_boost = 0xf0;
 5333         DPRINTF(sc, IWN_DEBUG_RESET,
 5334             "%s: configuring advanced bluetooth coexistence\n", __func__);
 5335         error = iwn_cmd(sc, IWN_CMD_BT_COEX, &btconfig, sizeof(btconfig), 1);
 5336         if (error != 0)
 5337                 return error;
 5338 
 5339         memset(&btprio, 0, sizeof btprio);
 5340         btprio.calib_init1 = 0x6;
 5341         btprio.calib_init2 = 0x7;
 5342         btprio.calib_periodic_low1 = 0x2;
 5343         btprio.calib_periodic_low2 = 0x3;
 5344         btprio.calib_periodic_high1 = 0x4;
 5345         btprio.calib_periodic_high2 = 0x5;
 5346         btprio.dtim = 0x6;
 5347         btprio.scan52 = 0x8;
 5348         btprio.scan24 = 0xa;
 5349         error = iwn_cmd(sc, IWN_CMD_BT_COEX_PRIOTABLE, &btprio, sizeof(btprio),
 5350             1);
 5351         if (error != 0)
 5352                 return error;
 5353 
 5354         /* Force BT state machine change. */
 5355         memset(&btprot, 0, sizeof btprot);
 5356         btprot.open = 1;
 5357         btprot.type = 1;
 5358         error = iwn_cmd(sc, IWN_CMD_BT_COEX_PROT, &btprot, sizeof(btprot), 1);
 5359         if (error != 0)
 5360                 return error;
 5361         btprot.open = 0;
 5362         return iwn_cmd(sc, IWN_CMD_BT_COEX_PROT, &btprot, sizeof(btprot), 1);
 5363 }
 5364 
 5365 static int
 5366 iwn5000_runtime_calib(struct iwn_softc *sc)
 5367 {
 5368         struct iwn5000_calib_config cmd;
 5369 
 5370         memset(&cmd, 0, sizeof cmd);
 5371         cmd.ucode.once.enable = 0xffffffff;
 5372         cmd.ucode.once.start = IWN5000_CALIB_DC;
 5373         DPRINTF(sc, IWN_DEBUG_CALIBRATE,
 5374             "%s: configuring runtime calibration\n", __func__);
 5375         return iwn_cmd(sc, IWN5000_CMD_CALIB_CONFIG, &cmd, sizeof(cmd), 0);
 5376 }
 5377 
 5378 static int
 5379 iwn_config(struct iwn_softc *sc)
 5380 {
 5381         struct iwn_ops *ops = &sc->ops;
 5382         struct ifnet *ifp = sc->sc_ifp;
 5383         struct ieee80211com *ic = ifp->if_l2com;
 5384         uint32_t txmask;
 5385         uint16_t rxchain;
 5386         int error;
 5387 
 5388         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
 5389 
 5390         if (sc->hw_type == IWN_HW_REV_TYPE_6005) {
 5391                 /* Set radio temperature sensor offset. */
 5392                 error = iwn5000_temp_offset_calib(sc);
 5393                 if (error != 0) {
 5394                         device_printf(sc->sc_dev,
 5395                             "%s: could not set temperature offset\n", __func__);
 5396                         return error;
 5397                 }
 5398         }
 5399 
 5400         if (sc->hw_type == IWN_HW_REV_TYPE_6050) {
 5401                 /* Configure runtime DC calibration. */
 5402                 error = iwn5000_runtime_calib(sc);
 5403                 if (error != 0) {
 5404                         device_printf(sc->sc_dev,
 5405                             "%s: could not configure runtime calibration\n",
 5406                             __func__);
 5407                         return error;
 5408                 }
 5409         }
 5410 
 5411         /* Configure valid TX chains for >=5000 Series. */
 5412         if (sc->hw_type != IWN_HW_REV_TYPE_4965) {
 5413                 txmask = htole32(sc->txchainmask);
 5414                 DPRINTF(sc, IWN_DEBUG_RESET,
 5415                     "%s: configuring valid TX chains 0x%x\n", __func__, txmask);
 5416                 error = iwn_cmd(sc, IWN5000_CMD_TX_ANT_CONFIG, &txmask,
 5417                     sizeof txmask, 0);
 5418                 if (error != 0) {
 5419                         device_printf(sc->sc_dev,
 5420                             "%s: could not configure valid TX chains, "
 5421                             "error %d\n", __func__, error);
 5422                         return error;
 5423                 }
 5424         }
 5425 
 5426         /* Configure bluetooth coexistence. */
 5427         if (sc->sc_flags & IWN_FLAG_ADV_BTCOEX)
 5428                 error = iwn_send_advanced_btcoex(sc);
 5429         else
 5430                 error = iwn_send_btcoex(sc);
 5431         if (error != 0) {
 5432                 device_printf(sc->sc_dev,
 5433                     "%s: could not configure bluetooth coexistence, error %d\n",
 5434                     __func__, error);
 5435                 return error;
 5436         }
 5437 
 5438         /* Set mode, channel, RX filter and enable RX. */
 5439         sc->rxon = &sc->rx_on[IWN_RXON_BSS_CTX];
 5440         memset(sc->rxon, 0, sizeof (struct iwn_rxon));
 5441         IEEE80211_ADDR_COPY(sc->rxon->myaddr, IF_LLADDR(ifp));
 5442         IEEE80211_ADDR_COPY(sc->rxon->wlap, IF_LLADDR(ifp));
 5443         sc->rxon->chan = ieee80211_chan2ieee(ic, ic->ic_curchan);
 5444         sc->rxon->flags = htole32(IWN_RXON_TSF | IWN_RXON_CTS_TO_SELF);
 5445         if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan))
 5446                 sc->rxon->flags |= htole32(IWN_RXON_AUTO | IWN_RXON_24GHZ);
 5447         switch (ic->ic_opmode) {
 5448         case IEEE80211_M_STA:
 5449                 sc->rxon->mode = IWN_MODE_STA;
 5450                 sc->rxon->filter = htole32(IWN_FILTER_MULTICAST);
 5451                 break;
 5452         case IEEE80211_M_MONITOR:
 5453                 sc->rxon->mode = IWN_MODE_MONITOR;
 5454                 sc->rxon->filter = htole32(IWN_FILTER_MULTICAST |
 5455                     IWN_FILTER_CTL | IWN_FILTER_PROMISC);
 5456                 break;
 5457         default:
 5458                 /* Should not get there. */
 5459                 break;
 5460         }
 5461         sc->rxon->cck_mask  = 0x0f;     /* not yet negotiated */
 5462         sc->rxon->ofdm_mask = 0xff;     /* not yet negotiated */
 5463         sc->rxon->ht_single_mask = 0xff;
 5464         sc->rxon->ht_dual_mask = 0xff;
 5465         sc->rxon->ht_triple_mask = 0xff;
 5466         rxchain =
 5467             IWN_RXCHAIN_VALID(sc->rxchainmask) |
 5468             IWN_RXCHAIN_MIMO_COUNT(2) |
 5469             IWN_RXCHAIN_IDLE_COUNT(2);
 5470         sc->rxon->rxchain = htole16(rxchain);
 5471         DPRINTF(sc, IWN_DEBUG_RESET, "%s: setting configuration\n", __func__);
 5472         error = iwn_cmd(sc, IWN_CMD_RXON, sc->rxon, sc->rxonsz, 0);
 5473         if (error != 0) {
 5474                 device_printf(sc->sc_dev, "%s: RXON command failed\n",
 5475                     __func__);
 5476                 return error;
 5477         }
 5478 
 5479         if ((error = iwn_add_broadcast_node(sc, 0)) != 0) {
 5480                 device_printf(sc->sc_dev, "%s: could not add broadcast node\n",
 5481                     __func__);
 5482                 return error;
 5483         }
 5484 
 5485         /* Configuration has changed, set TX power accordingly. */
 5486         if ((error = ops->set_txpower(sc, ic->ic_curchan, 0)) != 0) {
 5487                 device_printf(sc->sc_dev, "%s: could not set TX power\n",
 5488                     __func__);
 5489                 return error;
 5490         }
 5491 
 5492         if ((error = iwn_set_critical_temp(sc)) != 0) {
 5493                 device_printf(sc->sc_dev,
 5494                     "%s: could not set critical temperature\n", __func__);
 5495                 return error;
 5496         }
 5497 
 5498         /* Set power saving level to CAM during initialization. */
 5499         if ((error = iwn_set_pslevel(sc, 0, 0, 0)) != 0) {
 5500                 device_printf(sc->sc_dev,
 5501                     "%s: could not set power saving level\n", __func__);
 5502                 return error;
 5503         }
 5504 
 5505         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__);
 5506 
 5507         return 0;
 5508 }
 5509 
 5510 /*
 5511  * Add an ssid element to a frame.
 5512  */
 5513 static uint8_t *
 5514 ieee80211_add_ssid(uint8_t *frm, const uint8_t *ssid, u_int len)
 5515 {
 5516         *frm++ = IEEE80211_ELEMID_SSID;
 5517         *frm++ = len;
 5518         memcpy(frm, ssid, len);
 5519         return frm + len;
 5520 }
 5521 
 5522 static int
 5523 iwn_scan(struct iwn_softc *sc)
 5524 {
 5525         struct ifnet *ifp = sc->sc_ifp;
 5526         struct ieee80211com *ic = ifp->if_l2com;
 5527         struct ieee80211_scan_state *ss = ic->ic_scan;  /*XXX*/
 5528         struct ieee80211_node *ni = ss->ss_vap->iv_bss;
 5529         struct iwn_scan_hdr *hdr;
 5530         struct iwn_cmd_data *tx;
 5531         struct iwn_scan_essid *essid;
 5532         struct iwn_scan_chan *chan;
 5533         struct ieee80211_frame *wh;
 5534         struct ieee80211_rateset *rs;
 5535         struct ieee80211_channel *c;
 5536         uint8_t *buf, *frm;
 5537         uint16_t rxchain;
 5538         uint8_t txant;
 5539         int buflen, error;
 5540 
 5541         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
 5542 
 5543         sc->rxon = &sc->rx_on[IWN_RXON_BSS_CTX];
 5544         buf = malloc(IWN_SCAN_MAXSZ, M_DEVBUF, M_NOWAIT | M_ZERO);
 5545         if (buf == NULL) {
 5546                 device_printf(sc->sc_dev,
 5547                     "%s: could not allocate buffer for scan command\n",
 5548                     __func__);
 5549                 return ENOMEM;
 5550         }
 5551         hdr = (struct iwn_scan_hdr *)buf;
 5552         /*
 5553          * Move to the next channel if no frames are received within 10ms
 5554          * after sending the probe request.
 5555          */
 5556         hdr->quiet_time = htole16(10);          /* timeout in milliseconds */
 5557         hdr->quiet_threshold = htole16(1);      /* min # of packets */
 5558 
 5559         /* Select antennas for scanning. */
 5560         rxchain =
 5561             IWN_RXCHAIN_VALID(sc->rxchainmask) |
 5562             IWN_RXCHAIN_FORCE_MIMO_SEL(sc->rxchainmask) |
 5563             IWN_RXCHAIN_DRIVER_FORCE;
 5564         if (IEEE80211_IS_CHAN_A(ic->ic_curchan) &&
 5565             sc->hw_type == IWN_HW_REV_TYPE_4965) {
 5566                 /* Ant A must be avoided in 5GHz because of an HW bug. */
 5567                 rxchain |= IWN_RXCHAIN_FORCE_SEL(IWN_ANT_B);
 5568         } else  /* Use all available RX antennas. */
 5569                 rxchain |= IWN_RXCHAIN_FORCE_SEL(sc->rxchainmask);
 5570         hdr->rxchain = htole16(rxchain);
 5571         hdr->filter = htole32(IWN_FILTER_MULTICAST | IWN_FILTER_BEACON);
 5572 
 5573         tx = (struct iwn_cmd_data *)(hdr + 1);
 5574         tx->flags = htole32(IWN_TX_AUTO_SEQ);
 5575         tx->id = sc->broadcast_id;
 5576         tx->lifetime = htole32(IWN_LIFETIME_INFINITE);
 5577 
 5578         if (IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) {
 5579                 /* Send probe requests at 6Mbps. */
 5580                 tx->rate = htole32(0xd);
 5581                 rs = &ic->ic_sup_rates[IEEE80211_MODE_11A];
 5582         } else {
 5583                 hdr->flags = htole32(IWN_RXON_24GHZ | IWN_RXON_AUTO);
 5584                 if (sc->hw_type == IWN_HW_REV_TYPE_4965 &&
 5585                     sc->rxon->associd && sc->rxon->chan > 14)
 5586                         tx->rate = htole32(0xd);
 5587                 else {
 5588                         /* Send probe requests at 1Mbps. */
 5589                         tx->rate = htole32(10 | IWN_RFLAG_CCK);
 5590                 }
 5591                 rs = &ic->ic_sup_rates[IEEE80211_MODE_11G];
 5592         }
 5593         /* Use the first valid TX antenna. */
 5594         txant = IWN_LSB(sc->txchainmask);
 5595         tx->rate |= htole32(IWN_RFLAG_ANT(txant));
 5596 
 5597         essid = (struct iwn_scan_essid *)(tx + 1);
 5598         if (ss->ss_ssid[0].len != 0) {
 5599                 essid[0].id = IEEE80211_ELEMID_SSID;
 5600                 essid[0].len = ss->ss_ssid[0].len;
 5601                 memcpy(essid[0].data, ss->ss_ssid[0].ssid, ss->ss_ssid[0].len);
 5602         }
 5603         /*
 5604          * Build a probe request frame.  Most of the following code is a
 5605          * copy & paste of what is done in net80211.
 5606          */
 5607         wh = (struct ieee80211_frame *)(essid + 20);
 5608         wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT |
 5609             IEEE80211_FC0_SUBTYPE_PROBE_REQ;
 5610         wh->i_fc[1] = IEEE80211_FC1_DIR_NODS;
 5611         IEEE80211_ADDR_COPY(wh->i_addr1, ifp->if_broadcastaddr);
 5612         IEEE80211_ADDR_COPY(wh->i_addr2, IF_LLADDR(ifp));
 5613         IEEE80211_ADDR_COPY(wh->i_addr3, ifp->if_broadcastaddr);
 5614         *(uint16_t *)&wh->i_dur[0] = 0; /* filled by HW */
 5615         *(uint16_t *)&wh->i_seq[0] = 0; /* filled by HW */
 5616 
 5617         frm = (uint8_t *)(wh + 1);
 5618         frm = ieee80211_add_ssid(frm, NULL, 0);
 5619         frm = ieee80211_add_rates(frm, rs);
 5620         if (rs->rs_nrates > IEEE80211_RATE_SIZE)
 5621                 frm = ieee80211_add_xrates(frm, rs);
 5622         if (ic->ic_htcaps & IEEE80211_HTC_HT)
 5623                 frm = ieee80211_add_htcap(frm, ni);
 5624 
 5625         /* Set length of probe request. */
 5626         tx->len = htole16(frm - (uint8_t *)wh);
 5627 
 5628         c = ic->ic_curchan;
 5629         chan = (struct iwn_scan_chan *)frm;
 5630         chan->chan = htole16(ieee80211_chan2ieee(ic, c));
 5631         chan->flags = 0;
 5632         if (ss->ss_nssid > 0)
 5633                 chan->flags |= htole32(IWN_CHAN_NPBREQS(1));
 5634         chan->dsp_gain = 0x6e;
 5635         if (IEEE80211_IS_CHAN_5GHZ(c) &&
 5636             !(c->ic_flags & IEEE80211_CHAN_PASSIVE)) {
 5637                 chan->rf_gain = 0x3b;
 5638                 chan->active  = htole16(24);
 5639                 chan->passive = htole16(110);
 5640                 chan->flags |= htole32(IWN_CHAN_ACTIVE);
 5641         } else if (IEEE80211_IS_CHAN_5GHZ(c)) {
 5642                 chan->rf_gain = 0x3b;
 5643                 chan->active  = htole16(24);
 5644                 if (sc->rxon->associd)
 5645                         chan->passive = htole16(78);
 5646                 else
 5647                         chan->passive = htole16(110);
 5648                 hdr->crc_threshold = 0xffff;
 5649         } else if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) {
 5650                 chan->rf_gain = 0x28;
 5651                 chan->active  = htole16(36);
 5652                 chan->passive = htole16(120);
 5653                 chan->flags |= htole32(IWN_CHAN_ACTIVE);
 5654         } else {
 5655                 chan->rf_gain = 0x28;
 5656                 chan->active  = htole16(36);
 5657                 if (sc->rxon->associd)
 5658                         chan->passive = htole16(88);
 5659                 else
 5660                         chan->passive = htole16(120);
 5661                 hdr->crc_threshold = 0xffff;
 5662         }
 5663 
 5664         DPRINTF(sc, IWN_DEBUG_STATE,
 5665             "%s: chan %u flags 0x%x rf_gain 0x%x "
 5666             "dsp_gain 0x%x active 0x%x passive 0x%x\n", __func__,
 5667             chan->chan, chan->flags, chan->rf_gain, chan->dsp_gain,
 5668             chan->active, chan->passive);
 5669 
 5670         hdr->nchan++;
 5671         chan++;
 5672         buflen = (uint8_t *)chan - buf;
 5673         hdr->len = htole16(buflen);
 5674 
 5675         DPRINTF(sc, IWN_DEBUG_STATE, "sending scan command nchan=%d\n",
 5676             hdr->nchan);
 5677         error = iwn_cmd(sc, IWN_CMD_SCAN, buf, buflen, 1);
 5678         free(buf, M_DEVBUF);
 5679 
 5680         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__);
 5681 
 5682         return error;
 5683 }
 5684 
 5685 static int
 5686 iwn_auth(struct iwn_softc *sc, struct ieee80211vap *vap)
 5687 {
 5688         struct iwn_ops *ops = &sc->ops;
 5689         struct ifnet *ifp = sc->sc_ifp;
 5690         struct ieee80211com *ic = ifp->if_l2com;
 5691         struct ieee80211_node *ni = vap->iv_bss;
 5692         int error;
 5693 
 5694         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
 5695 
 5696         sc->rxon = &sc->rx_on[IWN_RXON_BSS_CTX];
 5697         /* Update adapter configuration. */
 5698         IEEE80211_ADDR_COPY(sc->rxon->bssid, ni->ni_bssid);
 5699         sc->rxon->chan = ieee80211_chan2ieee(ic, ni->ni_chan);
 5700         sc->rxon->flags = htole32(IWN_RXON_TSF | IWN_RXON_CTS_TO_SELF);
 5701         if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan))
 5702                 sc->rxon->flags |= htole32(IWN_RXON_AUTO | IWN_RXON_24GHZ);
 5703         if (ic->ic_flags & IEEE80211_F_SHSLOT)
 5704                 sc->rxon->flags |= htole32(IWN_RXON_SHSLOT);
 5705         if (ic->ic_flags & IEEE80211_F_SHPREAMBLE)
 5706                 sc->rxon->flags |= htole32(IWN_RXON_SHPREAMBLE);
 5707         if (IEEE80211_IS_CHAN_A(ni->ni_chan)) {
 5708                 sc->rxon->cck_mask  = 0;
 5709                 sc->rxon->ofdm_mask = 0x15;
 5710         } else if (IEEE80211_IS_CHAN_B(ni->ni_chan)) {
 5711                 sc->rxon->cck_mask  = 0x03;
 5712                 sc->rxon->ofdm_mask = 0;
 5713         } else {
 5714                 /* Assume 802.11b/g. */
 5715                 sc->rxon->cck_mask  = 0x0f;
 5716                 sc->rxon->ofdm_mask = 0x15;
 5717         }
 5718         DPRINTF(sc, IWN_DEBUG_STATE, "rxon chan %d flags %x cck %x ofdm %x\n",
 5719             sc->rxon->chan, sc->rxon->flags, sc->rxon->cck_mask,
 5720             sc->rxon->ofdm_mask);
 5721         error = iwn_cmd(sc, IWN_CMD_RXON, sc->rxon, sc->rxonsz, 1);
 5722         if (error != 0) {
 5723                 device_printf(sc->sc_dev, "%s: RXON command failed, error %d\n",
 5724                     __func__, error);
 5725                 return error;
 5726         }
 5727 
 5728         /* Configuration has changed, set TX power accordingly. */
 5729         if ((error = ops->set_txpower(sc, ni->ni_chan, 1)) != 0) {
 5730                 device_printf(sc->sc_dev,
 5731                     "%s: could not set TX power, error %d\n", __func__, error);
 5732                 return error;
 5733         }
 5734         /*
 5735          * Reconfiguring RXON clears the firmware nodes table so we must
 5736          * add the broadcast node again.
 5737          */
 5738         if ((error = iwn_add_broadcast_node(sc, 1)) != 0) {
 5739                 device_printf(sc->sc_dev,
 5740                     "%s: could not add broadcast node, error %d\n", __func__,
 5741                     error);
 5742                 return error;
 5743         }
 5744 
 5745         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__);
 5746 
 5747         return 0;
 5748 }
 5749 
 5750 static int
 5751 iwn_run(struct iwn_softc *sc, struct ieee80211vap *vap)
 5752 {
 5753         struct iwn_ops *ops = &sc->ops;
 5754         struct ifnet *ifp = sc->sc_ifp;
 5755         struct ieee80211com *ic = ifp->if_l2com;
 5756         struct ieee80211_node *ni = vap->iv_bss;
 5757         struct iwn_node_info node;
 5758         uint32_t htflags = 0;
 5759         int error;
 5760 
 5761         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
 5762 
 5763         sc->rxon = &sc->rx_on[IWN_RXON_BSS_CTX];
 5764         if (ic->ic_opmode == IEEE80211_M_MONITOR) {
 5765                 /* Link LED blinks while monitoring. */
 5766                 iwn_set_led(sc, IWN_LED_LINK, 5, 5);
 5767                 return 0;
 5768         }
 5769         if ((error = iwn_set_timing(sc, ni)) != 0) {
 5770                 device_printf(sc->sc_dev,
 5771                     "%s: could not set timing, error %d\n", __func__, error);
 5772                 return error;
 5773         }
 5774 
 5775         /* Update adapter configuration. */
 5776         IEEE80211_ADDR_COPY(sc->rxon->bssid, ni->ni_bssid);
 5777         sc->rxon->associd = htole16(IEEE80211_AID(ni->ni_associd));
 5778         sc->rxon->chan = ieee80211_chan2ieee(ic, ni->ni_chan);
 5779         sc->rxon->flags = htole32(IWN_RXON_TSF | IWN_RXON_CTS_TO_SELF);
 5780         if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan))
 5781                 sc->rxon->flags |= htole32(IWN_RXON_AUTO | IWN_RXON_24GHZ);
 5782         if (ic->ic_flags & IEEE80211_F_SHSLOT)
 5783                 sc->rxon->flags |= htole32(IWN_RXON_SHSLOT);
 5784         if (ic->ic_flags & IEEE80211_F_SHPREAMBLE)
 5785                 sc->rxon->flags |= htole32(IWN_RXON_SHPREAMBLE);
 5786         if (IEEE80211_IS_CHAN_A(ni->ni_chan)) {
 5787                 sc->rxon->cck_mask  = 0;
 5788                 sc->rxon->ofdm_mask = 0x15;
 5789         } else if (IEEE80211_IS_CHAN_B(ni->ni_chan)) {
 5790                 sc->rxon->cck_mask  = 0x03;
 5791                 sc->rxon->ofdm_mask = 0;
 5792         } else {
 5793                 /* Assume 802.11b/g. */
 5794                 sc->rxon->cck_mask  = 0x0f;
 5795                 sc->rxon->ofdm_mask = 0x15;
 5796         }
 5797         if (IEEE80211_IS_CHAN_HT(ni->ni_chan)) {
 5798                 htflags |= IWN_RXON_HT_PROTMODE(ic->ic_curhtprotmode);
 5799                 if (IEEE80211_IS_CHAN_HT40(ni->ni_chan)) {
 5800                         switch (ic->ic_curhtprotmode) {
 5801                         case IEEE80211_HTINFO_OPMODE_HT20PR:
 5802                                 htflags |= IWN_RXON_HT_MODEPURE40;
 5803                                 break;
 5804                         default:
 5805                                 htflags |= IWN_RXON_HT_MODEMIXED;
 5806                                 break;
 5807                         }
 5808                 }
 5809                 if (IEEE80211_IS_CHAN_HT40D(ni->ni_chan))
 5810                         htflags |= IWN_RXON_HT_HT40MINUS;
 5811         }
 5812         sc->rxon->flags |= htole32(htflags);
 5813         sc->rxon->filter |= htole32(IWN_FILTER_BSS);
 5814         DPRINTF(sc, IWN_DEBUG_STATE, "rxon chan %d flags %x\n",
 5815             sc->rxon->chan, sc->rxon->flags);
 5816         error = iwn_cmd(sc, IWN_CMD_RXON, sc->rxon, sc->rxonsz, 1);
 5817         if (error != 0) {
 5818                 device_printf(sc->sc_dev,
 5819                     "%s: could not update configuration, error %d\n", __func__,
 5820                     error);
 5821                 return error;
 5822         }
 5823 
 5824         /* Configuration has changed, set TX power accordingly. */
 5825         if ((error = ops->set_txpower(sc, ni->ni_chan, 1)) != 0) {
 5826                 device_printf(sc->sc_dev,
 5827                     "%s: could not set TX power, error %d\n", __func__, error);
 5828                 return error;
 5829         }
 5830 
 5831         /* Fake a join to initialize the TX rate. */
 5832         ((struct iwn_node *)ni)->id = IWN_ID_BSS;
 5833         iwn_newassoc(ni, 1);
 5834 
 5835         /* Add BSS node. */
 5836         memset(&node, 0, sizeof node);
 5837         IEEE80211_ADDR_COPY(node.macaddr, ni->ni_macaddr);
 5838         node.id = IWN_ID_BSS;
 5839         if (IEEE80211_IS_CHAN_HT(ni->ni_chan)) {
 5840                 switch (ni->ni_htcap & IEEE80211_HTCAP_SMPS) {
 5841                 case IEEE80211_HTCAP_SMPS_ENA:
 5842                         node.htflags |= htole32(IWN_SMPS_MIMO_DIS);
 5843                         break;
 5844                 case IEEE80211_HTCAP_SMPS_DYNAMIC:
 5845                         node.htflags |= htole32(IWN_SMPS_MIMO_PROT);
 5846                         break;
 5847                 }
 5848                 node.htflags |= htole32(IWN_AMDPU_SIZE_FACTOR(3) |
 5849                     IWN_AMDPU_DENSITY(5));      /* 4us */
 5850                 if (IEEE80211_IS_CHAN_HT40(ni->ni_chan))
 5851                         node.htflags |= htole32(IWN_NODE_HT40);
 5852         }
 5853         DPRINTF(sc, IWN_DEBUG_STATE, "%s: adding BSS node\n", __func__);
 5854         error = ops->add_node(sc, &node, 1);
 5855         if (error != 0) {
 5856                 device_printf(sc->sc_dev,
 5857                     "%s: could not add BSS node, error %d\n", __func__, error);
 5858                 return error;
 5859         }
 5860         DPRINTF(sc, IWN_DEBUG_STATE, "%s: setting link quality for node %d\n",
 5861             __func__, node.id);
 5862         if ((error = iwn_set_link_quality(sc, ni)) != 0) {
 5863                 device_printf(sc->sc_dev,
 5864                     "%s: could not setup link quality for node %d, error %d\n",
 5865                     __func__, node.id, error);
 5866                 return error;
 5867         }
 5868 
 5869         if ((error = iwn_init_sensitivity(sc)) != 0) {
 5870                 device_printf(sc->sc_dev,
 5871                     "%s: could not set sensitivity, error %d\n", __func__,
 5872                     error);
 5873                 return error;
 5874         }
 5875         /* Start periodic calibration timer. */
 5876         sc->calib.state = IWN_CALIB_STATE_ASSOC;
 5877         sc->calib_cnt = 0;
 5878         callout_reset(&sc->calib_to, msecs_to_ticks(500), iwn_calib_timeout,
 5879             sc);
 5880 
 5881         /* Link LED always on while associated. */
 5882         iwn_set_led(sc, IWN_LED_LINK, 0, 1);
 5883 
 5884         DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__);
 5885 
 5886         return 0;
 5887 }
 5888 
 5889 /*
 5890  * This function is called by upper layer when an ADDBA request is received
 5891  * from another STA and before the ADDBA response is sent.
 5892  */
 5893 static int
 5894 iwn_ampdu_rx_start(struct ieee80211_node *ni, struct ieee80211_rx_ampdu *rap,
 5895     int baparamset, int batimeout, int baseqctl)
 5896 {
 5897 #define MS(_v, _f)      (((_v) & _f) >> _f##_S)
 5898         struct iwn_softc *sc = ni->ni_ic->ic_ifp->if_softc;
 5899         struct iwn_ops *ops = &sc->ops;
 5900         struct iwn_node *wn = (void *)ni;
 5901         struct iwn_node_info node;
 5902         uint16_t ssn;
 5903         uint8_t tid;
 5904         int error;
 5905 
 5906         DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
 5907 
 5908         tid = MS(le16toh(baparamset), IEEE80211_BAPS_TID);
 5909         ssn = MS(le16toh(baseqctl), IEEE80211_BASEQ_START);
 5910