Attachment 175967 Details for Bug 213444 – my if_iwn.c before patching

my if_iwn.c before patching

if_iwn.c (text/plain), 247.50 KB, created by Maxim Usatov on 2016-10-20 08:50:19 UTC

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Creator: Maxim Usatov

Created: 2016-10-20 08:50:19 UTC

Size: 247.50 KB

patch

obsolete

>/*-
> * Copyright (c) 2007-2009 Damien Bergamini <damien.bergamini@free.fr>
> * Copyright (c) 2008 Benjamin Close <benjsc@FreeBSD.org>
> * Copyright (c) 2008 Sam Leffler, Errno Consulting
> * Copyright (c) 2011 Intel Corporation
> * Copyright (c) 2013 Cedric GROSS <c.gross@kreiz-it.fr>
> * Copyright (c) 2013 Adrian Chadd <adrian@FreeBSD.org>
> *
> * Permission to use, copy, modify, and distribute this software for any
> * purpose with or without fee is hereby granted, provided that the above
> * copyright notice and this permission notice appear in all copies.
> *
> * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
> * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
> * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
> * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
> * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
> * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
> * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
> */
>
>/*
> * Driver for Intel WiFi Link 4965 and 1000/5000/6000 Series 802.11 network
> * adapters.
> */
>
>#include <sys/cdefs.h>
>__FBSDID("$FreeBSD: releng/11.0/sys/dev/iwn/if_iwn.c 300732 2016-05-26 11:12:36Z avos $");
>
>#include "opt_wlan.h"
>#include "opt_iwn.h"
>
>#include <sys/param.h>
>#include <sys/sockio.h>
>#include <sys/sysctl.h>
>#include <sys/mbuf.h>
>#include <sys/kernel.h>
>#include <sys/socket.h>
>#include <sys/systm.h>
>#include <sys/malloc.h>
>#include <sys/bus.h>
>#include <sys/conf.h>
>#include <sys/rman.h>
>#include <sys/endian.h>
>#include <sys/firmware.h>
>#include <sys/limits.h>
>#include <sys/module.h>
>#include <sys/priv.h>
>#include <sys/queue.h>
>#include <sys/taskqueue.h>
>
>#include <machine/bus.h>
>#include <machine/resource.h>
>#include <machine/clock.h>
>
>#include <dev/pci/pcireg.h>
>#include <dev/pci/pcivar.h>
>
>#include <net/if.h>
>#include <net/if_var.h>
>#include <net/if_dl.h>
>#include <net/if_media.h>
>
>#include <netinet/in.h>
>#include <netinet/if_ether.h>
>
>#include <net80211/ieee80211_var.h>
>#include <net80211/ieee80211_radiotap.h>
>#include <net80211/ieee80211_regdomain.h>
>#include <net80211/ieee80211_ratectl.h>
>
>#include <dev/iwn/if_iwnreg.h>
>#include <dev/iwn/if_iwnvar.h>
>#include <dev/iwn/if_iwn_devid.h>
>#include <dev/iwn/if_iwn_chip_cfg.h>
>#include <dev/iwn/if_iwn_debug.h>
>#include <dev/iwn/if_iwn_ioctl.h>
>
>struct iwn_ident {
>	uint16_t	vendor;
>	uint16_t	device;
>	const char	*name;
>};
>
>static const struct iwn_ident iwn_ident_table[] = {
>	{ 0x8086, IWN_DID_6x05_1, "Intel Centrino Advanced-N 6205"		},
>	{ 0x8086, IWN_DID_1000_1, "Intel Centrino Wireless-N 1000"		},
>	{ 0x8086, IWN_DID_1000_2, "Intel Centrino Wireless-N 1000"		},
>	{ 0x8086, IWN_DID_6x05_2, "Intel Centrino Advanced-N 6205"		},
>	{ 0x8086, IWN_DID_6050_1, "Intel Centrino Advanced-N + WiMAX 6250"	},
>	{ 0x8086, IWN_DID_6050_2, "Intel Centrino Advanced-N + WiMAX 6250"	},
>	{ 0x8086, IWN_DID_x030_1, "Intel Centrino Wireless-N 1030"		},
>	{ 0x8086, IWN_DID_x030_2, "Intel Centrino Wireless-N 1030"		},
>	{ 0x8086, IWN_DID_x030_3, "Intel Centrino Advanced-N 6230"		},
>	{ 0x8086, IWN_DID_x030_4, "Intel Centrino Advanced-N 6230"		},
>	{ 0x8086, IWN_DID_6150_1, "Intel Centrino Wireless-N + WiMAX 6150"	},
>	{ 0x8086, IWN_DID_6150_2, "Intel Centrino Wireless-N + WiMAX 6150"	},
>	{ 0x8086, IWN_DID_2x00_1, "Intel(R) Centrino(R) Wireless-N 2200 BGN"	},
>	{ 0x8086, IWN_DID_2x00_2, "Intel(R) Centrino(R) Wireless-N 2200 BGN"	},
>	/* XXX 2200D is IWN_SDID_2x00_4; there's no way to express this here! */
>	{ 0x8086, IWN_DID_2x30_1, "Intel Centrino Wireless-N 2230"		},
>	{ 0x8086, IWN_DID_2x30_2, "Intel Centrino Wireless-N 2230"		},
>	{ 0x8086, IWN_DID_130_1, "Intel Centrino Wireless-N 130"		},
>	{ 0x8086, IWN_DID_130_2, "Intel Centrino Wireless-N 130"		},
>	{ 0x8086, IWN_DID_100_1, "Intel Centrino Wireless-N 100"		},
>	{ 0x8086, IWN_DID_100_2, "Intel Centrino Wireless-N 100"		},
>	{ 0x8086, IWN_DID_105_1, "Intel Centrino Wireless-N 105"		},
>	{ 0x8086, IWN_DID_105_2, "Intel Centrino Wireless-N 105"		},
>	{ 0x8086, IWN_DID_135_1, "Intel Centrino Wireless-N 135"		},
>	{ 0x8086, IWN_DID_135_2, "Intel Centrino Wireless-N 135"		},
>	{ 0x8086, IWN_DID_4965_1, "Intel Wireless WiFi Link 4965"		},
>	{ 0x8086, IWN_DID_6x00_1, "Intel Centrino Ultimate-N 6300"		},
>	{ 0x8086, IWN_DID_6x00_2, "Intel Centrino Advanced-N 6200"		},
>	{ 0x8086, IWN_DID_4965_2, "Intel Wireless WiFi Link 4965"		},
>	{ 0x8086, IWN_DID_4965_3, "Intel Wireless WiFi Link 4965"		},
>	{ 0x8086, IWN_DID_5x00_1, "Intel WiFi Link 5100"			},
>	{ 0x8086, IWN_DID_4965_4, "Intel Wireless WiFi Link 4965"		},
>	{ 0x8086, IWN_DID_5x00_3, "Intel Ultimate N WiFi Link 5300"		},
>	{ 0x8086, IWN_DID_5x00_4, "Intel Ultimate N WiFi Link 5300"		},
>	{ 0x8086, IWN_DID_5x00_2, "Intel WiFi Link 5100"			},
>	{ 0x8086, IWN_DID_6x00_3, "Intel Centrino Ultimate-N 6300"		},
>	{ 0x8086, IWN_DID_6x00_4, "Intel Centrino Advanced-N 6200"		},
>	{ 0x8086, IWN_DID_5x50_1, "Intel WiMAX/WiFi Link 5350"			},
>	{ 0x8086, IWN_DID_5x50_2, "Intel WiMAX/WiFi Link 5350"			},
>	{ 0x8086, IWN_DID_5x50_3, "Intel WiMAX/WiFi Link 5150"			},
>	{ 0x8086, IWN_DID_5x50_4, "Intel WiMAX/WiFi Link 5150"			},
>	{ 0x8086, IWN_DID_6035_1, "Intel Centrino Advanced 6235"		},
>	{ 0x8086, IWN_DID_6035_2, "Intel Centrino Advanced 6235"		},
>	{ 0, 0, NULL }
>};
>
>static int	iwn_probe(device_t);
>static int	iwn_attach(device_t);
>static int	iwn4965_attach(struct iwn_softc *, uint16_t);
>static int	iwn5000_attach(struct iwn_softc *, uint16_t);
>static int	iwn_config_specific(struct iwn_softc *, uint16_t);
>static void	iwn_radiotap_attach(struct iwn_softc *);
>static void	iwn_sysctlattach(struct iwn_softc *);
>static struct ieee80211vap *iwn_vap_create(struct ieee80211com *,
>		    const char [IFNAMSIZ], int, enum ieee80211_opmode, int,
>		    const uint8_t [IEEE80211_ADDR_LEN],
>		    const uint8_t [IEEE80211_ADDR_LEN]);
>static void	iwn_vap_delete(struct ieee80211vap *);
>static int	iwn_detach(device_t);
>static int	iwn_shutdown(device_t);
>static int	iwn_suspend(device_t);
>static int	iwn_resume(device_t);
>static int	iwn_nic_lock(struct iwn_softc *);
>static int	iwn_eeprom_lock(struct iwn_softc *);
>static int	iwn_init_otprom(struct iwn_softc *);
>static int	iwn_read_prom_data(struct iwn_softc *, uint32_t, void *, int);
>static void	iwn_dma_map_addr(void *, bus_dma_segment_t *, int, int);
>static int	iwn_dma_contig_alloc(struct iwn_softc *, struct iwn_dma_info *,
>		    void **, bus_size_t, bus_size_t);
>static void	iwn_dma_contig_free(struct iwn_dma_info *);
>static int	iwn_alloc_sched(struct iwn_softc *);
>static void	iwn_free_sched(struct iwn_softc *);
>static int	iwn_alloc_kw(struct iwn_softc *);
>static void	iwn_free_kw(struct iwn_softc *);
>static int	iwn_alloc_ict(struct iwn_softc *);
>static void	iwn_free_ict(struct iwn_softc *);
>static int	iwn_alloc_fwmem(struct iwn_softc *);
>static void	iwn_free_fwmem(struct iwn_softc *);
>static int	iwn_alloc_rx_ring(struct iwn_softc *, struct iwn_rx_ring *);
>static void	iwn_reset_rx_ring(struct iwn_softc *, struct iwn_rx_ring *);
>static void	iwn_free_rx_ring(struct iwn_softc *, struct iwn_rx_ring *);
>static int	iwn_alloc_tx_ring(struct iwn_softc *, struct iwn_tx_ring *,
>		    int);
>static void	iwn_reset_tx_ring(struct iwn_softc *, struct iwn_tx_ring *);
>static void	iwn_free_tx_ring(struct iwn_softc *, struct iwn_tx_ring *);
>static void	iwn5000_ict_reset(struct iwn_softc *);
>static int	iwn_read_eeprom(struct iwn_softc *,
>		    uint8_t macaddr[IEEE80211_ADDR_LEN]);
>static void	iwn4965_read_eeprom(struct iwn_softc *);
>#ifdef	IWN_DEBUG
>static void	iwn4965_print_power_group(struct iwn_softc *, int);
>#endif
>static void	iwn5000_read_eeprom(struct iwn_softc *);
>static uint32_t	iwn_eeprom_channel_flags(struct iwn_eeprom_chan *);
>static void	iwn_read_eeprom_band(struct iwn_softc *, int, int, int *,
>		    struct ieee80211_channel[]);
>static void	iwn_read_eeprom_ht40(struct iwn_softc *, int, int, int *,
>		    struct ieee80211_channel[]);
>static void	iwn_read_eeprom_channels(struct iwn_softc *, int, uint32_t);
>static struct iwn_eeprom_chan *iwn_find_eeprom_channel(struct iwn_softc *,
>		    struct ieee80211_channel *);
>static void	iwn_getradiocaps(struct ieee80211com *, int, int *,
>		    struct ieee80211_channel[]);
>static int	iwn_setregdomain(struct ieee80211com *,
>		    struct ieee80211_regdomain *, int,
>		    struct ieee80211_channel[]);
>static void	iwn_read_eeprom_enhinfo(struct iwn_softc *);
>static struct ieee80211_node *iwn_node_alloc(struct ieee80211vap *,
>		    const uint8_t mac[IEEE80211_ADDR_LEN]);
>static void	iwn_newassoc(struct ieee80211_node *, int);
>static int	iwn_media_change(struct ifnet *);
>static int	iwn_newstate(struct ieee80211vap *, enum ieee80211_state, int);
>static void	iwn_calib_timeout(void *);
>static void	iwn_rx_phy(struct iwn_softc *, struct iwn_rx_desc *,
>		    struct iwn_rx_data *);
>static void	iwn_rx_done(struct iwn_softc *, struct iwn_rx_desc *,
>		    struct iwn_rx_data *);
>static void	iwn_rx_compressed_ba(struct iwn_softc *, struct iwn_rx_desc *,
>		    struct iwn_rx_data *);
>static void	iwn5000_rx_calib_results(struct iwn_softc *,
>		    struct iwn_rx_desc *, struct iwn_rx_data *);
>static void	iwn_rx_statistics(struct iwn_softc *, struct iwn_rx_desc *,
>		    struct iwn_rx_data *);
>static void	iwn4965_tx_done(struct iwn_softc *, struct iwn_rx_desc *,
>		    struct iwn_rx_data *);
>static void	iwn5000_tx_done(struct iwn_softc *, struct iwn_rx_desc *,
>		    struct iwn_rx_data *);
>static void	iwn_tx_done(struct iwn_softc *, struct iwn_rx_desc *, int,
>		    uint8_t);
>static void	iwn_ampdu_tx_done(struct iwn_softc *, int, int, int, int, void *);
>static void	iwn_cmd_done(struct iwn_softc *, struct iwn_rx_desc *);
>static void	iwn_notif_intr(struct iwn_softc *);
>static void	iwn_wakeup_intr(struct iwn_softc *);
>static void	iwn_rftoggle_intr(struct iwn_softc *);
>static void	iwn_fatal_intr(struct iwn_softc *);
>static void	iwn_intr(void *);
>static void	iwn4965_update_sched(struct iwn_softc *, int, int, uint8_t,
>		    uint16_t);
>static void	iwn5000_update_sched(struct iwn_softc *, int, int, uint8_t,
>		    uint16_t);
>#ifdef notyet
>static void	iwn5000_reset_sched(struct iwn_softc *, int, int);
>#endif
>static int	iwn_tx_data(struct iwn_softc *, struct mbuf *,
>		    struct ieee80211_node *);
>static int	iwn_tx_data_raw(struct iwn_softc *, struct mbuf *,
>		    struct ieee80211_node *,
>		    const struct ieee80211_bpf_params *params);
>static void	iwn_xmit_task(void *arg0, int pending);
>static int	iwn_raw_xmit(struct ieee80211_node *, struct mbuf *,
>		    const struct ieee80211_bpf_params *);
>static int	iwn_transmit(struct ieee80211com *, struct mbuf *);
>static void	iwn_scan_timeout(void *);
>static void	iwn_watchdog(void *);
>static int	iwn_ioctl(struct ieee80211com *, u_long , void *);
>static void	iwn_parent(struct ieee80211com *);
>static int	iwn_cmd(struct iwn_softc *, int, const void *, int, int);
>static int	iwn4965_add_node(struct iwn_softc *, struct iwn_node_info *,
>		    int);
>static int	iwn5000_add_node(struct iwn_softc *, struct iwn_node_info *,
>		    int);
>static int	iwn_set_link_quality(struct iwn_softc *,
>		    struct ieee80211_node *);
>static int	iwn_add_broadcast_node(struct iwn_softc *, int);
>static int	iwn_updateedca(struct ieee80211com *);
>static void	iwn_update_mcast(struct ieee80211com *);
>static void	iwn_set_led(struct iwn_softc *, uint8_t, uint8_t, uint8_t);
>static int	iwn_set_critical_temp(struct iwn_softc *);
>static int	iwn_set_timing(struct iwn_softc *, struct ieee80211_node *);
>static void	iwn4965_power_calibration(struct iwn_softc *, int);
>static int	iwn4965_set_txpower(struct iwn_softc *,
>		    struct ieee80211_channel *, int);
>static int	iwn5000_set_txpower(struct iwn_softc *,
>		    struct ieee80211_channel *, int);
>static int	iwn4965_get_rssi(struct iwn_softc *, struct iwn_rx_stat *);
>static int	iwn5000_get_rssi(struct iwn_softc *, struct iwn_rx_stat *);
>static int	iwn_get_noise(const struct iwn_rx_general_stats *);
>static int	iwn4965_get_temperature(struct iwn_softc *);
>static int	iwn5000_get_temperature(struct iwn_softc *);
>static int	iwn_init_sensitivity(struct iwn_softc *);
>static void	iwn_collect_noise(struct iwn_softc *,
>		    const struct iwn_rx_general_stats *);
>static int	iwn4965_init_gains(struct iwn_softc *);
>static int	iwn5000_init_gains(struct iwn_softc *);
>static int	iwn4965_set_gains(struct iwn_softc *);
>static int	iwn5000_set_gains(struct iwn_softc *);
>static void	iwn_tune_sensitivity(struct iwn_softc *,
>		    const struct iwn_rx_stats *);
>static void	iwn_save_stats_counters(struct iwn_softc *,
>		    const struct iwn_stats *);
>static int	iwn_send_sensitivity(struct iwn_softc *);
>static void	iwn_check_rx_recovery(struct iwn_softc *, struct iwn_stats *);
>static int	iwn_set_pslevel(struct iwn_softc *, int, int, int);
>static int	iwn_send_btcoex(struct iwn_softc *);
>static int	iwn_send_advanced_btcoex(struct iwn_softc *);
>static int	iwn5000_runtime_calib(struct iwn_softc *);
>static int	iwn_config(struct iwn_softc *);
>static int	iwn_scan(struct iwn_softc *, struct ieee80211vap *,
>		    struct ieee80211_scan_state *, struct ieee80211_channel *);
>static int	iwn_auth(struct iwn_softc *, struct ieee80211vap *vap);
>static int	iwn_run(struct iwn_softc *, struct ieee80211vap *vap);
>static int	iwn_ampdu_rx_start(struct ieee80211_node *,
>		    struct ieee80211_rx_ampdu *, int, int, int);
>static void	iwn_ampdu_rx_stop(struct ieee80211_node *,
>		    struct ieee80211_rx_ampdu *);
>static int	iwn_addba_request(struct ieee80211_node *,
>		    struct ieee80211_tx_ampdu *, int, int, int);
>static int	iwn_addba_response(struct ieee80211_node *,
>		    struct ieee80211_tx_ampdu *, int, int, int);
>static int	iwn_ampdu_tx_start(struct ieee80211com *,
>		    struct ieee80211_node *, uint8_t);
>static void	iwn_ampdu_tx_stop(struct ieee80211_node *,
>		    struct ieee80211_tx_ampdu *);
>static void	iwn4965_ampdu_tx_start(struct iwn_softc *,
>		    struct ieee80211_node *, int, uint8_t, uint16_t);
>static void	iwn4965_ampdu_tx_stop(struct iwn_softc *, int,
>		    uint8_t, uint16_t);
>static void	iwn5000_ampdu_tx_start(struct iwn_softc *,
>		    struct ieee80211_node *, int, uint8_t, uint16_t);
>static void	iwn5000_ampdu_tx_stop(struct iwn_softc *, int,
>		    uint8_t, uint16_t);
>static int	iwn5000_query_calibration(struct iwn_softc *);
>static int	iwn5000_send_calibration(struct iwn_softc *);
>static int	iwn5000_send_wimax_coex(struct iwn_softc *);
>static int	iwn5000_crystal_calib(struct iwn_softc *);
>static int	iwn5000_temp_offset_calib(struct iwn_softc *);
>static int	iwn5000_temp_offset_calibv2(struct iwn_softc *);
>static int	iwn4965_post_alive(struct iwn_softc *);
>static int	iwn5000_post_alive(struct iwn_softc *);
>static int	iwn4965_load_bootcode(struct iwn_softc *, const uint8_t *,
>		    int);
>static int	iwn4965_load_firmware(struct iwn_softc *);
>static int	iwn5000_load_firmware_section(struct iwn_softc *, uint32_t,
>		    const uint8_t *, int);
>static int	iwn5000_load_firmware(struct iwn_softc *);
>static int	iwn_read_firmware_leg(struct iwn_softc *,
>		    struct iwn_fw_info *);
>static int	iwn_read_firmware_tlv(struct iwn_softc *,
>		    struct iwn_fw_info *, uint16_t);
>static int	iwn_read_firmware(struct iwn_softc *);
>static void	iwn_unload_firmware(struct iwn_softc *);
>static int	iwn_clock_wait(struct iwn_softc *);
>static int	iwn_apm_init(struct iwn_softc *);
>static void	iwn_apm_stop_master(struct iwn_softc *);
>static void	iwn_apm_stop(struct iwn_softc *);
>static int	iwn4965_nic_config(struct iwn_softc *);
>static int	iwn5000_nic_config(struct iwn_softc *);
>static int	iwn_hw_prepare(struct iwn_softc *);
>static int	iwn_hw_init(struct iwn_softc *);
>static void	iwn_hw_stop(struct iwn_softc *);
>static void	iwn_radio_on(void *, int);
>static void	iwn_radio_off(void *, int);
>static void	iwn_panicked(void *, int);
>static void	iwn_init_locked(struct iwn_softc *);
>static void	iwn_init(struct iwn_softc *);
>static void	iwn_stop_locked(struct iwn_softc *);
>static void	iwn_stop(struct iwn_softc *);
>static void	iwn_scan_start(struct ieee80211com *);
>static void	iwn_scan_end(struct ieee80211com *);
>static void	iwn_set_channel(struct ieee80211com *);
>static void	iwn_scan_curchan(struct ieee80211_scan_state *, unsigned long);
>static void	iwn_scan_mindwell(struct ieee80211_scan_state *);
>#ifdef	IWN_DEBUG
>static char	*iwn_get_csr_string(int);
>static void	iwn_debug_register(struct iwn_softc *);
>#endif
>
>static device_method_t iwn_methods[] = {
>	/* Device interface */
>	DEVMETHOD(device_probe,		iwn_probe),
>	DEVMETHOD(device_attach,	iwn_attach),
>	DEVMETHOD(device_detach,	iwn_detach),
>	DEVMETHOD(device_shutdown,	iwn_shutdown),
>	DEVMETHOD(device_suspend,	iwn_suspend),
>	DEVMETHOD(device_resume,	iwn_resume),
>
>	DEVMETHOD_END
>};
>
>static driver_t iwn_driver = {
>	"iwn",
>	iwn_methods,
>	sizeof(struct iwn_softc)
>};
>static devclass_t iwn_devclass;
>
>DRIVER_MODULE(iwn, pci, iwn_driver, iwn_devclass, NULL, NULL);
>
>MODULE_VERSION(iwn, 1);
>
>MODULE_DEPEND(iwn, firmware, 1, 1, 1);
>MODULE_DEPEND(iwn, pci, 1, 1, 1);
>MODULE_DEPEND(iwn, wlan, 1, 1, 1);
>
>static d_ioctl_t iwn_cdev_ioctl;
>static d_open_t iwn_cdev_open;
>static d_close_t iwn_cdev_close;
>
>static struct cdevsw iwn_cdevsw = {
>	.d_version = D_VERSION,
>	.d_flags = 0,
>	.d_open = iwn_cdev_open,
>	.d_close = iwn_cdev_close,
>	.d_ioctl = iwn_cdev_ioctl,
>	.d_name = "iwn",
>};
>
>static int
>iwn_probe(device_t dev)
>{
>	const struct iwn_ident *ident;
>
>	for (ident = iwn_ident_table; ident->name != NULL; ident++) {
>		if (pci_get_vendor(dev) == ident->vendor &&
>		    pci_get_device(dev) == ident->device) {
>			device_set_desc(dev, ident->name);
>			return (BUS_PROBE_DEFAULT);
>		}
>	}
>	return ENXIO;
>}
>
>static int
>iwn_is_3stream_device(struct iwn_softc *sc)
>{
>	/* XXX for now only 5300, until the 5350 can be tested */
>	if (sc->hw_type == IWN_HW_REV_TYPE_5300)
>		return (1);
>	return (0);
>}
>
>static int
>iwn_attach(device_t dev)
>{
>	struct iwn_softc *sc = device_get_softc(dev);
>	struct ieee80211com *ic;
>	int i, error, rid;
>
>	sc->sc_dev = dev;
>
>#ifdef	IWN_DEBUG
>	error = resource_int_value(device_get_name(sc->sc_dev),
>	    device_get_unit(sc->sc_dev), "debug", &(sc->sc_debug));
>	if (error != 0)
>		sc->sc_debug = 0;
>#else
>	sc->sc_debug = 0;
>#endif
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: begin\n",__func__);
>
>	/*
>	 * Get the offset of the PCI Express Capability Structure in PCI
>	 * Configuration Space.
>	 */
>	error = pci_find_cap(dev, PCIY_EXPRESS, &sc->sc_cap_off);
>	if (error != 0) {
>		device_printf(dev, "PCIe capability structure not found!\n");
>		return error;
>	}
>
>	/* Clear device-specific "PCI retry timeout" register (41h). */
>	pci_write_config(dev, 0x41, 0, 1);
>
>	/* Enable bus-mastering. */
>	pci_enable_busmaster(dev);
>
>	rid = PCIR_BAR(0);
>	sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
>	    RF_ACTIVE);
>	if (sc->mem == NULL) {
>		device_printf(dev, "can't map mem space\n");
>		error = ENOMEM;
>		return error;
>	}
>	sc->sc_st = rman_get_bustag(sc->mem);
>	sc->sc_sh = rman_get_bushandle(sc->mem);
>
>	i = 1;
>	rid = 0;
>	if (pci_alloc_msi(dev, &i) == 0)
>		rid = 1;
>	/* Install interrupt handler. */
>	sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE |
>	    (rid != 0 ? 0 : RF_SHAREABLE));
>	if (sc->irq == NULL) {
>		device_printf(dev, "can't map interrupt\n");
>		error = ENOMEM;
>		goto fail;
>	}
>
>	IWN_LOCK_INIT(sc);
>
>	/* Read hardware revision and attach. */
>	sc->hw_type = (IWN_READ(sc, IWN_HW_REV) >> IWN_HW_REV_TYPE_SHIFT)
>	    & IWN_HW_REV_TYPE_MASK;
>	sc->subdevice_id = pci_get_subdevice(dev);
>
>	/*
>	 * 4965 versus 5000 and later have different methods.
>	 * Let's set those up first.
>	 */
>	if (sc->hw_type == IWN_HW_REV_TYPE_4965)
>		error = iwn4965_attach(sc, pci_get_device(dev));
>	else
>		error = iwn5000_attach(sc, pci_get_device(dev));
>	if (error != 0) {
>		device_printf(dev, "could not attach device, error %d\n",
>		    error);
>		goto fail;
>	}
>
>	/*
>	 * Next, let's setup the various parameters of each NIC.
>	 */
>	error = iwn_config_specific(sc, pci_get_device(dev));
>	if (error != 0) {
>		device_printf(dev, "could not attach device, error %d\n",
>		    error);
>		goto fail;
>	}
>
>	if ((error = iwn_hw_prepare(sc)) != 0) {
>		device_printf(dev, "hardware not ready, error %d\n", error);
>		goto fail;
>	}
>
>	/* Allocate DMA memory for firmware transfers. */
>	if ((error = iwn_alloc_fwmem(sc)) != 0) {
>		device_printf(dev,
>		    "could not allocate memory for firmware, error %d\n",
>		    error);
>		goto fail;
>	}
>
>	/* Allocate "Keep Warm" page. */
>	if ((error = iwn_alloc_kw(sc)) != 0) {
>		device_printf(dev,
>		    "could not allocate keep warm page, error %d\n", error);
>		goto fail;
>	}
>
>	/* Allocate ICT table for 5000 Series. */
>	if (sc->hw_type != IWN_HW_REV_TYPE_4965 &&
>	    (error = iwn_alloc_ict(sc)) != 0) {
>		device_printf(dev, "could not allocate ICT table, error %d\n",
>		    error);
>		goto fail;
>	}
>
>	/* Allocate TX scheduler "rings". */
>	if ((error = iwn_alloc_sched(sc)) != 0) {
>		device_printf(dev,
>		    "could not allocate TX scheduler rings, error %d\n", error);
>		goto fail;
>	}
>
>	/* Allocate TX rings (16 on 4965AGN, 20 on >=5000). */
>	for (i = 0; i < sc->ntxqs; i++) {
>		if ((error = iwn_alloc_tx_ring(sc, &sc->txq[i], i)) != 0) {
>			device_printf(dev,
>			    "could not allocate TX ring %d, error %d\n", i,
>			    error);
>			goto fail;
>		}
>	}
>
>	/* Allocate RX ring. */
>	if ((error = iwn_alloc_rx_ring(sc, &sc->rxq)) != 0) {
>		device_printf(dev, "could not allocate RX ring, error %d\n",
>		    error);
>		goto fail;
>	}
>
>	/* Clear pending interrupts. */
>	IWN_WRITE(sc, IWN_INT, 0xffffffff);
>
>	ic = &sc->sc_ic;
>	ic->ic_softc = sc;
>	ic->ic_name = device_get_nameunit(dev);
>	ic->ic_phytype = IEEE80211_T_OFDM;	/* not only, but not used */
>	ic->ic_opmode = IEEE80211_M_STA;	/* default to BSS mode */
>
>	/* Set device capabilities. */
>	ic->ic_caps =
>		  IEEE80211_C_STA		/* station mode supported */
>		| IEEE80211_C_MONITOR		/* monitor mode supported */
>#if 0
>		| IEEE80211_C_BGSCAN		/* background scanning */
>#endif
>		| IEEE80211_C_TXPMGT		/* tx power management */
>		| IEEE80211_C_SHSLOT		/* short slot time supported */
>		| IEEE80211_C_WPA
>		| IEEE80211_C_SHPREAMBLE	/* short preamble supported */
>#if 0
>		| IEEE80211_C_IBSS		/* ibss/adhoc mode */
>#endif
>		| IEEE80211_C_WME		/* WME */
>		| IEEE80211_C_PMGT		/* Station-side power mgmt */
>		;
>
>	/* Read MAC address, channels, etc from EEPROM. */
>	if ((error = iwn_read_eeprom(sc, ic->ic_macaddr)) != 0) {
>		device_printf(dev, "could not read EEPROM, error %d\n",
>		    error);
>		goto fail;
>	}
>
>	/* Count the number of available chains. */
>	sc->ntxchains =
>	    ((sc->txchainmask >> 2) & 1) +
>	    ((sc->txchainmask >> 1) & 1) +
>	    ((sc->txchainmask >> 0) & 1);
>	sc->nrxchains =
>	    ((sc->rxchainmask >> 2) & 1) +
>	    ((sc->rxchainmask >> 1) & 1) +
>	    ((sc->rxchainmask >> 0) & 1);
>	if (bootverbose) {
>		device_printf(dev, "MIMO %dT%dR, %.4s, address %6D\n",
>		    sc->ntxchains, sc->nrxchains, sc->eeprom_domain,
>		    ic->ic_macaddr, ":");
>	}
>
>	if (sc->sc_flags & IWN_FLAG_HAS_11N) {
>		ic->ic_rxstream = sc->nrxchains;
>		ic->ic_txstream = sc->ntxchains;
>
>		/*
>		 * Some of the 3 antenna devices (ie, the 4965) only supports
>		 * 2x2 operation.  So correct the number of streams if
>		 * it's not a 3-stream device.
>		 */
>		if (! iwn_is_3stream_device(sc)) {
>			if (ic->ic_rxstream > 2)
>				ic->ic_rxstream = 2;
>			if (ic->ic_txstream > 2)
>				ic->ic_txstream = 2;
>		}
>
>		ic->ic_htcaps =
>			  IEEE80211_HTCAP_SMPS_OFF	/* SMPS mode disabled */
>			| IEEE80211_HTCAP_SHORTGI20	/* short GI in 20MHz */
>			| IEEE80211_HTCAP_CHWIDTH40	/* 40MHz channel width*/
>			| IEEE80211_HTCAP_SHORTGI40	/* short GI in 40MHz */
>#ifdef notyet
>			| IEEE80211_HTCAP_GREENFIELD
>#if IWN_RBUF_SIZE == 8192
>			| IEEE80211_HTCAP_MAXAMSDU_7935	/* max A-MSDU length */
>#else
>			| IEEE80211_HTCAP_MAXAMSDU_3839	/* max A-MSDU length */
>#endif
>#endif
>			/* s/w capabilities */
>			| IEEE80211_HTC_HT		/* HT operation */
>			| IEEE80211_HTC_AMPDU		/* tx A-MPDU */
>#ifdef notyet
>			| IEEE80211_HTC_AMSDU		/* tx A-MSDU */
>#endif
>			;
>	}
>
>	ieee80211_ifattach(ic);
>	ic->ic_vap_create = iwn_vap_create;
>	ic->ic_ioctl = iwn_ioctl;
>	ic->ic_parent = iwn_parent;
>	ic->ic_vap_delete = iwn_vap_delete;
>	ic->ic_transmit = iwn_transmit;
>	ic->ic_raw_xmit = iwn_raw_xmit;
>	ic->ic_node_alloc = iwn_node_alloc;
>	sc->sc_ampdu_rx_start = ic->ic_ampdu_rx_start;
>	ic->ic_ampdu_rx_start = iwn_ampdu_rx_start;
>	sc->sc_ampdu_rx_stop = ic->ic_ampdu_rx_stop;
>	ic->ic_ampdu_rx_stop = iwn_ampdu_rx_stop;
>	sc->sc_addba_request = ic->ic_addba_request;
>	ic->ic_addba_request = iwn_addba_request;
>	sc->sc_addba_response = ic->ic_addba_response;
>	ic->ic_addba_response = iwn_addba_response;
>	sc->sc_addba_stop = ic->ic_addba_stop;
>	ic->ic_addba_stop = iwn_ampdu_tx_stop;
>	ic->ic_newassoc = iwn_newassoc;
>	ic->ic_wme.wme_update = iwn_updateedca;
>	ic->ic_update_mcast = iwn_update_mcast;
>	ic->ic_scan_start = iwn_scan_start;
>	ic->ic_scan_end = iwn_scan_end;
>	ic->ic_set_channel = iwn_set_channel;
>	ic->ic_scan_curchan = iwn_scan_curchan;
>	ic->ic_scan_mindwell = iwn_scan_mindwell;
>	ic->ic_getradiocaps = iwn_getradiocaps;
>	ic->ic_setregdomain = iwn_setregdomain;
>
>	iwn_radiotap_attach(sc);
>
>	callout_init_mtx(&sc->calib_to, &sc->sc_mtx, 0);
>	callout_init_mtx(&sc->scan_timeout, &sc->sc_mtx, 0);
>	callout_init_mtx(&sc->watchdog_to, &sc->sc_mtx, 0);
>	TASK_INIT(&sc->sc_radioon_task, 0, iwn_radio_on, sc);
>	TASK_INIT(&sc->sc_radiooff_task, 0, iwn_radio_off, sc);
>	TASK_INIT(&sc->sc_panic_task, 0, iwn_panicked, sc);
>	TASK_INIT(&sc->sc_xmit_task, 0, iwn_xmit_task, sc);
>
>	mbufq_init(&sc->sc_xmit_queue, 1024);
>
>	sc->sc_tq = taskqueue_create("iwn_taskq", M_WAITOK,
>	    taskqueue_thread_enqueue, &sc->sc_tq);
>	error = taskqueue_start_threads(&sc->sc_tq, 1, 0, "iwn_taskq");
>	if (error != 0) {
>		device_printf(dev, "can't start threads, error %d\n", error);
>		goto fail;
>	}
>
>	iwn_sysctlattach(sc);
>
>	/*
>	 * Hook our interrupt after all initialization is complete.
>	 */
>	error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE,
>	    NULL, iwn_intr, sc, &sc->sc_ih);
>	if (error != 0) {
>		device_printf(dev, "can't establish interrupt, error %d\n",
>		    error);
>		goto fail;
>	}
>
>#if 0
>	device_printf(sc->sc_dev, "%s: rx_stats=%d, rx_stats_bt=%d\n",
>	    __func__,
>	    sizeof(struct iwn_stats),
>	    sizeof(struct iwn_stats_bt));
>#endif
>
>	if (bootverbose)
>		ieee80211_announce(ic);
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__);
>
>	/* Add debug ioctl right at the end */
>	sc->sc_cdev = make_dev(&iwn_cdevsw, device_get_unit(dev),
>	    UID_ROOT, GID_WHEEL, 0600, "%s", device_get_nameunit(dev));
>	if (sc->sc_cdev == NULL) {
>		device_printf(dev, "failed to create debug character device\n");
>	} else {
>		sc->sc_cdev->si_drv1 = sc;
>	}
>	return 0;
>fail:
>	iwn_detach(dev);
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end in error\n",__func__);
>	return error;
>}
>
>/*
> * Define specific configuration based on device id and subdevice id
> * pid : PCI device id
> */
>static int
>iwn_config_specific(struct iwn_softc *sc, uint16_t pid)
>{
>
>	switch (pid) {
>/* 4965 series */
>	case IWN_DID_4965_1:
>	case IWN_DID_4965_2:
>	case IWN_DID_4965_3:
>	case IWN_DID_4965_4:
>		sc->base_params = &iwn4965_base_params;
>		sc->limits = &iwn4965_sensitivity_limits;
>		sc->fwname = "iwn4965fw";
>		/* Override chains masks, ROM is known to be broken. */
>		sc->txchainmask = IWN_ANT_AB;
>		sc->rxchainmask = IWN_ANT_ABC;
>		/* Enable normal btcoex */
>		sc->sc_flags |= IWN_FLAG_BTCOEX;
>		break;
>/* 1000 Series */
>	case IWN_DID_1000_1:
>	case IWN_DID_1000_2:
>		switch(sc->subdevice_id) {
>			case	IWN_SDID_1000_1:
>			case	IWN_SDID_1000_2:
>			case	IWN_SDID_1000_3:
>			case	IWN_SDID_1000_4:
>			case	IWN_SDID_1000_5:
>			case	IWN_SDID_1000_6:
>			case	IWN_SDID_1000_7:
>			case	IWN_SDID_1000_8:
>			case	IWN_SDID_1000_9:
>			case	IWN_SDID_1000_10:
>			case	IWN_SDID_1000_11:
>			case	IWN_SDID_1000_12:
>				sc->limits = &iwn1000_sensitivity_limits;
>				sc->base_params = &iwn1000_base_params;
>				sc->fwname = "iwn1000fw";
>				break;
>			default:
>				device_printf(sc->sc_dev, "adapter type id : 0x%04x sub id :"
>				    "0x%04x rev %d not supported (subdevice)\n", pid,
>				    sc->subdevice_id,sc->hw_type);
>				return ENOTSUP;
>		}
>		break;
>/* 6x00 Series */
>	case IWN_DID_6x00_2:
>	case IWN_DID_6x00_4:
>	case IWN_DID_6x00_1:
>	case IWN_DID_6x00_3:
>		sc->fwname = "iwn6000fw";
>		sc->limits = &iwn6000_sensitivity_limits;
>		switch(sc->subdevice_id) {
>			case IWN_SDID_6x00_1:
>			case IWN_SDID_6x00_2:
>			case IWN_SDID_6x00_8:
>				//iwl6000_3agn_cfg
>				sc->base_params = &iwn_6000_base_params;
>				break;
>			case IWN_SDID_6x00_3:
>			case IWN_SDID_6x00_6:
>			case IWN_SDID_6x00_9:
>				////iwl6000i_2agn
>			case IWN_SDID_6x00_4:
>			case IWN_SDID_6x00_7:
>			case IWN_SDID_6x00_10:
>				//iwl6000i_2abg_cfg
>			case IWN_SDID_6x00_5:
>				//iwl6000i_2bg_cfg
>				sc->base_params = &iwn_6000i_base_params;
>				sc->sc_flags |= IWN_FLAG_INTERNAL_PA;
>				sc->txchainmask = IWN_ANT_BC;
>				sc->rxchainmask = IWN_ANT_BC;
>				break;
>			default:
>				device_printf(sc->sc_dev, "adapter type id : 0x%04x sub id :"
>				    "0x%04x rev %d not supported (subdevice)\n", pid,
>				    sc->subdevice_id,sc->hw_type);
>				return ENOTSUP;
>		}
>		break;
>/* 6x05 Series */
>	case IWN_DID_6x05_1:
>	case IWN_DID_6x05_2:
>		switch(sc->subdevice_id) {
>			case IWN_SDID_6x05_1:
>			case IWN_SDID_6x05_4:
>			case IWN_SDID_6x05_6:
>				//iwl6005_2agn_cfg
>			case IWN_SDID_6x05_2:
>			case IWN_SDID_6x05_5:
>			case IWN_SDID_6x05_7:
>				//iwl6005_2abg_cfg
>			case IWN_SDID_6x05_3:
>				//iwl6005_2bg_cfg
>			case IWN_SDID_6x05_8:
>			case IWN_SDID_6x05_9:
>				//iwl6005_2agn_sff_cfg
>			case IWN_SDID_6x05_10:
>				//iwl6005_2agn_d_cfg
>			case IWN_SDID_6x05_11:
>				//iwl6005_2agn_mow1_cfg
>			case IWN_SDID_6x05_12:
>				//iwl6005_2agn_mow2_cfg
>				sc->fwname = "iwn6000g2afw";
>				sc->limits = &iwn6000_sensitivity_limits;
>				sc->base_params = &iwn_6000g2_base_params;
>				break;
>			default:
>				device_printf(sc->sc_dev, "adapter type id : 0x%04x sub id :"
>				    "0x%04x rev %d not supported (subdevice)\n", pid,
>				    sc->subdevice_id,sc->hw_type);
>				return ENOTSUP;
>		}
>		break;
>/* 6x35 Series */
>	case IWN_DID_6035_1:
>	case IWN_DID_6035_2:
>		switch(sc->subdevice_id) {
>			case IWN_SDID_6035_1:
>			case IWN_SDID_6035_2:
>			case IWN_SDID_6035_3:
>			case IWN_SDID_6035_4:
>				sc->fwname = "iwn6000g2bfw";
>				sc->limits = &iwn6235_sensitivity_limits;
>				sc->base_params = &iwn_6235_base_params;
>				break;
>			default:
>				device_printf(sc->sc_dev, "adapter type id : 0x%04x sub id :"
>				    "0x%04x rev %d not supported (subdevice)\n", pid,
>				    sc->subdevice_id,sc->hw_type);
>				return ENOTSUP;
>		}
>		break;
>/* 6x50 WiFi/WiMax Series */
>	case IWN_DID_6050_1:
>	case IWN_DID_6050_2:
>		switch(sc->subdevice_id) {
>			case IWN_SDID_6050_1:
>			case IWN_SDID_6050_3:
>			case IWN_SDID_6050_5:
>				//iwl6050_2agn_cfg
>			case IWN_SDID_6050_2:
>			case IWN_SDID_6050_4:
>			case IWN_SDID_6050_6:
>				//iwl6050_2abg_cfg
>				sc->fwname = "iwn6050fw";
>				sc->txchainmask = IWN_ANT_AB;
>				sc->rxchainmask = IWN_ANT_AB;
>				sc->limits = &iwn6000_sensitivity_limits;
>				sc->base_params = &iwn_6050_base_params;
>				break;
>			default:
>				device_printf(sc->sc_dev, "adapter type id : 0x%04x sub id :"
>				    "0x%04x rev %d not supported (subdevice)\n", pid,
>				    sc->subdevice_id,sc->hw_type);
>				return ENOTSUP;
>		}
>		break;
>/* 6150 WiFi/WiMax Series */
>	case IWN_DID_6150_1:
>	case IWN_DID_6150_2:
>		switch(sc->subdevice_id) {
>			case IWN_SDID_6150_1:
>			case IWN_SDID_6150_3:
>			case IWN_SDID_6150_5:
>				// iwl6150_bgn_cfg
>			case IWN_SDID_6150_2:
>			case IWN_SDID_6150_4:
>			case IWN_SDID_6150_6:
>				//iwl6150_bg_cfg
>				sc->fwname = "iwn6050fw";
>				sc->limits = &iwn6000_sensitivity_limits;
>				sc->base_params = &iwn_6150_base_params;
>				break;
>			default:
>				device_printf(sc->sc_dev, "adapter type id : 0x%04x sub id :"
>				    "0x%04x rev %d not supported (subdevice)\n", pid,
>				    sc->subdevice_id,sc->hw_type);
>				return ENOTSUP;
>		}
>		break;
>/* 6030 Series and 1030 Series */
>	case IWN_DID_x030_1:
>	case IWN_DID_x030_2:
>	case IWN_DID_x030_3:
>	case IWN_DID_x030_4:
>		switch(sc->subdevice_id) {
>			case IWN_SDID_x030_1:
>			case IWN_SDID_x030_3:
>			case IWN_SDID_x030_5:
>			// iwl1030_bgn_cfg
>			case IWN_SDID_x030_2:
>			case IWN_SDID_x030_4:
>			case IWN_SDID_x030_6:
>			//iwl1030_bg_cfg
>			case IWN_SDID_x030_7:
>			case IWN_SDID_x030_10:
>			case IWN_SDID_x030_14:
>			//iwl6030_2agn_cfg
>			case IWN_SDID_x030_8:
>			case IWN_SDID_x030_11:
>			case IWN_SDID_x030_15:
>			// iwl6030_2bgn_cfg
>			case IWN_SDID_x030_9:
>			case IWN_SDID_x030_12:
>			case IWN_SDID_x030_16:
>			// iwl6030_2abg_cfg
>			case IWN_SDID_x030_13:
>			//iwl6030_2bg_cfg
>				sc->fwname = "iwn6000g2bfw";
>				sc->limits = &iwn6000_sensitivity_limits;
>				sc->base_params = &iwn_6000g2b_base_params;
>				break;
>			default:
>				device_printf(sc->sc_dev, "adapter type id : 0x%04x sub id :"
>				    "0x%04x rev %d not supported (subdevice)\n", pid,
>				    sc->subdevice_id,sc->hw_type);
>				return ENOTSUP;
>		}
>		break;
>/* 130 Series WiFi */
>/* XXX: This series will need adjustment for rate.
> * see rx_with_siso_diversity in linux kernel
> */
>	case IWN_DID_130_1:
>	case IWN_DID_130_2:
>		switch(sc->subdevice_id) {
>			case IWN_SDID_130_1:
>			case IWN_SDID_130_3:
>			case IWN_SDID_130_5:
>			//iwl130_bgn_cfg
>			case IWN_SDID_130_2:
>			case IWN_SDID_130_4:
>			case IWN_SDID_130_6:
>			//iwl130_bg_cfg
>				sc->fwname = "iwn6000g2bfw";
>				sc->limits = &iwn6000_sensitivity_limits;
>				sc->base_params = &iwn_6000g2b_base_params;
>				break;
>			default:
>				device_printf(sc->sc_dev, "adapter type id : 0x%04x sub id :"
>				    "0x%04x rev %d not supported (subdevice)\n", pid,
>				    sc->subdevice_id,sc->hw_type);
>				return ENOTSUP;
>		}
>		break;
>/* 100 Series WiFi */
>	case IWN_DID_100_1:
>	case IWN_DID_100_2:
>		switch(sc->subdevice_id) {
>			case IWN_SDID_100_1:
>			case IWN_SDID_100_2:
>			case IWN_SDID_100_3:
>			case IWN_SDID_100_4:
>			case IWN_SDID_100_5:
>			case IWN_SDID_100_6:
>				sc->limits = &iwn1000_sensitivity_limits;
>				sc->base_params = &iwn1000_base_params;
>				sc->fwname = "iwn100fw";
>				break;
>			default:
>				device_printf(sc->sc_dev, "adapter type id : 0x%04x sub id :"
>				    "0x%04x rev %d not supported (subdevice)\n", pid,
>				    sc->subdevice_id,sc->hw_type);
>				return ENOTSUP;
>		}
>		break;
>
>/* 105 Series */
>/* XXX: This series will need adjustment for rate.
> * see rx_with_siso_diversity in linux kernel
> */
>	case IWN_DID_105_1:
>	case IWN_DID_105_2:
>		switch(sc->subdevice_id) {
>			case IWN_SDID_105_1:
>			case IWN_SDID_105_2:
>			case IWN_SDID_105_3:
>			//iwl105_bgn_cfg
>			case IWN_SDID_105_4:
>			//iwl105_bgn_d_cfg
>				sc->limits = &iwn2030_sensitivity_limits;
>				sc->base_params = &iwn2000_base_params;
>				sc->fwname = "iwn105fw";
>				break;
>			default:
>				device_printf(sc->sc_dev, "adapter type id : 0x%04x sub id :"
>				    "0x%04x rev %d not supported (subdevice)\n", pid,
>				    sc->subdevice_id,sc->hw_type);
>				return ENOTSUP;
>		}
>		break;
>
>/* 135 Series */
>/* XXX: This series will need adjustment for rate.
> * see rx_with_siso_diversity in linux kernel
> */
>	case IWN_DID_135_1:
>	case IWN_DID_135_2:
>		switch(sc->subdevice_id) {
>			case IWN_SDID_135_1:
>			case IWN_SDID_135_2:
>			case IWN_SDID_135_3:
>				sc->limits = &iwn2030_sensitivity_limits;
>				sc->base_params = &iwn2030_base_params;
>				sc->fwname = "iwn135fw";
>				break;
>			default:
>				device_printf(sc->sc_dev, "adapter type id : 0x%04x sub id :"
>				    "0x%04x rev %d not supported (subdevice)\n", pid,
>				    sc->subdevice_id,sc->hw_type);
>				return ENOTSUP;
>		}
>		break;
>
>/* 2x00 Series */
>	case IWN_DID_2x00_1:
>	case IWN_DID_2x00_2:
>		switch(sc->subdevice_id) {
>			case IWN_SDID_2x00_1:
>			case IWN_SDID_2x00_2:
>			case IWN_SDID_2x00_3:
>			//iwl2000_2bgn_cfg
>			case IWN_SDID_2x00_4:
>			//iwl2000_2bgn_d_cfg
>				sc->limits = &iwn2030_sensitivity_limits;
>				sc->base_params = &iwn2000_base_params;
>				sc->fwname = "iwn2000fw";
>				break;
>			default:
>				device_printf(sc->sc_dev, "adapter type id : 0x%04x sub id :"
>				    "0x%04x rev %d not supported (subdevice) \n",
>				    pid, sc->subdevice_id, sc->hw_type);
>				return ENOTSUP;
>		}
>		break;
>/* 2x30 Series */
>	case IWN_DID_2x30_1:
>	case IWN_DID_2x30_2:
>		switch(sc->subdevice_id) {
>			case IWN_SDID_2x30_1:
>			case IWN_SDID_2x30_3:
>			case IWN_SDID_2x30_5:
>			//iwl100_bgn_cfg
>			case IWN_SDID_2x30_2:
>			case IWN_SDID_2x30_4:
>			case IWN_SDID_2x30_6:
>			//iwl100_bg_cfg
>				sc->limits = &iwn2030_sensitivity_limits;
>				sc->base_params = &iwn2030_base_params;
>				sc->fwname = "iwn2030fw";
>				break;
>			default:
>				device_printf(sc->sc_dev, "adapter type id : 0x%04x sub id :"
>				    "0x%04x rev %d not supported (subdevice)\n", pid,
>				    sc->subdevice_id,sc->hw_type);
>				return ENOTSUP;
>		}
>		break;
>/* 5x00 Series */
>	case IWN_DID_5x00_1:
>	case IWN_DID_5x00_2:
>	case IWN_DID_5x00_3:
>	case IWN_DID_5x00_4:
>		sc->limits = &iwn5000_sensitivity_limits;
>		sc->base_params = &iwn5000_base_params;
>		sc->fwname = "iwn5000fw";
>		switch(sc->subdevice_id) {
>			case IWN_SDID_5x00_1:
>			case IWN_SDID_5x00_2:
>			case IWN_SDID_5x00_3:
>			case IWN_SDID_5x00_4:
>			case IWN_SDID_5x00_9:
>			case IWN_SDID_5x00_10:
>			case IWN_SDID_5x00_11:
>			case IWN_SDID_5x00_12:
>			case IWN_SDID_5x00_17:
>			case IWN_SDID_5x00_18:
>			case IWN_SDID_5x00_19:
>			case IWN_SDID_5x00_20:
>			//iwl5100_agn_cfg
>				sc->txchainmask = IWN_ANT_B;
>				sc->rxchainmask = IWN_ANT_AB;
>				break;
>			case IWN_SDID_5x00_5:
>			case IWN_SDID_5x00_6:
>			case IWN_SDID_5x00_13:
>			case IWN_SDID_5x00_14:
>			case IWN_SDID_5x00_21:
>			case IWN_SDID_5x00_22:
>			//iwl5100_bgn_cfg
>				sc->txchainmask = IWN_ANT_B;
>				sc->rxchainmask = IWN_ANT_AB;
>				break;
>			case IWN_SDID_5x00_7:
>			case IWN_SDID_5x00_8:
>			case IWN_SDID_5x00_15:
>			case IWN_SDID_5x00_16:
>			case IWN_SDID_5x00_23:
>			case IWN_SDID_5x00_24:
>			//iwl5100_abg_cfg
>				sc->txchainmask = IWN_ANT_B;
>				sc->rxchainmask = IWN_ANT_AB;
>				break;
>			case IWN_SDID_5x00_25:
>			case IWN_SDID_5x00_26:
>			case IWN_SDID_5x00_27:
>			case IWN_SDID_5x00_28:
>			case IWN_SDID_5x00_29:
>			case IWN_SDID_5x00_30:
>			case IWN_SDID_5x00_31:
>			case IWN_SDID_5x00_32:
>			case IWN_SDID_5x00_33:
>			case IWN_SDID_5x00_34:
>			case IWN_SDID_5x00_35:
>			case IWN_SDID_5x00_36:
>			//iwl5300_agn_cfg
>				sc->txchainmask = IWN_ANT_ABC;
>				sc->rxchainmask = IWN_ANT_ABC;
>				break;
>			default:
>				device_printf(sc->sc_dev, "adapter type id : 0x%04x sub id :"
>				    "0x%04x rev %d not supported (subdevice)\n", pid,
>				    sc->subdevice_id,sc->hw_type);
>				return ENOTSUP;
>		}
>		break;
>/* 5x50 Series */
>	case IWN_DID_5x50_1:
>	case IWN_DID_5x50_2:
>	case IWN_DID_5x50_3:
>	case IWN_DID_5x50_4:
>		sc->limits = &iwn5000_sensitivity_limits;
>		sc->base_params = &iwn5000_base_params;
>		sc->fwname = "iwn5000fw";
>		switch(sc->subdevice_id) {
>			case IWN_SDID_5x50_1:
>			case IWN_SDID_5x50_2:
>			case IWN_SDID_5x50_3:
>			//iwl5350_agn_cfg
>				sc->limits = &iwn5000_sensitivity_limits;
>				sc->base_params = &iwn5000_base_params;
>				sc->fwname = "iwn5000fw";
>				break;
>			case IWN_SDID_5x50_4:
>			case IWN_SDID_5x50_5:
>			case IWN_SDID_5x50_8:
>			case IWN_SDID_5x50_9:
>			case IWN_SDID_5x50_10:
>			case IWN_SDID_5x50_11:
>			//iwl5150_agn_cfg
>			case IWN_SDID_5x50_6:
>			case IWN_SDID_5x50_7:
>			case IWN_SDID_5x50_12:
>			case IWN_SDID_5x50_13:
>			//iwl5150_abg_cfg
>				sc->limits = &iwn5000_sensitivity_limits;
>				sc->fwname = "iwn5150fw";
>				sc->base_params = &iwn_5x50_base_params;
>				break;
>			default:
>				device_printf(sc->sc_dev, "adapter type id : 0x%04x sub id :"
>				    "0x%04x rev %d not supported (subdevice)\n", pid,
>				    sc->subdevice_id,sc->hw_type);
>				return ENOTSUP;
>		}
>		break;
>	default:
>		device_printf(sc->sc_dev, "adapter type id : 0x%04x sub id : 0x%04x"
>		    "rev 0x%08x not supported (device)\n", pid, sc->subdevice_id,
>		     sc->hw_type);
>		return ENOTSUP;
>	}
>	return 0;
>}
>
>static int
>iwn4965_attach(struct iwn_softc *sc, uint16_t pid)
>{
>	struct iwn_ops *ops = &sc->ops;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
>	ops->load_firmware = iwn4965_load_firmware;
>	ops->read_eeprom = iwn4965_read_eeprom;
>	ops->post_alive = iwn4965_post_alive;
>	ops->nic_config = iwn4965_nic_config;
>	ops->update_sched = iwn4965_update_sched;
>	ops->get_temperature = iwn4965_get_temperature;
>	ops->get_rssi = iwn4965_get_rssi;
>	ops->set_txpower = iwn4965_set_txpower;
>	ops->init_gains = iwn4965_init_gains;
>	ops->set_gains = iwn4965_set_gains;
>	ops->add_node = iwn4965_add_node;
>	ops->tx_done = iwn4965_tx_done;
>	ops->ampdu_tx_start = iwn4965_ampdu_tx_start;
>	ops->ampdu_tx_stop = iwn4965_ampdu_tx_stop;
>	sc->ntxqs = IWN4965_NTXQUEUES;
>	sc->firstaggqueue = IWN4965_FIRSTAGGQUEUE;
>	sc->ndmachnls = IWN4965_NDMACHNLS;
>	sc->broadcast_id = IWN4965_ID_BROADCAST;
>	sc->rxonsz = IWN4965_RXONSZ;
>	sc->schedsz = IWN4965_SCHEDSZ;
>	sc->fw_text_maxsz = IWN4965_FW_TEXT_MAXSZ;
>	sc->fw_data_maxsz = IWN4965_FW_DATA_MAXSZ;
>	sc->fwsz = IWN4965_FWSZ;
>	sc->sched_txfact_addr = IWN4965_SCHED_TXFACT;
>	sc->limits = &iwn4965_sensitivity_limits;
>	sc->fwname = "iwn4965fw";
>	/* Override chains masks, ROM is known to be broken. */
>	sc->txchainmask = IWN_ANT_AB;
>	sc->rxchainmask = IWN_ANT_ABC;
>	/* Enable normal btcoex */
>	sc->sc_flags |= IWN_FLAG_BTCOEX;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "%s: end\n",__func__);
>
>	return 0;
>}
>
>static int
>iwn5000_attach(struct iwn_softc *sc, uint16_t pid)
>{
>	struct iwn_ops *ops = &sc->ops;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
>
>	ops->load_firmware = iwn5000_load_firmware;
>	ops->read_eeprom = iwn5000_read_eeprom;
>	ops->post_alive = iwn5000_post_alive;
>	ops->nic_config = iwn5000_nic_config;
>	ops->update_sched = iwn5000_update_sched;
>	ops->get_temperature = iwn5000_get_temperature;
>	ops->get_rssi = iwn5000_get_rssi;
>	ops->set_txpower = iwn5000_set_txpower;
>	ops->init_gains = iwn5000_init_gains;
>	ops->set_gains = iwn5000_set_gains;
>	ops->add_node = iwn5000_add_node;
>	ops->tx_done = iwn5000_tx_done;
>	ops->ampdu_tx_start = iwn5000_ampdu_tx_start;
>	ops->ampdu_tx_stop = iwn5000_ampdu_tx_stop;
>	sc->ntxqs = IWN5000_NTXQUEUES;
>	sc->firstaggqueue = IWN5000_FIRSTAGGQUEUE;
>	sc->ndmachnls = IWN5000_NDMACHNLS;
>	sc->broadcast_id = IWN5000_ID_BROADCAST;
>	sc->rxonsz = IWN5000_RXONSZ;
>	sc->schedsz = IWN5000_SCHEDSZ;
>	sc->fw_text_maxsz = IWN5000_FW_TEXT_MAXSZ;
>	sc->fw_data_maxsz = IWN5000_FW_DATA_MAXSZ;
>	sc->fwsz = IWN5000_FWSZ;
>	sc->sched_txfact_addr = IWN5000_SCHED_TXFACT;
>	sc->reset_noise_gain = IWN5000_PHY_CALIB_RESET_NOISE_GAIN;
>	sc->noise_gain = IWN5000_PHY_CALIB_NOISE_GAIN;
>
>	return 0;
>}
>
>/*
> * Attach the interface to 802.11 radiotap.
> */
>static void
>iwn_radiotap_attach(struct iwn_softc *sc)
>{
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
>	ieee80211_radiotap_attach(&sc->sc_ic,
>	    &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
>		IWN_TX_RADIOTAP_PRESENT,
>	    &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
>		IWN_RX_RADIOTAP_PRESENT);
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end\n", __func__);
>}
>
>static void
>iwn_sysctlattach(struct iwn_softc *sc)
>{
>#ifdef	IWN_DEBUG
>	struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev);
>	struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev);
>
>	SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
>	    "debug", CTLFLAG_RW, &sc->sc_debug, sc->sc_debug,
>		"control debugging printfs");
>#endif
>}
>
>static struct ieee80211vap *
>iwn_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit,
>    enum ieee80211_opmode opmode, int flags,
>    const uint8_t bssid[IEEE80211_ADDR_LEN],
>    const uint8_t mac[IEEE80211_ADDR_LEN])
>{
>	struct iwn_softc *sc = ic->ic_softc;
>	struct iwn_vap *ivp;
>	struct ieee80211vap *vap;
>
>	if (!TAILQ_EMPTY(&ic->ic_vaps))		/* only one at a time */
>		return NULL;
>
>	ivp = malloc(sizeof(struct iwn_vap), M_80211_VAP, M_WAITOK | M_ZERO);
>	vap = &ivp->iv_vap;
>	ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid);
>	ivp->ctx = IWN_RXON_BSS_CTX;
>	vap->iv_bmissthreshold = 10;		/* override default */
>	/* Override with driver methods. */
>	ivp->iv_newstate = vap->iv_newstate;
>	vap->iv_newstate = iwn_newstate;
>	sc->ivap[IWN_RXON_BSS_CTX] = vap;
>
>	ieee80211_ratectl_init(vap);
>	/* Complete setup. */
>	ieee80211_vap_attach(vap, iwn_media_change, ieee80211_media_status,
>	    mac);
>	ic->ic_opmode = opmode;
>	return vap;
>}
>
>static void
>iwn_vap_delete(struct ieee80211vap *vap)
>{
>	struct iwn_vap *ivp = IWN_VAP(vap);
>
>	ieee80211_ratectl_deinit(vap);
>	ieee80211_vap_detach(vap);
>	free(ivp, M_80211_VAP);
>}
>
>static void
>iwn_xmit_queue_drain(struct iwn_softc *sc)
>{
>	struct mbuf *m;
>	struct ieee80211_node *ni;
>
>	IWN_LOCK_ASSERT(sc);
>	while ((m = mbufq_dequeue(&sc->sc_xmit_queue)) != NULL) {
>		ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
>		ieee80211_free_node(ni);
>		m_freem(m);
>	}
>}
>
>static int
>iwn_xmit_queue_enqueue(struct iwn_softc *sc, struct mbuf *m)
>{
>
>	IWN_LOCK_ASSERT(sc);
>	return (mbufq_enqueue(&sc->sc_xmit_queue, m));
>}
>
>static int
>iwn_detach(device_t dev)
>{
>	struct iwn_softc *sc = device_get_softc(dev);
>	int qid;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
>
>	if (sc->sc_ic.ic_softc != NULL) {
>		/* Free the mbuf queue and node references */
>		IWN_LOCK(sc);
>		iwn_xmit_queue_drain(sc);
>		IWN_UNLOCK(sc);
>
>		ieee80211_draintask(&sc->sc_ic, &sc->sc_radioon_task);
>		ieee80211_draintask(&sc->sc_ic, &sc->sc_radiooff_task);
>		iwn_stop(sc);
>
>		taskqueue_drain_all(sc->sc_tq);
>		taskqueue_free(sc->sc_tq);
>
>		callout_drain(&sc->watchdog_to);
>		callout_drain(&sc->scan_timeout);
>		callout_drain(&sc->calib_to);
>		ieee80211_ifdetach(&sc->sc_ic);
>	}
>
>	/* Uninstall interrupt handler. */
>	if (sc->irq != NULL) {
>		bus_teardown_intr(dev, sc->irq, sc->sc_ih);
>		bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq),
>		    sc->irq);
>		pci_release_msi(dev);
>	}
>
>	/* Free DMA resources. */
>	iwn_free_rx_ring(sc, &sc->rxq);
>	for (qid = 0; qid < sc->ntxqs; qid++)
>		iwn_free_tx_ring(sc, &sc->txq[qid]);
>	iwn_free_sched(sc);
>	iwn_free_kw(sc);
>	if (sc->ict != NULL)
>		iwn_free_ict(sc);
>	iwn_free_fwmem(sc);
>
>	if (sc->mem != NULL)
>		bus_release_resource(dev, SYS_RES_MEMORY,
>		    rman_get_rid(sc->mem), sc->mem);
>
>	if (sc->sc_cdev) {
>		destroy_dev(sc->sc_cdev);
>		sc->sc_cdev = NULL;
>	}
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n", __func__);
>	IWN_LOCK_DESTROY(sc);
>	return 0;
>}
>
>static int
>iwn_shutdown(device_t dev)
>{
>	struct iwn_softc *sc = device_get_softc(dev);
>
>	iwn_stop(sc);
>	return 0;
>}
>
>static int
>iwn_suspend(device_t dev)
>{
>	struct iwn_softc *sc = device_get_softc(dev);
>
>	ieee80211_suspend_all(&sc->sc_ic);
>	return 0;
>}
>
>static int
>iwn_resume(device_t dev)
>{
>	struct iwn_softc *sc = device_get_softc(dev);
>
>	/* Clear device-specific "PCI retry timeout" register (41h). */
>	pci_write_config(dev, 0x41, 0, 1);
>
>	ieee80211_resume_all(&sc->sc_ic);
>	return 0;
>}
>
>static int
>iwn_nic_lock(struct iwn_softc *sc)
>{
>	int ntries;
>
>	/* Request exclusive access to NIC. */
>	IWN_SETBITS(sc, IWN_GP_CNTRL, IWN_GP_CNTRL_MAC_ACCESS_REQ);
>
>	/* Spin until we actually get the lock. */
>	for (ntries = 0; ntries < 1000; ntries++) {
>		if ((IWN_READ(sc, IWN_GP_CNTRL) &
>		     (IWN_GP_CNTRL_MAC_ACCESS_ENA | IWN_GP_CNTRL_SLEEP)) ==
>		    IWN_GP_CNTRL_MAC_ACCESS_ENA)
>			return 0;
>		DELAY(10);
>	}
>	return ETIMEDOUT;
>}
>
>static __inline void
>iwn_nic_unlock(struct iwn_softc *sc)
>{
>	IWN_CLRBITS(sc, IWN_GP_CNTRL, IWN_GP_CNTRL_MAC_ACCESS_REQ);
>}
>
>static __inline uint32_t
>iwn_prph_read(struct iwn_softc *sc, uint32_t addr)
>{
>	IWN_WRITE(sc, IWN_PRPH_RADDR, IWN_PRPH_DWORD | addr);
>	IWN_BARRIER_READ_WRITE(sc);
>	return IWN_READ(sc, IWN_PRPH_RDATA);
>}
>
>static __inline void
>iwn_prph_write(struct iwn_softc *sc, uint32_t addr, uint32_t data)
>{
>	IWN_WRITE(sc, IWN_PRPH_WADDR, IWN_PRPH_DWORD | addr);
>	IWN_BARRIER_WRITE(sc);
>	IWN_WRITE(sc, IWN_PRPH_WDATA, data);
>}
>
>static __inline void
>iwn_prph_setbits(struct iwn_softc *sc, uint32_t addr, uint32_t mask)
>{
>	iwn_prph_write(sc, addr, iwn_prph_read(sc, addr) | mask);
>}
>
>static __inline void
>iwn_prph_clrbits(struct iwn_softc *sc, uint32_t addr, uint32_t mask)
>{
>	iwn_prph_write(sc, addr, iwn_prph_read(sc, addr) & ~mask);
>}
>
>static __inline void
>iwn_prph_write_region_4(struct iwn_softc *sc, uint32_t addr,
>    const uint32_t *data, int count)
>{
>	for (; count > 0; count--, data++, addr += 4)
>		iwn_prph_write(sc, addr, *data);
>}
>
>static __inline uint32_t
>iwn_mem_read(struct iwn_softc *sc, uint32_t addr)
>{
>	IWN_WRITE(sc, IWN_MEM_RADDR, addr);
>	IWN_BARRIER_READ_WRITE(sc);
>	return IWN_READ(sc, IWN_MEM_RDATA);
>}
>
>static __inline void
>iwn_mem_write(struct iwn_softc *sc, uint32_t addr, uint32_t data)
>{
>	IWN_WRITE(sc, IWN_MEM_WADDR, addr);
>	IWN_BARRIER_WRITE(sc);
>	IWN_WRITE(sc, IWN_MEM_WDATA, data);
>}
>
>static __inline void
>iwn_mem_write_2(struct iwn_softc *sc, uint32_t addr, uint16_t data)
>{
>	uint32_t tmp;
>
>	tmp = iwn_mem_read(sc, addr & ~3);
>	if (addr & 3)
>		tmp = (tmp & 0x0000ffff) | data << 16;
>	else
>		tmp = (tmp & 0xffff0000) | data;
>	iwn_mem_write(sc, addr & ~3, tmp);
>}
>
>static __inline void
>iwn_mem_read_region_4(struct iwn_softc *sc, uint32_t addr, uint32_t *data,
>    int count)
>{
>	for (; count > 0; count--, addr += 4)
>		*data++ = iwn_mem_read(sc, addr);
>}
>
>static __inline void
>iwn_mem_set_region_4(struct iwn_softc *sc, uint32_t addr, uint32_t val,
>    int count)
>{
>	for (; count > 0; count--, addr += 4)
>		iwn_mem_write(sc, addr, val);
>}
>
>static int
>iwn_eeprom_lock(struct iwn_softc *sc)
>{
>	int i, ntries;
>
>	for (i = 0; i < 100; i++) {
>		/* Request exclusive access to EEPROM. */
>		IWN_SETBITS(sc, IWN_HW_IF_CONFIG,
>		    IWN_HW_IF_CONFIG_EEPROM_LOCKED);
>
>		/* Spin until we actually get the lock. */
>		for (ntries = 0; ntries < 100; ntries++) {
>			if (IWN_READ(sc, IWN_HW_IF_CONFIG) &
>			    IWN_HW_IF_CONFIG_EEPROM_LOCKED)
>				return 0;
>			DELAY(10);
>		}
>	}
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end timeout\n", __func__);
>	return ETIMEDOUT;
>}
>
>static __inline void
>iwn_eeprom_unlock(struct iwn_softc *sc)
>{
>	IWN_CLRBITS(sc, IWN_HW_IF_CONFIG, IWN_HW_IF_CONFIG_EEPROM_LOCKED);
>}
>
>/*
> * Initialize access by host to One Time Programmable ROM.
> * NB: This kind of ROM can be found on 1000 or 6000 Series only.
> */
>static int
>iwn_init_otprom(struct iwn_softc *sc)
>{
>	uint16_t prev, base, next;
>	int count, error;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
>
>	/* Wait for clock stabilization before accessing prph. */
>	if ((error = iwn_clock_wait(sc)) != 0)
>		return error;
>
>	if ((error = iwn_nic_lock(sc)) != 0)
>		return error;
>	iwn_prph_setbits(sc, IWN_APMG_PS, IWN_APMG_PS_RESET_REQ);
>	DELAY(5);
>	iwn_prph_clrbits(sc, IWN_APMG_PS, IWN_APMG_PS_RESET_REQ);
>	iwn_nic_unlock(sc);
>
>	/* Set auto clock gate disable bit for HW with OTP shadow RAM. */
>	if (sc->base_params->shadow_ram_support) {
>		IWN_SETBITS(sc, IWN_DBG_LINK_PWR_MGMT,
>		    IWN_RESET_LINK_PWR_MGMT_DIS);
>	}
>	IWN_CLRBITS(sc, IWN_EEPROM_GP, IWN_EEPROM_GP_IF_OWNER);
>	/* Clear ECC status. */
>	IWN_SETBITS(sc, IWN_OTP_GP,
>	    IWN_OTP_GP_ECC_CORR_STTS | IWN_OTP_GP_ECC_UNCORR_STTS);
>
>	/*
>	 * Find the block before last block (contains the EEPROM image)
>	 * for HW without OTP shadow RAM.
>	 */
>	if (! sc->base_params->shadow_ram_support) {
>		/* Switch to absolute addressing mode. */
>		IWN_CLRBITS(sc, IWN_OTP_GP, IWN_OTP_GP_RELATIVE_ACCESS);
>		base = prev = 0;
>		for (count = 0; count < sc->base_params->max_ll_items;
>		    count++) {
>			error = iwn_read_prom_data(sc, base, &next, 2);
>			if (error != 0)
>				return error;
>			if (next == 0)	/* End of linked-list. */
>				break;
>			prev = base;
>			base = le16toh(next);
>		}
>		if (count == 0 || count == sc->base_params->max_ll_items)
>			return EIO;
>		/* Skip "next" word. */
>		sc->prom_base = prev + 1;
>	}
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end\n", __func__);
>
>	return 0;
>}
>
>static int
>iwn_read_prom_data(struct iwn_softc *sc, uint32_t addr, void *data, int count)
>{
>	uint8_t *out = data;
>	uint32_t val, tmp;
>	int ntries;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
>
>	addr += sc->prom_base;
>	for (; count > 0; count -= 2, addr++) {
>		IWN_WRITE(sc, IWN_EEPROM, addr << 2);
>		for (ntries = 0; ntries < 10; ntries++) {
>			val = IWN_READ(sc, IWN_EEPROM);
>			if (val & IWN_EEPROM_READ_VALID)
>				break;
>			DELAY(5);
>		}
>		if (ntries == 10) {
>			device_printf(sc->sc_dev,
>			    "timeout reading ROM at 0x%x\n", addr);
>			return ETIMEDOUT;
>		}
>		if (sc->sc_flags & IWN_FLAG_HAS_OTPROM) {
>			/* OTPROM, check for ECC errors. */
>			tmp = IWN_READ(sc, IWN_OTP_GP);
>			if (tmp & IWN_OTP_GP_ECC_UNCORR_STTS) {
>				device_printf(sc->sc_dev,
>				    "OTPROM ECC error at 0x%x\n", addr);
>				return EIO;
>			}
>			if (tmp & IWN_OTP_GP_ECC_CORR_STTS) {
>				/* Correctable ECC error, clear bit. */
>				IWN_SETBITS(sc, IWN_OTP_GP,
>				    IWN_OTP_GP_ECC_CORR_STTS);
>			}
>		}
>		*out++ = val >> 16;
>		if (count > 1)
>			*out++ = val >> 24;
>	}
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end\n", __func__);
>
>	return 0;
>}
>
>static void
>iwn_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
>{
>	if (error != 0)
>		return;
>	KASSERT(nsegs == 1, ("too many DMA segments, %d should be 1", nsegs));
>	*(bus_addr_t *)arg = segs[0].ds_addr;
>}
>
>static int
>iwn_dma_contig_alloc(struct iwn_softc *sc, struct iwn_dma_info *dma,
>    void **kvap, bus_size_t size, bus_size_t alignment)
>{
>	int error;
>
>	dma->tag = NULL;
>	dma->size = size;
>
>	error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), alignment,
>	    0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, size,
>	    1, size, 0, NULL, NULL, &dma->tag);
>	if (error != 0)
>		goto fail;
>
>	error = bus_dmamem_alloc(dma->tag, (void **)&dma->vaddr,
>	    BUS_DMA_NOWAIT | BUS_DMA_ZERO | BUS_DMA_COHERENT, &dma->map);
>	if (error != 0)
>		goto fail;
>
>	error = bus_dmamap_load(dma->tag, dma->map, dma->vaddr, size,
>	    iwn_dma_map_addr, &dma->paddr, BUS_DMA_NOWAIT);
>	if (error != 0)
>		goto fail;
>
>	bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE);
>
>	if (kvap != NULL)
>		*kvap = dma->vaddr;
>
>	return 0;
>
>fail:	iwn_dma_contig_free(dma);
>	return error;
>}
>
>static void
>iwn_dma_contig_free(struct iwn_dma_info *dma)
>{
>	if (dma->vaddr != NULL) {
>		bus_dmamap_sync(dma->tag, dma->map,
>		    BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
>		bus_dmamap_unload(dma->tag, dma->map);
>		bus_dmamem_free(dma->tag, dma->vaddr, dma->map);
>		dma->vaddr = NULL;
>	}
>	if (dma->tag != NULL) {
>		bus_dma_tag_destroy(dma->tag);
>		dma->tag = NULL;
>	}
>}
>
>static int
>iwn_alloc_sched(struct iwn_softc *sc)
>{
>	/* TX scheduler rings must be aligned on a 1KB boundary. */
>	return iwn_dma_contig_alloc(sc, &sc->sched_dma, (void **)&sc->sched,
>	    sc->schedsz, 1024);
>}
>
>static void
>iwn_free_sched(struct iwn_softc *sc)
>{
>	iwn_dma_contig_free(&sc->sched_dma);
>}
>
>static int
>iwn_alloc_kw(struct iwn_softc *sc)
>{
>	/* "Keep Warm" page must be aligned on a 4KB boundary. */
>	return iwn_dma_contig_alloc(sc, &sc->kw_dma, NULL, 4096, 4096);
>}
>
>static void
>iwn_free_kw(struct iwn_softc *sc)
>{
>	iwn_dma_contig_free(&sc->kw_dma);
>}
>
>static int
>iwn_alloc_ict(struct iwn_softc *sc)
>{
>	/* ICT table must be aligned on a 4KB boundary. */
>	return iwn_dma_contig_alloc(sc, &sc->ict_dma, (void **)&sc->ict,
>	    IWN_ICT_SIZE, 4096);
>}
>
>static void
>iwn_free_ict(struct iwn_softc *sc)
>{
>	iwn_dma_contig_free(&sc->ict_dma);
>}
>
>static int
>iwn_alloc_fwmem(struct iwn_softc *sc)
>{
>	/* Must be aligned on a 16-byte boundary. */
>	return iwn_dma_contig_alloc(sc, &sc->fw_dma, NULL, sc->fwsz, 16);
>}
>
>static void
>iwn_free_fwmem(struct iwn_softc *sc)
>{
>	iwn_dma_contig_free(&sc->fw_dma);
>}
>
>static int
>iwn_alloc_rx_ring(struct iwn_softc *sc, struct iwn_rx_ring *ring)
>{
>	bus_size_t size;
>	int i, error;
>
>	ring->cur = 0;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
>
>	/* Allocate RX descriptors (256-byte aligned). */
>	size = IWN_RX_RING_COUNT * sizeof (uint32_t);
>	error = iwn_dma_contig_alloc(sc, &ring->desc_dma, (void **)&ring->desc,
>	    size, 256);
>	if (error != 0) {
>		device_printf(sc->sc_dev,
>		    "%s: could not allocate RX ring DMA memory, error %d\n",
>		    __func__, error);
>		goto fail;
>	}
>
>	/* Allocate RX status area (16-byte aligned). */
>	error = iwn_dma_contig_alloc(sc, &ring->stat_dma, (void **)&ring->stat,
>	    sizeof (struct iwn_rx_status), 16);
>	if (error != 0) {
>		device_printf(sc->sc_dev,
>		    "%s: could not allocate RX status DMA memory, error %d\n",
>		    __func__, error);
>		goto fail;
>	}
>
>	/* Create RX buffer DMA tag. */
>	error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
>	    BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
>	    IWN_RBUF_SIZE, 1, IWN_RBUF_SIZE, 0, NULL, NULL, &ring->data_dmat);
>	if (error != 0) {
>		device_printf(sc->sc_dev,
>		    "%s: could not create RX buf DMA tag, error %d\n",
>		    __func__, error);
>		goto fail;
>	}
>
>	/*
>	 * Allocate and map RX buffers.
>	 */
>	for (i = 0; i < IWN_RX_RING_COUNT; i++) {
>		struct iwn_rx_data *data = &ring->data[i];
>		bus_addr_t paddr;
>
>		error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
>		if (error != 0) {
>			device_printf(sc->sc_dev,
>			    "%s: could not create RX buf DMA map, error %d\n",
>			    __func__, error);
>			goto fail;
>		}
>
>		data->m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR,
>		    IWN_RBUF_SIZE);
>		if (data->m == NULL) {
>			device_printf(sc->sc_dev,
>			    "%s: could not allocate RX mbuf\n", __func__);
>			error = ENOBUFS;
>			goto fail;
>		}
>
>		error = bus_dmamap_load(ring->data_dmat, data->map,
>		    mtod(data->m, void *), IWN_RBUF_SIZE, iwn_dma_map_addr,
>		    &paddr, BUS_DMA_NOWAIT);
>		if (error != 0 && error != EFBIG) {
>			device_printf(sc->sc_dev,
>			    "%s: can't map mbuf, error %d\n", __func__,
>			    error);
>			goto fail;
>		}
>
>		/* Set physical address of RX buffer (256-byte aligned). */
>		ring->desc[i] = htole32(paddr >> 8);
>	}
>
>	bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
>	    BUS_DMASYNC_PREWRITE);
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__);
>
>	return 0;
>
>fail:	iwn_free_rx_ring(sc, ring);
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end in error\n",__func__);
>
>	return error;
>}
>
>static void
>iwn_reset_rx_ring(struct iwn_softc *sc, struct iwn_rx_ring *ring)
>{
>	int ntries;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
>
>	if (iwn_nic_lock(sc) == 0) {
>		IWN_WRITE(sc, IWN_FH_RX_CONFIG, 0);
>		for (ntries = 0; ntries < 1000; ntries++) {
>			if (IWN_READ(sc, IWN_FH_RX_STATUS) &
>			    IWN_FH_RX_STATUS_IDLE)
>				break;
>			DELAY(10);
>		}
>		iwn_nic_unlock(sc);
>	}
>	ring->cur = 0;
>	sc->last_rx_valid = 0;
>}
>
>static void
>iwn_free_rx_ring(struct iwn_softc *sc, struct iwn_rx_ring *ring)
>{
>	int i;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s \n", __func__);
>
>	iwn_dma_contig_free(&ring->desc_dma);
>	iwn_dma_contig_free(&ring->stat_dma);
>
>	for (i = 0; i < IWN_RX_RING_COUNT; i++) {
>		struct iwn_rx_data *data = &ring->data[i];
>
>		if (data->m != NULL) {
>			bus_dmamap_sync(ring->data_dmat, data->map,
>			    BUS_DMASYNC_POSTREAD);
>			bus_dmamap_unload(ring->data_dmat, data->map);
>			m_freem(data->m);
>			data->m = NULL;
>		}
>		if (data->map != NULL)
>			bus_dmamap_destroy(ring->data_dmat, data->map);
>	}
>	if (ring->data_dmat != NULL) {
>		bus_dma_tag_destroy(ring->data_dmat);
>		ring->data_dmat = NULL;
>	}
>}
>
>static int
>iwn_alloc_tx_ring(struct iwn_softc *sc, struct iwn_tx_ring *ring, int qid)
>{
>	bus_addr_t paddr;
>	bus_size_t size;
>	int i, error;
>
>	ring->qid = qid;
>	ring->queued = 0;
>	ring->cur = 0;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
>
>	/* Allocate TX descriptors (256-byte aligned). */
>	size = IWN_TX_RING_COUNT * sizeof (struct iwn_tx_desc);
>	error = iwn_dma_contig_alloc(sc, &ring->desc_dma, (void **)&ring->desc,
>	    size, 256);
>	if (error != 0) {
>		device_printf(sc->sc_dev,
>		    "%s: could not allocate TX ring DMA memory, error %d\n",
>		    __func__, error);
>		goto fail;
>	}
>
>	size = IWN_TX_RING_COUNT * sizeof (struct iwn_tx_cmd);
>	error = iwn_dma_contig_alloc(sc, &ring->cmd_dma, (void **)&ring->cmd,
>	    size, 4);
>	if (error != 0) {
>		device_printf(sc->sc_dev,
>		    "%s: could not allocate TX cmd DMA memory, error %d\n",
>		    __func__, error);
>		goto fail;
>	}
>
>	error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
>	    BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES,
>	    IWN_MAX_SCATTER - 1, MCLBYTES, 0, NULL, NULL, &ring->data_dmat);
>	if (error != 0) {
>		device_printf(sc->sc_dev,
>		    "%s: could not create TX buf DMA tag, error %d\n",
>		    __func__, error);
>		goto fail;
>	}
>
>	paddr = ring->cmd_dma.paddr;
>	for (i = 0; i < IWN_TX_RING_COUNT; i++) {
>		struct iwn_tx_data *data = &ring->data[i];
>
>		data->cmd_paddr = paddr;
>		data->scratch_paddr = paddr + 12;
>		paddr += sizeof (struct iwn_tx_cmd);
>
>		error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
>		if (error != 0) {
>			device_printf(sc->sc_dev,
>			    "%s: could not create TX buf DMA map, error %d\n",
>			    __func__, error);
>			goto fail;
>		}
>	}
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end\n", __func__);
>
>	return 0;
>
>fail:	iwn_free_tx_ring(sc, ring);
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end in error\n", __func__);
>	return error;
>}
>
>static void
>iwn_reset_tx_ring(struct iwn_softc *sc, struct iwn_tx_ring *ring)
>{
>	int i;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->doing %s \n", __func__);
>
>	for (i = 0; i < IWN_TX_RING_COUNT; i++) {
>		struct iwn_tx_data *data = &ring->data[i];
>
>		if (data->m != NULL) {
>			bus_dmamap_sync(ring->data_dmat, data->map,
>			    BUS_DMASYNC_POSTWRITE);
>			bus_dmamap_unload(ring->data_dmat, data->map);
>			m_freem(data->m);
>			data->m = NULL;
>		}
>		if (data->ni != NULL) {
>			ieee80211_free_node(data->ni);
>			data->ni = NULL;
>		}
>	}
>	/* Clear TX descriptors. */
>	memset(ring->desc, 0, ring->desc_dma.size);
>	bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
>	    BUS_DMASYNC_PREWRITE);
>	sc->qfullmsk &= ~(1 << ring->qid);
>	ring->queued = 0;
>	ring->cur = 0;
>}
>
>static void
>iwn_free_tx_ring(struct iwn_softc *sc, struct iwn_tx_ring *ring)
>{
>	int i;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s \n", __func__);
>
>	iwn_dma_contig_free(&ring->desc_dma);
>	iwn_dma_contig_free(&ring->cmd_dma);
>
>	for (i = 0; i < IWN_TX_RING_COUNT; i++) {
>		struct iwn_tx_data *data = &ring->data[i];
>
>		if (data->m != NULL) {
>			bus_dmamap_sync(ring->data_dmat, data->map,
>			    BUS_DMASYNC_POSTWRITE);
>			bus_dmamap_unload(ring->data_dmat, data->map);
>			m_freem(data->m);
>		}
>		if (data->map != NULL)
>			bus_dmamap_destroy(ring->data_dmat, data->map);
>	}
>	if (ring->data_dmat != NULL) {
>		bus_dma_tag_destroy(ring->data_dmat);
>		ring->data_dmat = NULL;
>	}
>}
>
>static void
>iwn5000_ict_reset(struct iwn_softc *sc)
>{
>	/* Disable interrupts. */
>	IWN_WRITE(sc, IWN_INT_MASK, 0);
>
>	/* Reset ICT table. */
>	memset(sc->ict, 0, IWN_ICT_SIZE);
>	sc->ict_cur = 0;
>
>	/* Set physical address of ICT table (4KB aligned). */
>	DPRINTF(sc, IWN_DEBUG_RESET, "%s: enabling ICT\n", __func__);
>	IWN_WRITE(sc, IWN_DRAM_INT_TBL, IWN_DRAM_INT_TBL_ENABLE |
>	    IWN_DRAM_INT_TBL_WRAP_CHECK | sc->ict_dma.paddr >> 12);
>
>	/* Enable periodic RX interrupt. */
>	sc->int_mask |= IWN_INT_RX_PERIODIC;
>	/* Switch to ICT interrupt mode in driver. */
>	sc->sc_flags |= IWN_FLAG_USE_ICT;
>
>	/* Re-enable interrupts. */
>	IWN_WRITE(sc, IWN_INT, 0xffffffff);
>	IWN_WRITE(sc, IWN_INT_MASK, sc->int_mask);
>}
>
>static int
>iwn_read_eeprom(struct iwn_softc *sc, uint8_t macaddr[IEEE80211_ADDR_LEN])
>{
>	struct iwn_ops *ops = &sc->ops;
>	uint16_t val;
>	int error;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
>
>	/* Check whether adapter has an EEPROM or an OTPROM. */
>	if (sc->hw_type >= IWN_HW_REV_TYPE_1000 &&
>	    (IWN_READ(sc, IWN_OTP_GP) & IWN_OTP_GP_DEV_SEL_OTP))
>		sc->sc_flags |= IWN_FLAG_HAS_OTPROM;
>	DPRINTF(sc, IWN_DEBUG_RESET, "%s found\n",
>	    (sc->sc_flags & IWN_FLAG_HAS_OTPROM) ? "OTPROM" : "EEPROM");
>
>	/* Adapter has to be powered on for EEPROM access to work. */
>	if ((error = iwn_apm_init(sc)) != 0) {
>		device_printf(sc->sc_dev,
>		    "%s: could not power ON adapter, error %d\n", __func__,
>		    error);
>		return error;
>	}
>
>	if ((IWN_READ(sc, IWN_EEPROM_GP) & 0x7) == 0) {
>		device_printf(sc->sc_dev, "%s: bad ROM signature\n", __func__);
>		return EIO;
>	}
>	if ((error = iwn_eeprom_lock(sc)) != 0) {
>		device_printf(sc->sc_dev, "%s: could not lock ROM, error %d\n",
>		    __func__, error);
>		return error;
>	}
>	if (sc->sc_flags & IWN_FLAG_HAS_OTPROM) {
>		if ((error = iwn_init_otprom(sc)) != 0) {
>			device_printf(sc->sc_dev,
>			    "%s: could not initialize OTPROM, error %d\n",
>			    __func__, error);
>			return error;
>		}
>	}
>
>	iwn_read_prom_data(sc, IWN_EEPROM_SKU_CAP, &val, 2);
>	DPRINTF(sc, IWN_DEBUG_RESET, "SKU capabilities=0x%04x\n", le16toh(val));
>	/* Check if HT support is bonded out. */
>	if (val & htole16(IWN_EEPROM_SKU_CAP_11N))
>		sc->sc_flags |= IWN_FLAG_HAS_11N;
>
>	iwn_read_prom_data(sc, IWN_EEPROM_RFCFG, &val, 2);
>	sc->rfcfg = le16toh(val);
>	DPRINTF(sc, IWN_DEBUG_RESET, "radio config=0x%04x\n", sc->rfcfg);
>	/* Read Tx/Rx chains from ROM unless it's known to be broken. */
>	if (sc->txchainmask == 0)
>		sc->txchainmask = IWN_RFCFG_TXANTMSK(sc->rfcfg);
>	if (sc->rxchainmask == 0)
>		sc->rxchainmask = IWN_RFCFG_RXANTMSK(sc->rfcfg);
>
>	/* Read MAC address. */
>	iwn_read_prom_data(sc, IWN_EEPROM_MAC, macaddr, 6);
>
>	/* Read adapter-specific information from EEPROM. */
>	ops->read_eeprom(sc);
>
>	iwn_apm_stop(sc);	/* Power OFF adapter. */
>
>	iwn_eeprom_unlock(sc);
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end\n", __func__);
>
>	return 0;
>}
>
>static void
>iwn4965_read_eeprom(struct iwn_softc *sc)
>{
>	uint32_t addr;
>	uint16_t val;
>	int i;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
>
>	/* Read regulatory domain (4 ASCII characters). */
>	iwn_read_prom_data(sc, IWN4965_EEPROM_DOMAIN, sc->eeprom_domain, 4);
>
>	/* Read the list of authorized channels (20MHz & 40MHz). */
>	for (i = 0; i < IWN_NBANDS - 1; i++) {
>		addr = iwn4965_regulatory_bands[i];
>		iwn_read_eeprom_channels(sc, i, addr);
>	}
>
>	/* Read maximum allowed TX power for 2GHz and 5GHz bands. */
>	iwn_read_prom_data(sc, IWN4965_EEPROM_MAXPOW, &val, 2);
>	sc->maxpwr2GHz = val & 0xff;
>	sc->maxpwr5GHz = val >> 8;
>	/* Check that EEPROM values are within valid range. */
>	if (sc->maxpwr5GHz < 20 || sc->maxpwr5GHz > 50)
>		sc->maxpwr5GHz = 38;
>	if (sc->maxpwr2GHz < 20 || sc->maxpwr2GHz > 50)
>		sc->maxpwr2GHz = 38;
>	DPRINTF(sc, IWN_DEBUG_RESET, "maxpwr 2GHz=%d 5GHz=%d\n",
>	    sc->maxpwr2GHz, sc->maxpwr5GHz);
>
>	/* Read samples for each TX power group. */
>	iwn_read_prom_data(sc, IWN4965_EEPROM_BANDS, sc->bands,
>	    sizeof sc->bands);
>
>	/* Read voltage at which samples were taken. */
>	iwn_read_prom_data(sc, IWN4965_EEPROM_VOLTAGE, &val, 2);
>	sc->eeprom_voltage = (int16_t)le16toh(val);
>	DPRINTF(sc, IWN_DEBUG_RESET, "voltage=%d (in 0.3V)\n",
>	    sc->eeprom_voltage);
>
>#ifdef IWN_DEBUG
>	/* Print samples. */
>	if (sc->sc_debug & IWN_DEBUG_ANY) {
>		for (i = 0; i < IWN_NBANDS - 1; i++)
>			iwn4965_print_power_group(sc, i);
>	}
>#endif
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end\n", __func__);
>}
>
>#ifdef IWN_DEBUG
>static void
>iwn4965_print_power_group(struct iwn_softc *sc, int i)
>{
>	struct iwn4965_eeprom_band *band = &sc->bands[i];
>	struct iwn4965_eeprom_chan_samples *chans = band->chans;
>	int j, c;
>
>	printf("===band %d===\n", i);
>	printf("chan lo=%d, chan hi=%d\n", band->lo, band->hi);
>	printf("chan1 num=%d\n", chans[0].num);
>	for (c = 0; c < 2; c++) {
>		for (j = 0; j < IWN_NSAMPLES; j++) {
>			printf("chain %d, sample %d: temp=%d gain=%d "
>			    "power=%d pa_det=%d\n", c, j,
>			    chans[0].samples[c][j].temp,
>			    chans[0].samples[c][j].gain,
>			    chans[0].samples[c][j].power,
>			    chans[0].samples[c][j].pa_det);
>		}
>	}
>	printf("chan2 num=%d\n", chans[1].num);
>	for (c = 0; c < 2; c++) {
>		for (j = 0; j < IWN_NSAMPLES; j++) {
>			printf("chain %d, sample %d: temp=%d gain=%d "
>			    "power=%d pa_det=%d\n", c, j,
>			    chans[1].samples[c][j].temp,
>			    chans[1].samples[c][j].gain,
>			    chans[1].samples[c][j].power,
>			    chans[1].samples[c][j].pa_det);
>		}
>	}
>}
>#endif
>
>static void
>iwn5000_read_eeprom(struct iwn_softc *sc)
>{
>	struct iwn5000_eeprom_calib_hdr hdr;
>	int32_t volt;
>	uint32_t base, addr;
>	uint16_t val;
>	int i;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
>
>	/* Read regulatory domain (4 ASCII characters). */
>	iwn_read_prom_data(sc, IWN5000_EEPROM_REG, &val, 2);
>	base = le16toh(val);
>	iwn_read_prom_data(sc, base + IWN5000_EEPROM_DOMAIN,
>	    sc->eeprom_domain, 4);
>
>	/* Read the list of authorized channels (20MHz & 40MHz). */
>	for (i = 0; i < IWN_NBANDS - 1; i++) {
>		addr =  base + sc->base_params->regulatory_bands[i];
>		iwn_read_eeprom_channels(sc, i, addr);
>	}
>
>	/* Read enhanced TX power information for 6000 Series. */
>	if (sc->base_params->enhanced_TX_power)
>		iwn_read_eeprom_enhinfo(sc);
>
>	iwn_read_prom_data(sc, IWN5000_EEPROM_CAL, &val, 2);
>	base = le16toh(val);
>	iwn_read_prom_data(sc, base, &hdr, sizeof hdr);
>	DPRINTF(sc, IWN_DEBUG_CALIBRATE,
>	    "%s: calib version=%u pa type=%u voltage=%u\n", __func__,
>	    hdr.version, hdr.pa_type, le16toh(hdr.volt));
>	sc->calib_ver = hdr.version;
>
>	if (sc->base_params->calib_need & IWN_FLG_NEED_PHY_CALIB_TEMP_OFFSETv2) {
>		sc->eeprom_voltage = le16toh(hdr.volt);
>		iwn_read_prom_data(sc, base + IWN5000_EEPROM_TEMP, &val, 2);
>		sc->eeprom_temp_high=le16toh(val);
>		iwn_read_prom_data(sc, base + IWN5000_EEPROM_VOLT, &val, 2);
>		sc->eeprom_temp = le16toh(val);
>	}
>
>	if (sc->hw_type == IWN_HW_REV_TYPE_5150) {
>		/* Compute temperature offset. */
>		iwn_read_prom_data(sc, base + IWN5000_EEPROM_TEMP, &val, 2);
>		sc->eeprom_temp = le16toh(val);
>		iwn_read_prom_data(sc, base + IWN5000_EEPROM_VOLT, &val, 2);
>		volt = le16toh(val);
>		sc->temp_off = sc->eeprom_temp - (volt / -5);
>		DPRINTF(sc, IWN_DEBUG_CALIBRATE, "temp=%d volt=%d offset=%dK\n",
>		    sc->eeprom_temp, volt, sc->temp_off);
>	} else {
>		/* Read crystal calibration. */
>		iwn_read_prom_data(sc, base + IWN5000_EEPROM_CRYSTAL,
>		    &sc->eeprom_crystal, sizeof (uint32_t));
>		DPRINTF(sc, IWN_DEBUG_CALIBRATE, "crystal calibration 0x%08x\n",
>		    le32toh(sc->eeprom_crystal));
>	}
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end\n", __func__);
>
>}
>
>/*
> * Translate EEPROM flags to net80211.
> */
>static uint32_t
>iwn_eeprom_channel_flags(struct iwn_eeprom_chan *channel)
>{
>	uint32_t nflags;
>
>	nflags = 0;
>	if ((channel->flags & IWN_EEPROM_CHAN_ACTIVE) == 0)
>		nflags |= IEEE80211_CHAN_PASSIVE;
>	if ((channel->flags & IWN_EEPROM_CHAN_IBSS) == 0)
>		nflags |= IEEE80211_CHAN_NOADHOC;
>	if (channel->flags & IWN_EEPROM_CHAN_RADAR) {
>		nflags |= IEEE80211_CHAN_DFS;
>		/* XXX apparently IBSS may still be marked */
>		nflags |= IEEE80211_CHAN_NOADHOC;
>	}
>
>	return nflags;
>}
>
>static void
>iwn_read_eeprom_band(struct iwn_softc *sc, int n, int maxchans, int *nchans,
>    struct ieee80211_channel chans[])
>{
>	struct iwn_eeprom_chan *channels = sc->eeprom_channels[n];
>	const struct iwn_chan_band *band = &iwn_bands[n];
>	uint8_t bands[IEEE80211_MODE_BYTES];
>	uint8_t chan;
>	int i, error, nflags;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
>
>	memset(bands, 0, sizeof(bands));
>	if (n == 0) {
>		setbit(bands, IEEE80211_MODE_11B);
>		setbit(bands, IEEE80211_MODE_11G);
>		if (sc->sc_flags & IWN_FLAG_HAS_11N)
>			setbit(bands, IEEE80211_MODE_11NG);
>	} else {
>		setbit(bands, IEEE80211_MODE_11A);
>		if (sc->sc_flags & IWN_FLAG_HAS_11N)
>			setbit(bands, IEEE80211_MODE_11NA);
>	}
>
>	for (i = 0; i < band->nchan; i++) {
>		if (!(channels[i].flags & IWN_EEPROM_CHAN_VALID)) {
>			DPRINTF(sc, IWN_DEBUG_RESET,
>			    "skip chan %d flags 0x%x maxpwr %d\n",
>			    band->chan[i], channels[i].flags,
>			    channels[i].maxpwr);
>			continue;
>		}
>
>		chan = band->chan[i];
>		nflags = iwn_eeprom_channel_flags(&channels[i]);
>		error = ieee80211_add_channel(chans, maxchans, nchans,
>		    chan, 0, channels[i].maxpwr, nflags, bands);
>		if (error != 0)
>			break;
>
>		/* Save maximum allowed TX power for this channel. */
>		/* XXX wrong */
>		sc->maxpwr[chan] = channels[i].maxpwr;
>
>		DPRINTF(sc, IWN_DEBUG_RESET,
>		    "add chan %d flags 0x%x maxpwr %d\n", chan,
>		    channels[i].flags, channels[i].maxpwr);
>	}
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end\n", __func__);
>
>}
>
>static void
>iwn_read_eeprom_ht40(struct iwn_softc *sc, int n, int maxchans, int *nchans,
>    struct ieee80211_channel chans[])
>{
>	struct iwn_eeprom_chan *channels = sc->eeprom_channels[n];
>	const struct iwn_chan_band *band = &iwn_bands[n];
>	uint8_t chan;
>	int i, error, nflags;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s start\n", __func__);
>
>	if (!(sc->sc_flags & IWN_FLAG_HAS_11N)) {
>		DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end no 11n\n", __func__);
>		return;
>	}
>
>	for (i = 0; i < band->nchan; i++) {
>		if (!(channels[i].flags & IWN_EEPROM_CHAN_VALID)) {
>			DPRINTF(sc, IWN_DEBUG_RESET,
>			    "skip chan %d flags 0x%x maxpwr %d\n",
>			    band->chan[i], channels[i].flags,
>			    channels[i].maxpwr);
>			continue;
>		}
>
>		chan = band->chan[i];
>		nflags = iwn_eeprom_channel_flags(&channels[i]);
>		nflags |= (n == 5 ? IEEE80211_CHAN_G : IEEE80211_CHAN_A);
>		error = ieee80211_add_channel_ht40(chans, maxchans, nchans,
>		    chan, channels[i].maxpwr, nflags);
>		switch (error) {
>		case EINVAL:
>			device_printf(sc->sc_dev,
>			    "%s: no entry for channel %d\n", __func__, chan);
>			continue;
>		case ENOENT:
>			DPRINTF(sc, IWN_DEBUG_RESET,
>			    "%s: skip chan %d, extension channel not found\n",
>			    __func__, chan);
>			continue;
>		case ENOBUFS:
>			device_printf(sc->sc_dev,
>			    "%s: channel table is full!\n", __func__);
>			break;
>		case 0:
>			DPRINTF(sc, IWN_DEBUG_RESET,
>			    "add ht40 chan %d flags 0x%x maxpwr %d\n",
>			    chan, channels[i].flags, channels[i].maxpwr);
>			/* FALLTHROUGH */
>		default:
>			break;
>		}
>	}
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end\n", __func__);
>
>}
>
>static void
>iwn_read_eeprom_channels(struct iwn_softc *sc, int n, uint32_t addr)
>{
>	struct ieee80211com *ic = &sc->sc_ic;
>
>	iwn_read_prom_data(sc, addr, &sc->eeprom_channels[n],
>	    iwn_bands[n].nchan * sizeof (struct iwn_eeprom_chan));
>
>	if (n < 5) {
>		iwn_read_eeprom_band(sc, n, IEEE80211_CHAN_MAX, &ic->ic_nchans,
>		    ic->ic_channels);
>	} else {
>		iwn_read_eeprom_ht40(sc, n, IEEE80211_CHAN_MAX, &ic->ic_nchans,
>		    ic->ic_channels);
>	}
>	ieee80211_sort_channels(ic->ic_channels, ic->ic_nchans);
>}
>
>static struct iwn_eeprom_chan *
>iwn_find_eeprom_channel(struct iwn_softc *sc, struct ieee80211_channel *c)
>{
>	int band, chan, i, j;
>
>	if (IEEE80211_IS_CHAN_HT40(c)) {
>		band = IEEE80211_IS_CHAN_5GHZ(c) ? 6 : 5;
>		if (IEEE80211_IS_CHAN_HT40D(c))
>			chan = c->ic_extieee;
>		else
>			chan = c->ic_ieee;
>		for (i = 0; i < iwn_bands[band].nchan; i++) {
>			if (iwn_bands[band].chan[i] == chan)
>				return &sc->eeprom_channels[band][i];
>		}
>	} else {
>		for (j = 0; j < 5; j++) {
>			for (i = 0; i < iwn_bands[j].nchan; i++) {
>				if (iwn_bands[j].chan[i] == c->ic_ieee &&
>				    ((j == 0) ^ IEEE80211_IS_CHAN_A(c)) == 1)
>					return &sc->eeprom_channels[j][i];
>			}
>		}
>	}
>	return NULL;
>}
>
>static void
>iwn_getradiocaps(struct ieee80211com *ic,
>    int maxchans, int *nchans, struct ieee80211_channel chans[])
>{
>	struct iwn_softc *sc = ic->ic_softc;
>	int i;
>
>	/* Parse the list of authorized channels. */
>	for (i = 0; i < 5 && *nchans < maxchans; i++)
>		iwn_read_eeprom_band(sc, i, maxchans, nchans, chans);
>	for (i = 5; i < IWN_NBANDS - 1 && *nchans < maxchans; i++)
>		iwn_read_eeprom_ht40(sc, i, maxchans, nchans, chans);
>}
>
>/*
> * Enforce flags read from EEPROM.
> */
>static int
>iwn_setregdomain(struct ieee80211com *ic, struct ieee80211_regdomain *rd,
>    int nchan, struct ieee80211_channel chans[])
>{
>	struct iwn_softc *sc = ic->ic_softc;
>	int i;
>
>	for (i = 0; i < nchan; i++) {
>		struct ieee80211_channel *c = &chans[i];
>		struct iwn_eeprom_chan *channel;
>
>		channel = iwn_find_eeprom_channel(sc, c);
>		if (channel == NULL) {
>			ic_printf(ic, "%s: invalid channel %u freq %u/0x%x\n",
>			    __func__, c->ic_ieee, c->ic_freq, c->ic_flags);
>			return EINVAL;
>		}
>		c->ic_flags |= iwn_eeprom_channel_flags(channel);
>	}
>
>	return 0;
>}
>
>static void
>iwn_read_eeprom_enhinfo(struct iwn_softc *sc)
>{
>	struct iwn_eeprom_enhinfo enhinfo[35];
>	struct ieee80211com *ic = &sc->sc_ic;
>	struct ieee80211_channel *c;
>	uint16_t val, base;
>	int8_t maxpwr;
>	uint8_t flags;
>	int i, j;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
>
>	iwn_read_prom_data(sc, IWN5000_EEPROM_REG, &val, 2);
>	base = le16toh(val);
>	iwn_read_prom_data(sc, base + IWN6000_EEPROM_ENHINFO,
>	    enhinfo, sizeof enhinfo);
>
>	for (i = 0; i < nitems(enhinfo); i++) {
>		flags = enhinfo[i].flags;
>		if (!(flags & IWN_ENHINFO_VALID))
>			continue;	/* Skip invalid entries. */
>
>		maxpwr = 0;
>		if (sc->txchainmask & IWN_ANT_A)
>			maxpwr = MAX(maxpwr, enhinfo[i].chain[0]);
>		if (sc->txchainmask & IWN_ANT_B)
>			maxpwr = MAX(maxpwr, enhinfo[i].chain[1]);
>		if (sc->txchainmask & IWN_ANT_C)
>			maxpwr = MAX(maxpwr, enhinfo[i].chain[2]);
>		if (sc->ntxchains == 2)
>			maxpwr = MAX(maxpwr, enhinfo[i].mimo2);
>		else if (sc->ntxchains == 3)
>			maxpwr = MAX(maxpwr, enhinfo[i].mimo3);
>
>		for (j = 0; j < ic->ic_nchans; j++) {
>			c = &ic->ic_channels[j];
>			if ((flags & IWN_ENHINFO_5GHZ)) {
>				if (!IEEE80211_IS_CHAN_A(c))
>					continue;
>			} else if ((flags & IWN_ENHINFO_OFDM)) {
>				if (!IEEE80211_IS_CHAN_G(c))
>					continue;
>			} else if (!IEEE80211_IS_CHAN_B(c))
>				continue;
>			if ((flags & IWN_ENHINFO_HT40)) {
>				if (!IEEE80211_IS_CHAN_HT40(c))
>					continue;
>			} else {
>				if (IEEE80211_IS_CHAN_HT40(c))
>					continue;
>			}
>			if (enhinfo[i].chan != 0 &&
>			    enhinfo[i].chan != c->ic_ieee)
>				continue;
>
>			DPRINTF(sc, IWN_DEBUG_RESET,
>			    "channel %d(%x), maxpwr %d\n", c->ic_ieee,
>			    c->ic_flags, maxpwr / 2);
>			c->ic_maxregpower = maxpwr / 2;
>			c->ic_maxpower = maxpwr;
>		}
>	}
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end\n", __func__);
>
>}
>
>static struct ieee80211_node *
>iwn_node_alloc(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN])
>{
>	return malloc(sizeof (struct iwn_node), M_80211_NODE,M_NOWAIT | M_ZERO);
>}
>
>static __inline int
>rate2plcp(int rate)
>{
>	switch (rate & 0xff) {
>	case 12:	return 0xd;
>	case 18:	return 0xf;
>	case 24:	return 0x5;
>	case 36:	return 0x7;
>	case 48:	return 0x9;
>	case 72:	return 0xb;
>	case 96:	return 0x1;
>	case 108:	return 0x3;
>	case 2:		return 10;
>	case 4:		return 20;
>	case 11:	return 55;
>	case 22:	return 110;
>	}
>	return 0;
>}
>
>static int
>iwn_get_1stream_tx_antmask(struct iwn_softc *sc)
>{
>
>	return IWN_LSB(sc->txchainmask);
>}
>
>static int
>iwn_get_2stream_tx_antmask(struct iwn_softc *sc)
>{
>	int tx;
>
>	/*
>	 * The '2 stream' setup is a bit .. odd.
>	 *
>	 * For NICs that support only 1 antenna, default to IWN_ANT_AB or
>	 * the firmware panics (eg Intel 5100.)
>	 *
>	 * For NICs that support two antennas, we use ANT_AB.
>	 *
>	 * For NICs that support three antennas, we use the two that
>	 * wasn't the default one.
>	 *
>	 * XXX TODO: if bluetooth (full concurrent) is enabled, restrict
>	 * this to only one antenna.
>	 */
>
>	/* Default - transmit on the other antennas */
>	tx = (sc->txchainmask & ~IWN_LSB(sc->txchainmask));
>
>	/* Now, if it's zero, set it to IWN_ANT_AB, so to not panic firmware */
>	if (tx == 0)
>		tx = IWN_ANT_AB;
>
>	/*
>	 * If the NIC is a two-stream TX NIC, configure the TX mask to
>	 * the default chainmask
>	 */
>	else if (sc->ntxchains == 2)
>		tx = sc->txchainmask;
>
>	return (tx);
>}
>
>
>
>/*
> * Calculate the required PLCP value from the given rate,
> * to the given node.
> *
> * This will take the node configuration (eg 11n, rate table
> * setup, etc) into consideration.
> */
>static uint32_t
>iwn_rate_to_plcp(struct iwn_softc *sc, struct ieee80211_node *ni,
>    uint8_t rate)
>{
>	struct ieee80211com *ic = ni->ni_ic;
>	uint32_t plcp = 0;
>	int ridx;
>
>	/*
>	 * If it's an MCS rate, let's set the plcp correctly
>	 * and set the relevant flags based on the node config.
>	 */
>	if (rate & IEEE80211_RATE_MCS) {
>		/*
>		 * Set the initial PLCP value to be between 0->31 for
>		 * MCS 0 -> MCS 31, then set the "I'm an MCS rate!"
>		 * flag.
>		 */
>		plcp = IEEE80211_RV(rate) | IWN_RFLAG_MCS;
>
>		/*
>		 * XXX the following should only occur if both
>		 * the local configuration _and_ the remote node
>		 * advertise these capabilities.  Thus this code
>		 * may need fixing!
>		 */
>
>		/*
>		 * Set the channel width and guard interval.
>		 */
>		if (IEEE80211_IS_CHAN_HT40(ni->ni_chan)) {
>			plcp |= IWN_RFLAG_HT40;
>			if (ni->ni_htcap & IEEE80211_HTCAP_SHORTGI40)
>				plcp |= IWN_RFLAG_SGI;
>		} else if (ni->ni_htcap & IEEE80211_HTCAP_SHORTGI20) {
>			plcp |= IWN_RFLAG_SGI;
>		}
>
>		/*
>		 * Ensure the selected rate matches the link quality
>		 * table entries being used.
>		 */
>		if (rate > 0x8f)
>			plcp |= IWN_RFLAG_ANT(sc->txchainmask);
>		else if (rate > 0x87)
>			plcp |= IWN_RFLAG_ANT(iwn_get_2stream_tx_antmask(sc));
>		else
>			plcp |= IWN_RFLAG_ANT(iwn_get_1stream_tx_antmask(sc));
>	} else {
>		/*
>		 * Set the initial PLCP - fine for both
>		 * OFDM and CCK rates.
>		 */
>		plcp = rate2plcp(rate);
>
>		/* Set CCK flag if it's CCK */
>
>		/* XXX It would be nice to have a method
>		 * to map the ridx -> phy table entry
>		 * so we could just query that, rather than
>		 * this hack to check against IWN_RIDX_OFDM6.
>		 */
>		ridx = ieee80211_legacy_rate_lookup(ic->ic_rt,
>		    rate & IEEE80211_RATE_VAL);
>		if (ridx < IWN_RIDX_OFDM6 &&
>		    IEEE80211_IS_CHAN_2GHZ(ni->ni_chan))
>			plcp |= IWN_RFLAG_CCK;
>
>		/* Set antenna configuration */
>		/* XXX TODO: is this the right antenna to use for legacy? */
>		plcp |= IWN_RFLAG_ANT(iwn_get_1stream_tx_antmask(sc));
>	}
>
>	DPRINTF(sc, IWN_DEBUG_TXRATE, "%s: rate=0x%02x, plcp=0x%08x\n",
>	    __func__,
>	    rate,
>	    plcp);
>
>	return (htole32(plcp));
>}
>
>static void
>iwn_newassoc(struct ieee80211_node *ni, int isnew)
>{
>	/* Doesn't do anything at the moment */
>}
>
>static int
>iwn_media_change(struct ifnet *ifp)
>{
>	int error;
>
>	error = ieee80211_media_change(ifp);
>	/* NB: only the fixed rate can change and that doesn't need a reset */
>	return (error == ENETRESET ? 0 : error);
>}
>
>static int
>iwn_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
>{
>	struct iwn_vap *ivp = IWN_VAP(vap);
>	struct ieee80211com *ic = vap->iv_ic;
>	struct iwn_softc *sc = ic->ic_softc;
>	int error = 0;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
>
>	DPRINTF(sc, IWN_DEBUG_STATE, "%s: %s -> %s\n", __func__,
>	    ieee80211_state_name[vap->iv_state], ieee80211_state_name[nstate]);
>
>	IEEE80211_UNLOCK(ic);
>	IWN_LOCK(sc);
>	callout_stop(&sc->calib_to);
>
>	sc->rxon = &sc->rx_on[IWN_RXON_BSS_CTX];
>
>	switch (nstate) {
>	case IEEE80211_S_ASSOC:
>		if (vap->iv_state != IEEE80211_S_RUN)
>			break;
>		/* FALLTHROUGH */
>	case IEEE80211_S_AUTH:
>		/* Handle AUTH -> AUTH too (explained in wpi_newstate()) */
>
>		/*
>		 * !AUTH -> AUTH transition requires state reset to handle
>		 * reassociations correctly.
>		 */
>		sc->rxon->associd = 0;
>		sc->rxon->filter &= ~htole32(IWN_FILTER_BSS);
>		sc->calib.state = IWN_CALIB_STATE_INIT;
>
>		/* Wait until we hear a beacon before we transmit */
>		if (IEEE80211_IS_CHAN_PASSIVE(ic->ic_curchan))
>			sc->sc_beacon_wait = 1;
>
>		if ((error = iwn_auth(sc, vap)) != 0) {
>			device_printf(sc->sc_dev,
>			    "%s: could not move to auth state\n", __func__);
>		}
>		break;
>
>	case IEEE80211_S_RUN:
>		/*
>		 * RUN -> RUN transition; Just restart the timers.
>		 */
>		if (vap->iv_state == IEEE80211_S_RUN) {
>			sc->calib_cnt = 0;
>			break;
>		}
>
>		/* Wait until we hear a beacon before we transmit */
>		if (IEEE80211_IS_CHAN_PASSIVE(ic->ic_curchan))
>			sc->sc_beacon_wait = 1;
>
>		/*
>		 * !RUN -> RUN requires setting the association id
>		 * which is done with a firmware cmd.  We also defer
>		 * starting the timers until that work is done.
>		 */
>		if ((error = iwn_run(sc, vap)) != 0) {
>			device_printf(sc->sc_dev,
>			    "%s: could not move to run state\n", __func__);
>		}
>		break;
>
>	case IEEE80211_S_INIT:
>		sc->calib.state = IWN_CALIB_STATE_INIT;
>		/*
>		 * Purge the xmit queue so we don't have old frames
>		 * during a new association attempt.
>		 */
>		sc->sc_beacon_wait = 0;
>		iwn_xmit_queue_drain(sc);
>		break;
>
>	default:
>		break;
>	}
>	IWN_UNLOCK(sc);
>	IEEE80211_LOCK(ic);
>	if (error != 0){
>		DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end in error\n", __func__);
>		return error;
>	}
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__);
>
>	return ivp->iv_newstate(vap, nstate, arg);
>}
>
>static void
>iwn_calib_timeout(void *arg)
>{
>	struct iwn_softc *sc = arg;
>
>	IWN_LOCK_ASSERT(sc);
>
>	/* Force automatic TX power calibration every 60 secs. */
>	if (++sc->calib_cnt >= 120) {
>		uint32_t flags = 0;
>
>		DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s\n",
>		    "sending request for statistics");
>		(void)iwn_cmd(sc, IWN_CMD_GET_STATISTICS, &flags,
>		    sizeof flags, 1);
>		sc->calib_cnt = 0;
>	}
>	callout_reset(&sc->calib_to, msecs_to_ticks(500), iwn_calib_timeout,
>	    sc);
>}
>
>/*
> * Process an RX_PHY firmware notification.  This is usually immediately
> * followed by an MPDU_RX_DONE notification.
> */
>static void
>iwn_rx_phy(struct iwn_softc *sc, struct iwn_rx_desc *desc,
>    struct iwn_rx_data *data)
>{
>	struct iwn_rx_stat *stat = (struct iwn_rx_stat *)(desc + 1);
>
>	DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s: received PHY stats\n", __func__);
>	bus_dmamap_sync(sc->rxq.data_dmat, data->map, BUS_DMASYNC_POSTREAD);
>
>	/* Save RX statistics, they will be used on MPDU_RX_DONE. */
>	memcpy(&sc->last_rx_stat, stat, sizeof (*stat));
>	sc->last_rx_valid = 1;
>}
>
>/*
> * Process an RX_DONE (4965AGN only) or MPDU_RX_DONE firmware notification.
> * Each MPDU_RX_DONE notification must be preceded by an RX_PHY one.
> */
>static void
>iwn_rx_done(struct iwn_softc *sc, struct iwn_rx_desc *desc,
>    struct iwn_rx_data *data)
>{
>	struct iwn_ops *ops = &sc->ops;
>	struct ieee80211com *ic = &sc->sc_ic;
>	struct iwn_rx_ring *ring = &sc->rxq;
>	struct ieee80211_frame *wh;
>	struct ieee80211_node *ni;
>	struct mbuf *m, *m1;
>	struct iwn_rx_stat *stat;
>	caddr_t head;
>	bus_addr_t paddr;
>	uint32_t flags;
>	int error, len, rssi, nf;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
>
>	if (desc->type == IWN_MPDU_RX_DONE) {
>		/* Check for prior RX_PHY notification. */
>		if (!sc->last_rx_valid) {
>			DPRINTF(sc, IWN_DEBUG_ANY,
>			    "%s: missing RX_PHY\n", __func__);
>			return;
>		}
>		stat = &sc->last_rx_stat;
>	} else
>		stat = (struct iwn_rx_stat *)(desc + 1);
>
>	bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTREAD);
>
>	if (stat->cfg_phy_len > IWN_STAT_MAXLEN) {
>		device_printf(sc->sc_dev,
>		    "%s: invalid RX statistic header, len %d\n", __func__,
>		    stat->cfg_phy_len);
>		return;
>	}
>	if (desc->type == IWN_MPDU_RX_DONE) {
>		struct iwn_rx_mpdu *mpdu = (struct iwn_rx_mpdu *)(desc + 1);
>		head = (caddr_t)(mpdu + 1);
>		len = le16toh(mpdu->len);
>	} else {
>		head = (caddr_t)(stat + 1) + stat->cfg_phy_len;
>		len = le16toh(stat->len);
>	}
>
>	flags = le32toh(*(uint32_t *)(head + len));
>
>	/* Discard frames with a bad FCS early. */
>	if ((flags & IWN_RX_NOERROR) != IWN_RX_NOERROR) {
>		DPRINTF(sc, IWN_DEBUG_RECV, "%s: RX flags error %x\n",
>		    __func__, flags);
>		counter_u64_add(ic->ic_ierrors, 1);
>		return;
>	}
>	/* Discard frames that are too short. */
>	if (len < sizeof (struct ieee80211_frame_ack)) {
>		DPRINTF(sc, IWN_DEBUG_RECV, "%s: frame too short: %d\n",
>		    __func__, len);
>		counter_u64_add(ic->ic_ierrors, 1);
>		return;
>	}
>
>	m1 = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, IWN_RBUF_SIZE);
>	if (m1 == NULL) {
>		DPRINTF(sc, IWN_DEBUG_ANY, "%s: no mbuf to restock ring\n",
>		    __func__);
>		counter_u64_add(ic->ic_ierrors, 1);
>		return;
>	}
>	bus_dmamap_unload(ring->data_dmat, data->map);
>
>	error = bus_dmamap_load(ring->data_dmat, data->map, mtod(m1, void *),
>	    IWN_RBUF_SIZE, iwn_dma_map_addr, &paddr, BUS_DMA_NOWAIT);
>	if (error != 0 && error != EFBIG) {
>		device_printf(sc->sc_dev,
>		    "%s: bus_dmamap_load failed, error %d\n", __func__, error);
>		m_freem(m1);
>
>		/* Try to reload the old mbuf. */
>		error = bus_dmamap_load(ring->data_dmat, data->map,
>		    mtod(data->m, void *), IWN_RBUF_SIZE, iwn_dma_map_addr,
>		    &paddr, BUS_DMA_NOWAIT);
>		if (error != 0 && error != EFBIG) {
>			panic("%s: could not load old RX mbuf", __func__);
>		}
>		/* Physical address may have changed. */
>		ring->desc[ring->cur] = htole32(paddr >> 8);
>		bus_dmamap_sync(ring->data_dmat, ring->desc_dma.map,
>		    BUS_DMASYNC_PREWRITE);
>		counter_u64_add(ic->ic_ierrors, 1);
>		return;
>	}
>
>	m = data->m;
>	data->m = m1;
>	/* Update RX descriptor. */
>	ring->desc[ring->cur] = htole32(paddr >> 8);
>	bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
>	    BUS_DMASYNC_PREWRITE);
>
>	/* Finalize mbuf. */
>	m->m_data = head;
>	m->m_pkthdr.len = m->m_len = len;
>
>	/* Grab a reference to the source node. */
>	wh = mtod(m, struct ieee80211_frame *);
>	if (len >= sizeof(struct ieee80211_frame_min))
>		ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh);
>	else
>		ni = NULL;
>	nf = (ni != NULL && ni->ni_vap->iv_state == IEEE80211_S_RUN &&
>	    (ic->ic_flags & IEEE80211_F_SCAN) == 0) ? sc->noise : -95;
>
>	rssi = ops->get_rssi(sc, stat);
>
>	if (ieee80211_radiotap_active(ic)) {
>		struct iwn_rx_radiotap_header *tap = &sc->sc_rxtap;
>
>		tap->wr_flags = 0;
>		if (stat->flags & htole16(IWN_STAT_FLAG_SHPREAMBLE))
>			tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
>		tap->wr_dbm_antsignal = (int8_t)rssi;
>		tap->wr_dbm_antnoise = (int8_t)nf;
>		tap->wr_tsft = stat->tstamp;
>		switch (stat->rate) {
>		/* CCK rates. */
>		case  10: tap->wr_rate =   2; break;
>		case  20: tap->wr_rate =   4; break;
>		case  55: tap->wr_rate =  11; break;
>		case 110: tap->wr_rate =  22; break;
>		/* OFDM rates. */
>		case 0xd: tap->wr_rate =  12; break;
>		case 0xf: tap->wr_rate =  18; break;
>		case 0x5: tap->wr_rate =  24; break;
>		case 0x7: tap->wr_rate =  36; break;
>		case 0x9: tap->wr_rate =  48; break;
>		case 0xb: tap->wr_rate =  72; break;
>		case 0x1: tap->wr_rate =  96; break;
>		case 0x3: tap->wr_rate = 108; break;
>		/* Unknown rate: should not happen. */
>		default:  tap->wr_rate =   0;
>		}
>	}
>
>	/*
>	 * If it's a beacon and we're waiting, then do the
>	 * wakeup.  This should unblock raw_xmit/start.
>	 */
>	if (sc->sc_beacon_wait) {
>		uint8_t type, subtype;
>		/* NB: Re-assign wh */
>		wh = mtod(m, struct ieee80211_frame *);
>		type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
>		subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
>		/*
>		 * This assumes at this point we've received our own
>		 * beacon.
>		 */
>		DPRINTF(sc, IWN_DEBUG_TRACE,
>		    "%s: beacon_wait, type=%d, subtype=%d\n",
>		    __func__, type, subtype);
>		if (type == IEEE80211_FC0_TYPE_MGT &&
>		    subtype == IEEE80211_FC0_SUBTYPE_BEACON) {
>			DPRINTF(sc, IWN_DEBUG_TRACE | IWN_DEBUG_XMIT,
>			    "%s: waking things up\n", __func__);
>			/* queue taskqueue to transmit! */
>			taskqueue_enqueue(sc->sc_tq, &sc->sc_xmit_task);
>		}
>	}
>
>	IWN_UNLOCK(sc);
>
>	/* Send the frame to the 802.11 layer. */
>	if (ni != NULL) {
>		if (ni->ni_flags & IEEE80211_NODE_HT)
>			m->m_flags |= M_AMPDU;
>		(void)ieee80211_input(ni, m, rssi - nf, nf);
>		/* Node is no longer needed. */
>		ieee80211_free_node(ni);
>	} else
>		(void)ieee80211_input_all(ic, m, rssi - nf, nf);
>
>	IWN_LOCK(sc);
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__);
>
>}
>
>/* Process an incoming Compressed BlockAck. */
>static void
>iwn_rx_compressed_ba(struct iwn_softc *sc, struct iwn_rx_desc *desc,
>    struct iwn_rx_data *data)
>{
>	struct iwn_ops *ops = &sc->ops;
>	struct iwn_node *wn;
>	struct ieee80211_node *ni;
>	struct iwn_compressed_ba *ba = (struct iwn_compressed_ba *)(desc + 1);
>	struct iwn_tx_ring *txq;
>	struct iwn_tx_data *txdata;
>	struct ieee80211_tx_ampdu *tap;
>	struct mbuf *m;
>	uint64_t bitmap;
>	uint16_t ssn;
>	uint8_t tid;
>	int ackfailcnt = 0, i, lastidx, qid, *res, shift;
>	int tx_ok = 0, tx_err = 0;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE | IWN_DEBUG_XMIT, "->%s begin\n", __func__);
>
>	bus_dmamap_sync(sc->rxq.data_dmat, data->map, BUS_DMASYNC_POSTREAD);
>
>	qid = le16toh(ba->qid);
>	txq = &sc->txq[ba->qid];
>	tap = sc->qid2tap[ba->qid];
>	tid = tap->txa_tid;
>	wn = (void *)tap->txa_ni;
>
>	res = NULL;
>	ssn = 0;
>	if (!IEEE80211_AMPDU_RUNNING(tap)) {
>		res = tap->txa_private;
>		ssn = tap->txa_start & 0xfff;
>	}
>
>	for (lastidx = le16toh(ba->ssn) & 0xff; txq->read != lastidx;) {
>		txdata = &txq->data[txq->read];
>
>		/* Unmap and free mbuf. */
>		bus_dmamap_sync(txq->data_dmat, txdata->map,
>		    BUS_DMASYNC_POSTWRITE);
>		bus_dmamap_unload(txq->data_dmat, txdata->map);
>		m = txdata->m, txdata->m = NULL;
>		ni = txdata->ni, txdata->ni = NULL;
>
>		KASSERT(ni != NULL, ("no node"));
>		KASSERT(m != NULL, ("no mbuf"));
>
>		DPRINTF(sc, IWN_DEBUG_XMIT, "%s: freeing m=%p\n", __func__, m);
>		ieee80211_tx_complete(ni, m, 1);
>
>		txq->queued--;
>		txq->read = (txq->read + 1) % IWN_TX_RING_COUNT;
>	}
>
>	if (txq->queued == 0 && res != NULL) {
>		iwn_nic_lock(sc);
>		ops->ampdu_tx_stop(sc, qid, tid, ssn);
>		iwn_nic_unlock(sc);
>		sc->qid2tap[qid] = NULL;
>		free(res, M_DEVBUF);
>		return;
>	}
>
>	if (wn->agg[tid].bitmap == 0)
>		return;
>
>	shift = wn->agg[tid].startidx - ((le16toh(ba->seq) >> 4) & 0xff);
>	if (shift < 0)
>		shift += 0x100;
>
>	if (wn->agg[tid].nframes > (64 - shift))
>		return;
>
>	/*
>	 * Walk the bitmap and calculate how many successful and failed
>	 * attempts are made.
>	 *
>	 * Yes, the rate control code doesn't know these are A-MPDU
>	 * subframes and that it's okay to fail some of these.
>	 */
>	ni = tap->txa_ni;
>	bitmap = (le64toh(ba->bitmap) >> shift) & wn->agg[tid].bitmap;
>	for (i = 0; bitmap; i++) {
>		if ((bitmap & 1) == 0) {
>			tx_err ++;
>			ieee80211_ratectl_tx_complete(ni->ni_vap, ni,
>			    IEEE80211_RATECTL_TX_FAILURE, &ackfailcnt, NULL);
>		} else {
>			tx_ok ++;
>			ieee80211_ratectl_tx_complete(ni->ni_vap, ni,
>			    IEEE80211_RATECTL_TX_SUCCESS, &ackfailcnt, NULL);
>		}
>		bitmap >>= 1;
>	}
>
>	DPRINTF(sc, IWN_DEBUG_TRACE | IWN_DEBUG_XMIT,
>	    "->%s: end; %d ok; %d err\n",__func__, tx_ok, tx_err);
>
>}
>
>/*
> * Process a CALIBRATION_RESULT notification sent by the initialization
> * firmware on response to a CMD_CALIB_CONFIG command (5000 only).
> */
>static void
>iwn5000_rx_calib_results(struct iwn_softc *sc, struct iwn_rx_desc *desc,
>    struct iwn_rx_data *data)
>{
>	struct iwn_phy_calib *calib = (struct iwn_phy_calib *)(desc + 1);
>	int len, idx = -1;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
>
>	/* Runtime firmware should not send such a notification. */
>	if (sc->sc_flags & IWN_FLAG_CALIB_DONE){
>		DPRINTF(sc, IWN_DEBUG_TRACE, "->%s received after clib done\n",
>	    __func__);
>		return;
>	}
>	len = (le32toh(desc->len) & 0x3fff) - 4;
>	bus_dmamap_sync(sc->rxq.data_dmat, data->map, BUS_DMASYNC_POSTREAD);
>
>	switch (calib->code) {
>	case IWN5000_PHY_CALIB_DC:
>		if (sc->base_params->calib_need & IWN_FLG_NEED_PHY_CALIB_DC)
>			idx = 0;
>		break;
>	case IWN5000_PHY_CALIB_LO:
>		if (sc->base_params->calib_need & IWN_FLG_NEED_PHY_CALIB_LO)
>			idx = 1;
>		break;
>	case IWN5000_PHY_CALIB_TX_IQ:
>		if (sc->base_params->calib_need & IWN_FLG_NEED_PHY_CALIB_TX_IQ)
>			idx = 2;
>		break;
>	case IWN5000_PHY_CALIB_TX_IQ_PERIODIC:
>		if (sc->base_params->calib_need & IWN_FLG_NEED_PHY_CALIB_TX_IQ_PERIODIC)
>			idx = 3;
>		break;
>	case IWN5000_PHY_CALIB_BASE_BAND:
>		if (sc->base_params->calib_need & IWN_FLG_NEED_PHY_CALIB_BASE_BAND)
>			idx = 4;
>		break;
>	}
>	if (idx == -1)	/* Ignore other results. */
>		return;
>
>	/* Save calibration result. */
>	if (sc->calibcmd[idx].buf != NULL)
>		free(sc->calibcmd[idx].buf, M_DEVBUF);
>	sc->calibcmd[idx].buf = malloc(len, M_DEVBUF, M_NOWAIT);
>	if (sc->calibcmd[idx].buf == NULL) {
>		DPRINTF(sc, IWN_DEBUG_CALIBRATE,
>		    "not enough memory for calibration result %d\n",
>		    calib->code);
>		return;
>	}
>	DPRINTF(sc, IWN_DEBUG_CALIBRATE,
>	    "saving calibration result idx=%d, code=%d len=%d\n", idx, calib->code, len);
>	sc->calibcmd[idx].len = len;
>	memcpy(sc->calibcmd[idx].buf, calib, len);
>}
>
>static void
>iwn_stats_update(struct iwn_softc *sc, struct iwn_calib_state *calib,
>    struct iwn_stats *stats, int len)
>{
>	struct iwn_stats_bt *stats_bt;
>	struct iwn_stats *lstats;
>
>	/*
>	 * First - check whether the length is the bluetooth or normal.
>	 *
>	 * If it's normal - just copy it and bump out.
>	 * Otherwise we have to convert things.
>	 */
>
>	if (len == sizeof(struct iwn_stats) + 4) {
>		memcpy(&sc->last_stat, stats, sizeof(struct iwn_stats));
>		sc->last_stat_valid = 1;
>		return;
>	}
>
>	/*
>	 * If it's not the bluetooth size - log, then just copy.
>	 */
>	if (len != sizeof(struct iwn_stats_bt) + 4) {
>		DPRINTF(sc, IWN_DEBUG_STATS,
>		    "%s: size of rx statistics (%d) not an expected size!\n",
>		    __func__,
>		    len);
>		memcpy(&sc->last_stat, stats, sizeof(struct iwn_stats));
>		sc->last_stat_valid = 1;
>		return;
>	}
>
>	/*
>	 * Ok. Time to copy.
>	 */
>	stats_bt = (struct iwn_stats_bt *) stats;
>	lstats = &sc->last_stat;
>
>	/* flags */
>	lstats->flags = stats_bt->flags;
>	/* rx_bt */
>	memcpy(&lstats->rx.ofdm, &stats_bt->rx_bt.ofdm,
>	    sizeof(struct iwn_rx_phy_stats));
>	memcpy(&lstats->rx.cck, &stats_bt->rx_bt.cck,
>	    sizeof(struct iwn_rx_phy_stats));
>	memcpy(&lstats->rx.general, &stats_bt->rx_bt.general_bt.common,
>	    sizeof(struct iwn_rx_general_stats));
>	memcpy(&lstats->rx.ht, &stats_bt->rx_bt.ht,
>	    sizeof(struct iwn_rx_ht_phy_stats));
>	/* tx */
>	memcpy(&lstats->tx, &stats_bt->tx,
>	    sizeof(struct iwn_tx_stats));
>	/* general */
>	memcpy(&lstats->general, &stats_bt->general,
>	    sizeof(struct iwn_general_stats));
>
>	/* XXX TODO: Squirrel away the extra bluetooth stats somewhere */
>	sc->last_stat_valid = 1;
>}
>
>/*
> * Process an RX_STATISTICS or BEACON_STATISTICS firmware notification.
> * The latter is sent by the firmware after each received beacon.
> */
>static void
>iwn_rx_statistics(struct iwn_softc *sc, struct iwn_rx_desc *desc,
>    struct iwn_rx_data *data)
>{
>	struct iwn_ops *ops = &sc->ops;
>	struct ieee80211com *ic = &sc->sc_ic;
>	struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
>	struct iwn_calib_state *calib = &sc->calib;
>	struct iwn_stats *stats = (struct iwn_stats *)(desc + 1);
>	struct iwn_stats *lstats;
>	int temp;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
>
>	/* Ignore statistics received during a scan. */
>	if (vap->iv_state != IEEE80211_S_RUN ||
>	    (ic->ic_flags & IEEE80211_F_SCAN)){
>		DPRINTF(sc, IWN_DEBUG_TRACE, "->%s received during calib\n",
>	    __func__);
>		return;
>	}
>
>	bus_dmamap_sync(sc->rxq.data_dmat, data->map, BUS_DMASYNC_POSTREAD);
>
>	DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_STATS,
>	    "%s: received statistics, cmd %d, len %d\n",
>	    __func__, desc->type, le16toh(desc->len));
>	sc->calib_cnt = 0;	/* Reset TX power calibration timeout. */
>
>	/*
>	 * Collect/track general statistics for reporting.
>	 *
>	 * This takes care of ensuring that the bluetooth sized message
>	 * will be correctly converted to the legacy sized message.
>	 */
>	iwn_stats_update(sc, calib, stats, le16toh(desc->len));
>
>	/*
>	 * And now, let's take a reference of it to use!
>	 */
>	lstats = &sc->last_stat;
>
>	/* Test if temperature has changed. */
>	if (lstats->general.temp != sc->rawtemp) {
>		/* Convert "raw" temperature to degC. */
>		sc->rawtemp = stats->general.temp;
>		temp = ops->get_temperature(sc);
>		DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s: temperature %d\n",
>		    __func__, temp);
>
>		/* Update TX power if need be (4965AGN only). */
>		if (sc->hw_type == IWN_HW_REV_TYPE_4965)
>			iwn4965_power_calibration(sc, temp);
>	}
>
>	if (desc->type != IWN_BEACON_STATISTICS)
>		return;	/* Reply to a statistics request. */
>
>	sc->noise = iwn_get_noise(&lstats->rx.general);
>	DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s: noise %d\n", __func__, sc->noise);
>
>	/* Test that RSSI and noise are present in stats report. */
>	if (le32toh(lstats->rx.general.flags) != 1) {
>		DPRINTF(sc, IWN_DEBUG_ANY, "%s\n",
>		    "received statistics without RSSI");
>		return;
>	}
>
>	if (calib->state == IWN_CALIB_STATE_ASSOC)
>		iwn_collect_noise(sc, &lstats->rx.general);
>	else if (calib->state == IWN_CALIB_STATE_RUN) {
>		iwn_tune_sensitivity(sc, &lstats->rx);
>		/*
>		 * XXX TODO: Only run the RX recovery if we're associated!
>		 */
>		iwn_check_rx_recovery(sc, lstats);
>		iwn_save_stats_counters(sc, lstats);
>	}
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__);
>}
>
>/*
> * Save the relevant statistic counters for the next calibration
> * pass.
> */
>static void
>iwn_save_stats_counters(struct iwn_softc *sc, const struct iwn_stats *rs)
>{
>	struct iwn_calib_state *calib = &sc->calib;
>
>	/* Save counters values for next call. */
>	calib->bad_plcp_cck = le32toh(rs->rx.cck.bad_plcp);
>	calib->fa_cck = le32toh(rs->rx.cck.fa);
>	calib->bad_plcp_ht = le32toh(rs->rx.ht.bad_plcp);
>	calib->bad_plcp_ofdm = le32toh(rs->rx.ofdm.bad_plcp);
>	calib->fa_ofdm = le32toh(rs->rx.ofdm.fa);
>
>	/* Last time we received these tick values */
>	sc->last_calib_ticks = ticks;
>}
>
>/*
> * Process a TX_DONE firmware notification.  Unfortunately, the 4965AGN
> * and 5000 adapters have different incompatible TX status formats.
> */
>static void
>iwn4965_tx_done(struct iwn_softc *sc, struct iwn_rx_desc *desc,
>    struct iwn_rx_data *data)
>{
>	struct iwn4965_tx_stat *stat = (struct iwn4965_tx_stat *)(desc + 1);
>	struct iwn_tx_ring *ring;
>	int qid;
>
>	qid = desc->qid & 0xf;
>	ring = &sc->txq[qid];
>
>	DPRINTF(sc, IWN_DEBUG_XMIT, "%s: "
>	    "qid %d idx %d RTS retries %d ACK retries %d nkill %d rate %x duration %d status %x\n",
>	    __func__, desc->qid, desc->idx,
>	    stat->rtsfailcnt,
>	    stat->ackfailcnt,
>	    stat->btkillcnt,
>	    stat->rate, le16toh(stat->duration),
>	    le32toh(stat->status));
>
>	bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTREAD);
>	if (qid >= sc->firstaggqueue) {
>		iwn_ampdu_tx_done(sc, qid, desc->idx, stat->nframes,
>		    stat->ackfailcnt, &stat->status);
>	} else {
>		iwn_tx_done(sc, desc, stat->ackfailcnt,
>		    le32toh(stat->status) & 0xff);
>	}
>}
>
>static void
>iwn5000_tx_done(struct iwn_softc *sc, struct iwn_rx_desc *desc,
>    struct iwn_rx_data *data)
>{
>	struct iwn5000_tx_stat *stat = (struct iwn5000_tx_stat *)(desc + 1);
>	struct iwn_tx_ring *ring;
>	int qid;
>
>	qid = desc->qid & 0xf;
>	ring = &sc->txq[qid];
>
>	DPRINTF(sc, IWN_DEBUG_XMIT, "%s: "
>	    "qid %d idx %d RTS retries %d ACK retries %d nkill %d rate %x duration %d status %x\n",
>	    __func__, desc->qid, desc->idx,
>	    stat->rtsfailcnt,
>	    stat->ackfailcnt,
>	    stat->btkillcnt,
>	    stat->rate, le16toh(stat->duration),
>	    le32toh(stat->status));
>
>#ifdef notyet
>	/* Reset TX scheduler slot. */
>	iwn5000_reset_sched(sc, desc->qid & 0xf, desc->idx);
>#endif
>
>	bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTREAD);
>	if (qid >= sc->firstaggqueue) {
>		iwn_ampdu_tx_done(sc, qid, desc->idx, stat->nframes,
>		    stat->ackfailcnt, &stat->status);
>	} else {
>		iwn_tx_done(sc, desc, stat->ackfailcnt,
>		    le16toh(stat->status) & 0xff);
>	}
>}
>
>/*
> * Adapter-independent backend for TX_DONE firmware notifications.
> */
>static void
>iwn_tx_done(struct iwn_softc *sc, struct iwn_rx_desc *desc, int ackfailcnt,
>    uint8_t status)
>{
>	struct iwn_tx_ring *ring = &sc->txq[desc->qid & 0xf];
>	struct iwn_tx_data *data = &ring->data[desc->idx];
>	struct mbuf *m;
>	struct ieee80211_node *ni;
>	struct ieee80211vap *vap;
>
>	KASSERT(data->ni != NULL, ("no node"));
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
>
>	/* Unmap and free mbuf. */
>	bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTWRITE);
>	bus_dmamap_unload(ring->data_dmat, data->map);
>	m = data->m, data->m = NULL;
>	ni = data->ni, data->ni = NULL;
>	vap = ni->ni_vap;
>
>	/*
>	 * Update rate control statistics for the node.
>	 */
>	if (status & IWN_TX_FAIL)
>		ieee80211_ratectl_tx_complete(vap, ni,
>		    IEEE80211_RATECTL_TX_FAILURE, &ackfailcnt, NULL);
>	else
>		ieee80211_ratectl_tx_complete(vap, ni,
>		    IEEE80211_RATECTL_TX_SUCCESS, &ackfailcnt, NULL);
>
>	/*
>	 * Channels marked for "radar" require traffic to be received
>	 * to unlock before we can transmit.  Until traffic is seen
>	 * any attempt to transmit is returned immediately with status
>	 * set to IWN_TX_FAIL_TX_LOCKED.  Unfortunately this can easily
>	 * happen on first authenticate after scanning.  To workaround
>	 * this we ignore a failure of this sort in AUTH state so the
>	 * 802.11 layer will fall back to using a timeout to wait for
>	 * the AUTH reply.  This allows the firmware time to see
>	 * traffic so a subsequent retry of AUTH succeeds.  It's
>	 * unclear why the firmware does not maintain state for
>	 * channels recently visited as this would allow immediate
>	 * use of the channel after a scan (where we see traffic).
>	 */
>	if (status == IWN_TX_FAIL_TX_LOCKED &&
>	    ni->ni_vap->iv_state == IEEE80211_S_AUTH)
>		ieee80211_tx_complete(ni, m, 0);
>	else
>		ieee80211_tx_complete(ni, m,
>		    (status & IWN_TX_FAIL) != 0);
>
>	sc->sc_tx_timer = 0;
>	if (--ring->queued < IWN_TX_RING_LOMARK)
>		sc->qfullmsk &= ~(1 << ring->qid);
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__);
>}
>
>/*
> * Process a "command done" firmware notification.  This is where we wakeup
> * processes waiting for a synchronous command completion.
> */
>static void
>iwn_cmd_done(struct iwn_softc *sc, struct iwn_rx_desc *desc)
>{
>	struct iwn_tx_ring *ring;
>	struct iwn_tx_data *data;
>	int cmd_queue_num;
>
>	if (sc->sc_flags & IWN_FLAG_PAN_SUPPORT)
>		cmd_queue_num = IWN_PAN_CMD_QUEUE;
>	else
>		cmd_queue_num = IWN_CMD_QUEUE_NUM;
>
>	if ((desc->qid & IWN_RX_DESC_QID_MSK) != cmd_queue_num)
>		return;	/* Not a command ack. */
>
>	ring = &sc->txq[cmd_queue_num];
>	data = &ring->data[desc->idx];
>
>	/* If the command was mapped in an mbuf, free it. */
>	if (data->m != NULL) {
>		bus_dmamap_sync(ring->data_dmat, data->map,
>		    BUS_DMASYNC_POSTWRITE);
>		bus_dmamap_unload(ring->data_dmat, data->map);
>		m_freem(data->m);
>		data->m = NULL;
>	}
>	wakeup(&ring->desc[desc->idx]);
>}
>
>static void
>iwn_ampdu_tx_done(struct iwn_softc *sc, int qid, int idx, int nframes,
>    int ackfailcnt, void *stat)
>{
>	struct iwn_ops *ops = &sc->ops;
>	struct iwn_tx_ring *ring = &sc->txq[qid];
>	struct iwn_tx_data *data;
>	struct mbuf *m;
>	struct iwn_node *wn;
>	struct ieee80211_node *ni;
>	struct ieee80211_tx_ampdu *tap;
>	uint64_t bitmap;
>	uint32_t *status = stat;
>	uint16_t *aggstatus = stat;
>	uint16_t ssn;
>	uint8_t tid;
>	int bit, i, lastidx, *res, seqno, shift, start;
>
>	/* XXX TODO: status is le16 field! Grr */
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
>	DPRINTF(sc, IWN_DEBUG_XMIT, "%s: nframes=%d, status=0x%08x\n",
>	    __func__,
>	    nframes,
>	    *status);
>
>	tap = sc->qid2tap[qid];
>	tid = tap->txa_tid;
>	wn = (void *)tap->txa_ni;
>	ni = tap->txa_ni;
>
>	/*
>	 * XXX TODO: ACK and RTS failures would be nice here!
>	 */
>
>	/*
>	 * A-MPDU single frame status - if we failed to transmit it
>	 * in A-MPDU, then it may be a permanent failure.
>	 *
>	 * XXX TODO: check what the Linux iwlwifi driver does here;
>	 * there's some permanent and temporary failures that may be
>	 * handled differently.
>	 */
>	if (nframes == 1) {
>		if ((*status & 0xff) != 1 && (*status & 0xff) != 2) {
>#ifdef	NOT_YET
>			printf("ieee80211_send_bar()\n");
>#endif
>			/*
>			 * If we completely fail a transmit, make sure a
>			 * notification is pushed up to the rate control
>			 * layer.
>			 */
>			ieee80211_ratectl_tx_complete(ni->ni_vap,
>			    ni,
>			    IEEE80211_RATECTL_TX_FAILURE,
>			    &ackfailcnt,
>			    NULL);
>		} else {
>			/*
>			 * If nframes=1, then we won't be getting a BA for
>			 * this frame.  Ensure that we correctly update the
>			 * rate control code with how many retries were
>			 * needed to send it.
>			 */
>			ieee80211_ratectl_tx_complete(ni->ni_vap,
>			    ni,
>			    IEEE80211_RATECTL_TX_SUCCESS,
>			    &ackfailcnt,
>			    NULL);
>		}
>	}
>
>	bitmap = 0;
>	start = idx;
>	for (i = 0; i < nframes; i++) {
>		if (le16toh(aggstatus[i * 2]) & 0xc)
>			continue;
>
>		idx = le16toh(aggstatus[2*i + 1]) & 0xff;
>		bit = idx - start;
>		shift = 0;
>		if (bit >= 64) {
>			shift = 0x100 - idx + start;
>			bit = 0;
>			start = idx;
>		} else if (bit <= -64)
>			bit = 0x100 - start + idx;
>		else if (bit < 0) {
>			shift = start - idx;
>			start = idx;
>			bit = 0;
>		}
>		bitmap = bitmap << shift;
>		bitmap |= 1ULL << bit;
>	}
>	tap = sc->qid2tap[qid];
>	tid = tap->txa_tid;
>	wn = (void *)tap->txa_ni;
>	wn->agg[tid].bitmap = bitmap;
>	wn->agg[tid].startidx = start;
>	wn->agg[tid].nframes = nframes;
>
>	res = NULL;
>	ssn = 0;
>	if (!IEEE80211_AMPDU_RUNNING(tap)) {
>		res = tap->txa_private;
>		ssn = tap->txa_start & 0xfff;
>	}
>
>	/* This is going nframes DWORDS into the descriptor? */
>	seqno = le32toh(*(status + nframes)) & 0xfff;
>	for (lastidx = (seqno & 0xff); ring->read != lastidx;) {
>		data = &ring->data[ring->read];
>
>		/* Unmap and free mbuf. */
>		bus_dmamap_sync(ring->data_dmat, data->map,
>		    BUS_DMASYNC_POSTWRITE);
>		bus_dmamap_unload(ring->data_dmat, data->map);
>		m = data->m, data->m = NULL;
>		ni = data->ni, data->ni = NULL;
>
>		KASSERT(ni != NULL, ("no node"));
>		KASSERT(m != NULL, ("no mbuf"));
>		DPRINTF(sc, IWN_DEBUG_XMIT, "%s: freeing m=%p\n", __func__, m);
>		ieee80211_tx_complete(ni, m, 1);
>
>		ring->queued--;
>		ring->read = (ring->read + 1) % IWN_TX_RING_COUNT;
>	}
>
>	if (ring->queued == 0 && res != NULL) {
>		iwn_nic_lock(sc);
>		ops->ampdu_tx_stop(sc, qid, tid, ssn);
>		iwn_nic_unlock(sc);
>		sc->qid2tap[qid] = NULL;
>		free(res, M_DEVBUF);
>		return;
>	}
>
>	sc->sc_tx_timer = 0;
>	if (ring->queued < IWN_TX_RING_LOMARK)
>		sc->qfullmsk &= ~(1 << ring->qid);
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__);
>}
>
>/*
> * Process an INT_FH_RX or INT_SW_RX interrupt.
> */
>static void
>iwn_notif_intr(struct iwn_softc *sc)
>{
>	struct iwn_ops *ops = &sc->ops;
>	struct ieee80211com *ic = &sc->sc_ic;
>	struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
>	uint16_t hw;
>
>	bus_dmamap_sync(sc->rxq.stat_dma.tag, sc->rxq.stat_dma.map,
>	    BUS_DMASYNC_POSTREAD);
>
>	hw = le16toh(sc->rxq.stat->closed_count) & 0xfff;
>	while (sc->rxq.cur != hw) {
>		struct iwn_rx_data *data = &sc->rxq.data[sc->rxq.cur];
>		struct iwn_rx_desc *desc;
>
>		bus_dmamap_sync(sc->rxq.data_dmat, data->map,
>		    BUS_DMASYNC_POSTREAD);
>		desc = mtod(data->m, struct iwn_rx_desc *);
>
>		DPRINTF(sc, IWN_DEBUG_RECV,
>		    "%s: cur=%d; qid %x idx %d flags %x type %d(%s) len %d\n",
>		    __func__, sc->rxq.cur, desc->qid & 0xf, desc->idx, desc->flags,
>		    desc->type, iwn_intr_str(desc->type),
>		    le16toh(desc->len));
>
>		if (!(desc->qid & IWN_UNSOLICITED_RX_NOTIF))	/* Reply to a command. */
>			iwn_cmd_done(sc, desc);
>
>		switch (desc->type) {
>		case IWN_RX_PHY:
>			iwn_rx_phy(sc, desc, data);
>			break;
>
>		case IWN_RX_DONE:		/* 4965AGN only. */
>		case IWN_MPDU_RX_DONE:
>			/* An 802.11 frame has been received. */
>			iwn_rx_done(sc, desc, data);
>			break;
>
>		case IWN_RX_COMPRESSED_BA:
>			/* A Compressed BlockAck has been received. */
>			iwn_rx_compressed_ba(sc, desc, data);
>			break;
>
>		case IWN_TX_DONE:
>			/* An 802.11 frame has been transmitted. */
>			ops->tx_done(sc, desc, data);
>			break;
>
>		case IWN_RX_STATISTICS:
>		case IWN_BEACON_STATISTICS:
>			iwn_rx_statistics(sc, desc, data);
>			break;
>
>		case IWN_BEACON_MISSED:
>		{
>			struct iwn_beacon_missed *miss =
>			    (struct iwn_beacon_missed *)(desc + 1);
>			int misses;
>
>			bus_dmamap_sync(sc->rxq.data_dmat, data->map,
>			    BUS_DMASYNC_POSTREAD);
>			misses = le32toh(miss->consecutive);
>
>			DPRINTF(sc, IWN_DEBUG_STATE,
>			    "%s: beacons missed %d/%d\n", __func__,
>			    misses, le32toh(miss->total));
>			/*
>			 * If more than 5 consecutive beacons are missed,
>			 * reinitialize the sensitivity state machine.
>			 */
>			if (vap->iv_state == IEEE80211_S_RUN &&
>			    (ic->ic_flags & IEEE80211_F_SCAN) == 0) {
>				if (misses > 5)
>					(void)iwn_init_sensitivity(sc);
>				if (misses >= vap->iv_bmissthreshold) {
>					IWN_UNLOCK(sc);
>					ieee80211_beacon_miss(ic);
>					IWN_LOCK(sc);
>				}
>			}
>			break;
>		}
>		case IWN_UC_READY:
>		{
>			struct iwn_ucode_info *uc =
>			    (struct iwn_ucode_info *)(desc + 1);
>
>			/* The microcontroller is ready. */
>			bus_dmamap_sync(sc->rxq.data_dmat, data->map,
>			    BUS_DMASYNC_POSTREAD);
>			DPRINTF(sc, IWN_DEBUG_RESET,
>			    "microcode alive notification version=%d.%d "
>			    "subtype=%x alive=%x\n", uc->major, uc->minor,
>			    uc->subtype, le32toh(uc->valid));
>
>			if (le32toh(uc->valid) != 1) {
>				device_printf(sc->sc_dev,
>				    "microcontroller initialization failed");
>				break;
>			}
>			if (uc->subtype == IWN_UCODE_INIT) {
>				/* Save microcontroller report. */
>				memcpy(&sc->ucode_info, uc, sizeof (*uc));
>			}
>			/* Save the address of the error log in SRAM. */
>			sc->errptr = le32toh(uc->errptr);
>			break;
>		}
>		case IWN_STATE_CHANGED:
>		{
>			/*
>			 * State change allows hardware switch change to be
>			 * noted. However, we handle this in iwn_intr as we
>			 * get both the enable/disble intr.
>			 */
>			bus_dmamap_sync(sc->rxq.data_dmat, data->map,
>			    BUS_DMASYNC_POSTREAD);
>#ifdef	IWN_DEBUG
>			uint32_t *status = (uint32_t *)(desc + 1);
>			DPRINTF(sc, IWN_DEBUG_INTR | IWN_DEBUG_STATE,
>			    "state changed to %x\n",
>			    le32toh(*status));
>#endif
>			break;
>		}
>		case IWN_START_SCAN:
>		{
>			bus_dmamap_sync(sc->rxq.data_dmat, data->map,
>			    BUS_DMASYNC_POSTREAD);
>#ifdef	IWN_DEBUG
>			struct iwn_start_scan *scan =
>			    (struct iwn_start_scan *)(desc + 1);
>			DPRINTF(sc, IWN_DEBUG_ANY,
>			    "%s: scanning channel %d status %x\n",
>			    __func__, scan->chan, le32toh(scan->status));
>#endif
>			break;
>		}
>		case IWN_STOP_SCAN:
>		{
>			bus_dmamap_sync(sc->rxq.data_dmat, data->map,
>			    BUS_DMASYNC_POSTREAD);
>#ifdef	IWN_DEBUG
>			struct iwn_stop_scan *scan =
>			    (struct iwn_stop_scan *)(desc + 1);
>			DPRINTF(sc, IWN_DEBUG_STATE | IWN_DEBUG_SCAN,
>			    "scan finished nchan=%d status=%d chan=%d\n",
>			    scan->nchan, scan->status, scan->chan);
>#endif
>			sc->sc_is_scanning = 0;
>			callout_stop(&sc->scan_timeout);
>			IWN_UNLOCK(sc);
>			ieee80211_scan_next(vap);
>			IWN_LOCK(sc);
>			break;
>		}
>		case IWN5000_CALIBRATION_RESULT:
>			iwn5000_rx_calib_results(sc, desc, data);
>			break;
>
>		case IWN5000_CALIBRATION_DONE:
>			sc->sc_flags |= IWN_FLAG_CALIB_DONE;
>			wakeup(sc);
>			break;
>		}
>
>		sc->rxq.cur = (sc->rxq.cur + 1) % IWN_RX_RING_COUNT;
>	}
>
>	/* Tell the firmware what we have processed. */
>	hw = (hw == 0) ? IWN_RX_RING_COUNT - 1 : hw - 1;
>	IWN_WRITE(sc, IWN_FH_RX_WPTR, hw & ~7);
>}
>
>/*
> * Process an INT_WAKEUP interrupt raised when the microcontroller wakes up
> * from power-down sleep mode.
> */
>static void
>iwn_wakeup_intr(struct iwn_softc *sc)
>{
>	int qid;
>
>	DPRINTF(sc, IWN_DEBUG_RESET, "%s: ucode wakeup from power-down sleep\n",
>	    __func__);
>
>	/* Wakeup RX and TX rings. */
>	IWN_WRITE(sc, IWN_FH_RX_WPTR, sc->rxq.cur & ~7);
>	for (qid = 0; qid < sc->ntxqs; qid++) {
>		struct iwn_tx_ring *ring = &sc->txq[qid];
>		IWN_WRITE(sc, IWN_HBUS_TARG_WRPTR, qid << 8 | ring->cur);
>	}
>}
>
>static void
>iwn_rftoggle_intr(struct iwn_softc *sc)
>{
>	struct ieee80211com *ic = &sc->sc_ic;
>	uint32_t tmp = IWN_READ(sc, IWN_GP_CNTRL);
>
>	IWN_LOCK_ASSERT(sc);
>
>	device_printf(sc->sc_dev, "RF switch: radio %s\n",
>	    (tmp & IWN_GP_CNTRL_RFKILL) ? "enabled" : "disabled");
>	if (tmp & IWN_GP_CNTRL_RFKILL)
>		ieee80211_runtask(ic, &sc->sc_radioon_task);
>	else
>		ieee80211_runtask(ic, &sc->sc_radiooff_task);
>}
>
>/*
> * Dump the error log of the firmware when a firmware panic occurs.  Although
> * we can't debug the firmware because it is neither open source nor free, it
> * can help us to identify certain classes of problems.
> */
>static void
>iwn_fatal_intr(struct iwn_softc *sc)
>{
>	struct iwn_fw_dump dump;
>	int i;
>
>	IWN_LOCK_ASSERT(sc);
>
>	/* Force a complete recalibration on next init. */
>	sc->sc_flags &= ~IWN_FLAG_CALIB_DONE;
>
>	/* Check that the error log address is valid. */
>	if (sc->errptr < IWN_FW_DATA_BASE ||
>	    sc->errptr + sizeof (dump) >
>	    IWN_FW_DATA_BASE + sc->fw_data_maxsz) {
>		printf("%s: bad firmware error log address 0x%08x\n", __func__,
>		    sc->errptr);
>		return;
>	}
>	if (iwn_nic_lock(sc) != 0) {
>		printf("%s: could not read firmware error log\n", __func__);
>		return;
>	}
>	/* Read firmware error log from SRAM. */
>	iwn_mem_read_region_4(sc, sc->errptr, (uint32_t *)&dump,
>	    sizeof (dump) / sizeof (uint32_t));
>	iwn_nic_unlock(sc);
>
>	if (dump.valid == 0) {
>		printf("%s: firmware error log is empty\n", __func__);
>		return;
>	}
>	printf("firmware error log:\n");
>	printf("  error type      = \"%s\" (0x%08X)\n",
>	    (dump.id < nitems(iwn_fw_errmsg)) ?
>		iwn_fw_errmsg[dump.id] : "UNKNOWN",
>	    dump.id);
>	printf("  program counter = 0x%08X\n", dump.pc);
>	printf("  source line     = 0x%08X\n", dump.src_line);
>	printf("  error data      = 0x%08X%08X\n",
>	    dump.error_data[0], dump.error_data[1]);
>	printf("  branch link     = 0x%08X%08X\n",
>	    dump.branch_link[0], dump.branch_link[1]);
>	printf("  interrupt link  = 0x%08X%08X\n",
>	    dump.interrupt_link[0], dump.interrupt_link[1]);
>	printf("  time            = %u\n", dump.time[0]);
>
>	/* Dump driver status (TX and RX rings) while we're here. */
>	printf("driver status:\n");
>	for (i = 0; i < sc->ntxqs; i++) {
>		struct iwn_tx_ring *ring = &sc->txq[i];
>		printf("  tx ring %2d: qid=%-2d cur=%-3d queued=%-3d\n",
>		    i, ring->qid, ring->cur, ring->queued);
>	}
>	printf("  rx ring: cur=%d\n", sc->rxq.cur);
>}
>
>static void
>iwn_intr(void *arg)
>{
>	struct iwn_softc *sc = arg;
>	uint32_t r1, r2, tmp;
>
>	IWN_LOCK(sc);
>
>	/* Disable interrupts. */
>	IWN_WRITE(sc, IWN_INT_MASK, 0);
>
>	/* Read interrupts from ICT (fast) or from registers (slow). */
>	if (sc->sc_flags & IWN_FLAG_USE_ICT) {
>		tmp = 0;
>		while (sc->ict[sc->ict_cur] != 0) {
>			tmp |= sc->ict[sc->ict_cur];
>			sc->ict[sc->ict_cur] = 0;	/* Acknowledge. */
>			sc->ict_cur = (sc->ict_cur + 1) % IWN_ICT_COUNT;
>		}
>		tmp = le32toh(tmp);
>		if (tmp == 0xffffffff)	/* Shouldn't happen. */
>			tmp = 0;
>		else if (tmp & 0xc0000)	/* Workaround a HW bug. */
>			tmp |= 0x8000;
>		r1 = (tmp & 0xff00) << 16 | (tmp & 0xff);
>		r2 = 0;	/* Unused. */
>	} else {
>		r1 = IWN_READ(sc, IWN_INT);
>		if (r1 == 0xffffffff || (r1 & 0xfffffff0) == 0xa5a5a5a0) {
>			IWN_UNLOCK(sc);
>			return;	/* Hardware gone! */
>		}
>		r2 = IWN_READ(sc, IWN_FH_INT);
>	}
>
>	DPRINTF(sc, IWN_DEBUG_INTR, "interrupt reg1=0x%08x reg2=0x%08x\n"
>    , r1, r2);
>
>	if (r1 == 0 && r2 == 0)
>		goto done;	/* Interrupt not for us. */
>
>	/* Acknowledge interrupts. */
>	IWN_WRITE(sc, IWN_INT, r1);
>	if (!(sc->sc_flags & IWN_FLAG_USE_ICT))
>		IWN_WRITE(sc, IWN_FH_INT, r2);
>
>	if (r1 & IWN_INT_RF_TOGGLED) {
>		iwn_rftoggle_intr(sc);
>		goto done;
>	}
>	if (r1 & IWN_INT_CT_REACHED) {
>		device_printf(sc->sc_dev, "%s: critical temperature reached!\n",
>		    __func__);
>	}
>	if (r1 & (IWN_INT_SW_ERR | IWN_INT_HW_ERR)) {
>		device_printf(sc->sc_dev, "%s: fatal firmware error\n",
>		    __func__);
>#ifdef	IWN_DEBUG
>		iwn_debug_register(sc);
>#endif
>		/* Dump firmware error log and stop. */
>		iwn_fatal_intr(sc);
>
>		taskqueue_enqueue(sc->sc_tq, &sc->sc_panic_task);
>		goto done;
>	}
>	if ((r1 & (IWN_INT_FH_RX | IWN_INT_SW_RX | IWN_INT_RX_PERIODIC)) ||
>	    (r2 & IWN_FH_INT_RX)) {
>		if (sc->sc_flags & IWN_FLAG_USE_ICT) {
>			if (r1 & (IWN_INT_FH_RX | IWN_INT_SW_RX))
>				IWN_WRITE(sc, IWN_FH_INT, IWN_FH_INT_RX);
>			IWN_WRITE_1(sc, IWN_INT_PERIODIC,
>			    IWN_INT_PERIODIC_DIS);
>			iwn_notif_intr(sc);
>			if (r1 & (IWN_INT_FH_RX | IWN_INT_SW_RX)) {
>				IWN_WRITE_1(sc, IWN_INT_PERIODIC,
>				    IWN_INT_PERIODIC_ENA);
>			}
>		} else
>			iwn_notif_intr(sc);
>	}
>
>	if ((r1 & IWN_INT_FH_TX) || (r2 & IWN_FH_INT_TX)) {
>		if (sc->sc_flags & IWN_FLAG_USE_ICT)
>			IWN_WRITE(sc, IWN_FH_INT, IWN_FH_INT_TX);
>		wakeup(sc);	/* FH DMA transfer completed. */
>	}
>
>	if (r1 & IWN_INT_ALIVE)
>		wakeup(sc);	/* Firmware is alive. */
>
>	if (r1 & IWN_INT_WAKEUP)
>		iwn_wakeup_intr(sc);
>
>done:
>	/* Re-enable interrupts. */
>	if (sc->sc_flags & IWN_FLAG_RUNNING)
>		IWN_WRITE(sc, IWN_INT_MASK, sc->int_mask);
>
>	IWN_UNLOCK(sc);
>}
>
>/*
> * Update TX scheduler ring when transmitting an 802.11 frame (4965AGN and
> * 5000 adapters use a slightly different format).
> */
>static void
>iwn4965_update_sched(struct iwn_softc *sc, int qid, int idx, uint8_t id,
>    uint16_t len)
>{
>	uint16_t *w = &sc->sched[qid * IWN4965_SCHED_COUNT + idx];
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
>
>	*w = htole16(len + 8);
>	bus_dmamap_sync(sc->sched_dma.tag, sc->sched_dma.map,
>	    BUS_DMASYNC_PREWRITE);
>	if (idx < IWN_SCHED_WINSZ) {
>		*(w + IWN_TX_RING_COUNT) = *w;
>		bus_dmamap_sync(sc->sched_dma.tag, sc->sched_dma.map,
>		    BUS_DMASYNC_PREWRITE);
>	}
>}
>
>static void
>iwn5000_update_sched(struct iwn_softc *sc, int qid, int idx, uint8_t id,
>    uint16_t len)
>{
>	uint16_t *w = &sc->sched[qid * IWN5000_SCHED_COUNT + idx];
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
>
>	*w = htole16(id << 12 | (len + 8));
>	bus_dmamap_sync(sc->sched_dma.tag, sc->sched_dma.map,
>	    BUS_DMASYNC_PREWRITE);
>	if (idx < IWN_SCHED_WINSZ) {
>		*(w + IWN_TX_RING_COUNT) = *w;
>		bus_dmamap_sync(sc->sched_dma.tag, sc->sched_dma.map,
>		    BUS_DMASYNC_PREWRITE);
>	}
>}
>
>#ifdef notyet
>static void
>iwn5000_reset_sched(struct iwn_softc *sc, int qid, int idx)
>{
>	uint16_t *w = &sc->sched[qid * IWN5000_SCHED_COUNT + idx];
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
>
>	*w = (*w & htole16(0xf000)) | htole16(1);
>	bus_dmamap_sync(sc->sched_dma.tag, sc->sched_dma.map,
>	    BUS_DMASYNC_PREWRITE);
>	if (idx < IWN_SCHED_WINSZ) {
>		*(w + IWN_TX_RING_COUNT) = *w;
>		bus_dmamap_sync(sc->sched_dma.tag, sc->sched_dma.map,
>		    BUS_DMASYNC_PREWRITE);
>	}
>}
>#endif
>
>/*
> * Check whether OFDM 11g protection will be enabled for the given rate.
> *
> * The original driver code only enabled protection for OFDM rates.
> * It didn't check to see whether it was operating in 11a or 11bg mode.
> */
>static int
>iwn_check_rate_needs_protection(struct iwn_softc *sc,
>    struct ieee80211vap *vap, uint8_t rate)
>{
>	struct ieee80211com *ic = vap->iv_ic;
>
>	/*
>	 * Not in 2GHz mode? Then there's no need to enable OFDM
>	 * 11bg protection.
>	 */
>	if (! IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) {
>		return (0);
>	}
>
>	/*
>	 * 11bg protection not enabled? Then don't use it.
>	 */
>	if ((ic->ic_flags & IEEE80211_F_USEPROT) == 0)
>		return (0);
>
>	/*
>	 * If it's an 11n rate - no protection.
>	 * We'll do it via a specific 11n check.
>	 */
>	if (rate & IEEE80211_RATE_MCS) {
>		return (0);
>	}
>
>	/*
>	 * Do a rate table lookup.  If the PHY is CCK,
>	 * don't do protection.
>	 */
>	if (ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_CCK)
>		return (0);
>
>	/*
>	 * Yup, enable protection.
>	 */
>	return (1);
>}
>
>/*
> * return a value between 0 and IWN_MAX_TX_RETRIES-1 as an index into
> * the link quality table that reflects this particular entry.
> */
>static int
>iwn_tx_rate_to_linkq_offset(struct iwn_softc *sc, struct ieee80211_node *ni,
>    uint8_t rate)
>{
>	struct ieee80211_rateset *rs;
>	int is_11n;
>	int nr;
>	int i;
>	uint8_t cmp_rate;
>
>	/*
>	 * Figure out if we're using 11n or not here.
>	 */
>	if (IEEE80211_IS_CHAN_HT(ni->ni_chan) && ni->ni_htrates.rs_nrates > 0)
>		is_11n = 1;
>	else
>		is_11n = 0;
>
>	/*
>	 * Use the correct rate table.
>	 */
>	if (is_11n) {
>		rs = (struct ieee80211_rateset *) &ni->ni_htrates;
>		nr = ni->ni_htrates.rs_nrates;
>	} else {
>		rs = &ni->ni_rates;
>		nr = rs->rs_nrates;
>	}
>
>	/*
>	 * Find the relevant link quality entry in the table.
>	 */
>	for (i = 0; i < nr && i < IWN_MAX_TX_RETRIES - 1 ; i++) {
>		/*
>		 * The link quality table index starts at 0 == highest
>		 * rate, so we walk the rate table backwards.
>		 */
>		cmp_rate = rs->rs_rates[(nr - 1) - i];
>		if (rate & IEEE80211_RATE_MCS)
>			cmp_rate |= IEEE80211_RATE_MCS;
>
>#if 0
>		DPRINTF(sc, IWN_DEBUG_XMIT, "%s: idx %d: nr=%d, rate=0x%02x, rateentry=0x%02x\n",
>		    __func__,
>		    i,
>		    nr,
>		    rate,
>		    cmp_rate);
>#endif
>
>		if (cmp_rate == rate)
>			return (i);
>	}
>
>	/* Failed? Start at the end */
>	return (IWN_MAX_TX_RETRIES - 1);
>}
>
>static int
>iwn_tx_data(struct iwn_softc *sc, struct mbuf *m, struct ieee80211_node *ni)
>{
>	struct iwn_ops *ops = &sc->ops;
>	const struct ieee80211_txparam *tp;
>	struct ieee80211vap *vap = ni->ni_vap;
>	struct ieee80211com *ic = ni->ni_ic;
>	struct iwn_node *wn = (void *)ni;
>	struct iwn_tx_ring *ring;
>	struct iwn_tx_desc *desc;
>	struct iwn_tx_data *data;
>	struct iwn_tx_cmd *cmd;
>	struct iwn_cmd_data *tx;
>	struct ieee80211_frame *wh;
>	struct ieee80211_key *k = NULL;
>	struct mbuf *m1;
>	uint32_t flags;
>	uint16_t qos;
>	u_int hdrlen;
>	bus_dma_segment_t *seg, segs[IWN_MAX_SCATTER];
>	uint8_t tid, type;
>	int ac, i, totlen, error, pad, nsegs = 0, rate;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
>
>	IWN_LOCK_ASSERT(sc);
>
>	wh = mtod(m, struct ieee80211_frame *);
>	hdrlen = ieee80211_anyhdrsize(wh);
>	type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
>
>	/* Select EDCA Access Category and TX ring for this frame. */
>	if (IEEE80211_QOS_HAS_SEQ(wh)) {
>		qos = ((const struct ieee80211_qosframe *)wh)->i_qos[0];
>		tid = qos & IEEE80211_QOS_TID;
>	} else {
>		qos = 0;
>		tid = 0;
>	}
>	ac = M_WME_GETAC(m);
>	if (m->m_flags & M_AMPDU_MPDU) {
>		uint16_t seqno;
>		struct ieee80211_tx_ampdu *tap = &ni->ni_tx_ampdu[ac];
>
>		if (!IEEE80211_AMPDU_RUNNING(tap)) {
>			return EINVAL;
>		}
>
>		/*
>		 * Queue this frame to the hardware ring that we've
>		 * negotiated AMPDU TX on.
>		 *
>		 * Note that the sequence number must match the TX slot
>		 * being used!
>		 */
>		ac = *(int *)tap->txa_private;
>		seqno = ni->ni_txseqs[tid];
>		*(uint16_t *)wh->i_seq =
>		    htole16(seqno << IEEE80211_SEQ_SEQ_SHIFT);
>		ring = &sc->txq[ac];
>		if ((seqno % 256) != ring->cur) {
>			device_printf(sc->sc_dev,
>			    "%s: m=%p: seqno (%d) (%d) != ring index (%d) !\n",
>			    __func__,
>			    m,
>			    seqno,
>			    seqno % 256,
>			    ring->cur);
>		}
>		ni->ni_txseqs[tid]++;
>	}
>	ring = &sc->txq[ac];
>	desc = &ring->desc[ring->cur];
>	data = &ring->data[ring->cur];
>
>	/* Choose a TX rate index. */
>	tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)];
>	if (type == IEEE80211_FC0_TYPE_MGT)
>		rate = tp->mgmtrate;
>	else if (IEEE80211_IS_MULTICAST(wh->i_addr1))
>		rate = tp->mcastrate;
>	else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE)
>		rate = tp->ucastrate;
>	else if (m->m_flags & M_EAPOL)
>		rate = tp->mgmtrate;
>	else {
>		/* XXX pass pktlen */
>		(void) ieee80211_ratectl_rate(ni, NULL, 0);
>		rate = ni->ni_txrate;
>	}
>
>	/* Encrypt the frame if need be. */
>	if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) {
>		/* Retrieve key for TX. */
>		k = ieee80211_crypto_encap(ni, m);
>		if (k == NULL) {
>			return ENOBUFS;
>		}
>		/* 802.11 header may have moved. */
>		wh = mtod(m, struct ieee80211_frame *);
>	}
>	totlen = m->m_pkthdr.len;
>
>	if (ieee80211_radiotap_active_vap(vap)) {
>		struct iwn_tx_radiotap_header *tap = &sc->sc_txtap;
>
>		tap->wt_flags = 0;
>		tap->wt_rate = rate;
>		if (k != NULL)
>			tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP;
>
>		ieee80211_radiotap_tx(vap, m);
>	}
>
>	/* Prepare TX firmware command. */
>	cmd = &ring->cmd[ring->cur];
>	cmd->code = IWN_CMD_TX_DATA;
>	cmd->flags = 0;
>	cmd->qid = ring->qid;
>	cmd->idx = ring->cur;
>
>	tx = (struct iwn_cmd_data *)cmd->data;
>	/* NB: No need to clear tx, all fields are reinitialized here. */
>	tx->scratch = 0;	/* clear "scratch" area */
>
>	flags = 0;
>	if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
>		/* Unicast frame, check if an ACK is expected. */
>		if (!qos || (qos & IEEE80211_QOS_ACKPOLICY) !=
>		    IEEE80211_QOS_ACKPOLICY_NOACK)
>			flags |= IWN_TX_NEED_ACK;
>	}
>	if ((wh->i_fc[0] &
>	    (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) ==
>	    (IEEE80211_FC0_TYPE_CTL | IEEE80211_FC0_SUBTYPE_BAR))
>		flags |= IWN_TX_IMM_BA;		/* Cannot happen yet. */
>
>	if (wh->i_fc[1] & IEEE80211_FC1_MORE_FRAG)
>		flags |= IWN_TX_MORE_FRAG;	/* Cannot happen yet. */
>
>	/* Check if frame must be protected using RTS/CTS or CTS-to-self. */
>	if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
>		/* NB: Group frames are sent using CCK in 802.11b/g. */
>		if (totlen + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) {
>			flags |= IWN_TX_NEED_RTS;
>		} else if (iwn_check_rate_needs_protection(sc, vap, rate)) {
>			if (ic->ic_protmode == IEEE80211_PROT_CTSONLY)
>				flags |= IWN_TX_NEED_CTS;
>			else if (ic->ic_protmode == IEEE80211_PROT_RTSCTS)
>				flags |= IWN_TX_NEED_RTS;
>		} else if ((rate & IEEE80211_RATE_MCS) &&
>			(ic->ic_htprotmode == IEEE80211_PROT_RTSCTS)) {
>			flags |= IWN_TX_NEED_RTS;
>		}
>
>		/* XXX HT protection? */
>
>		if (flags & (IWN_TX_NEED_RTS | IWN_TX_NEED_CTS)) {
>			if (sc->hw_type != IWN_HW_REV_TYPE_4965) {
>				/* 5000 autoselects RTS/CTS or CTS-to-self. */
>				flags &= ~(IWN_TX_NEED_RTS | IWN_TX_NEED_CTS);
>				flags |= IWN_TX_NEED_PROTECTION;
>			} else
>				flags |= IWN_TX_FULL_TXOP;
>		}
>	}
>
>	if (IEEE80211_IS_MULTICAST(wh->i_addr1) ||
>	    type != IEEE80211_FC0_TYPE_DATA)
>		tx->id = sc->broadcast_id;
>	else
>		tx->id = wn->id;
>
>	if (type == IEEE80211_FC0_TYPE_MGT) {
>		uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
>
>		/* Tell HW to set timestamp in probe responses. */
>		if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP)
>			flags |= IWN_TX_INSERT_TSTAMP;
>		if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ ||
>		    subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ)
>			tx->timeout = htole16(3);
>		else
>			tx->timeout = htole16(2);
>	} else
>		tx->timeout = htole16(0);
>
>	if (hdrlen & 3) {
>		/* First segment length must be a multiple of 4. */
>		flags |= IWN_TX_NEED_PADDING;
>		pad = 4 - (hdrlen & 3);
>	} else
>		pad = 0;
>
>	tx->len = htole16(totlen);
>	tx->tid = tid;
>	tx->rts_ntries = 60;
>	tx->data_ntries = 15;
>	tx->lifetime = htole32(IWN_LIFETIME_INFINITE);
>	tx->rate = iwn_rate_to_plcp(sc, ni, rate);
>	if (tx->id == sc->broadcast_id) {
>		/* Group or management frame. */
>		tx->linkq = 0;
>	} else {
>		tx->linkq = iwn_tx_rate_to_linkq_offset(sc, ni, rate);
>		flags |= IWN_TX_LINKQ;	/* enable MRR */
>	}
>
>	/* Set physical address of "scratch area". */
>	tx->loaddr = htole32(IWN_LOADDR(data->scratch_paddr));
>	tx->hiaddr = IWN_HIADDR(data->scratch_paddr);
>
>	/* Copy 802.11 header in TX command. */
>	memcpy((uint8_t *)(tx + 1), wh, hdrlen);
>
>	/* Trim 802.11 header. */
>	m_adj(m, hdrlen);
>	tx->security = 0;
>	tx->flags = htole32(flags);
>
>	error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, m, segs,
>	    &nsegs, BUS_DMA_NOWAIT);
>	if (error != 0) {
>		if (error != EFBIG) {
>			device_printf(sc->sc_dev,
>			    "%s: can't map mbuf (error %d)\n", __func__, error);
>			return error;
>		}
>		/* Too many DMA segments, linearize mbuf. */
>		m1 = m_collapse(m, M_NOWAIT, IWN_MAX_SCATTER - 1);
>		if (m1 == NULL) {
>			device_printf(sc->sc_dev,
>			    "%s: could not defrag mbuf\n", __func__);
>			return ENOBUFS;
>		}
>		m = m1;
>
>		error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, m,
>		    segs, &nsegs, BUS_DMA_NOWAIT);
>		if (error != 0) {
>			device_printf(sc->sc_dev,
>			    "%s: can't map mbuf (error %d)\n", __func__, error);
>			return error;
>		}
>	}
>
>	data->m = m;
>	data->ni = ni;
>
>	DPRINTF(sc, IWN_DEBUG_XMIT,
>	    "%s: qid %d idx %d len %d nsegs %d flags 0x%08x rate 0x%04x plcp 0x%08x\n",
>	    __func__,
>	    ring->qid,
>	    ring->cur,
>	    m->m_pkthdr.len,
>	    nsegs,
>	    flags,
>	    rate,
>	    tx->rate);
>
>	/* Fill TX descriptor. */
>	desc->nsegs = 1;
>	if (m->m_len != 0)
>		desc->nsegs += nsegs;
>	/* First DMA segment is used by the TX command. */
>	desc->segs[0].addr = htole32(IWN_LOADDR(data->cmd_paddr));
>	desc->segs[0].len  = htole16(IWN_HIADDR(data->cmd_paddr) |
>	    (4 + sizeof (*tx) + hdrlen + pad) << 4);
>	/* Other DMA segments are for data payload. */
>	seg = &segs[0];
>	for (i = 1; i <= nsegs; i++) {
>		desc->segs[i].addr = htole32(IWN_LOADDR(seg->ds_addr));
>		desc->segs[i].len  = htole16(IWN_HIADDR(seg->ds_addr) |
>		    seg->ds_len << 4);
>		seg++;
>	}
>
>	bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE);
>	bus_dmamap_sync(ring->data_dmat, ring->cmd_dma.map,
>	    BUS_DMASYNC_PREWRITE);
>	bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
>	    BUS_DMASYNC_PREWRITE);
>
>	/* Update TX scheduler. */
>	if (ring->qid >= sc->firstaggqueue)
>		ops->update_sched(sc, ring->qid, ring->cur, tx->id, totlen);
>
>	/* Kick TX ring. */
>	ring->cur = (ring->cur + 1) % IWN_TX_RING_COUNT;
>	IWN_WRITE(sc, IWN_HBUS_TARG_WRPTR, ring->qid << 8 | ring->cur);
>
>	/* Mark TX ring as full if we reach a certain threshold. */
>	if (++ring->queued > IWN_TX_RING_HIMARK)
>		sc->qfullmsk |= 1 << ring->qid;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__);
>
>	return 0;
>}
>
>static int
>iwn_tx_data_raw(struct iwn_softc *sc, struct mbuf *m,
>    struct ieee80211_node *ni, const struct ieee80211_bpf_params *params)
>{
>	struct iwn_ops *ops = &sc->ops;
>	struct ieee80211vap *vap = ni->ni_vap;
>	struct iwn_tx_cmd *cmd;
>	struct iwn_cmd_data *tx;
>	struct ieee80211_frame *wh;
>	struct iwn_tx_ring *ring;
>	struct iwn_tx_desc *desc;
>	struct iwn_tx_data *data;
>	struct mbuf *m1;
>	bus_dma_segment_t *seg, segs[IWN_MAX_SCATTER];
>	uint32_t flags;
>	u_int hdrlen;
>	int ac, totlen, error, pad, nsegs = 0, i, rate;
>	uint8_t type;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
>
>	IWN_LOCK_ASSERT(sc);
>
>	wh = mtod(m, struct ieee80211_frame *);
>	hdrlen = ieee80211_anyhdrsize(wh);
>	type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
>
>	ac = params->ibp_pri & 3;
>
>	ring = &sc->txq[ac];
>	desc = &ring->desc[ring->cur];
>	data = &ring->data[ring->cur];
>
>	/* Choose a TX rate. */
>	rate = params->ibp_rate0;
>	totlen = m->m_pkthdr.len;
>
>	/* Prepare TX firmware command. */
>	cmd = &ring->cmd[ring->cur];
>	cmd->code = IWN_CMD_TX_DATA;
>	cmd->flags = 0;
>	cmd->qid = ring->qid;
>	cmd->idx = ring->cur;
>
>	tx = (struct iwn_cmd_data *)cmd->data;
>	/* NB: No need to clear tx, all fields are reinitialized here. */
>	tx->scratch = 0;	/* clear "scratch" area */
>
>	flags = 0;
>	if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0)
>		flags |= IWN_TX_NEED_ACK;
>	if (params->ibp_flags & IEEE80211_BPF_RTS) {
>		if (sc->hw_type != IWN_HW_REV_TYPE_4965) {
>			/* 5000 autoselects RTS/CTS or CTS-to-self. */
>			flags &= ~IWN_TX_NEED_RTS;
>			flags |= IWN_TX_NEED_PROTECTION;
>		} else
>			flags |= IWN_TX_NEED_RTS | IWN_TX_FULL_TXOP;
>	}
>	if (params->ibp_flags & IEEE80211_BPF_CTS) {
>		if (sc->hw_type != IWN_HW_REV_TYPE_4965) {
>			/* 5000 autoselects RTS/CTS or CTS-to-self. */
>			flags &= ~IWN_TX_NEED_CTS;
>			flags |= IWN_TX_NEED_PROTECTION;
>		} else
>			flags |= IWN_TX_NEED_CTS | IWN_TX_FULL_TXOP;
>	}
>	if (type == IEEE80211_FC0_TYPE_MGT) {
>		uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
>
>		/* Tell HW to set timestamp in probe responses. */
>		if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP)
>			flags |= IWN_TX_INSERT_TSTAMP;
>
>		if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ ||
>		    subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ)
>			tx->timeout = htole16(3);
>		else
>			tx->timeout = htole16(2);
>	} else
>		tx->timeout = htole16(0);
>
>	if (hdrlen & 3) {
>		/* First segment length must be a multiple of 4. */
>		flags |= IWN_TX_NEED_PADDING;
>		pad = 4 - (hdrlen & 3);
>	} else
>		pad = 0;
>
>	if (ieee80211_radiotap_active_vap(vap)) {
>		struct iwn_tx_radiotap_header *tap = &sc->sc_txtap;
>
>		tap->wt_flags = 0;
>		tap->wt_rate = rate;
>
>		ieee80211_radiotap_tx(vap, m);
>	}
>
>	tx->len = htole16(totlen);
>	tx->tid = 0;
>	tx->id = sc->broadcast_id;
>	tx->rts_ntries = params->ibp_try1;
>	tx->data_ntries = params->ibp_try0;
>	tx->lifetime = htole32(IWN_LIFETIME_INFINITE);
>	tx->rate = iwn_rate_to_plcp(sc, ni, rate);
>
>	/* Group or management frame. */
>	tx->linkq = 0;
>
>	/* Set physical address of "scratch area". */
>	tx->loaddr = htole32(IWN_LOADDR(data->scratch_paddr));
>	tx->hiaddr = IWN_HIADDR(data->scratch_paddr);
>
>	/* Copy 802.11 header in TX command. */
>	memcpy((uint8_t *)(tx + 1), wh, hdrlen);
>
>	/* Trim 802.11 header. */
>	m_adj(m, hdrlen);
>	tx->security = 0;
>	tx->flags = htole32(flags);
>
>	error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, m, segs,
>	    &nsegs, BUS_DMA_NOWAIT);
>	if (error != 0) {
>		if (error != EFBIG) {
>			device_printf(sc->sc_dev,
>			    "%s: can't map mbuf (error %d)\n", __func__, error);
>			return error;
>		}
>		/* Too many DMA segments, linearize mbuf. */
>		m1 = m_collapse(m, M_NOWAIT, IWN_MAX_SCATTER - 1);
>		if (m1 == NULL) {
>			device_printf(sc->sc_dev,
>			    "%s: could not defrag mbuf\n", __func__);
>			return ENOBUFS;
>		}
>		m = m1;
>
>		error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, m,
>		    segs, &nsegs, BUS_DMA_NOWAIT);
>		if (error != 0) {
>			device_printf(sc->sc_dev,
>			    "%s: can't map mbuf (error %d)\n", __func__, error);
>			return error;
>		}
>	}
>
>	data->m = m;
>	data->ni = ni;
>
>	DPRINTF(sc, IWN_DEBUG_XMIT, "%s: qid %d idx %d len %d nsegs %d\n",
>	    __func__, ring->qid, ring->cur, m->m_pkthdr.len, nsegs);
>
>	/* Fill TX descriptor. */
>	desc->nsegs = 1;
>	if (m->m_len != 0)
>		desc->nsegs += nsegs;
>	/* First DMA segment is used by the TX command. */
>	desc->segs[0].addr = htole32(IWN_LOADDR(data->cmd_paddr));
>	desc->segs[0].len  = htole16(IWN_HIADDR(data->cmd_paddr) |
>	    (4 + sizeof (*tx) + hdrlen + pad) << 4);
>	/* Other DMA segments are for data payload. */
>	seg = &segs[0];
>	for (i = 1; i <= nsegs; i++) {
>		desc->segs[i].addr = htole32(IWN_LOADDR(seg->ds_addr));
>		desc->segs[i].len  = htole16(IWN_HIADDR(seg->ds_addr) |
>		    seg->ds_len << 4);
>		seg++;
>	}
>
>	bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE);
>	bus_dmamap_sync(ring->data_dmat, ring->cmd_dma.map,
>	    BUS_DMASYNC_PREWRITE);
>	bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
>	    BUS_DMASYNC_PREWRITE);
>
>	/* Update TX scheduler. */
>	if (ring->qid >= sc->firstaggqueue)
>		ops->update_sched(sc, ring->qid, ring->cur, tx->id, totlen);
>
>	/* Kick TX ring. */
>	ring->cur = (ring->cur + 1) % IWN_TX_RING_COUNT;
>	IWN_WRITE(sc, IWN_HBUS_TARG_WRPTR, ring->qid << 8 | ring->cur);
>
>	/* Mark TX ring as full if we reach a certain threshold. */
>	if (++ring->queued > IWN_TX_RING_HIMARK)
>		sc->qfullmsk |= 1 << ring->qid;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__);
>
>	return 0;
>}
>
>static void
>iwn_xmit_task(void *arg0, int pending)
>{
>	struct iwn_softc *sc = arg0;
>	struct ieee80211_node *ni;
>	struct mbuf *m;
>	int error;
>	struct ieee80211_bpf_params p;
>	int have_p;
>
>	DPRINTF(sc, IWN_DEBUG_XMIT, "%s: called\n", __func__);
>
>	IWN_LOCK(sc);
>	/*
>	 * Dequeue frames, attempt to transmit,
>	 * then disable beaconwait when we're done.
>	 */
>	while ((m = mbufq_dequeue(&sc->sc_xmit_queue)) != NULL) {
>		have_p = 0;
>		ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
>
>		/* Get xmit params if appropriate */
>		if (ieee80211_get_xmit_params(m, &p) == 0)
>			have_p = 1;
>
>		DPRINTF(sc, IWN_DEBUG_XMIT, "%s: m=%p, have_p=%d\n",
>		    __func__, m, have_p);
>
>		/* If we have xmit params, use them */
>		if (have_p)
>			error = iwn_tx_data_raw(sc, m, ni, &p);
>		else
>			error = iwn_tx_data(sc, m, ni);
>
>		if (error != 0) {
>			if_inc_counter(ni->ni_vap->iv_ifp,
>			    IFCOUNTER_OERRORS, 1);
>			ieee80211_free_node(ni);
>			m_freem(m);
>		}
>	}
>
>	sc->sc_beacon_wait = 0;
>	IWN_UNLOCK(sc);
>}
>
>/*
> * raw frame xmit - free node/reference if failed.
> */
>static int
>iwn_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
>    const struct ieee80211_bpf_params *params)
>{
>	struct ieee80211com *ic = ni->ni_ic;
>	struct iwn_softc *sc = ic->ic_softc;
>	int error = 0;
>
>	DPRINTF(sc, IWN_DEBUG_XMIT | IWN_DEBUG_TRACE, "->%s begin\n", __func__);
>
>	IWN_LOCK(sc);
>	if ((sc->sc_flags & IWN_FLAG_RUNNING) == 0) {
>		m_freem(m);
>		IWN_UNLOCK(sc);
>		return (ENETDOWN);
>	}
>
>	/* queue frame if we have to */
>	if (sc->sc_beacon_wait) {
>		if (iwn_xmit_queue_enqueue(sc, m) != 0) {
>			m_freem(m);
>			IWN_UNLOCK(sc);
>			return (ENOBUFS);
>		}
>		/* Queued, so just return OK */
>		IWN_UNLOCK(sc);
>		return (0);
>	}
>
>	if (params == NULL) {
>		/*
>		 * Legacy path; interpret frame contents to decide
>		 * precisely how to send the frame.
>		 */
>		error = iwn_tx_data(sc, m, ni);
>	} else {
>		/*
>		 * Caller supplied explicit parameters to use in
>		 * sending the frame.
>		 */
>		error = iwn_tx_data_raw(sc, m, ni, params);
>	}
>	if (error == 0)
>		sc->sc_tx_timer = 5;
>	else
>		m_freem(m);
>
>	IWN_UNLOCK(sc);
>
>	DPRINTF(sc, IWN_DEBUG_TRACE | IWN_DEBUG_XMIT, "->%s: end\n",__func__);
>
>	return (error);
>}
>
>/*
> * transmit - don't free mbuf if failed; don't free node ref if failed.
> */
>static int
>iwn_transmit(struct ieee80211com *ic, struct mbuf *m)
>{
>	struct iwn_softc *sc = ic->ic_softc;
>	struct ieee80211_node *ni;
>	int error;
>
>	ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
>
>	IWN_LOCK(sc);
>	if ((sc->sc_flags & IWN_FLAG_RUNNING) == 0 || sc->sc_beacon_wait) {
>		IWN_UNLOCK(sc);
>		return (ENXIO);
>	}
>
>	if (sc->qfullmsk) {
>		IWN_UNLOCK(sc);
>		return (ENOBUFS);
>	}
>
>	error = iwn_tx_data(sc, m, ni);
>	if (!error)
>		sc->sc_tx_timer = 5;
>	IWN_UNLOCK(sc);
>	return (error);
>}
>
>static void
>iwn_scan_timeout(void *arg)
>{
>	struct iwn_softc *sc = arg;
>	struct ieee80211com *ic = &sc->sc_ic;
>
>	ic_printf(ic, "scan timeout\n");
>	ieee80211_restart_all(ic);
>}
>
>static void
>iwn_watchdog(void *arg)
>{
>	struct iwn_softc *sc = arg;
>	struct ieee80211com *ic = &sc->sc_ic;
>
>	IWN_LOCK_ASSERT(sc);
>
>	KASSERT(sc->sc_flags & IWN_FLAG_RUNNING, ("not running"));
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
>
>	if (sc->sc_tx_timer > 0) {
>		if (--sc->sc_tx_timer == 0) {
>			ic_printf(ic, "device timeout\n");
>			ieee80211_restart_all(ic);
>			return;
>		}
>	}
>	callout_reset(&sc->watchdog_to, hz, iwn_watchdog, sc);
>}
>
>static int
>iwn_cdev_open(struct cdev *dev, int flags, int type, struct thread *td)
>{
>
>	return (0);
>}
>
>static int
>iwn_cdev_close(struct cdev *dev, int flags, int type, struct thread *td)
>{
>
>	return (0);
>}
>
>static int
>iwn_cdev_ioctl(struct cdev *dev, unsigned long cmd, caddr_t data, int fflag,
>    struct thread *td)
>{
>	int rc;
>	struct iwn_softc *sc = dev->si_drv1;
>	struct iwn_ioctl_data *d;
>
>	rc = priv_check(td, PRIV_DRIVER);
>	if (rc != 0)
>		return (0);
>
>	switch (cmd) {
>	case SIOCGIWNSTATS:
>		d = (struct iwn_ioctl_data *) data;
>		IWN_LOCK(sc);
>		/* XXX validate permissions/memory/etc? */
>		rc = copyout(&sc->last_stat, d->dst_addr, sizeof(struct iwn_stats));
>		IWN_UNLOCK(sc);
>		break;
>	case SIOCZIWNSTATS:
>		IWN_LOCK(sc);
>		memset(&sc->last_stat, 0, sizeof(struct iwn_stats));
>		IWN_UNLOCK(sc);
>		break;
>	default:
>		rc = EINVAL;
>		break;
>	}
>	return (rc);
>}
>
>static int
>iwn_ioctl(struct ieee80211com *ic, u_long cmd, void *data)
>{
>
>	return (ENOTTY);
>}
>
>static void
>iwn_parent(struct ieee80211com *ic)
>{
>	struct iwn_softc *sc = ic->ic_softc;
>	struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
>	int startall = 0, stop = 0;
> 
>	IWN_LOCK(sc);
>	if (ic->ic_nrunning > 0) {
>		if (!(sc->sc_flags & IWN_FLAG_RUNNING)) {
>			iwn_init_locked(sc);
>			if (IWN_READ(sc, IWN_GP_CNTRL) & IWN_GP_CNTRL_RFKILL)
>				startall = 1;
>			else
>				stop = 1;
>		}
>	} else if (sc->sc_flags & IWN_FLAG_RUNNING)
>		iwn_stop_locked(sc);
>	IWN_UNLOCK(sc);
>	if (startall)
>		ieee80211_start_all(ic);
>	else if (vap != NULL && stop)
>		ieee80211_stop(vap);
>}
>
>/*
> * Send a command to the firmware.
> */
>static int
>iwn_cmd(struct iwn_softc *sc, int code, const void *buf, int size, int async)
>{
>	struct iwn_tx_ring *ring;
>	struct iwn_tx_desc *desc;
>	struct iwn_tx_data *data;
>	struct iwn_tx_cmd *cmd;
>	struct mbuf *m;
>	bus_addr_t paddr;
>	int totlen, error;
>	int cmd_queue_num;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
>
>	if (async == 0)
>		IWN_LOCK_ASSERT(sc);
>
>	if (sc->sc_flags & IWN_FLAG_PAN_SUPPORT)
>		cmd_queue_num = IWN_PAN_CMD_QUEUE;
>	else
>		cmd_queue_num = IWN_CMD_QUEUE_NUM;
>
>	ring = &sc->txq[cmd_queue_num];
>	desc = &ring->desc[ring->cur];
>	data = &ring->data[ring->cur];
>	totlen = 4 + size;
>
>	if (size > sizeof cmd->data) {
>		/* Command is too large to fit in a descriptor. */
>		if (totlen > MCLBYTES)
>			return EINVAL;
>		m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE);
>		if (m == NULL)
>			return ENOMEM;
>		cmd = mtod(m, struct iwn_tx_cmd *);
>		error = bus_dmamap_load(ring->data_dmat, data->map, cmd,
>		    totlen, iwn_dma_map_addr, &paddr, BUS_DMA_NOWAIT);
>		if (error != 0) {
>			m_freem(m);
>			return error;
>		}
>		data->m = m;
>	} else {
>		cmd = &ring->cmd[ring->cur];
>		paddr = data->cmd_paddr;
>	}
>
>	cmd->code = code;
>	cmd->flags = 0;
>	cmd->qid = ring->qid;
>	cmd->idx = ring->cur;
>	memcpy(cmd->data, buf, size);
>
>	desc->nsegs = 1;
>	desc->segs[0].addr = htole32(IWN_LOADDR(paddr));
>	desc->segs[0].len  = htole16(IWN_HIADDR(paddr) | totlen << 4);
>
>	DPRINTF(sc, IWN_DEBUG_CMD, "%s: %s (0x%x) flags %d qid %d idx %d\n",
>	    __func__, iwn_intr_str(cmd->code), cmd->code,
>	    cmd->flags, cmd->qid, cmd->idx);
>
>	if (size > sizeof cmd->data) {
>		bus_dmamap_sync(ring->data_dmat, data->map,
>		    BUS_DMASYNC_PREWRITE);
>	} else {
>		bus_dmamap_sync(ring->data_dmat, ring->cmd_dma.map,
>		    BUS_DMASYNC_PREWRITE);
>	}
>	bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
>	    BUS_DMASYNC_PREWRITE);
>
>	/* Kick command ring. */
>	ring->cur = (ring->cur + 1) % IWN_TX_RING_COUNT;
>	IWN_WRITE(sc, IWN_HBUS_TARG_WRPTR, ring->qid << 8 | ring->cur);
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__);
>
>	return async ? 0 : msleep(desc, &sc->sc_mtx, PCATCH, "iwncmd", hz);
>}
>
>static int
>iwn4965_add_node(struct iwn_softc *sc, struct iwn_node_info *node, int async)
>{
>	struct iwn4965_node_info hnode;
>	caddr_t src, dst;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
>
>	/*
>	 * We use the node structure for 5000 Series internally (it is
>	 * a superset of the one for 4965AGN). We thus copy the common
>	 * fields before sending the command.
>	 */
>	src = (caddr_t)node;
>	dst = (caddr_t)&hnode;
>	memcpy(dst, src, 48);
>	/* Skip TSC, RX MIC and TX MIC fields from ``src''. */
>	memcpy(dst + 48, src + 72, 20);
>	return iwn_cmd(sc, IWN_CMD_ADD_NODE, &hnode, sizeof hnode, async);
>}
>
>static int
>iwn5000_add_node(struct iwn_softc *sc, struct iwn_node_info *node, int async)
>{
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
>
>	/* Direct mapping. */
>	return iwn_cmd(sc, IWN_CMD_ADD_NODE, node, sizeof (*node), async);
>}
>
>static int
>iwn_set_link_quality(struct iwn_softc *sc, struct ieee80211_node *ni)
>{
>	struct iwn_node *wn = (void *)ni;
>	struct ieee80211_rateset *rs;
>	struct iwn_cmd_link_quality linkq;
>	int i, rate, txrate;
>	int is_11n;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
>
>	memset(&linkq, 0, sizeof linkq);
>	linkq.id = wn->id;
>	linkq.antmsk_1stream = iwn_get_1stream_tx_antmask(sc);
>	linkq.antmsk_2stream = iwn_get_2stream_tx_antmask(sc);
>
>	linkq.ampdu_max = 32;		/* XXX negotiated? */
>	linkq.ampdu_threshold = 3;
>	linkq.ampdu_limit = htole16(4000);	/* 4ms */
>
>	DPRINTF(sc, IWN_DEBUG_XMIT,
>	    "%s: 1stream antenna=0x%02x, 2stream antenna=0x%02x, ntxstreams=%d\n",
>	    __func__,
>	    linkq.antmsk_1stream,
>	    linkq.antmsk_2stream,
>	    sc->ntxchains);
>
>	/*
>	 * Are we using 11n rates? Ensure the channel is
>	 * 11n _and_ we have some 11n rates, or don't
>	 * try.
>	 */
>	if (IEEE80211_IS_CHAN_HT(ni->ni_chan) && ni->ni_htrates.rs_nrates > 0) {
>		rs = (struct ieee80211_rateset *) &ni->ni_htrates;
>		is_11n = 1;
>	} else {
>		rs = &ni->ni_rates;
>		is_11n = 0;
>	}
>
>	/* Start at highest available bit-rate. */
>	/*
>	 * XXX this is all very dirty!
>	 */
>	if (is_11n)
>		txrate = ni->ni_htrates.rs_nrates - 1;
>	else
>		txrate = rs->rs_nrates - 1;
>	for (i = 0; i < IWN_MAX_TX_RETRIES; i++) {
>		uint32_t plcp;
>
>		/*
>		 * XXX TODO: ensure the last two slots are the two lowest
>		 * rate entries, just for now.
>		 */
>		if (i == 14 || i == 15)
>			txrate = 0;
>
>		if (is_11n)
>			rate = IEEE80211_RATE_MCS | rs->rs_rates[txrate];
>		else
>			rate = IEEE80211_RV(rs->rs_rates[txrate]);
>
>		/* Do rate -> PLCP config mapping */
>		plcp = iwn_rate_to_plcp(sc, ni, rate);
>		linkq.retry[i] = plcp;
>		DPRINTF(sc, IWN_DEBUG_XMIT,
>		    "%s: i=%d, txrate=%d, rate=0x%02x, plcp=0x%08x\n",
>		    __func__,
>		    i,
>		    txrate,
>		    rate,
>		    le32toh(plcp));
>
>		/*
>		 * The mimo field is an index into the table which
>		 * indicates the first index where it and subsequent entries
>		 * will not be using MIMO.
>		 *
>		 * Since we're filling linkq from 0..15 and we're filling
>		 * from the highest MCS rates to the lowest rates, if we
>		 * _are_ doing a dual-stream rate, set mimo to idx+1 (ie,
>		 * the next entry.)  That way if the next entry is a non-MIMO
>		 * entry, we're already pointing at it.
>		 */
>		if ((le32toh(plcp) & IWN_RFLAG_MCS) &&
>		    IEEE80211_RV(le32toh(plcp)) > 7)
>			linkq.mimo = i + 1;
>
>		/* Next retry at immediate lower bit-rate. */
>		if (txrate > 0)
>			txrate--;
>	}
>	/*
>	 * If we reached the end of the list and indeed we hit
>	 * all MIMO rates (eg 5300 doing MCS23-15) then yes,
>	 * set mimo to 15.  Setting it to 16 panics the firmware.
>	 */
>	if (linkq.mimo > 15)
>		linkq.mimo = 15;
>
>	DPRINTF(sc, IWN_DEBUG_XMIT, "%s: mimo = %d\n", __func__, linkq.mimo);
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__);
>
>	return iwn_cmd(sc, IWN_CMD_LINK_QUALITY, &linkq, sizeof linkq, 1);
>}
>
>/*
> * Broadcast node is used to send group-addressed and management frames.
> */
>static int
>iwn_add_broadcast_node(struct iwn_softc *sc, int async)
>{
>	struct iwn_ops *ops = &sc->ops;
>	struct ieee80211com *ic = &sc->sc_ic;
>	struct iwn_node_info node;
>	struct iwn_cmd_link_quality linkq;
>	uint8_t txant;
>	int i, error;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
>
>	sc->rxon = &sc->rx_on[IWN_RXON_BSS_CTX];
>
>	memset(&node, 0, sizeof node);
>	IEEE80211_ADDR_COPY(node.macaddr, ieee80211broadcastaddr);
>	node.id = sc->broadcast_id;
>	DPRINTF(sc, IWN_DEBUG_RESET, "%s: adding broadcast node\n", __func__);
>	if ((error = ops->add_node(sc, &node, async)) != 0)
>		return error;
>
>	/* Use the first valid TX antenna. */
>	txant = IWN_LSB(sc->txchainmask);
>
>	memset(&linkq, 0, sizeof linkq);
>	linkq.id = sc->broadcast_id;
>	linkq.antmsk_1stream = iwn_get_1stream_tx_antmask(sc);
>	linkq.antmsk_2stream = iwn_get_2stream_tx_antmask(sc);
>	linkq.ampdu_max = 64;
>	linkq.ampdu_threshold = 3;
>	linkq.ampdu_limit = htole16(4000);	/* 4ms */
>
>	/* Use lowest mandatory bit-rate. */
>	/* XXX rate table lookup? */
>	if (IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan))
>		linkq.retry[0] = htole32(0xd);
>	else
>		linkq.retry[0] = htole32(10 | IWN_RFLAG_CCK);
>	linkq.retry[0] |= htole32(IWN_RFLAG_ANT(txant));
>	/* Use same bit-rate for all TX retries. */
>	for (i = 1; i < IWN_MAX_TX_RETRIES; i++) {
>		linkq.retry[i] = linkq.retry[0];
>	}
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__);
>
>	return iwn_cmd(sc, IWN_CMD_LINK_QUALITY, &linkq, sizeof linkq, async);
>}
>
>static int
>iwn_updateedca(struct ieee80211com *ic)
>{
>#define IWN_EXP2(x)	((1 << (x)) - 1)	/* CWmin = 2^ECWmin - 1 */
>	struct iwn_softc *sc = ic->ic_softc;
>	struct iwn_edca_params cmd;
>	int aci;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
>
>	memset(&cmd, 0, sizeof cmd);
>	cmd.flags = htole32(IWN_EDCA_UPDATE);
>
>	IEEE80211_LOCK(ic);
>	for (aci = 0; aci < WME_NUM_AC; aci++) {
>		const struct wmeParams *ac =
>		    &ic->ic_wme.wme_chanParams.cap_wmeParams[aci];
>		cmd.ac[aci].aifsn = ac->wmep_aifsn;
>		cmd.ac[aci].cwmin = htole16(IWN_EXP2(ac->wmep_logcwmin));
>		cmd.ac[aci].cwmax = htole16(IWN_EXP2(ac->wmep_logcwmax));
>		cmd.ac[aci].txoplimit =
>		    htole16(IEEE80211_TXOP_TO_US(ac->wmep_txopLimit));
>	}
>	IEEE80211_UNLOCK(ic);
>
>	IWN_LOCK(sc);
>	(void)iwn_cmd(sc, IWN_CMD_EDCA_PARAMS, &cmd, sizeof cmd, 1);
>	IWN_UNLOCK(sc);
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__);
>
>	return 0;
>#undef IWN_EXP2
>}
>
>static void
>iwn_update_mcast(struct ieee80211com *ic)
>{
>	/* Ignore */
>}
>
>static void
>iwn_set_led(struct iwn_softc *sc, uint8_t which, uint8_t off, uint8_t on)
>{
>	struct iwn_cmd_led led;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
>
>#if 0
>	/* XXX don't set LEDs during scan? */
>	if (sc->sc_is_scanning)
>		return;
>#endif
>
>	/* Clear microcode LED ownership. */
>	IWN_CLRBITS(sc, IWN_LED, IWN_LED_BSM_CTRL);
>
>	led.which = which;
>	led.unit = htole32(10000);	/* on/off in unit of 100ms */
>	led.off = off;
>	led.on = on;
>	(void)iwn_cmd(sc, IWN_CMD_SET_LED, &led, sizeof led, 1);
>}
>
>/*
> * Set the critical temperature at which the firmware will stop the radio
> * and notify us.
> */
>static int
>iwn_set_critical_temp(struct iwn_softc *sc)
>{
>	struct iwn_critical_temp crit;
>	int32_t temp;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
>
>	IWN_WRITE(sc, IWN_UCODE_GP1_CLR, IWN_UCODE_GP1_CTEMP_STOP_RF);
>
>	if (sc->hw_type == IWN_HW_REV_TYPE_5150)
>		temp = (IWN_CTOK(110) - sc->temp_off) * -5;
>	else if (sc->hw_type == IWN_HW_REV_TYPE_4965)
>		temp = IWN_CTOK(110);
>	else
>		temp = 110;
>	memset(&crit, 0, sizeof crit);
>	crit.tempR = htole32(temp);
>	DPRINTF(sc, IWN_DEBUG_RESET, "setting critical temp to %d\n", temp);
>	return iwn_cmd(sc, IWN_CMD_SET_CRITICAL_TEMP, &crit, sizeof crit, 0);
>}
>
>static int
>iwn_set_timing(struct iwn_softc *sc, struct ieee80211_node *ni)
>{
>	struct iwn_cmd_timing cmd;
>	uint64_t val, mod;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
>
>	memset(&cmd, 0, sizeof cmd);
>	memcpy(&cmd.tstamp, ni->ni_tstamp.data, sizeof (uint64_t));
>	cmd.bintval = htole16(ni->ni_intval);
>	cmd.lintval = htole16(10);
>
>	/* Compute remaining time until next beacon. */
>	val = (uint64_t)ni->ni_intval * IEEE80211_DUR_TU;
>	mod = le64toh(cmd.tstamp) % val;
>	cmd.binitval = htole32((uint32_t)(val - mod));
>
>	DPRINTF(sc, IWN_DEBUG_RESET, "timing bintval=%u tstamp=%ju, init=%u\n",
>	    ni->ni_intval, le64toh(cmd.tstamp), (uint32_t)(val - mod));
>
>	return iwn_cmd(sc, IWN_CMD_TIMING, &cmd, sizeof cmd, 1);
>}
>
>static void
>iwn4965_power_calibration(struct iwn_softc *sc, int temp)
>{
>	struct ieee80211com *ic = &sc->sc_ic;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
>
>	/* Adjust TX power if need be (delta >= 3 degC). */
>	DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s: temperature %d->%d\n",
>	    __func__, sc->temp, temp);
>	if (abs(temp - sc->temp) >= 3) {
>		/* Record temperature of last calibration. */
>		sc->temp = temp;
>		(void)iwn4965_set_txpower(sc, ic->ic_bsschan, 1);
>	}
>}
>
>/*
> * Set TX power for current channel (each rate has its own power settings).
> * This function takes into account the regulatory information from EEPROM,
> * the current temperature and the current voltage.
> */
>static int
>iwn4965_set_txpower(struct iwn_softc *sc, struct ieee80211_channel *ch,
>    int async)
>{
>/* Fixed-point arithmetic division using a n-bit fractional part. */
>#define fdivround(a, b, n)	\
>	((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n))
>/* Linear interpolation. */
>#define interpolate(x, x1, y1, x2, y2, n)	\
>	((y1) + fdivround(((int)(x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n))
>
>	static const int tdiv[IWN_NATTEN_GROUPS] = { 9, 8, 8, 8, 6 };
>	struct iwn_ucode_info *uc = &sc->ucode_info;
>	struct iwn4965_cmd_txpower cmd;
>	struct iwn4965_eeprom_chan_samples *chans;
>	const uint8_t *rf_gain, *dsp_gain;
>	int32_t vdiff, tdiff;
>	int i, c, grp, maxpwr;
>	uint8_t chan;
>
>	sc->rxon = &sc->rx_on[IWN_RXON_BSS_CTX];
>	/* Retrieve current channel from last RXON. */
>	chan = sc->rxon->chan;
>	DPRINTF(sc, IWN_DEBUG_RESET, "setting TX power for channel %d\n",
>	    chan);
>
>	memset(&cmd, 0, sizeof cmd);
>	cmd.band = IEEE80211_IS_CHAN_5GHZ(ch) ? 0 : 1;
>	cmd.chan = chan;
>
>	if (IEEE80211_IS_CHAN_5GHZ(ch)) {
>		maxpwr   = sc->maxpwr5GHz;
>		rf_gain  = iwn4965_rf_gain_5ghz;
>		dsp_gain = iwn4965_dsp_gain_5ghz;
>	} else {
>		maxpwr   = sc->maxpwr2GHz;
>		rf_gain  = iwn4965_rf_gain_2ghz;
>		dsp_gain = iwn4965_dsp_gain_2ghz;
>	}
>
>	/* Compute voltage compensation. */
>	vdiff = ((int32_t)le32toh(uc->volt) - sc->eeprom_voltage) / 7;
>	if (vdiff > 0)
>		vdiff *= 2;
>	if (abs(vdiff) > 2)
>		vdiff = 0;
>	DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_TXPOW,
>	    "%s: voltage compensation=%d (UCODE=%d, EEPROM=%d)\n",
>	    __func__, vdiff, le32toh(uc->volt), sc->eeprom_voltage);
>
>	/* Get channel attenuation group. */
>	if (chan <= 20)		/* 1-20 */
>		grp = 4;
>	else if (chan <= 43)	/* 34-43 */
>		grp = 0;
>	else if (chan <= 70)	/* 44-70 */
>		grp = 1;
>	else if (chan <= 124)	/* 71-124 */
>		grp = 2;
>	else			/* 125-200 */
>		grp = 3;
>	DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_TXPOW,
>	    "%s: chan %d, attenuation group=%d\n", __func__, chan, grp);
>
>	/* Get channel sub-band. */
>	for (i = 0; i < IWN_NBANDS; i++)
>		if (sc->bands[i].lo != 0 &&
>		    sc->bands[i].lo <= chan && chan <= sc->bands[i].hi)
>			break;
>	if (i == IWN_NBANDS)	/* Can't happen in real-life. */
>		return EINVAL;
>	chans = sc->bands[i].chans;
>	DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_TXPOW,
>	    "%s: chan %d sub-band=%d\n", __func__, chan, i);
>
>	for (c = 0; c < 2; c++) {
>		uint8_t power, gain, temp;
>		int maxchpwr, pwr, ridx, idx;
>
>		power = interpolate(chan,
>		    chans[0].num, chans[0].samples[c][1].power,
>		    chans[1].num, chans[1].samples[c][1].power, 1);
>		gain  = interpolate(chan,
>		    chans[0].num, chans[0].samples[c][1].gain,
>		    chans[1].num, chans[1].samples[c][1].gain, 1);
>		temp  = interpolate(chan,
>		    chans[0].num, chans[0].samples[c][1].temp,
>		    chans[1].num, chans[1].samples[c][1].temp, 1);
>		DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_TXPOW,
>		    "%s: Tx chain %d: power=%d gain=%d temp=%d\n",
>		    __func__, c, power, gain, temp);
>
>		/* Compute temperature compensation. */
>		tdiff = ((sc->temp - temp) * 2) / tdiv[grp];
>		DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_TXPOW,
>		    "%s: temperature compensation=%d (current=%d, EEPROM=%d)\n",
>		    __func__, tdiff, sc->temp, temp);
>
>		for (ridx = 0; ridx <= IWN_RIDX_MAX; ridx++) {
>			/* Convert dBm to half-dBm. */
>			maxchpwr = sc->maxpwr[chan] * 2;
>			if ((ridx / 8) & 1)
>				maxchpwr -= 6;	/* MIMO 2T: -3dB */
>
>			pwr = maxpwr;
>
>			/* Adjust TX power based on rate. */
>			if ((ridx % 8) == 5)
>				pwr -= 15;	/* OFDM48: -7.5dB */
>			else if ((ridx % 8) == 6)
>				pwr -= 17;	/* OFDM54: -8.5dB */
>			else if ((ridx % 8) == 7)
>				pwr -= 20;	/* OFDM60: -10dB */
>			else
>				pwr -= 10;	/* Others: -5dB */
>
>			/* Do not exceed channel max TX power. */
>			if (pwr > maxchpwr)
>				pwr = maxchpwr;
>
>			idx = gain - (pwr - power) - tdiff - vdiff;
>			if ((ridx / 8) & 1)	/* MIMO */
>				idx += (int32_t)le32toh(uc->atten[grp][c]);
>
>			if (cmd.band == 0)
>				idx += 9;	/* 5GHz */
>			if (ridx == IWN_RIDX_MAX)
>				idx += 5;	/* CCK */
>
>			/* Make sure idx stays in a valid range. */
>			if (idx < 0)
>				idx = 0;
>			else if (idx > IWN4965_MAX_PWR_INDEX)
>				idx = IWN4965_MAX_PWR_INDEX;
>
>			DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_TXPOW,
>			    "%s: Tx chain %d, rate idx %d: power=%d\n",
>			    __func__, c, ridx, idx);
>			cmd.power[ridx].rf_gain[c] = rf_gain[idx];
>			cmd.power[ridx].dsp_gain[c] = dsp_gain[idx];
>		}
>	}
>
>	DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_TXPOW,
>	    "%s: set tx power for chan %d\n", __func__, chan);
>	return iwn_cmd(sc, IWN_CMD_TXPOWER, &cmd, sizeof cmd, async);
>
>#undef interpolate
>#undef fdivround
>}
>
>static int
>iwn5000_set_txpower(struct iwn_softc *sc, struct ieee80211_channel *ch,
>    int async)
>{
>	struct iwn5000_cmd_txpower cmd;
>	int cmdid;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
>
>	/*
>	 * TX power calibration is handled automatically by the firmware
>	 * for 5000 Series.
>	 */
>	memset(&cmd, 0, sizeof cmd);
>	cmd.global_limit = 2 * IWN5000_TXPOWER_MAX_DBM;	/* 16 dBm */
>	cmd.flags = IWN5000_TXPOWER_NO_CLOSED;
>	cmd.srv_limit = IWN5000_TXPOWER_AUTO;
>	DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_XMIT,
>	    "%s: setting TX power; rev=%d\n",
>	    __func__,
>	    IWN_UCODE_API(sc->ucode_rev));
>	if (IWN_UCODE_API(sc->ucode_rev) == 1)
>		cmdid = IWN_CMD_TXPOWER_DBM_V1;
>	else
>		cmdid = IWN_CMD_TXPOWER_DBM;
>	return iwn_cmd(sc, cmdid, &cmd, sizeof cmd, async);
>}
>
>/*
> * Retrieve the maximum RSSI (in dBm) among receivers.
> */
>static int
>iwn4965_get_rssi(struct iwn_softc *sc, struct iwn_rx_stat *stat)
>{
>	struct iwn4965_rx_phystat *phy = (void *)stat->phybuf;
>	uint8_t mask, agc;
>	int rssi;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
>
>	mask = (le16toh(phy->antenna) >> 4) & IWN_ANT_ABC;
>	agc  = (le16toh(phy->agc) >> 7) & 0x7f;
>
>	rssi = 0;
>	if (mask & IWN_ANT_A)
>		rssi = MAX(rssi, phy->rssi[0]);
>	if (mask & IWN_ANT_B)
>		rssi = MAX(rssi, phy->rssi[2]);
>	if (mask & IWN_ANT_C)
>		rssi = MAX(rssi, phy->rssi[4]);
>
>	DPRINTF(sc, IWN_DEBUG_RECV,
>	    "%s: agc %d mask 0x%x rssi %d %d %d result %d\n", __func__, agc,
>	    mask, phy->rssi[0], phy->rssi[2], phy->rssi[4],
>	    rssi - agc - IWN_RSSI_TO_DBM);
>	return rssi - agc - IWN_RSSI_TO_DBM;
>}
>
>static int
>iwn5000_get_rssi(struct iwn_softc *sc, struct iwn_rx_stat *stat)
>{
>	struct iwn5000_rx_phystat *phy = (void *)stat->phybuf;
>	uint8_t agc;
>	int rssi;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
>
>	agc = (le32toh(phy->agc) >> 9) & 0x7f;
>
>	rssi = MAX(le16toh(phy->rssi[0]) & 0xff,
>		   le16toh(phy->rssi[1]) & 0xff);
>	rssi = MAX(le16toh(phy->rssi[2]) & 0xff, rssi);
>
>	DPRINTF(sc, IWN_DEBUG_RECV,
>	    "%s: agc %d rssi %d %d %d result %d\n", __func__, agc,
>	    phy->rssi[0], phy->rssi[1], phy->rssi[2],
>	    rssi - agc - IWN_RSSI_TO_DBM);
>	return rssi - agc - IWN_RSSI_TO_DBM;
>}
>
>/*
> * Retrieve the average noise (in dBm) among receivers.
> */
>static int
>iwn_get_noise(const struct iwn_rx_general_stats *stats)
>{
>	int i, total, nbant, noise;
>
>	total = nbant = 0;
>	for (i = 0; i < 3; i++) {
>		if ((noise = le32toh(stats->noise[i]) & 0xff) == 0)
>			continue;
>		total += noise;
>		nbant++;
>	}
>	/* There should be at least one antenna but check anyway. */
>	return (nbant == 0) ? -127 : (total / nbant) - 107;
>}
>
>/*
> * Compute temperature (in degC) from last received statistics.
> */
>static int
>iwn4965_get_temperature(struct iwn_softc *sc)
>{
>	struct iwn_ucode_info *uc = &sc->ucode_info;
>	int32_t r1, r2, r3, r4, temp;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
>
>	r1 = le32toh(uc->temp[0].chan20MHz);
>	r2 = le32toh(uc->temp[1].chan20MHz);
>	r3 = le32toh(uc->temp[2].chan20MHz);
>	r4 = le32toh(sc->rawtemp);
>
>	if (r1 == r3)	/* Prevents division by 0 (should not happen). */
>		return 0;
>
>	/* Sign-extend 23-bit R4 value to 32-bit. */
>	r4 = ((r4 & 0xffffff) ^ 0x800000) - 0x800000;
>	/* Compute temperature in Kelvin. */
>	temp = (259 * (r4 - r2)) / (r3 - r1);
>	temp = (temp * 97) / 100 + 8;
>
>	DPRINTF(sc, IWN_DEBUG_ANY, "temperature %dK/%dC\n", temp,
>	    IWN_KTOC(temp));
>	return IWN_KTOC(temp);
>}
>
>static int
>iwn5000_get_temperature(struct iwn_softc *sc)
>{
>	int32_t temp;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
>
>	/*
>	 * Temperature is not used by the driver for 5000 Series because
>	 * TX power calibration is handled by firmware.
>	 */
>	temp = le32toh(sc->rawtemp);
>	if (sc->hw_type == IWN_HW_REV_TYPE_5150) {
>		temp = (temp / -5) + sc->temp_off;
>		temp = IWN_KTOC(temp);
>	}
>	return temp;
>}
>
>/*
> * Initialize sensitivity calibration state machine.
> */
>static int
>iwn_init_sensitivity(struct iwn_softc *sc)
>{
>	struct iwn_ops *ops = &sc->ops;
>	struct iwn_calib_state *calib = &sc->calib;
>	uint32_t flags;
>	int error;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
>
>	/* Reset calibration state machine. */
>	memset(calib, 0, sizeof (*calib));
>	calib->state = IWN_CALIB_STATE_INIT;
>	calib->cck_state = IWN_CCK_STATE_HIFA;
>	/* Set initial correlation values. */
>	calib->ofdm_x1     = sc->limits->min_ofdm_x1;
>	calib->ofdm_mrc_x1 = sc->limits->min_ofdm_mrc_x1;
>	calib->ofdm_x4     = sc->limits->min_ofdm_x4;
>	calib->ofdm_mrc_x4 = sc->limits->min_ofdm_mrc_x4;
>	calib->cck_x4      = 125;
>	calib->cck_mrc_x4  = sc->limits->min_cck_mrc_x4;
>	calib->energy_cck  = sc->limits->energy_cck;
>
>	/* Write initial sensitivity. */
>	if ((error = iwn_send_sensitivity(sc)) != 0)
>		return error;
>
>	/* Write initial gains. */
>	if ((error = ops->init_gains(sc)) != 0)
>		return error;
>
>	/* Request statistics at each beacon interval. */
>	flags = 0;
>	DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s: sending request for statistics\n",
>	    __func__);
>	return iwn_cmd(sc, IWN_CMD_GET_STATISTICS, &flags, sizeof flags, 1);
>}
>
>/*
> * Collect noise and RSSI statistics for the first 20 beacons received
> * after association and use them to determine connected antennas and
> * to set differential gains.
> */
>static void
>iwn_collect_noise(struct iwn_softc *sc,
>    const struct iwn_rx_general_stats *stats)
>{
>	struct iwn_ops *ops = &sc->ops;
>	struct iwn_calib_state *calib = &sc->calib;
>	struct ieee80211com *ic = &sc->sc_ic;
>	uint32_t val;
>	int i;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
>
>	/* Accumulate RSSI and noise for all 3 antennas. */
>	for (i = 0; i < 3; i++) {
>		calib->rssi[i] += le32toh(stats->rssi[i]) & 0xff;
>		calib->noise[i] += le32toh(stats->noise[i]) & 0xff;
>	}
>	/* NB: We update differential gains only once after 20 beacons. */
>	if (++calib->nbeacons < 20)
>		return;
>
>	/* Determine highest average RSSI. */
>	val = MAX(calib->rssi[0], calib->rssi[1]);
>	val = MAX(calib->rssi[2], val);
>
>	/* Determine which antennas are connected. */
>	sc->chainmask = sc->rxchainmask;
>	for (i = 0; i < 3; i++)
>		if (val - calib->rssi[i] > 15 * 20)
>			sc->chainmask &= ~(1 << i);
>	DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_XMIT,
>	    "%s: RX chains mask: theoretical=0x%x, actual=0x%x\n",
>	    __func__, sc->rxchainmask, sc->chainmask);
>
>	/* If none of the TX antennas are connected, keep at least one. */
>	if ((sc->chainmask & sc->txchainmask) == 0)
>		sc->chainmask |= IWN_LSB(sc->txchainmask);
>
>	(void)ops->set_gains(sc);
>	calib->state = IWN_CALIB_STATE_RUN;
>
>#ifdef notyet
>	/* XXX Disable RX chains with no antennas connected. */
>	sc->rxon->rxchain = htole16(IWN_RXCHAIN_SEL(sc->chainmask));
>	if (sc->sc_is_scanning)
>		device_printf(sc->sc_dev,
>		    "%s: is_scanning set, before RXON\n",
>		    __func__);
>	(void)iwn_cmd(sc, IWN_CMD_RXON, sc->rxon, sc->rxonsz, 1);
>#endif
>
>	/* Enable power-saving mode if requested by user. */
>	if (ic->ic_flags & IEEE80211_F_PMGTON)
>		(void)iwn_set_pslevel(sc, 0, 3, 1);
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__);
>
>}
>
>static int
>iwn4965_init_gains(struct iwn_softc *sc)
>{
>	struct iwn_phy_calib_gain cmd;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
>
>	memset(&cmd, 0, sizeof cmd);
>	cmd.code = IWN4965_PHY_CALIB_DIFF_GAIN;
>	/* Differential gains initially set to 0 for all 3 antennas. */
>	DPRINTF(sc, IWN_DEBUG_CALIBRATE,
>	    "%s: setting initial differential gains\n", __func__);
>	return iwn_cmd(sc, IWN_CMD_PHY_CALIB, &cmd, sizeof cmd, 1);
>}
>
>static int
>iwn5000_init_gains(struct iwn_softc *sc)
>{
>	struct iwn_phy_calib cmd;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
>
>	memset(&cmd, 0, sizeof cmd);
>	cmd.code = sc->reset_noise_gain;
>	cmd.ngroups = 1;
>	cmd.isvalid = 1;
>	DPRINTF(sc, IWN_DEBUG_CALIBRATE,
>	    "%s: setting initial differential gains\n", __func__);
>	return iwn_cmd(sc, IWN_CMD_PHY_CALIB, &cmd, sizeof cmd, 1);
>}
>
>static int
>iwn4965_set_gains(struct iwn_softc *sc)
>{
>	struct iwn_calib_state *calib = &sc->calib;
>	struct iwn_phy_calib_gain cmd;
>	int i, delta, noise;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
>
>	/* Get minimal noise among connected antennas. */
>	noise = INT_MAX;	/* NB: There's at least one antenna. */
>	for (i = 0; i < 3; i++)
>		if (sc->chainmask & (1 << i))
>			noise = MIN(calib->noise[i], noise);
>
>	memset(&cmd, 0, sizeof cmd);
>	cmd.code = IWN4965_PHY_CALIB_DIFF_GAIN;
>	/* Set differential gains for connected antennas. */
>	for (i = 0; i < 3; i++) {
>		if (sc->chainmask & (1 << i)) {
>			/* Compute attenuation (in unit of 1.5dB). */
>			delta = (noise - (int32_t)calib->noise[i]) / 30;
>			/* NB: delta <= 0 */
>			/* Limit to [-4.5dB,0]. */
>			cmd.gain[i] = MIN(abs(delta), 3);
>			if (delta < 0)
>				cmd.gain[i] |= 1 << 2;	/* sign bit */
>		}
>	}
>	DPRINTF(sc, IWN_DEBUG_CALIBRATE,
>	    "setting differential gains Ant A/B/C: %x/%x/%x (%x)\n",
>	    cmd.gain[0], cmd.gain[1], cmd.gain[2], sc->chainmask);
>	return iwn_cmd(sc, IWN_CMD_PHY_CALIB, &cmd, sizeof cmd, 1);
>}
>
>static int
>iwn5000_set_gains(struct iwn_softc *sc)
>{
>	struct iwn_calib_state *calib = &sc->calib;
>	struct iwn_phy_calib_gain cmd;
>	int i, ant, div, delta;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
>
>	/* We collected 20 beacons and !=6050 need a 1.5 factor. */
>	div = (sc->hw_type == IWN_HW_REV_TYPE_6050) ? 20 : 30;
>
>	memset(&cmd, 0, sizeof cmd);
>	cmd.code = sc->noise_gain;
>	cmd.ngroups = 1;
>	cmd.isvalid = 1;
>	/* Get first available RX antenna as referential. */
>	ant = IWN_LSB(sc->rxchainmask);
>	/* Set differential gains for other antennas. */
>	for (i = ant + 1; i < 3; i++) {
>		if (sc->chainmask & (1 << i)) {
>			/* The delta is relative to antenna "ant". */
>			delta = ((int32_t)calib->noise[ant] -
>			    (int32_t)calib->noise[i]) / div;
>			/* Limit to [-4.5dB,+4.5dB]. */
>			cmd.gain[i - 1] = MIN(abs(delta), 3);
>			if (delta < 0)
>				cmd.gain[i - 1] |= 1 << 2;	/* sign bit */
>		}
>	}
>	DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_XMIT,
>	    "setting differential gains Ant B/C: %x/%x (%x)\n",
>	    cmd.gain[0], cmd.gain[1], sc->chainmask);
>	return iwn_cmd(sc, IWN_CMD_PHY_CALIB, &cmd, sizeof cmd, 1);
>}
>
>/*
> * Tune RF RX sensitivity based on the number of false alarms detected
> * during the last beacon period.
> */
>static void
>iwn_tune_sensitivity(struct iwn_softc *sc, const struct iwn_rx_stats *stats)
>{
>#define inc(val, inc, max)			\
>	if ((val) < (max)) {			\
>		if ((val) < (max) - (inc))	\
>			(val) += (inc);		\
>		else				\
>			(val) = (max);		\
>		needs_update = 1;		\
>	}
>#define dec(val, dec, min)			\
>	if ((val) > (min)) {			\
>		if ((val) > (min) + (dec))	\
>			(val) -= (dec);		\
>		else				\
>			(val) = (min);		\
>		needs_update = 1;		\
>	}
>
>	const struct iwn_sensitivity_limits *limits = sc->limits;
>	struct iwn_calib_state *calib = &sc->calib;
>	uint32_t val, rxena, fa;
>	uint32_t energy[3], energy_min;
>	uint8_t noise[3], noise_ref;
>	int i, needs_update = 0;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
>
>	/* Check that we've been enabled long enough. */
>	if ((rxena = le32toh(stats->general.load)) == 0){
>		DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end not so long\n", __func__);
>		return;
>	}
>
>	/* Compute number of false alarms since last call for OFDM. */
>	fa  = le32toh(stats->ofdm.bad_plcp) - calib->bad_plcp_ofdm;
>	fa += le32toh(stats->ofdm.fa) - calib->fa_ofdm;
>	fa *= 200 * IEEE80211_DUR_TU;	/* 200TU */
>
>	if (fa > 50 * rxena) {
>		/* High false alarm count, decrease sensitivity. */
>		DPRINTF(sc, IWN_DEBUG_CALIBRATE,
>		    "%s: OFDM high false alarm count: %u\n", __func__, fa);
>		inc(calib->ofdm_x1,     1, limits->max_ofdm_x1);
>		inc(calib->ofdm_mrc_x1, 1, limits->max_ofdm_mrc_x1);
>		inc(calib->ofdm_x4,     1, limits->max_ofdm_x4);
>		inc(calib->ofdm_mrc_x4, 1, limits->max_ofdm_mrc_x4);
>
>	} else if (fa < 5 * rxena) {
>		/* Low false alarm count, increase sensitivity. */
>		DPRINTF(sc, IWN_DEBUG_CALIBRATE,
>		    "%s: OFDM low false alarm count: %u\n", __func__, fa);
>		dec(calib->ofdm_x1,     1, limits->min_ofdm_x1);
>		dec(calib->ofdm_mrc_x1, 1, limits->min_ofdm_mrc_x1);
>		dec(calib->ofdm_x4,     1, limits->min_ofdm_x4);
>		dec(calib->ofdm_mrc_x4, 1, limits->min_ofdm_mrc_x4);
>	}
>
>	/* Compute maximum noise among 3 receivers. */
>	for (i = 0; i < 3; i++)
>		noise[i] = (le32toh(stats->general.noise[i]) >> 8) & 0xff;
>	val = MAX(noise[0], noise[1]);
>	val = MAX(noise[2], val);
>	/* Insert it into our samples table. */
>	calib->noise_samples[calib->cur_noise_sample] = val;
>	calib->cur_noise_sample = (calib->cur_noise_sample + 1) % 20;
>
>	/* Compute maximum noise among last 20 samples. */
>	noise_ref = calib->noise_samples[0];
>	for (i = 1; i < 20; i++)
>		noise_ref = MAX(noise_ref, calib->noise_samples[i]);
>
>	/* Compute maximum energy among 3 receivers. */
>	for (i = 0; i < 3; i++)
>		energy[i] = le32toh(stats->general.energy[i]);
>	val = MIN(energy[0], energy[1]);
>	val = MIN(energy[2], val);
>	/* Insert it into our samples table. */
>	calib->energy_samples[calib->cur_energy_sample] = val;
>	calib->cur_energy_sample = (calib->cur_energy_sample + 1) % 10;
>
>	/* Compute minimum energy among last 10 samples. */
>	energy_min = calib->energy_samples[0];
>	for (i = 1; i < 10; i++)
>		energy_min = MAX(energy_min, calib->energy_samples[i]);
>	energy_min += 6;
>
>	/* Compute number of false alarms since last call for CCK. */
>	fa  = le32toh(stats->cck.bad_plcp) - calib->bad_plcp_cck;
>	fa += le32toh(stats->cck.fa) - calib->fa_cck;
>	fa *= 200 * IEEE80211_DUR_TU;	/* 200TU */
>
>	if (fa > 50 * rxena) {
>		/* High false alarm count, decrease sensitivity. */
>		DPRINTF(sc, IWN_DEBUG_CALIBRATE,
>		    "%s: CCK high false alarm count: %u\n", __func__, fa);
>		calib->cck_state = IWN_CCK_STATE_HIFA;
>		calib->low_fa = 0;
>
>		if (calib->cck_x4 > 160) {
>			calib->noise_ref = noise_ref;
>			if (calib->energy_cck > 2)
>				dec(calib->energy_cck, 2, energy_min);
>		}
>		if (calib->cck_x4 < 160) {
>			calib->cck_x4 = 161;
>			needs_update = 1;
>		} else
>			inc(calib->cck_x4, 3, limits->max_cck_x4);
>
>		inc(calib->cck_mrc_x4, 3, limits->max_cck_mrc_x4);
>
>	} else if (fa < 5 * rxena) {
>		/* Low false alarm count, increase sensitivity. */
>		DPRINTF(sc, IWN_DEBUG_CALIBRATE,
>		    "%s: CCK low false alarm count: %u\n", __func__, fa);
>		calib->cck_state = IWN_CCK_STATE_LOFA;
>		calib->low_fa++;
>
>		if (calib->cck_state != IWN_CCK_STATE_INIT &&
>		    (((int32_t)calib->noise_ref - (int32_t)noise_ref) > 2 ||
>		     calib->low_fa > 100)) {
>			inc(calib->energy_cck, 2, limits->min_energy_cck);
>			dec(calib->cck_x4,     3, limits->min_cck_x4);
>			dec(calib->cck_mrc_x4, 3, limits->min_cck_mrc_x4);
>		}
>	} else {
>		/* Not worth to increase or decrease sensitivity. */
>		DPRINTF(sc, IWN_DEBUG_CALIBRATE,
>		    "%s: CCK normal false alarm count: %u\n", __func__, fa);
>		calib->low_fa = 0;
>		calib->noise_ref = noise_ref;
>
>		if (calib->cck_state == IWN_CCK_STATE_HIFA) {
>			/* Previous interval had many false alarms. */
>			dec(calib->energy_cck, 8, energy_min);
>		}
>		calib->cck_state = IWN_CCK_STATE_INIT;
>	}
>
>	if (needs_update)
>		(void)iwn_send_sensitivity(sc);
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__);
>
>#undef dec
>#undef inc
>}
>
>static int
>iwn_send_sensitivity(struct iwn_softc *sc)
>{
>	struct iwn_calib_state *calib = &sc->calib;
>	struct iwn_enhanced_sensitivity_cmd cmd;
>	int len;
>
>	memset(&cmd, 0, sizeof cmd);
>	len = sizeof (struct iwn_sensitivity_cmd);
>	cmd.which = IWN_SENSITIVITY_WORKTBL;
>	/* OFDM modulation. */
>	cmd.corr_ofdm_x1       = htole16(calib->ofdm_x1);
>	cmd.corr_ofdm_mrc_x1   = htole16(calib->ofdm_mrc_x1);
>	cmd.corr_ofdm_x4       = htole16(calib->ofdm_x4);
>	cmd.corr_ofdm_mrc_x4   = htole16(calib->ofdm_mrc_x4);
>	cmd.energy_ofdm        = htole16(sc->limits->energy_ofdm);
>	cmd.energy_ofdm_th     = htole16(62);
>	/* CCK modulation. */
>	cmd.corr_cck_x4        = htole16(calib->cck_x4);
>	cmd.corr_cck_mrc_x4    = htole16(calib->cck_mrc_x4);
>	cmd.energy_cck         = htole16(calib->energy_cck);
>	/* Barker modulation: use default values. */
>	cmd.corr_barker        = htole16(190);
>	cmd.corr_barker_mrc    = htole16(sc->limits->barker_mrc);
>
>	DPRINTF(sc, IWN_DEBUG_CALIBRATE,
>	    "%s: set sensitivity %d/%d/%d/%d/%d/%d/%d\n", __func__,
>	    calib->ofdm_x1, calib->ofdm_mrc_x1, calib->ofdm_x4,
>	    calib->ofdm_mrc_x4, calib->cck_x4,
>	    calib->cck_mrc_x4, calib->energy_cck);
>
>	if (!(sc->sc_flags & IWN_FLAG_ENH_SENS))
>		goto send;
>	/* Enhanced sensitivity settings. */
>	len = sizeof (struct iwn_enhanced_sensitivity_cmd);
>	cmd.ofdm_det_slope_mrc = htole16(668);
>	cmd.ofdm_det_icept_mrc = htole16(4);
>	cmd.ofdm_det_slope     = htole16(486);
>	cmd.ofdm_det_icept     = htole16(37);
>	cmd.cck_det_slope_mrc  = htole16(853);
>	cmd.cck_det_icept_mrc  = htole16(4);
>	cmd.cck_det_slope      = htole16(476);
>	cmd.cck_det_icept      = htole16(99);
>send:
>	return iwn_cmd(sc, IWN_CMD_SET_SENSITIVITY, &cmd, len, 1);
>}
>
>/*
> * Look at the increase of PLCP errors over time; if it exceeds
> * a programmed threshold then trigger an RF retune.
> */
>static void
>iwn_check_rx_recovery(struct iwn_softc *sc, struct iwn_stats *rs)
>{
>	int32_t delta_ofdm, delta_ht, delta_cck;
>	struct iwn_calib_state *calib = &sc->calib;
>	int delta_ticks, cur_ticks;
>	int delta_msec;
>	int thresh;
>
>	/*
>	 * Calculate the difference between the current and
>	 * previous statistics.
>	 */
>	delta_cck = le32toh(rs->rx.cck.bad_plcp) - calib->bad_plcp_cck;
>	delta_ofdm = le32toh(rs->rx.ofdm.bad_plcp) - calib->bad_plcp_ofdm;
>	delta_ht = le32toh(rs->rx.ht.bad_plcp) - calib->bad_plcp_ht;
>
>	/*
>	 * Calculate the delta in time between successive statistics
>	 * messages.  Yes, it can roll over; so we make sure that
>	 * this doesn't happen.
>	 *
>	 * XXX go figure out what to do about rollover
>	 * XXX go figure out what to do if ticks rolls over to -ve instead!
>	 * XXX go stab signed integer overflow undefined-ness in the face.
>	 */
>	cur_ticks = ticks;
>	delta_ticks = cur_ticks - sc->last_calib_ticks;
>
>	/*
>	 * If any are negative, then the firmware likely reset; so just
>	 * bail.  We'll pick this up next time.
>	 */
>	if (delta_cck < 0 || delta_ofdm < 0 || delta_ht < 0 || delta_ticks < 0)
>		return;
>
>	/*
>	 * delta_ticks is in ticks; we need to convert it up to milliseconds
>	 * so we can do some useful math with it.
>	 */
>	delta_msec = ticks_to_msecs(delta_ticks);
>
>	/*
>	 * Calculate what our threshold is given the current delta_msec.
>	 */
>	thresh = sc->base_params->plcp_err_threshold * delta_msec;
>
>	DPRINTF(sc, IWN_DEBUG_STATE,
>	    "%s: time delta: %d; cck=%d, ofdm=%d, ht=%d, total=%d, thresh=%d\n",
>	    __func__,
>	    delta_msec,
>	    delta_cck,
>	    delta_ofdm,
>	    delta_ht,
>	    (delta_msec + delta_cck + delta_ofdm + delta_ht),
>	    thresh);
>
>	/*
>	 * If we need a retune, then schedule a single channel scan
>	 * to a channel that isn't the currently active one!
>	 *
>	 * The math from linux iwlwifi:
>	 *
>	 * if ((delta * 100 / msecs) > threshold)
>	 */
>	if (thresh > 0 && (delta_cck + delta_ofdm + delta_ht) * 100 > thresh) {
>		DPRINTF(sc, IWN_DEBUG_ANY,
>		    "%s: PLCP error threshold raw (%d) comparison (%d) "
>		    "over limit (%d); retune!\n",
>		    __func__,
>		    (delta_cck + delta_ofdm + delta_ht),
>		    (delta_cck + delta_ofdm + delta_ht) * 100,
>		    thresh);
>	}
>}
>
>/*
> * Set STA mode power saving level (between 0 and 5).
> * Level 0 is CAM (Continuously Aware Mode), 5 is for maximum power saving.
> */
>static int
>iwn_set_pslevel(struct iwn_softc *sc, int dtim, int level, int async)
>{
>	struct iwn_pmgt_cmd cmd;
>	const struct iwn_pmgt *pmgt;
>	uint32_t max, skip_dtim;
>	uint32_t reg;
>	int i;
>
>	DPRINTF(sc, IWN_DEBUG_PWRSAVE,
>	    "%s: dtim=%d, level=%d, async=%d\n",
>	    __func__,
>	    dtim,
>	    level,
>	    async);
>
>	/* Select which PS parameters to use. */
>	if (dtim <= 2)
>		pmgt = &iwn_pmgt[0][level];
>	else if (dtim <= 10)
>		pmgt = &iwn_pmgt[1][level];
>	else
>		pmgt = &iwn_pmgt[2][level];
>
>	memset(&cmd, 0, sizeof cmd);
>	if (level != 0)	/* not CAM */
>		cmd.flags |= htole16(IWN_PS_ALLOW_SLEEP);
>	if (level == 5)
>		cmd.flags |= htole16(IWN_PS_FAST_PD);
>	/* Retrieve PCIe Active State Power Management (ASPM). */
>	reg = pci_read_config(sc->sc_dev, sc->sc_cap_off + PCIER_LINK_CTL, 4);
>	if (!(reg & PCIEM_LINK_CTL_ASPMC_L0S))	/* L0s Entry disabled. */
>		cmd.flags |= htole16(IWN_PS_PCI_PMGT);
>	cmd.rxtimeout = htole32(pmgt->rxtimeout * 1024);
>	cmd.txtimeout = htole32(pmgt->txtimeout * 1024);
>
>	if (dtim == 0) {
>		dtim = 1;
>		skip_dtim = 0;
>	} else
>		skip_dtim = pmgt->skip_dtim;
>	if (skip_dtim != 0) {
>		cmd.flags |= htole16(IWN_PS_SLEEP_OVER_DTIM);
>		max = pmgt->intval[4];
>		if (max == (uint32_t)-1)
>			max = dtim * (skip_dtim + 1);
>		else if (max > dtim)
>			max = rounddown(max, dtim);
>	} else
>		max = dtim;
>	for (i = 0; i < 5; i++)
>		cmd.intval[i] = htole32(MIN(max, pmgt->intval[i]));
>
>	DPRINTF(sc, IWN_DEBUG_RESET, "setting power saving level to %d\n",
>	    level);
>	return iwn_cmd(sc, IWN_CMD_SET_POWER_MODE, &cmd, sizeof cmd, async);
>}
>
>static int
>iwn_send_btcoex(struct iwn_softc *sc)
>{
>	struct iwn_bluetooth cmd;
>
>	memset(&cmd, 0, sizeof cmd);
>	cmd.flags = IWN_BT_COEX_CHAN_ANN | IWN_BT_COEX_BT_PRIO;
>	cmd.lead_time = IWN_BT_LEAD_TIME_DEF;
>	cmd.max_kill = IWN_BT_MAX_KILL_DEF;
>	DPRINTF(sc, IWN_DEBUG_RESET, "%s: configuring bluetooth coexistence\n",
>	    __func__);
>	return iwn_cmd(sc, IWN_CMD_BT_COEX, &cmd, sizeof(cmd), 0);
>}
>
>static int
>iwn_send_advanced_btcoex(struct iwn_softc *sc)
>{
>	static const uint32_t btcoex_3wire[12] = {
>		0xaaaaaaaa, 0xaaaaaaaa, 0xaeaaaaaa, 0xaaaaaaaa,
>		0xcc00ff28, 0x0000aaaa, 0xcc00aaaa, 0x0000aaaa,
>		0xc0004000, 0x00004000, 0xf0005000, 0xf0005000,
>	};
>	struct iwn6000_btcoex_config btconfig;
>	struct iwn2000_btcoex_config btconfig2k;
>	struct iwn_btcoex_priotable btprio;
>	struct iwn_btcoex_prot btprot;
>	int error, i;
>	uint8_t flags;
>
>	memset(&btconfig, 0, sizeof btconfig);
>	memset(&btconfig2k, 0, sizeof btconfig2k);
>
>	flags = IWN_BT_FLAG_COEX6000_MODE_3W <<
>	    IWN_BT_FLAG_COEX6000_MODE_SHIFT; // Done as is in linux kernel 3.2
>
>	if (sc->base_params->bt_sco_disable)
>		flags &= ~IWN_BT_FLAG_SYNC_2_BT_DISABLE;
>	else
>		flags |= IWN_BT_FLAG_SYNC_2_BT_DISABLE;
>
>	flags |= IWN_BT_FLAG_COEX6000_CHAN_INHIBITION;
>
>	/* Default flags result is 145 as old value */
>
>	/*
>	 * Flags value has to be review. Values must change if we
>	 * which to disable it
>	 */
>	if (sc->base_params->bt_session_2) {
>		btconfig2k.flags = flags;
>		btconfig2k.max_kill = 5;
>		btconfig2k.bt3_t7_timer = 1;
>		btconfig2k.kill_ack = htole32(0xffff0000);
>		btconfig2k.kill_cts = htole32(0xffff0000);
>		btconfig2k.sample_time = 2;
>		btconfig2k.bt3_t2_timer = 0xc;
>
>		for (i = 0; i < 12; i++)
>			btconfig2k.lookup_table[i] = htole32(btcoex_3wire[i]);
>		btconfig2k.valid = htole16(0xff);
>		btconfig2k.prio_boost = htole32(0xf0);
>		DPRINTF(sc, IWN_DEBUG_RESET,
>		    "%s: configuring advanced bluetooth coexistence"
>		    " session 2, flags : 0x%x\n",
>		    __func__,
>		    flags);
>		error = iwn_cmd(sc, IWN_CMD_BT_COEX, &btconfig2k,
>		    sizeof(btconfig2k), 1);
>	} else {
>		btconfig.flags = flags;
>		btconfig.max_kill = 5;
>		btconfig.bt3_t7_timer = 1;
>		btconfig.kill_ack = htole32(0xffff0000);
>		btconfig.kill_cts = htole32(0xffff0000);
>		btconfig.sample_time = 2;
>		btconfig.bt3_t2_timer = 0xc;
>
>		for (i = 0; i < 12; i++)
>			btconfig.lookup_table[i] = htole32(btcoex_3wire[i]);
>		btconfig.valid = htole16(0xff);
>		btconfig.prio_boost = 0xf0;
>		DPRINTF(sc, IWN_DEBUG_RESET,
>		    "%s: configuring advanced bluetooth coexistence,"
>		    " flags : 0x%x\n",
>		    __func__,
>		    flags);
>		error = iwn_cmd(sc, IWN_CMD_BT_COEX, &btconfig,
>		    sizeof(btconfig), 1);
>	}
>
>	if (error != 0)
>		return error;
>
>	memset(&btprio, 0, sizeof btprio);
>	btprio.calib_init1 = 0x6;
>	btprio.calib_init2 = 0x7;
>	btprio.calib_periodic_low1 = 0x2;
>	btprio.calib_periodic_low2 = 0x3;
>	btprio.calib_periodic_high1 = 0x4;
>	btprio.calib_periodic_high2 = 0x5;
>	btprio.dtim = 0x6;
>	btprio.scan52 = 0x8;
>	btprio.scan24 = 0xa;
>	error = iwn_cmd(sc, IWN_CMD_BT_COEX_PRIOTABLE, &btprio, sizeof(btprio),
>	    1);
>	if (error != 0)
>		return error;
>
>	/* Force BT state machine change. */
>	memset(&btprot, 0, sizeof btprot);
>	btprot.open = 1;
>	btprot.type = 1;
>	error = iwn_cmd(sc, IWN_CMD_BT_COEX_PROT, &btprot, sizeof(btprot), 1);
>	if (error != 0)
>		return error;
>	btprot.open = 0;
>	return iwn_cmd(sc, IWN_CMD_BT_COEX_PROT, &btprot, sizeof(btprot), 1);
>}
>
>static int
>iwn5000_runtime_calib(struct iwn_softc *sc)
>{
>	struct iwn5000_calib_config cmd;
>
>	memset(&cmd, 0, sizeof cmd);
>	cmd.ucode.once.enable = 0xffffffff;
>	cmd.ucode.once.start = IWN5000_CALIB_DC;
>	DPRINTF(sc, IWN_DEBUG_CALIBRATE,
>	    "%s: configuring runtime calibration\n", __func__);
>	return iwn_cmd(sc, IWN5000_CMD_CALIB_CONFIG, &cmd, sizeof(cmd), 0);
>}
>
>static uint32_t
>iwn_get_rxon_ht_flags(struct iwn_softc *sc, struct ieee80211_channel *c)
>{
>	struct ieee80211com *ic = &sc->sc_ic;
>	uint32_t htflags = 0;
>
>	if (! IEEE80211_IS_CHAN_HT(c))
>		return (0);
>
>	htflags |= IWN_RXON_HT_PROTMODE(ic->ic_curhtprotmode);
>
>	if (IEEE80211_IS_CHAN_HT40(c)) {
>		switch (ic->ic_curhtprotmode) {
>		case IEEE80211_HTINFO_OPMODE_HT20PR:
>			htflags |= IWN_RXON_HT_MODEPURE40;
>			break;
>		default:
>			htflags |= IWN_RXON_HT_MODEMIXED;
>			break;
>		}
>	}
>	if (IEEE80211_IS_CHAN_HT40D(c))
>		htflags |= IWN_RXON_HT_HT40MINUS;
>
>	return (htflags);
>}
>
>static int
>iwn_config(struct iwn_softc *sc)
>{
>	struct iwn_ops *ops = &sc->ops;
>	struct ieee80211com *ic = &sc->sc_ic;
>	struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
>	const uint8_t *macaddr;
>	uint32_t txmask;
>	uint16_t rxchain;
>	int error;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
>
>	if ((sc->base_params->calib_need & IWN_FLG_NEED_PHY_CALIB_TEMP_OFFSET)
>	    && (sc->base_params->calib_need & IWN_FLG_NEED_PHY_CALIB_TEMP_OFFSETv2)) {
>		device_printf(sc->sc_dev,"%s: temp_offset and temp_offsetv2 are"
>		    " exclusive each together. Review NIC config file. Conf"
>		    " :  0x%08x Flags :  0x%08x  \n", __func__,
>		    sc->base_params->calib_need,
>		    (IWN_FLG_NEED_PHY_CALIB_TEMP_OFFSET |
>		    IWN_FLG_NEED_PHY_CALIB_TEMP_OFFSETv2));
>		return (EINVAL);
>	}
>
>	/* Compute temperature calib if needed. Will be send by send calib */
>	if (sc->base_params->calib_need & IWN_FLG_NEED_PHY_CALIB_TEMP_OFFSET) {
>		error = iwn5000_temp_offset_calib(sc);
>		if (error != 0) {
>			device_printf(sc->sc_dev,
>			    "%s: could not set temperature offset\n", __func__);
>			return (error);
>		}
>	} else if (sc->base_params->calib_need & IWN_FLG_NEED_PHY_CALIB_TEMP_OFFSETv2) {
>		error = iwn5000_temp_offset_calibv2(sc);
>		if (error != 0) {
>			device_printf(sc->sc_dev,
>			    "%s: could not compute temperature offset v2\n",
>			    __func__);
>			return (error);
>		}
>	}
>
>	if (sc->hw_type == IWN_HW_REV_TYPE_6050) {
>		/* Configure runtime DC calibration. */
>		error = iwn5000_runtime_calib(sc);
>		if (error != 0) {
>			device_printf(sc->sc_dev,
>			    "%s: could not configure runtime calibration\n",
>			    __func__);
>			return error;
>		}
>	}
>
>	/* Configure valid TX chains for >=5000 Series. */
>	if (sc->hw_type != IWN_HW_REV_TYPE_4965 &&
>	    IWN_UCODE_API(sc->ucode_rev) > 1) {
>		txmask = htole32(sc->txchainmask);
>		DPRINTF(sc, IWN_DEBUG_RESET | IWN_DEBUG_XMIT,
>		    "%s: configuring valid TX chains 0x%x\n", __func__, txmask);
>		error = iwn_cmd(sc, IWN5000_CMD_TX_ANT_CONFIG, &txmask,
>		    sizeof txmask, 0);
>		if (error != 0) {
>			device_printf(sc->sc_dev,
>			    "%s: could not configure valid TX chains, "
>			    "error %d\n", __func__, error);
>			return error;
>		}
>	}
>
>	/* Configure bluetooth coexistence. */
>	error = 0;
>
>	/* Configure bluetooth coexistence if needed. */
>	if (sc->base_params->bt_mode == IWN_BT_ADVANCED)
>		error = iwn_send_advanced_btcoex(sc);
>	if (sc->base_params->bt_mode == IWN_BT_SIMPLE)
>		error = iwn_send_btcoex(sc);
>
>	if (error != 0) {
>		device_printf(sc->sc_dev,
>		    "%s: could not configure bluetooth coexistence, error %d\n",
>		    __func__, error);
>		return error;
>	}
>
>	/* Set mode, channel, RX filter and enable RX. */
>	sc->rxon = &sc->rx_on[IWN_RXON_BSS_CTX];
>	memset(sc->rxon, 0, sizeof (struct iwn_rxon));
>	macaddr = vap ? vap->iv_myaddr : ic->ic_macaddr;
>	IEEE80211_ADDR_COPY(sc->rxon->myaddr, macaddr);
>	IEEE80211_ADDR_COPY(sc->rxon->wlap, macaddr);
>	sc->rxon->chan = ieee80211_chan2ieee(ic, ic->ic_curchan);
>	sc->rxon->flags = htole32(IWN_RXON_TSF | IWN_RXON_CTS_TO_SELF);
>	if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan))
>		sc->rxon->flags |= htole32(IWN_RXON_AUTO | IWN_RXON_24GHZ);
>	switch (ic->ic_opmode) {
>	case IEEE80211_M_STA:
>		sc->rxon->mode = IWN_MODE_STA;
>		sc->rxon->filter = htole32(IWN_FILTER_MULTICAST);
>		break;
>	case IEEE80211_M_MONITOR:
>		sc->rxon->mode = IWN_MODE_MONITOR;
>		sc->rxon->filter = htole32(IWN_FILTER_MULTICAST |
>		    IWN_FILTER_CTL | IWN_FILTER_PROMISC);
>		break;
>	default:
>		/* Should not get there. */
>		break;
>	}
>	sc->rxon->cck_mask  = 0x0f;	/* not yet negotiated */
>	sc->rxon->ofdm_mask = 0xff;	/* not yet negotiated */
>	sc->rxon->ht_single_mask = 0xff;
>	sc->rxon->ht_dual_mask = 0xff;
>	sc->rxon->ht_triple_mask = 0xff;
>	/*
>	 * In active association mode, ensure that
>	 * all the receive chains are enabled.
>	 *
>	 * Since we're not yet doing SMPS, don't allow the
>	 * number of idle RX chains to be less than the active
>	 * number.
>	 */
>	rxchain =
>	    IWN_RXCHAIN_VALID(sc->rxchainmask) |
>	    IWN_RXCHAIN_MIMO_COUNT(sc->nrxchains) |
>	    IWN_RXCHAIN_IDLE_COUNT(sc->nrxchains);
>	sc->rxon->rxchain = htole16(rxchain);
>	DPRINTF(sc, IWN_DEBUG_RESET | IWN_DEBUG_XMIT,
>	    "%s: rxchainmask=0x%x, nrxchains=%d\n",
>	    __func__,
>	    sc->rxchainmask,
>	    sc->nrxchains);
>
>	sc->rxon->flags |= htole32(iwn_get_rxon_ht_flags(sc, ic->ic_curchan));
>
>	DPRINTF(sc, IWN_DEBUG_RESET,
>	    "%s: setting configuration; flags=0x%08x\n",
>	    __func__, le32toh(sc->rxon->flags));
>	if (sc->sc_is_scanning)
>		device_printf(sc->sc_dev,
>		    "%s: is_scanning set, before RXON\n",
>		    __func__);
>	error = iwn_cmd(sc, IWN_CMD_RXON, sc->rxon, sc->rxonsz, 0);
>	if (error != 0) {
>		device_printf(sc->sc_dev, "%s: RXON command failed\n",
>		    __func__);
>		return error;
>	}
>
>	if ((error = iwn_add_broadcast_node(sc, 0)) != 0) {
>		device_printf(sc->sc_dev, "%s: could not add broadcast node\n",
>		    __func__);
>		return error;
>	}
>
>	/* Configuration has changed, set TX power accordingly. */
>	if ((error = ops->set_txpower(sc, ic->ic_curchan, 0)) != 0) {
>		device_printf(sc->sc_dev, "%s: could not set TX power\n",
>		    __func__);
>		return error;
>	}
>
>	if ((error = iwn_set_critical_temp(sc)) != 0) {
>		device_printf(sc->sc_dev,
>		    "%s: could not set critical temperature\n", __func__);
>		return error;
>	}
>
>	/* Set power saving level to CAM during initialization. */
>	if ((error = iwn_set_pslevel(sc, 0, 0, 0)) != 0) {
>		device_printf(sc->sc_dev,
>		    "%s: could not set power saving level\n", __func__);
>		return error;
>	}
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__);
>
>	return 0;
>}
>
>static uint16_t
>iwn_get_active_dwell_time(struct iwn_softc *sc,
>    struct ieee80211_channel *c, uint8_t n_probes)
>{
>	/* No channel? Default to 2GHz settings */
>	if (c == NULL || IEEE80211_IS_CHAN_2GHZ(c)) {
>		return (IWN_ACTIVE_DWELL_TIME_2GHZ +
>		IWN_ACTIVE_DWELL_FACTOR_2GHZ * (n_probes + 1));
>	}
>
>	/* 5GHz dwell time */
>	return (IWN_ACTIVE_DWELL_TIME_5GHZ +
>	    IWN_ACTIVE_DWELL_FACTOR_5GHZ * (n_probes + 1));
>}
>
>/*
> * Limit the total dwell time to 85% of the beacon interval.
> *
> * Returns the dwell time in milliseconds.
> */
>static uint16_t
>iwn_limit_dwell(struct iwn_softc *sc, uint16_t dwell_time)
>{
>	struct ieee80211com *ic = &sc->sc_ic;
>	struct ieee80211vap *vap = NULL;
>	int bintval = 0;
>
>	/* bintval is in TU (1.024mS) */
>	if (! TAILQ_EMPTY(&ic->ic_vaps)) {
>		vap = TAILQ_FIRST(&ic->ic_vaps);
>		bintval = vap->iv_bss->ni_intval;
>	}
>
>	/*
>	 * If it's non-zero, we should calculate the minimum of
>	 * it and the DWELL_BASE.
>	 *
>	 * XXX Yes, the math should take into account that bintval
>	 * is 1.024mS, not 1mS..
>	 */
>	if (bintval > 0) {
>		DPRINTF(sc, IWN_DEBUG_SCAN,
>		    "%s: bintval=%d\n",
>		    __func__,
>		    bintval);
>		return (MIN(IWN_PASSIVE_DWELL_BASE, ((bintval * 85) / 100)));
>	}
>
>	/* No association context? Default */
>	return (IWN_PASSIVE_DWELL_BASE);
>}
>
>static uint16_t
>iwn_get_passive_dwell_time(struct iwn_softc *sc, struct ieee80211_channel *c)
>{
>	uint16_t passive;
>
>	if (c == NULL || IEEE80211_IS_CHAN_2GHZ(c)) {
>		passive = IWN_PASSIVE_DWELL_BASE + IWN_PASSIVE_DWELL_TIME_2GHZ;
>	} else {
>		passive = IWN_PASSIVE_DWELL_BASE + IWN_PASSIVE_DWELL_TIME_5GHZ;
>	}
>
>	/* Clamp to the beacon interval if we're associated */
>	return (iwn_limit_dwell(sc, passive));
>}
>
>static int
>iwn_scan(struct iwn_softc *sc, struct ieee80211vap *vap,
>    struct ieee80211_scan_state *ss, struct ieee80211_channel *c)
>{
>	struct ieee80211com *ic = &sc->sc_ic;
>	struct ieee80211_node *ni = vap->iv_bss;
>	struct iwn_scan_hdr *hdr;
>	struct iwn_cmd_data *tx;
>	struct iwn_scan_essid *essid;
>	struct iwn_scan_chan *chan;
>	struct ieee80211_frame *wh;
>	struct ieee80211_rateset *rs;
>	uint8_t *buf, *frm;
>	uint16_t rxchain;
>	uint8_t txant;
>	int buflen, error;
>	int is_active;
>	uint16_t dwell_active, dwell_passive;
>	uint32_t extra, scan_service_time;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
>
>	/*
>	 * We are absolutely not allowed to send a scan command when another
>	 * scan command is pending.
>	 */
>	if (sc->sc_is_scanning) {
>		device_printf(sc->sc_dev, "%s: called whilst scanning!\n",
>		    __func__);
>		return (EAGAIN);
>	}
>
>	/* Assign the scan channel */
>	c = ic->ic_curchan;
>
>	sc->rxon = &sc->rx_on[IWN_RXON_BSS_CTX];
>	buf = malloc(IWN_SCAN_MAXSZ, M_DEVBUF, M_NOWAIT | M_ZERO);
>	if (buf == NULL) {
>		device_printf(sc->sc_dev,
>		    "%s: could not allocate buffer for scan command\n",
>		    __func__);
>		return ENOMEM;
>	}
>	hdr = (struct iwn_scan_hdr *)buf;
>	/*
>	 * Move to the next channel if no frames are received within 10ms
>	 * after sending the probe request.
>	 */
>	hdr->quiet_time = htole16(10);		/* timeout in milliseconds */
>	hdr->quiet_threshold = htole16(1);	/* min # of packets */
>	/*
>	 * Max needs to be greater than active and passive and quiet!
>	 * It's also in microseconds!
>	 */
>	hdr->max_svc = htole32(250 * 1024);
>
>	/*
>	 * Reset scan: interval=100
>	 * Normal scan: interval=becaon interval
>	 * suspend_time: 100 (TU)
>	 *
>	 */
>	extra = (100 /* suspend_time */ / 100 /* beacon interval */) << 22;
>	//scan_service_time = extra | ((100 /* susp */ % 100 /* int */) * 1024);
>	scan_service_time = (4 << 22) | (100 * 1024);	/* Hardcode for now! */
>	hdr->pause_svc = htole32(scan_service_time);
>
>	/* Select antennas for scanning. */
>	rxchain =
>	    IWN_RXCHAIN_VALID(sc->rxchainmask) |
>	    IWN_RXCHAIN_FORCE_MIMO_SEL(sc->rxchainmask) |
>	    IWN_RXCHAIN_DRIVER_FORCE;
>	if (IEEE80211_IS_CHAN_A(c) &&
>	    sc->hw_type == IWN_HW_REV_TYPE_4965) {
>		/* Ant A must be avoided in 5GHz because of an HW bug. */
>		rxchain |= IWN_RXCHAIN_FORCE_SEL(IWN_ANT_B);
>	} else	/* Use all available RX antennas. */
>		rxchain |= IWN_RXCHAIN_FORCE_SEL(sc->rxchainmask);
>	hdr->rxchain = htole16(rxchain);
>	hdr->filter = htole32(IWN_FILTER_MULTICAST | IWN_FILTER_BEACON);
>
>	tx = (struct iwn_cmd_data *)(hdr + 1);
>	tx->flags = htole32(IWN_TX_AUTO_SEQ);
>	tx->id = sc->broadcast_id;
>	tx->lifetime = htole32(IWN_LIFETIME_INFINITE);
>
>	if (IEEE80211_IS_CHAN_5GHZ(c)) {
>		/* Send probe requests at 6Mbps. */
>		tx->rate = htole32(0xd);
>		rs = &ic->ic_sup_rates[IEEE80211_MODE_11A];
>	} else {
>		hdr->flags = htole32(IWN_RXON_24GHZ | IWN_RXON_AUTO);
>		if (sc->hw_type == IWN_HW_REV_TYPE_4965 &&
>		    sc->rxon->associd && sc->rxon->chan > 14)
>			tx->rate = htole32(0xd);
>		else {
>			/* Send probe requests at 1Mbps. */
>			tx->rate = htole32(10 | IWN_RFLAG_CCK);
>		}
>		rs = &ic->ic_sup_rates[IEEE80211_MODE_11G];
>	}
>	/* Use the first valid TX antenna. */
>	txant = IWN_LSB(sc->txchainmask);
>	tx->rate |= htole32(IWN_RFLAG_ANT(txant));
>
>	/*
>	 * Only do active scanning if we're announcing a probe request
>	 * for a given SSID (or more, if we ever add it to the driver.)
>	 */
>	is_active = 0;
>
>	/*
>	 * If we're scanning for a specific SSID, add it to the command.
>	 *
>	 * XXX maybe look at adding support for scanning multiple SSIDs?
>	 */
>	essid = (struct iwn_scan_essid *)(tx + 1);
>	if (ss != NULL) {
>		if (ss->ss_ssid[0].len != 0) {
>			essid[0].id = IEEE80211_ELEMID_SSID;
>			essid[0].len = ss->ss_ssid[0].len;
>			memcpy(essid[0].data, ss->ss_ssid[0].ssid, ss->ss_ssid[0].len);
>		}
>
>		DPRINTF(sc, IWN_DEBUG_SCAN, "%s: ssid_len=%d, ssid=%*s\n",
>		    __func__,
>		    ss->ss_ssid[0].len,
>		    ss->ss_ssid[0].len,
>		    ss->ss_ssid[0].ssid);
>
>		if (ss->ss_nssid > 0)
>			is_active = 1;
>	}
>
>	/*
>	 * Build a probe request frame.  Most of the following code is a
>	 * copy & paste of what is done in net80211.
>	 */
>	wh = (struct ieee80211_frame *)(essid + 20);
>	wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT |
>	    IEEE80211_FC0_SUBTYPE_PROBE_REQ;
>	wh->i_fc[1] = IEEE80211_FC1_DIR_NODS;
>	IEEE80211_ADDR_COPY(wh->i_addr1, vap->iv_ifp->if_broadcastaddr);
>	IEEE80211_ADDR_COPY(wh->i_addr2, IF_LLADDR(vap->iv_ifp));
>	IEEE80211_ADDR_COPY(wh->i_addr3, vap->iv_ifp->if_broadcastaddr);
>	*(uint16_t *)&wh->i_dur[0] = 0;	/* filled by HW */
>	*(uint16_t *)&wh->i_seq[0] = 0;	/* filled by HW */
>
>	frm = (uint8_t *)(wh + 1);
>	frm = ieee80211_add_ssid(frm, NULL, 0);
>	frm = ieee80211_add_rates(frm, rs);
>	if (rs->rs_nrates > IEEE80211_RATE_SIZE)
>		frm = ieee80211_add_xrates(frm, rs);
>	if (ic->ic_htcaps & IEEE80211_HTC_HT)
>		frm = ieee80211_add_htcap(frm, ni);
>
>	/* Set length of probe request. */
>	tx->len = htole16(frm - (uint8_t *)wh);
>
>	/*
>	 * If active scanning is requested but a certain channel is
>	 * marked passive, we can do active scanning if we detect
>	 * transmissions.
>	 *
>	 * There is an issue with some firmware versions that triggers
>	 * a sysassert on a "good CRC threshold" of zero (== disabled),
>	 * on a radar channel even though this means that we should NOT
>	 * send probes.
>	 *
>	 * The "good CRC threshold" is the number of frames that we
>	 * need to receive during our dwell time on a channel before
>	 * sending out probes -- setting this to a huge value will
>	 * mean we never reach it, but at the same time work around
>	 * the aforementioned issue. Thus use IWL_GOOD_CRC_TH_NEVER
>	 * here instead of IWL_GOOD_CRC_TH_DISABLED.
>	 *
>	 * This was fixed in later versions along with some other
>	 * scan changes, and the threshold behaves as a flag in those
>	 * versions.
>	 */
>
>	/*
>	 * If we're doing active scanning, set the crc_threshold
>	 * to a suitable value.  This is different to active veruss
>	 * passive scanning depending upon the channel flags; the
>	 * firmware will obey that particular check for us.
>	 */
>	if (sc->tlv_feature_flags & IWN_UCODE_TLV_FLAGS_NEWSCAN)
>		hdr->crc_threshold = is_active ?
>		    IWN_GOOD_CRC_TH_DEFAULT : IWN_GOOD_CRC_TH_DISABLED;
>	else
>		hdr->crc_threshold = is_active ?
>		    IWN_GOOD_CRC_TH_DEFAULT : IWN_GOOD_CRC_TH_NEVER;
>
>	chan = (struct iwn_scan_chan *)frm;
>	chan->chan = htole16(ieee80211_chan2ieee(ic, c));
>	chan->flags = 0;
>	if (ss->ss_nssid > 0)
>		chan->flags |= htole32(IWN_CHAN_NPBREQS(1));
>	chan->dsp_gain = 0x6e;
>
>	/*
>	 * Set the passive/active flag depending upon the channel mode.
>	 * XXX TODO: take the is_active flag into account as well?
>	 */
>	if (c->ic_flags & IEEE80211_CHAN_PASSIVE)
>		chan->flags |= htole32(IWN_CHAN_PASSIVE);
>	else
>		chan->flags |= htole32(IWN_CHAN_ACTIVE);
>
>	/*
>	 * Calculate the active/passive dwell times.
>	 */
>
>	dwell_active = iwn_get_active_dwell_time(sc, c, ss->ss_nssid);
>	dwell_passive = iwn_get_passive_dwell_time(sc, c);
>
>	/* Make sure they're valid */
>	if (dwell_passive <= dwell_active)
>		dwell_passive = dwell_active + 1;
>
>	chan->active = htole16(dwell_active);
>	chan->passive = htole16(dwell_passive);
>
>	if (IEEE80211_IS_CHAN_5GHZ(c))
>		chan->rf_gain = 0x3b;
>	else
>		chan->rf_gain = 0x28;
>
>	DPRINTF(sc, IWN_DEBUG_STATE,
>	    "%s: chan %u flags 0x%x rf_gain 0x%x "
>	    "dsp_gain 0x%x active %d passive %d scan_svc_time %d crc 0x%x "
>	    "isactive=%d numssid=%d\n", __func__,
>	    chan->chan, chan->flags, chan->rf_gain, chan->dsp_gain,
>	    dwell_active, dwell_passive, scan_service_time,
>	    hdr->crc_threshold, is_active, ss->ss_nssid);
>
>	hdr->nchan++;
>	chan++;
>	buflen = (uint8_t *)chan - buf;
>	hdr->len = htole16(buflen);
>
>	if (sc->sc_is_scanning) {
>		device_printf(sc->sc_dev,
>		    "%s: called with is_scanning set!\n",
>		    __func__);
>	}
>	sc->sc_is_scanning = 1;
>
>	DPRINTF(sc, IWN_DEBUG_STATE, "sending scan command nchan=%d\n",
>	    hdr->nchan);
>	error = iwn_cmd(sc, IWN_CMD_SCAN, buf, buflen, 1);
>	free(buf, M_DEVBUF);
>	if (error == 0)
>		callout_reset(&sc->scan_timeout, 5*hz, iwn_scan_timeout, sc);
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__);
>
>	return error;
>}
>
>static int
>iwn_auth(struct iwn_softc *sc, struct ieee80211vap *vap)
>{
>	struct iwn_ops *ops = &sc->ops;
>	struct ieee80211com *ic = &sc->sc_ic;
>	struct ieee80211_node *ni = vap->iv_bss;
>	int error;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
>
>	sc->rxon = &sc->rx_on[IWN_RXON_BSS_CTX];
>	/* Update adapter configuration. */
>	IEEE80211_ADDR_COPY(sc->rxon->bssid, ni->ni_bssid);
>	sc->rxon->chan = ieee80211_chan2ieee(ic, ni->ni_chan);
>	sc->rxon->flags = htole32(IWN_RXON_TSF | IWN_RXON_CTS_TO_SELF);
>	if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan))
>		sc->rxon->flags |= htole32(IWN_RXON_AUTO | IWN_RXON_24GHZ);
>	if (ic->ic_flags & IEEE80211_F_SHSLOT)
>		sc->rxon->flags |= htole32(IWN_RXON_SHSLOT);
>	if (ic->ic_flags & IEEE80211_F_SHPREAMBLE)
>		sc->rxon->flags |= htole32(IWN_RXON_SHPREAMBLE);
>	if (IEEE80211_IS_CHAN_A(ni->ni_chan)) {
>		sc->rxon->cck_mask  = 0;
>		sc->rxon->ofdm_mask = 0x15;
>	} else if (IEEE80211_IS_CHAN_B(ni->ni_chan)) {
>		sc->rxon->cck_mask  = 0x03;
>		sc->rxon->ofdm_mask = 0;
>	} else {
>		/* Assume 802.11b/g. */
>		sc->rxon->cck_mask  = 0x03;
>		sc->rxon->ofdm_mask = 0x15;
>	}
>
>	/* try HT */
>	sc->rxon->flags |= htole32(iwn_get_rxon_ht_flags(sc, ic->ic_curchan));
>
>	DPRINTF(sc, IWN_DEBUG_STATE, "rxon chan %d flags %x cck %x ofdm %x\n",
>	    sc->rxon->chan, sc->rxon->flags, sc->rxon->cck_mask,
>	    sc->rxon->ofdm_mask);
>	if (sc->sc_is_scanning)
>		device_printf(sc->sc_dev,
>		    "%s: is_scanning set, before RXON\n",
>		    __func__);
>	error = iwn_cmd(sc, IWN_CMD_RXON, sc->rxon, sc->rxonsz, 1);
>	if (error != 0) {
>		device_printf(sc->sc_dev, "%s: RXON command failed, error %d\n",
>		    __func__, error);
>		return error;
>	}
>
>	/* Configuration has changed, set TX power accordingly. */
>	if ((error = ops->set_txpower(sc, ni->ni_chan, 1)) != 0) {
>		device_printf(sc->sc_dev,
>		    "%s: could not set TX power, error %d\n", __func__, error);
>		return error;
>	}
>	/*
>	 * Reconfiguring RXON clears the firmware nodes table so we must
>	 * add the broadcast node again.
>	 */
>	if ((error = iwn_add_broadcast_node(sc, 1)) != 0) {
>		device_printf(sc->sc_dev,
>		    "%s: could not add broadcast node, error %d\n", __func__,
>		    error);
>		return error;
>	}
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__);
>
>	return 0;
>}
>
>static int
>iwn_run(struct iwn_softc *sc, struct ieee80211vap *vap)
>{
>	struct iwn_ops *ops = &sc->ops;
>	struct ieee80211com *ic = &sc->sc_ic;
>	struct ieee80211_node *ni = vap->iv_bss;
>	struct iwn_node_info node;
>	int error;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
>
>	sc->rxon = &sc->rx_on[IWN_RXON_BSS_CTX];
>	if (ic->ic_opmode == IEEE80211_M_MONITOR) {
>		/* Link LED blinks while monitoring. */
>		iwn_set_led(sc, IWN_LED_LINK, 5, 5);
>		return 0;
>	}
>	if ((error = iwn_set_timing(sc, ni)) != 0) {
>		device_printf(sc->sc_dev,
>		    "%s: could not set timing, error %d\n", __func__, error);
>		return error;
>	}
>
>	/* Update adapter configuration. */
>	IEEE80211_ADDR_COPY(sc->rxon->bssid, ni->ni_bssid);
>	sc->rxon->associd = htole16(IEEE80211_AID(ni->ni_associd));
>	sc->rxon->chan = ieee80211_chan2ieee(ic, ni->ni_chan);
>	sc->rxon->flags = htole32(IWN_RXON_TSF | IWN_RXON_CTS_TO_SELF);
>	if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan))
>		sc->rxon->flags |= htole32(IWN_RXON_AUTO | IWN_RXON_24GHZ);
>	if (ic->ic_flags & IEEE80211_F_SHSLOT)
>		sc->rxon->flags |= htole32(IWN_RXON_SHSLOT);
>	if (ic->ic_flags & IEEE80211_F_SHPREAMBLE)
>		sc->rxon->flags |= htole32(IWN_RXON_SHPREAMBLE);
>	if (IEEE80211_IS_CHAN_A(ni->ni_chan)) {
>		sc->rxon->cck_mask  = 0;
>		sc->rxon->ofdm_mask = 0x15;
>	} else if (IEEE80211_IS_CHAN_B(ni->ni_chan)) {
>		sc->rxon->cck_mask  = 0x03;
>		sc->rxon->ofdm_mask = 0;
>	} else {
>		/* Assume 802.11b/g. */
>		sc->rxon->cck_mask  = 0x0f;
>		sc->rxon->ofdm_mask = 0x15;
>	}
>	/* try HT */
>	sc->rxon->flags |= htole32(iwn_get_rxon_ht_flags(sc, ni->ni_chan));
>	sc->rxon->filter |= htole32(IWN_FILTER_BSS);
>	DPRINTF(sc, IWN_DEBUG_STATE, "rxon chan %d flags %x, curhtprotmode=%d\n",
>	    sc->rxon->chan, le32toh(sc->rxon->flags), ic->ic_curhtprotmode);
>	if (sc->sc_is_scanning)
>		device_printf(sc->sc_dev,
>		    "%s: is_scanning set, before RXON\n",
>		    __func__);
>	error = iwn_cmd(sc, IWN_CMD_RXON, sc->rxon, sc->rxonsz, 1);
>	if (error != 0) {
>		device_printf(sc->sc_dev,
>		    "%s: could not update configuration, error %d\n", __func__,
>		    error);
>		return error;
>	}
>
>	/* Configuration has changed, set TX power accordingly. */
>	if ((error = ops->set_txpower(sc, ni->ni_chan, 1)) != 0) {
>		device_printf(sc->sc_dev,
>		    "%s: could not set TX power, error %d\n", __func__, error);
>		return error;
>	}
>
>	/* Fake a join to initialize the TX rate. */
>	((struct iwn_node *)ni)->id = IWN_ID_BSS;
>	iwn_newassoc(ni, 1);
>
>	/* Add BSS node. */
>	memset(&node, 0, sizeof node);
>	IEEE80211_ADDR_COPY(node.macaddr, ni->ni_macaddr);
>	node.id = IWN_ID_BSS;
>	if (IEEE80211_IS_CHAN_HT(ni->ni_chan)) {
>		switch (ni->ni_htcap & IEEE80211_HTCAP_SMPS) {
>		case IEEE80211_HTCAP_SMPS_ENA:
>			node.htflags |= htole32(IWN_SMPS_MIMO_DIS);
>			break;
>		case IEEE80211_HTCAP_SMPS_DYNAMIC:
>			node.htflags |= htole32(IWN_SMPS_MIMO_PROT);
>			break;
>		}
>		node.htflags |= htole32(IWN_AMDPU_SIZE_FACTOR(3) |
>		    IWN_AMDPU_DENSITY(5));	/* 4us */
>		if (IEEE80211_IS_CHAN_HT40(ni->ni_chan))
>			node.htflags |= htole32(IWN_NODE_HT40);
>	}
>	DPRINTF(sc, IWN_DEBUG_STATE, "%s: adding BSS node\n", __func__);
>	error = ops->add_node(sc, &node, 1);
>	if (error != 0) {
>		device_printf(sc->sc_dev,
>		    "%s: could not add BSS node, error %d\n", __func__, error);
>		return error;
>	}
>	DPRINTF(sc, IWN_DEBUG_STATE, "%s: setting link quality for node %d\n",
>	    __func__, node.id);
>	if ((error = iwn_set_link_quality(sc, ni)) != 0) {
>		device_printf(sc->sc_dev,
>		    "%s: could not setup link quality for node %d, error %d\n",
>		    __func__, node.id, error);
>		return error;
>	}
>
>	if ((error = iwn_init_sensitivity(sc)) != 0) {
>		device_printf(sc->sc_dev,
>		    "%s: could not set sensitivity, error %d\n", __func__,
>		    error);
>		return error;
>	}
>	/* Start periodic calibration timer. */
>	sc->calib.state = IWN_CALIB_STATE_ASSOC;
>	sc->calib_cnt = 0;
>	callout_reset(&sc->calib_to, msecs_to_ticks(500), iwn_calib_timeout,
>	    sc);
>
>	/* Link LED always on while associated. */
>	iwn_set_led(sc, IWN_LED_LINK, 0, 1);
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__);
>
>	return 0;
>}
>
>/*
> * This function is called by upper layer when an ADDBA request is received
> * from another STA and before the ADDBA response is sent.
> */
>static int
>iwn_ampdu_rx_start(struct ieee80211_node *ni, struct ieee80211_rx_ampdu *rap,
>    int baparamset, int batimeout, int baseqctl)
>{
>#define MS(_v, _f)	(((_v) & _f) >> _f##_S)
>	struct iwn_softc *sc = ni->ni_ic->ic_softc;
>	struct iwn_ops *ops = &sc->ops;
>	struct iwn_node *wn = (void *)ni;
>	struct iwn_node_info node;
>	uint16_t ssn;
>	uint8_t tid;
>	int error;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
>
>	tid = MS(le16toh(baparamset), IEEE80211_BAPS_TID);
>	ssn = MS(le16toh(baseqctl), IEEE80211_BASEQ_START);
>
>	memset(&node, 0, sizeof node);
>	node.id = wn->id;
>	node.control = IWN_NODE_UPDATE;
>	node.flags = IWN_FLAG_SET_ADDBA;
>	node.addba_tid = tid;
>	node.addba_ssn = htole16(ssn);
>	DPRINTF(sc, IWN_DEBUG_RECV, "ADDBA RA=%d TID=%d SSN=%d\n",
>	    wn->id, tid, ssn);
>	error = ops->add_node(sc, &node, 1);
>	if (error != 0)
>		return error;
>	return sc->sc_ampdu_rx_start(ni, rap, baparamset, batimeout, baseqctl);
>#undef MS
>}
>
>/*
> * This function is called by upper layer on teardown of an HT-immediate
> * Block Ack agreement (eg. uppon receipt of a DELBA frame).
> */
>static void
>iwn_ampdu_rx_stop(struct ieee80211_node *ni, struct ieee80211_rx_ampdu *rap)
>{
>	struct ieee80211com *ic = ni->ni_ic;
>	struct iwn_softc *sc = ic->ic_softc;
>	struct iwn_ops *ops = &sc->ops;
>	struct iwn_node *wn = (void *)ni;
>	struct iwn_node_info node;
>	uint8_t tid;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
>
>	/* XXX: tid as an argument */
>	for (tid = 0; tid < WME_NUM_TID; tid++) {
>		if (&ni->ni_rx_ampdu[tid] == rap)
>			break;
>	}
>
>	memset(&node, 0, sizeof node);
>	node.id = wn->id;
>	node.control = IWN_NODE_UPDATE;
>	node.flags = IWN_FLAG_SET_DELBA;
>	node.delba_tid = tid;
>	DPRINTF(sc, IWN_DEBUG_RECV, "DELBA RA=%d TID=%d\n", wn->id, tid);
>	(void)ops->add_node(sc, &node, 1);
>	sc->sc_ampdu_rx_stop(ni, rap);
>}
>
>static int
>iwn_addba_request(struct ieee80211_node *ni, struct ieee80211_tx_ampdu *tap,
>    int dialogtoken, int baparamset, int batimeout)
>{
>	struct iwn_softc *sc = ni->ni_ic->ic_softc;
>	int qid;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
>
>	for (qid = sc->firstaggqueue; qid < sc->ntxqs; qid++) {
>		if (sc->qid2tap[qid] == NULL)
>			break;
>	}
>	if (qid == sc->ntxqs) {
>		DPRINTF(sc, IWN_DEBUG_XMIT, "%s: not free aggregation queue\n",
>		    __func__);
>		return 0;
>	}
>	tap->txa_private = malloc(sizeof(int), M_DEVBUF, M_NOWAIT);
>	if (tap->txa_private == NULL) {
>		device_printf(sc->sc_dev,
>		    "%s: failed to alloc TX aggregation structure\n", __func__);
>		return 0;
>	}
>	sc->qid2tap[qid] = tap;
>	*(int *)tap->txa_private = qid;
>	return sc->sc_addba_request(ni, tap, dialogtoken, baparamset,
>	    batimeout);
>}
>
>static int
>iwn_addba_response(struct ieee80211_node *ni, struct ieee80211_tx_ampdu *tap,
>    int code, int baparamset, int batimeout)
>{
>	struct iwn_softc *sc = ni->ni_ic->ic_softc;
>	int qid = *(int *)tap->txa_private;
>	uint8_t tid = tap->txa_tid;
>	int ret;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
>
>	if (code == IEEE80211_STATUS_SUCCESS) {
>		ni->ni_txseqs[tid] = tap->txa_start & 0xfff;
>		ret = iwn_ampdu_tx_start(ni->ni_ic, ni, tid);
>		if (ret != 1)
>			return ret;
>	} else {
>		sc->qid2tap[qid] = NULL;
>		free(tap->txa_private, M_DEVBUF);
>		tap->txa_private = NULL;
>	}
>	return sc->sc_addba_response(ni, tap, code, baparamset, batimeout);
>}
>
>/*
> * This function is called by upper layer when an ADDBA response is received
> * from another STA.
> */
>static int
>iwn_ampdu_tx_start(struct ieee80211com *ic, struct ieee80211_node *ni,
>    uint8_t tid)
>{
>	struct ieee80211_tx_ampdu *tap = &ni->ni_tx_ampdu[tid];
>	struct iwn_softc *sc = ni->ni_ic->ic_softc;
>	struct iwn_ops *ops = &sc->ops;
>	struct iwn_node *wn = (void *)ni;
>	struct iwn_node_info node;
>	int error, qid;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
>
>	/* Enable TX for the specified RA/TID. */
>	wn->disable_tid &= ~(1 << tid);
>	memset(&node, 0, sizeof node);
>	node.id = wn->id;
>	node.control = IWN_NODE_UPDATE;
>	node.flags = IWN_FLAG_SET_DISABLE_TID;
>	node.disable_tid = htole16(wn->disable_tid);
>	error = ops->add_node(sc, &node, 1);
>	if (error != 0)
>		return 0;
>
>	if ((error = iwn_nic_lock(sc)) != 0)
>		return 0;
>	qid = *(int *)tap->txa_private;
>	DPRINTF(sc, IWN_DEBUG_XMIT, "%s: ra=%d tid=%d ssn=%d qid=%d\n",
>	    __func__, wn->id, tid, tap->txa_start, qid);
>	ops->ampdu_tx_start(sc, ni, qid, tid, tap->txa_start & 0xfff);
>	iwn_nic_unlock(sc);
>
>	iwn_set_link_quality(sc, ni);
>	return 1;
>}
>
>static void
>iwn_ampdu_tx_stop(struct ieee80211_node *ni, struct ieee80211_tx_ampdu *tap)
>{
>	struct iwn_softc *sc = ni->ni_ic->ic_softc;
>	struct iwn_ops *ops = &sc->ops;
>	uint8_t tid = tap->txa_tid;
>	int qid;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
>
>	sc->sc_addba_stop(ni, tap);
>
>	if (tap->txa_private == NULL)
>		return;
>
>	qid = *(int *)tap->txa_private;
>	if (sc->txq[qid].queued != 0)
>		return;
>	if (iwn_nic_lock(sc) != 0)
>		return;
>	ops->ampdu_tx_stop(sc, qid, tid, tap->txa_start & 0xfff);
>	iwn_nic_unlock(sc);
>	sc->qid2tap[qid] = NULL;
>	free(tap->txa_private, M_DEVBUF);
>	tap->txa_private = NULL;
>}
>
>static void
>iwn4965_ampdu_tx_start(struct iwn_softc *sc, struct ieee80211_node *ni,
>    int qid, uint8_t tid, uint16_t ssn)
>{
>	struct iwn_node *wn = (void *)ni;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
>
>	/* Stop TX scheduler while we're changing its configuration. */
>	iwn_prph_write(sc, IWN4965_SCHED_QUEUE_STATUS(qid),
>	    IWN4965_TXQ_STATUS_CHGACT);
>
>	/* Assign RA/TID translation to the queue. */
>	iwn_mem_write_2(sc, sc->sched_base + IWN4965_SCHED_TRANS_TBL(qid),
>	    wn->id << 4 | tid);
>
>	/* Enable chain-building mode for the queue. */
>	iwn_prph_setbits(sc, IWN4965_SCHED_QCHAIN_SEL, 1 << qid);
>
>	/* Set starting sequence number from the ADDBA request. */
>	sc->txq[qid].cur = sc->txq[qid].read = (ssn & 0xff);
>	IWN_WRITE(sc, IWN_HBUS_TARG_WRPTR, qid << 8 | (ssn & 0xff));
>	iwn_prph_write(sc, IWN4965_SCHED_QUEUE_RDPTR(qid), ssn);
>
>	/* Set scheduler window size. */
>	iwn_mem_write(sc, sc->sched_base + IWN4965_SCHED_QUEUE_OFFSET(qid),
>	    IWN_SCHED_WINSZ);
>	/* Set scheduler frame limit. */
>	iwn_mem_write(sc, sc->sched_base + IWN4965_SCHED_QUEUE_OFFSET(qid) + 4,
>	    IWN_SCHED_LIMIT << 16);
>
>	/* Enable interrupts for the queue. */
>	iwn_prph_setbits(sc, IWN4965_SCHED_INTR_MASK, 1 << qid);
>
>	/* Mark the queue as active. */
>	iwn_prph_write(sc, IWN4965_SCHED_QUEUE_STATUS(qid),
>	    IWN4965_TXQ_STATUS_ACTIVE | IWN4965_TXQ_STATUS_AGGR_ENA |
>	    iwn_tid2fifo[tid] << 1);
>}
>
>static void
>iwn4965_ampdu_tx_stop(struct iwn_softc *sc, int qid, uint8_t tid, uint16_t ssn)
>{
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
>
>	/* Stop TX scheduler while we're changing its configuration. */
>	iwn_prph_write(sc, IWN4965_SCHED_QUEUE_STATUS(qid),
>	    IWN4965_TXQ_STATUS_CHGACT);
>
>	/* Set starting sequence number from the ADDBA request. */
>	IWN_WRITE(sc, IWN_HBUS_TARG_WRPTR, qid << 8 | (ssn & 0xff));
>	iwn_prph_write(sc, IWN4965_SCHED_QUEUE_RDPTR(qid), ssn);
>
>	/* Disable interrupts for the queue. */
>	iwn_prph_clrbits(sc, IWN4965_SCHED_INTR_MASK, 1 << qid);
>
>	/* Mark the queue as inactive. */
>	iwn_prph_write(sc, IWN4965_SCHED_QUEUE_STATUS(qid),
>	    IWN4965_TXQ_STATUS_INACTIVE | iwn_tid2fifo[tid] << 1);
>}
>
>static void
>iwn5000_ampdu_tx_start(struct iwn_softc *sc, struct ieee80211_node *ni,
>    int qid, uint8_t tid, uint16_t ssn)
>{
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
>
>	struct iwn_node *wn = (void *)ni;
>
>	/* Stop TX scheduler while we're changing its configuration. */
>	iwn_prph_write(sc, IWN5000_SCHED_QUEUE_STATUS(qid),
>	    IWN5000_TXQ_STATUS_CHGACT);
>
>	/* Assign RA/TID translation to the queue. */
>	iwn_mem_write_2(sc, sc->sched_base + IWN5000_SCHED_TRANS_TBL(qid),
>	    wn->id << 4 | tid);
>
>	/* Enable chain-building mode for the queue. */
>	iwn_prph_setbits(sc, IWN5000_SCHED_QCHAIN_SEL, 1 << qid);
>
>	/* Enable aggregation for the queue. */
>	iwn_prph_setbits(sc, IWN5000_SCHED_AGGR_SEL, 1 << qid);
>
>	/* Set starting sequence number from the ADDBA request. */
>	sc->txq[qid].cur = sc->txq[qid].read = (ssn & 0xff);
>	IWN_WRITE(sc, IWN_HBUS_TARG_WRPTR, qid << 8 | (ssn & 0xff));
>	iwn_prph_write(sc, IWN5000_SCHED_QUEUE_RDPTR(qid), ssn);
>
>	/* Set scheduler window size and frame limit. */
>	iwn_mem_write(sc, sc->sched_base + IWN5000_SCHED_QUEUE_OFFSET(qid) + 4,
>	    IWN_SCHED_LIMIT << 16 | IWN_SCHED_WINSZ);
>
>	/* Enable interrupts for the queue. */
>	iwn_prph_setbits(sc, IWN5000_SCHED_INTR_MASK, 1 << qid);
>
>	/* Mark the queue as active. */
>	iwn_prph_write(sc, IWN5000_SCHED_QUEUE_STATUS(qid),
>	    IWN5000_TXQ_STATUS_ACTIVE | iwn_tid2fifo[tid]);
>}
>
>static void
>iwn5000_ampdu_tx_stop(struct iwn_softc *sc, int qid, uint8_t tid, uint16_t ssn)
>{
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
>
>	/* Stop TX scheduler while we're changing its configuration. */
>	iwn_prph_write(sc, IWN5000_SCHED_QUEUE_STATUS(qid),
>	    IWN5000_TXQ_STATUS_CHGACT);
>
>	/* Disable aggregation for the queue. */
>	iwn_prph_clrbits(sc, IWN5000_SCHED_AGGR_SEL, 1 << qid);
>
>	/* Set starting sequence number from the ADDBA request. */
>	IWN_WRITE(sc, IWN_HBUS_TARG_WRPTR, qid << 8 | (ssn & 0xff));
>	iwn_prph_write(sc, IWN5000_SCHED_QUEUE_RDPTR(qid), ssn);
>
>	/* Disable interrupts for the queue. */
>	iwn_prph_clrbits(sc, IWN5000_SCHED_INTR_MASK, 1 << qid);
>
>	/* Mark the queue as inactive. */
>	iwn_prph_write(sc, IWN5000_SCHED_QUEUE_STATUS(qid),
>	    IWN5000_TXQ_STATUS_INACTIVE | iwn_tid2fifo[tid]);
>}
>
>/*
> * Query calibration tables from the initialization firmware.  We do this
> * only once at first boot.  Called from a process context.
> */
>static int
>iwn5000_query_calibration(struct iwn_softc *sc)
>{
>	struct iwn5000_calib_config cmd;
>	int error;
>
>	memset(&cmd, 0, sizeof cmd);
>	cmd.ucode.once.enable = htole32(0xffffffff);
>	cmd.ucode.once.start  = htole32(0xffffffff);
>	cmd.ucode.once.send   = htole32(0xffffffff);
>	cmd.ucode.flags       = htole32(0xffffffff);
>	DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s: sending calibration query\n",
>	    __func__);
>	error = iwn_cmd(sc, IWN5000_CMD_CALIB_CONFIG, &cmd, sizeof cmd, 0);
>	if (error != 0)
>		return error;
>
>	/* Wait at most two seconds for calibration to complete. */
>	if (!(sc->sc_flags & IWN_FLAG_CALIB_DONE))
>		error = msleep(sc, &sc->sc_mtx, PCATCH, "iwncal", 2 * hz);
>	return error;
>}
>
>/*
> * Send calibration results to the runtime firmware.  These results were
> * obtained on first boot from the initialization firmware.
> */
>static int
>iwn5000_send_calibration(struct iwn_softc *sc)
>{
>	int idx, error;
>
>	for (idx = 0; idx < IWN5000_PHY_CALIB_MAX_RESULT; idx++) {
>		if (!(sc->base_params->calib_need & (1<<idx))) {
>			DPRINTF(sc, IWN_DEBUG_CALIBRATE,
>			    "No need of calib %d\n",
>			    idx);
>			continue; /* no need for this calib */
>		}
>		if (sc->calibcmd[idx].buf == NULL) {
>			DPRINTF(sc, IWN_DEBUG_CALIBRATE,
>			    "Need calib idx : %d but no available data\n",
>			    idx);
>			continue;
>		}
>
>		DPRINTF(sc, IWN_DEBUG_CALIBRATE,
>		    "send calibration result idx=%d len=%d\n", idx,
>		    sc->calibcmd[idx].len);
>		error = iwn_cmd(sc, IWN_CMD_PHY_CALIB, sc->calibcmd[idx].buf,
>		    sc->calibcmd[idx].len, 0);
>		if (error != 0) {
>			device_printf(sc->sc_dev,
>			    "%s: could not send calibration result, error %d\n",
>			    __func__, error);
>			return error;
>		}
>	}
>	return 0;
>}
>
>static int
>iwn5000_send_wimax_coex(struct iwn_softc *sc)
>{
>	struct iwn5000_wimax_coex wimax;
>
>#if 0
>	if (sc->hw_type == IWN_HW_REV_TYPE_6050) {
>		/* Enable WiMAX coexistence for combo adapters. */
>		wimax.flags =
>		    IWN_WIMAX_COEX_ASSOC_WA_UNMASK |
>		    IWN_WIMAX_COEX_UNASSOC_WA_UNMASK |
>		    IWN_WIMAX_COEX_STA_TABLE_VALID |
>		    IWN_WIMAX_COEX_ENABLE;
>		memcpy(wimax.events, iwn6050_wimax_events,
>		    sizeof iwn6050_wimax_events);
>	} else
>#endif
>	{
>		/* Disable WiMAX coexistence. */
>		wimax.flags = 0;
>		memset(wimax.events, 0, sizeof wimax.events);
>	}
>	DPRINTF(sc, IWN_DEBUG_RESET, "%s: Configuring WiMAX coexistence\n",
>	    __func__);
>	return iwn_cmd(sc, IWN5000_CMD_WIMAX_COEX, &wimax, sizeof wimax, 0);
>}
>
>static int
>iwn5000_crystal_calib(struct iwn_softc *sc)
>{
>	struct iwn5000_phy_calib_crystal cmd;
>
>	memset(&cmd, 0, sizeof cmd);
>	cmd.code = IWN5000_PHY_CALIB_CRYSTAL;
>	cmd.ngroups = 1;
>	cmd.isvalid = 1;
>	cmd.cap_pin[0] = le32toh(sc->eeprom_crystal) & 0xff;
>	cmd.cap_pin[1] = (le32toh(sc->eeprom_crystal) >> 16) & 0xff;
>	DPRINTF(sc, IWN_DEBUG_CALIBRATE, "sending crystal calibration %d, %d\n",
>	    cmd.cap_pin[0], cmd.cap_pin[1]);
>	return iwn_cmd(sc, IWN_CMD_PHY_CALIB, &cmd, sizeof cmd, 0);
>}
>
>static int
>iwn5000_temp_offset_calib(struct iwn_softc *sc)
>{
>	struct iwn5000_phy_calib_temp_offset cmd;
>
>	memset(&cmd, 0, sizeof cmd);
>	cmd.code = IWN5000_PHY_CALIB_TEMP_OFFSET;
>	cmd.ngroups = 1;
>	cmd.isvalid = 1;
>	if (sc->eeprom_temp != 0)
>		cmd.offset = htole16(sc->eeprom_temp);
>	else
>		cmd.offset = htole16(IWN_DEFAULT_TEMP_OFFSET);
>	DPRINTF(sc, IWN_DEBUG_CALIBRATE, "setting radio sensor offset to %d\n",
>	    le16toh(cmd.offset));
>	return iwn_cmd(sc, IWN_CMD_PHY_CALIB, &cmd, sizeof cmd, 0);
>}
>
>static int
>iwn5000_temp_offset_calibv2(struct iwn_softc *sc)
>{
>	struct iwn5000_phy_calib_temp_offsetv2 cmd;
>
>	memset(&cmd, 0, sizeof cmd);
>	cmd.code = IWN5000_PHY_CALIB_TEMP_OFFSET;
>	cmd.ngroups = 1;
>	cmd.isvalid = 1;
>	if (sc->eeprom_temp != 0) {
>		cmd.offset_low = htole16(sc->eeprom_temp);
>		cmd.offset_high = htole16(sc->eeprom_temp_high);
>	} else {
>		cmd.offset_low = htole16(IWN_DEFAULT_TEMP_OFFSET);
>		cmd.offset_high = htole16(IWN_DEFAULT_TEMP_OFFSET);
>	}
>	cmd.burnt_voltage_ref = htole16(sc->eeprom_voltage);
>
>	DPRINTF(sc, IWN_DEBUG_CALIBRATE,
>	    "setting radio sensor low offset to %d, high offset to %d, voltage to %d\n",
>	    le16toh(cmd.offset_low),
>	    le16toh(cmd.offset_high),
>	    le16toh(cmd.burnt_voltage_ref));
>
>	return iwn_cmd(sc, IWN_CMD_PHY_CALIB, &cmd, sizeof cmd, 0);
>}
>
>/*
> * This function is called after the runtime firmware notifies us of its
> * readiness (called in a process context).
> */
>static int
>iwn4965_post_alive(struct iwn_softc *sc)
>{
>	int error, qid;
>
>	if ((error = iwn_nic_lock(sc)) != 0)
>		return error;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
>
>	/* Clear TX scheduler state in SRAM. */
>	sc->sched_base = iwn_prph_read(sc, IWN_SCHED_SRAM_ADDR);
>	iwn_mem_set_region_4(sc, sc->sched_base + IWN4965_SCHED_CTX_OFF, 0,
>	    IWN4965_SCHED_CTX_LEN / sizeof (uint32_t));
>
>	/* Set physical address of TX scheduler rings (1KB aligned). */
>	iwn_prph_write(sc, IWN4965_SCHED_DRAM_ADDR, sc->sched_dma.paddr >> 10);
>
>	IWN_SETBITS(sc, IWN_FH_TX_CHICKEN, IWN_FH_TX_CHICKEN_SCHED_RETRY);
>
>	/* Disable chain mode for all our 16 queues. */
>	iwn_prph_write(sc, IWN4965_SCHED_QCHAIN_SEL, 0);
>
>	for (qid = 0; qid < IWN4965_NTXQUEUES; qid++) {
>		iwn_prph_write(sc, IWN4965_SCHED_QUEUE_RDPTR(qid), 0);
>		IWN_WRITE(sc, IWN_HBUS_TARG_WRPTR, qid << 8 | 0);
>
>		/* Set scheduler window size. */
>		iwn_mem_write(sc, sc->sched_base +
>		    IWN4965_SCHED_QUEUE_OFFSET(qid), IWN_SCHED_WINSZ);
>		/* Set scheduler frame limit. */
>		iwn_mem_write(sc, sc->sched_base +
>		    IWN4965_SCHED_QUEUE_OFFSET(qid) + 4,
>		    IWN_SCHED_LIMIT << 16);
>	}
>
>	/* Enable interrupts for all our 16 queues. */
>	iwn_prph_write(sc, IWN4965_SCHED_INTR_MASK, 0xffff);
>	/* Identify TX FIFO rings (0-7). */
>	iwn_prph_write(sc, IWN4965_SCHED_TXFACT, 0xff);
>
>	/* Mark TX rings (4 EDCA + cmd + 2 HCCA) as active. */
>	for (qid = 0; qid < 7; qid++) {
>		static uint8_t qid2fifo[] = { 3, 2, 1, 0, 4, 5, 6 };
>		iwn_prph_write(sc, IWN4965_SCHED_QUEUE_STATUS(qid),
>		    IWN4965_TXQ_STATUS_ACTIVE | qid2fifo[qid] << 1);
>	}
>	iwn_nic_unlock(sc);
>	return 0;
>}
>
>/*
> * This function is called after the initialization or runtime firmware
> * notifies us of its readiness (called in a process context).
> */
>static int
>iwn5000_post_alive(struct iwn_softc *sc)
>{
>	int error, qid;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
>
>	/* Switch to using ICT interrupt mode. */
>	iwn5000_ict_reset(sc);
>
>	if ((error = iwn_nic_lock(sc)) != 0){
>		DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end in error\n", __func__);
>		return error;
>	}
>
>	/* Clear TX scheduler state in SRAM. */
>	sc->sched_base = iwn_prph_read(sc, IWN_SCHED_SRAM_ADDR);
>	iwn_mem_set_region_4(sc, sc->sched_base + IWN5000_SCHED_CTX_OFF, 0,
>	    IWN5000_SCHED_CTX_LEN / sizeof (uint32_t));
>
>	/* Set physical address of TX scheduler rings (1KB aligned). */
>	iwn_prph_write(sc, IWN5000_SCHED_DRAM_ADDR, sc->sched_dma.paddr >> 10);
>
>	IWN_SETBITS(sc, IWN_FH_TX_CHICKEN, IWN_FH_TX_CHICKEN_SCHED_RETRY);
>
>	/* Enable chain mode for all queues, except command queue. */
>	if (sc->sc_flags & IWN_FLAG_PAN_SUPPORT)
>		iwn_prph_write(sc, IWN5000_SCHED_QCHAIN_SEL, 0xfffdf);
>	else
>		iwn_prph_write(sc, IWN5000_SCHED_QCHAIN_SEL, 0xfffef);
>	iwn_prph_write(sc, IWN5000_SCHED_AGGR_SEL, 0);
>
>	for (qid = 0; qid < IWN5000_NTXQUEUES; qid++) {
>		iwn_prph_write(sc, IWN5000_SCHED_QUEUE_RDPTR(qid), 0);
>		IWN_WRITE(sc, IWN_HBUS_TARG_WRPTR, qid << 8 | 0);
>
>		iwn_mem_write(sc, sc->sched_base +
>		    IWN5000_SCHED_QUEUE_OFFSET(qid), 0);
>		/* Set scheduler window size and frame limit. */
>		iwn_mem_write(sc, sc->sched_base +
>		    IWN5000_SCHED_QUEUE_OFFSET(qid) + 4,
>		    IWN_SCHED_LIMIT << 16 | IWN_SCHED_WINSZ);
>	}
>
>	/* Enable interrupts for all our 20 queues. */
>	iwn_prph_write(sc, IWN5000_SCHED_INTR_MASK, 0xfffff);
>	/* Identify TX FIFO rings (0-7). */
>	iwn_prph_write(sc, IWN5000_SCHED_TXFACT, 0xff);
>
>	/* Mark TX rings (4 EDCA + cmd + 2 HCCA) as active. */
>	if (sc->sc_flags & IWN_FLAG_PAN_SUPPORT) {
>		/* Mark TX rings as active. */
>		for (qid = 0; qid < 11; qid++) {
>			static uint8_t qid2fifo[] = { 3, 2, 1, 0, 0, 4, 2, 5, 4, 7, 5 };
>			iwn_prph_write(sc, IWN5000_SCHED_QUEUE_STATUS(qid),
>			    IWN5000_TXQ_STATUS_ACTIVE | qid2fifo[qid]);
>		}
>	} else {
>		/* Mark TX rings (4 EDCA + cmd + 2 HCCA) as active. */
>		for (qid = 0; qid < 7; qid++) {
>			static uint8_t qid2fifo[] = { 3, 2, 1, 0, 7, 5, 6 };
>			iwn_prph_write(sc, IWN5000_SCHED_QUEUE_STATUS(qid),
>			    IWN5000_TXQ_STATUS_ACTIVE | qid2fifo[qid]);
>		}
>	}
>	iwn_nic_unlock(sc);
>
>	/* Configure WiMAX coexistence for combo adapters. */
>	error = iwn5000_send_wimax_coex(sc);
>	if (error != 0) {
>		device_printf(sc->sc_dev,
>		    "%s: could not configure WiMAX coexistence, error %d\n",
>		    __func__, error);
>		return error;
>	}
>	if (sc->hw_type != IWN_HW_REV_TYPE_5150) {
>		/* Perform crystal calibration. */
>		error = iwn5000_crystal_calib(sc);
>		if (error != 0) {
>			device_printf(sc->sc_dev,
>			    "%s: crystal calibration failed, error %d\n",
>			    __func__, error);
>			return error;
>		}
>	}
>	if (!(sc->sc_flags & IWN_FLAG_CALIB_DONE)) {
>		/* Query calibration from the initialization firmware. */
>		if ((error = iwn5000_query_calibration(sc)) != 0) {
>			device_printf(sc->sc_dev,
>			    "%s: could not query calibration, error %d\n",
>			    __func__, error);
>			return error;
>		}
>		/*
>		 * We have the calibration results now, reboot with the
>		 * runtime firmware (call ourselves recursively!)
>		 */
>		iwn_hw_stop(sc);
>		error = iwn_hw_init(sc);
>	} else {
>		/* Send calibration results to runtime firmware. */
>		error = iwn5000_send_calibration(sc);
>	}
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__);
>
>	return error;
>}
>
>/*
> * The firmware boot code is small and is intended to be copied directly into
> * the NIC internal memory (no DMA transfer).
> */
>static int
>iwn4965_load_bootcode(struct iwn_softc *sc, const uint8_t *ucode, int size)
>{
>	int error, ntries;
>
>	size /= sizeof (uint32_t);
>
>	if ((error = iwn_nic_lock(sc)) != 0)
>		return error;
>
>	/* Copy microcode image into NIC memory. */
>	iwn_prph_write_region_4(sc, IWN_BSM_SRAM_BASE,
>	    (const uint32_t *)ucode, size);
>
>	iwn_prph_write(sc, IWN_BSM_WR_MEM_SRC, 0);
>	iwn_prph_write(sc, IWN_BSM_WR_MEM_DST, IWN_FW_TEXT_BASE);
>	iwn_prph_write(sc, IWN_BSM_WR_DWCOUNT, size);
>
>	/* Start boot load now. */
>	iwn_prph_write(sc, IWN_BSM_WR_CTRL, IWN_BSM_WR_CTRL_START);
>
>	/* Wait for transfer to complete. */
>	for (ntries = 0; ntries < 1000; ntries++) {
>		if (!(iwn_prph_read(sc, IWN_BSM_WR_CTRL) &
>		    IWN_BSM_WR_CTRL_START))
>			break;
>		DELAY(10);
>	}
>	if (ntries == 1000) {
>		device_printf(sc->sc_dev, "%s: could not load boot firmware\n",
>		    __func__);
>		iwn_nic_unlock(sc);
>		return ETIMEDOUT;
>	}
>
>	/* Enable boot after power up. */
>	iwn_prph_write(sc, IWN_BSM_WR_CTRL, IWN_BSM_WR_CTRL_START_EN);
>
>	iwn_nic_unlock(sc);
>	return 0;
>}
>
>static int
>iwn4965_load_firmware(struct iwn_softc *sc)
>{
>	struct iwn_fw_info *fw = &sc->fw;
>	struct iwn_dma_info *dma = &sc->fw_dma;
>	int error;
>
>	/* Copy initialization sections into pre-allocated DMA-safe memory. */
>	memcpy(dma->vaddr, fw->init.data, fw->init.datasz);
>	bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE);
>	memcpy(dma->vaddr + IWN4965_FW_DATA_MAXSZ,
>	    fw->init.text, fw->init.textsz);
>	bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE);
>
>	/* Tell adapter where to find initialization sections. */
>	if ((error = iwn_nic_lock(sc)) != 0)
>		return error;
>	iwn_prph_write(sc, IWN_BSM_DRAM_DATA_ADDR, dma->paddr >> 4);
>	iwn_prph_write(sc, IWN_BSM_DRAM_DATA_SIZE, fw->init.datasz);
>	iwn_prph_write(sc, IWN_BSM_DRAM_TEXT_ADDR,
>	    (dma->paddr + IWN4965_FW_DATA_MAXSZ) >> 4);
>	iwn_prph_write(sc, IWN_BSM_DRAM_TEXT_SIZE, fw->init.textsz);
>	iwn_nic_unlock(sc);
>
>	/* Load firmware boot code. */
>	error = iwn4965_load_bootcode(sc, fw->boot.text, fw->boot.textsz);
>	if (error != 0) {
>		device_printf(sc->sc_dev, "%s: could not load boot firmware\n",
>		    __func__);
>		return error;
>	}
>	/* Now press "execute". */
>	IWN_WRITE(sc, IWN_RESET, 0);
>
>	/* Wait at most one second for first alive notification. */
>	if ((error = msleep(sc, &sc->sc_mtx, PCATCH, "iwninit", hz)) != 0) {
>		device_printf(sc->sc_dev,
>		    "%s: timeout waiting for adapter to initialize, error %d\n",
>		    __func__, error);
>		return error;
>	}
>
>	/* Retrieve current temperature for initial TX power calibration. */
>	sc->rawtemp = sc->ucode_info.temp[3].chan20MHz;
>	sc->temp = iwn4965_get_temperature(sc);
>
>	/* Copy runtime sections into pre-allocated DMA-safe memory. */
>	memcpy(dma->vaddr, fw->main.data, fw->main.datasz);
>	bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE);
>	memcpy(dma->vaddr + IWN4965_FW_DATA_MAXSZ,
>	    fw->main.text, fw->main.textsz);
>	bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE);
>
>	/* Tell adapter where to find runtime sections. */
>	if ((error = iwn_nic_lock(sc)) != 0)
>		return error;
>	iwn_prph_write(sc, IWN_BSM_DRAM_DATA_ADDR, dma->paddr >> 4);
>	iwn_prph_write(sc, IWN_BSM_DRAM_DATA_SIZE, fw->main.datasz);
>	iwn_prph_write(sc, IWN_BSM_DRAM_TEXT_ADDR,
>	    (dma->paddr + IWN4965_FW_DATA_MAXSZ) >> 4);
>	iwn_prph_write(sc, IWN_BSM_DRAM_TEXT_SIZE,
>	    IWN_FW_UPDATED | fw->main.textsz);
>	iwn_nic_unlock(sc);
>
>	return 0;
>}
>
>static int
>iwn5000_load_firmware_section(struct iwn_softc *sc, uint32_t dst,
>    const uint8_t *section, int size)
>{
>	struct iwn_dma_info *dma = &sc->fw_dma;
>	int error;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
>
>	/* Copy firmware section into pre-allocated DMA-safe memory. */
>	memcpy(dma->vaddr, section, size);
>	bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE);
>
>	if ((error = iwn_nic_lock(sc)) != 0)
>		return error;
>
>	IWN_WRITE(sc, IWN_FH_TX_CONFIG(IWN_SRVC_DMACHNL),
>	    IWN_FH_TX_CONFIG_DMA_PAUSE);
>
>	IWN_WRITE(sc, IWN_FH_SRAM_ADDR(IWN_SRVC_DMACHNL), dst);
>	IWN_WRITE(sc, IWN_FH_TFBD_CTRL0(IWN_SRVC_DMACHNL),
>	    IWN_LOADDR(dma->paddr));
>	IWN_WRITE(sc, IWN_FH_TFBD_CTRL1(IWN_SRVC_DMACHNL),
>	    IWN_HIADDR(dma->paddr) << 28 | size);
>	IWN_WRITE(sc, IWN_FH_TXBUF_STATUS(IWN_SRVC_DMACHNL),
>	    IWN_FH_TXBUF_STATUS_TBNUM(1) |
>	    IWN_FH_TXBUF_STATUS_TBIDX(1) |
>	    IWN_FH_TXBUF_STATUS_TFBD_VALID);
>
>	/* Kick Flow Handler to start DMA transfer. */
>	IWN_WRITE(sc, IWN_FH_TX_CONFIG(IWN_SRVC_DMACHNL),
>	    IWN_FH_TX_CONFIG_DMA_ENA | IWN_FH_TX_CONFIG_CIRQ_HOST_ENDTFD);
>
>	iwn_nic_unlock(sc);
>
>	/* Wait at most five seconds for FH DMA transfer to complete. */
>	return msleep(sc, &sc->sc_mtx, PCATCH, "iwninit", 5 * hz);
>}
>
>static int
>iwn5000_load_firmware(struct iwn_softc *sc)
>{
>	struct iwn_fw_part *fw;
>	int error;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
>
>	/* Load the initialization firmware on first boot only. */
>	fw = (sc->sc_flags & IWN_FLAG_CALIB_DONE) ?
>	    &sc->fw.main : &sc->fw.init;
>
>	error = iwn5000_load_firmware_section(sc, IWN_FW_TEXT_BASE,
>	    fw->text, fw->textsz);
>	if (error != 0) {
>		device_printf(sc->sc_dev,
>		    "%s: could not load firmware %s section, error %d\n",
>		    __func__, ".text", error);
>		return error;
>	}
>	error = iwn5000_load_firmware_section(sc, IWN_FW_DATA_BASE,
>	    fw->data, fw->datasz);
>	if (error != 0) {
>		device_printf(sc->sc_dev,
>		    "%s: could not load firmware %s section, error %d\n",
>		    __func__, ".data", error);
>		return error;
>	}
>
>	/* Now press "execute". */
>	IWN_WRITE(sc, IWN_RESET, 0);
>	return 0;
>}
>
>/*
> * Extract text and data sections from a legacy firmware image.
> */
>static int
>iwn_read_firmware_leg(struct iwn_softc *sc, struct iwn_fw_info *fw)
>{
>	const uint32_t *ptr;
>	size_t hdrlen = 24;
>	uint32_t rev;
>
>	ptr = (const uint32_t *)fw->data;
>	rev = le32toh(*ptr++);
>
>	sc->ucode_rev = rev;
>
>	/* Check firmware API version. */
>	if (IWN_FW_API(rev) <= 1) {
>		device_printf(sc->sc_dev,
>		    "%s: bad firmware, need API version >=2\n", __func__);
>		return EINVAL;
>	}
>	if (IWN_FW_API(rev) >= 3) {
>		/* Skip build number (version 2 header). */
>		hdrlen += 4;
>		ptr++;
>	}
>	if (fw->size < hdrlen) {
>		device_printf(sc->sc_dev, "%s: firmware too short: %zu bytes\n",
>		    __func__, fw->size);
>		return EINVAL;
>	}
>	fw->main.textsz = le32toh(*ptr++);
>	fw->main.datasz = le32toh(*ptr++);
>	fw->init.textsz = le32toh(*ptr++);
>	fw->init.datasz = le32toh(*ptr++);
>	fw->boot.textsz = le32toh(*ptr++);
>
>	/* Check that all firmware sections fit. */
>	if (fw->size < hdrlen + fw->main.textsz + fw->main.datasz +
>	    fw->init.textsz + fw->init.datasz + fw->boot.textsz) {
>		device_printf(sc->sc_dev, "%s: firmware too short: %zu bytes\n",
>		    __func__, fw->size);
>		return EINVAL;
>	}
>
>	/* Get pointers to firmware sections. */
>	fw->main.text = (const uint8_t *)ptr;
>	fw->main.data = fw->main.text + fw->main.textsz;
>	fw->init.text = fw->main.data + fw->main.datasz;
>	fw->init.data = fw->init.text + fw->init.textsz;
>	fw->boot.text = fw->init.data + fw->init.datasz;
>	return 0;
>}
>
>/*
> * Extract text and data sections from a TLV firmware image.
> */
>static int
>iwn_read_firmware_tlv(struct iwn_softc *sc, struct iwn_fw_info *fw,
>    uint16_t alt)
>{
>	const struct iwn_fw_tlv_hdr *hdr;
>	const struct iwn_fw_tlv *tlv;
>	const uint8_t *ptr, *end;
>	uint64_t altmask;
>	uint32_t len, tmp;
>
>	if (fw->size < sizeof (*hdr)) {
>		device_printf(sc->sc_dev, "%s: firmware too short: %zu bytes\n",
>		    __func__, fw->size);
>		return EINVAL;
>	}
>	hdr = (const struct iwn_fw_tlv_hdr *)fw->data;
>	if (hdr->signature != htole32(IWN_FW_SIGNATURE)) {
>		device_printf(sc->sc_dev, "%s: bad firmware signature 0x%08x\n",
>		    __func__, le32toh(hdr->signature));
>		return EINVAL;
>	}
>	DPRINTF(sc, IWN_DEBUG_RESET, "FW: \"%.64s\", build 0x%x\n", hdr->descr,
>	    le32toh(hdr->build));
>	sc->ucode_rev = le32toh(hdr->rev);
>
>	/*
>	 * Select the closest supported alternative that is less than
>	 * or equal to the specified one.
>	 */
>	altmask = le64toh(hdr->altmask);
>	while (alt > 0 && !(altmask & (1ULL << alt)))
>		alt--;	/* Downgrade. */
>	DPRINTF(sc, IWN_DEBUG_RESET, "using alternative %d\n", alt);
>
>	ptr = (const uint8_t *)(hdr + 1);
>	end = (const uint8_t *)(fw->data + fw->size);
>
>	/* Parse type-length-value fields. */
>	while (ptr + sizeof (*tlv) <= end) {
>		tlv = (const struct iwn_fw_tlv *)ptr;
>		len = le32toh(tlv->len);
>
>		ptr += sizeof (*tlv);
>		if (ptr + len > end) {
>			device_printf(sc->sc_dev,
>			    "%s: firmware too short: %zu bytes\n", __func__,
>			    fw->size);
>			return EINVAL;
>		}
>		/* Skip other alternatives. */
>		if (tlv->alt != 0 && tlv->alt != htole16(alt))
>			goto next;
>
>		switch (le16toh(tlv->type)) {
>		case IWN_FW_TLV_MAIN_TEXT:
>			fw->main.text = ptr;
>			fw->main.textsz = len;
>			break;
>		case IWN_FW_TLV_MAIN_DATA:
>			fw->main.data = ptr;
>			fw->main.datasz = len;
>			break;
>		case IWN_FW_TLV_INIT_TEXT:
>			fw->init.text = ptr;
>			fw->init.textsz = len;
>			break;
>		case IWN_FW_TLV_INIT_DATA:
>			fw->init.data = ptr;
>			fw->init.datasz = len;
>			break;
>		case IWN_FW_TLV_BOOT_TEXT:
>			fw->boot.text = ptr;
>			fw->boot.textsz = len;
>			break;
>		case IWN_FW_TLV_ENH_SENS:
>			if (!len)
>				sc->sc_flags |= IWN_FLAG_ENH_SENS;
>			break;
>		case IWN_FW_TLV_PHY_CALIB:
>			tmp = le32toh(*ptr);
>			if (tmp < 253) {
>				sc->reset_noise_gain = tmp;
>				sc->noise_gain = tmp + 1;
>			}
>			break;
>		case IWN_FW_TLV_PAN:
>			sc->sc_flags |= IWN_FLAG_PAN_SUPPORT;
>			DPRINTF(sc, IWN_DEBUG_RESET,
>			    "PAN Support found: %d\n", 1);
>			break;
>		case IWN_FW_TLV_FLAGS:
>			if (len < sizeof(uint32_t))
>				break;
>			if (len % sizeof(uint32_t))
>				break;
>			sc->tlv_feature_flags = le32toh(*ptr);
>			DPRINTF(sc, IWN_DEBUG_RESET,
>			    "%s: feature: 0x%08x\n",
>			    __func__,
>			    sc->tlv_feature_flags);
>			break;
>		case IWN_FW_TLV_PBREQ_MAXLEN:
>		case IWN_FW_TLV_RUNT_EVTLOG_PTR:
>		case IWN_FW_TLV_RUNT_EVTLOG_SIZE:
>		case IWN_FW_TLV_RUNT_ERRLOG_PTR:
>		case IWN_FW_TLV_INIT_EVTLOG_PTR:
>		case IWN_FW_TLV_INIT_EVTLOG_SIZE:
>		case IWN_FW_TLV_INIT_ERRLOG_PTR:
>		case IWN_FW_TLV_WOWLAN_INST:
>		case IWN_FW_TLV_WOWLAN_DATA:
>			DPRINTF(sc, IWN_DEBUG_RESET,
>			    "TLV type %d recognized but not handled\n",
>			    le16toh(tlv->type));
>			break;
>		default:
>			DPRINTF(sc, IWN_DEBUG_RESET,
>			    "TLV type %d not handled\n", le16toh(tlv->type));
>			break;
>		}
> next:		/* TLV fields are 32-bit aligned. */
>		ptr += (len + 3) & ~3;
>	}
>	return 0;
>}
>
>static int
>iwn_read_firmware(struct iwn_softc *sc)
>{
>	struct iwn_fw_info *fw = &sc->fw;
>	int error;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
>
>	IWN_UNLOCK(sc);
>
>	memset(fw, 0, sizeof (*fw));
>
>	/* Read firmware image from filesystem. */
>	sc->fw_fp = firmware_get(sc->fwname);
>	if (sc->fw_fp == NULL) {
>		device_printf(sc->sc_dev, "%s: could not read firmware %s\n",
>		    __func__, sc->fwname);
>		IWN_LOCK(sc);
>		return EINVAL;
>	}
>	IWN_LOCK(sc);
>
>	fw->size = sc->fw_fp->datasize;
>	fw->data = (const uint8_t *)sc->fw_fp->data;
>	if (fw->size < sizeof (uint32_t)) {
>		device_printf(sc->sc_dev, "%s: firmware too short: %zu bytes\n",
>		    __func__, fw->size);
>		error = EINVAL;
>		goto fail;
>	}
>
>	/* Retrieve text and data sections. */
>	if (*(const uint32_t *)fw->data != 0)	/* Legacy image. */
>		error = iwn_read_firmware_leg(sc, fw);
>	else
>		error = iwn_read_firmware_tlv(sc, fw, 1);
>	if (error != 0) {
>		device_printf(sc->sc_dev,
>		    "%s: could not read firmware sections, error %d\n",
>		    __func__, error);
>		goto fail;
>	}
>
>	device_printf(sc->sc_dev, "%s: ucode rev=0x%08x\n", __func__, sc->ucode_rev);
>
>	/* Make sure text and data sections fit in hardware memory. */
>	if (fw->main.textsz > sc->fw_text_maxsz ||
>	    fw->main.datasz > sc->fw_data_maxsz ||
>	    fw->init.textsz > sc->fw_text_maxsz ||
>	    fw->init.datasz > sc->fw_data_maxsz ||
>	    fw->boot.textsz > IWN_FW_BOOT_TEXT_MAXSZ ||
>	    (fw->boot.textsz & 3) != 0) {
>		device_printf(sc->sc_dev, "%s: firmware sections too large\n",
>		    __func__);
>		error = EINVAL;
>		goto fail;
>	}
>
>	/* We can proceed with loading the firmware. */
>	return 0;
>
>fail:	iwn_unload_firmware(sc);
>	return error;
>}
>
>static void
>iwn_unload_firmware(struct iwn_softc *sc)
>{
>	firmware_put(sc->fw_fp, FIRMWARE_UNLOAD);
>	sc->fw_fp = NULL;
>}
>
>static int
>iwn_clock_wait(struct iwn_softc *sc)
>{
>	int ntries;
>
>	/* Set "initialization complete" bit. */
>	IWN_SETBITS(sc, IWN_GP_CNTRL, IWN_GP_CNTRL_INIT_DONE);
>
>	/* Wait for clock stabilization. */
>	for (ntries = 0; ntries < 2500; ntries++) {
>		if (IWN_READ(sc, IWN_GP_CNTRL) & IWN_GP_CNTRL_MAC_CLOCK_READY)
>			return 0;
>		DELAY(10);
>	}
>	device_printf(sc->sc_dev,
>	    "%s: timeout waiting for clock stabilization\n", __func__);
>	return ETIMEDOUT;
>}
>
>static int
>iwn_apm_init(struct iwn_softc *sc)
>{
>	uint32_t reg;
>	int error;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
>
>	/* Disable L0s exit timer (NMI bug workaround). */
>	IWN_SETBITS(sc, IWN_GIO_CHICKEN, IWN_GIO_CHICKEN_DIS_L0S_TIMER);
>	/* Don't wait for ICH L0s (ICH bug workaround). */
>	IWN_SETBITS(sc, IWN_GIO_CHICKEN, IWN_GIO_CHICKEN_L1A_NO_L0S_RX);
>
>	/* Set FH wait threshold to max (HW bug under stress workaround). */
>	IWN_SETBITS(sc, IWN_DBG_HPET_MEM, 0xffff0000);
>
>	/* Enable HAP INTA to move adapter from L1a to L0s. */
>	IWN_SETBITS(sc, IWN_HW_IF_CONFIG, IWN_HW_IF_CONFIG_HAP_WAKE_L1A);
>
>	/* Retrieve PCIe Active State Power Management (ASPM). */
>	reg = pci_read_config(sc->sc_dev, sc->sc_cap_off + PCIER_LINK_CTL, 4);
>	/* Workaround for HW instability in PCIe L0->L0s->L1 transition. */
>	if (reg & PCIEM_LINK_CTL_ASPMC_L1)	/* L1 Entry enabled. */
>		IWN_SETBITS(sc, IWN_GIO, IWN_GIO_L0S_ENA);
>	else
>		IWN_CLRBITS(sc, IWN_GIO, IWN_GIO_L0S_ENA);
>
>	if (sc->base_params->pll_cfg_val)
>		IWN_SETBITS(sc, IWN_ANA_PLL, sc->base_params->pll_cfg_val);
>
>	/* Wait for clock stabilization before accessing prph. */
>	if ((error = iwn_clock_wait(sc)) != 0)
>		return error;
>
>	if ((error = iwn_nic_lock(sc)) != 0)
>		return error;
>	if (sc->hw_type == IWN_HW_REV_TYPE_4965) {
>		/* Enable DMA and BSM (Bootstrap State Machine). */
>		iwn_prph_write(sc, IWN_APMG_CLK_EN,
>		    IWN_APMG_CLK_CTRL_DMA_CLK_RQT |
>		    IWN_APMG_CLK_CTRL_BSM_CLK_RQT);
>	} else {
>		/* Enable DMA. */
>		iwn_prph_write(sc, IWN_APMG_CLK_EN,
>		    IWN_APMG_CLK_CTRL_DMA_CLK_RQT);
>	}
>	DELAY(20);
>	/* Disable L1-Active. */
>	iwn_prph_setbits(sc, IWN_APMG_PCI_STT, IWN_APMG_PCI_STT_L1A_DIS);
>	iwn_nic_unlock(sc);
>
>	return 0;
>}
>
>static void
>iwn_apm_stop_master(struct iwn_softc *sc)
>{
>	int ntries;
>
>	/* Stop busmaster DMA activity. */
>	IWN_SETBITS(sc, IWN_RESET, IWN_RESET_STOP_MASTER);
>	for (ntries = 0; ntries < 100; ntries++) {
>		if (IWN_READ(sc, IWN_RESET) & IWN_RESET_MASTER_DISABLED)
>			return;
>		DELAY(10);
>	}
>	device_printf(sc->sc_dev, "%s: timeout waiting for master\n", __func__);
>}
>
>static void
>iwn_apm_stop(struct iwn_softc *sc)
>{
>	iwn_apm_stop_master(sc);
>
>	/* Reset the entire device. */
>	IWN_SETBITS(sc, IWN_RESET, IWN_RESET_SW);
>	DELAY(10);
>	/* Clear "initialization complete" bit. */
>	IWN_CLRBITS(sc, IWN_GP_CNTRL, IWN_GP_CNTRL_INIT_DONE);
>}
>
>static int
>iwn4965_nic_config(struct iwn_softc *sc)
>{
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
>
>	if (IWN_RFCFG_TYPE(sc->rfcfg) == 1) {
>		/*
>		 * I don't believe this to be correct but this is what the
>		 * vendor driver is doing. Probably the bits should not be
>		 * shifted in IWN_RFCFG_*.
>		 */
>		IWN_SETBITS(sc, IWN_HW_IF_CONFIG,
>		    IWN_RFCFG_TYPE(sc->rfcfg) |
>		    IWN_RFCFG_STEP(sc->rfcfg) |
>		    IWN_RFCFG_DASH(sc->rfcfg));
>	}
>	IWN_SETBITS(sc, IWN_HW_IF_CONFIG,
>	    IWN_HW_IF_CONFIG_RADIO_SI | IWN_HW_IF_CONFIG_MAC_SI);
>	return 0;
>}
>
>static int
>iwn5000_nic_config(struct iwn_softc *sc)
>{
>	uint32_t tmp;
>	int error;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
>
>	if (IWN_RFCFG_TYPE(sc->rfcfg) < 3) {
>		IWN_SETBITS(sc, IWN_HW_IF_CONFIG,
>		    IWN_RFCFG_TYPE(sc->rfcfg) |
>		    IWN_RFCFG_STEP(sc->rfcfg) |
>		    IWN_RFCFG_DASH(sc->rfcfg));
>	}
>	IWN_SETBITS(sc, IWN_HW_IF_CONFIG,
>	    IWN_HW_IF_CONFIG_RADIO_SI | IWN_HW_IF_CONFIG_MAC_SI);
>
>	if ((error = iwn_nic_lock(sc)) != 0)
>		return error;
>	iwn_prph_setbits(sc, IWN_APMG_PS, IWN_APMG_PS_EARLY_PWROFF_DIS);
>
>	if (sc->hw_type == IWN_HW_REV_TYPE_1000) {
>		/*
>		 * Select first Switching Voltage Regulator (1.32V) to
>		 * solve a stability issue related to noisy DC2DC line
>		 * in the silicon of 1000 Series.
>		 */
>		tmp = iwn_prph_read(sc, IWN_APMG_DIGITAL_SVR);
>		tmp &= ~IWN_APMG_DIGITAL_SVR_VOLTAGE_MASK;
>		tmp |= IWN_APMG_DIGITAL_SVR_VOLTAGE_1_32;
>		iwn_prph_write(sc, IWN_APMG_DIGITAL_SVR, tmp);
>	}
>	iwn_nic_unlock(sc);
>
>	if (sc->sc_flags & IWN_FLAG_INTERNAL_PA) {
>		/* Use internal power amplifier only. */
>		IWN_WRITE(sc, IWN_GP_DRIVER, IWN_GP_DRIVER_RADIO_2X2_IPA);
>	}
>	if (sc->base_params->additional_nic_config && sc->calib_ver >= 6) {
>		/* Indicate that ROM calibration version is >=6. */
>		IWN_SETBITS(sc, IWN_GP_DRIVER, IWN_GP_DRIVER_CALIB_VER6);
>	}
>	if (sc->base_params->additional_gp_drv_bit)
>		IWN_SETBITS(sc, IWN_GP_DRIVER,
>		    sc->base_params->additional_gp_drv_bit);
>	return 0;
>}
>
>/*
> * Take NIC ownership over Intel Active Management Technology (AMT).
> */
>static int
>iwn_hw_prepare(struct iwn_softc *sc)
>{
>	int ntries;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
>
>	/* Check if hardware is ready. */
>	IWN_SETBITS(sc, IWN_HW_IF_CONFIG, IWN_HW_IF_CONFIG_NIC_READY);
>	for (ntries = 0; ntries < 5; ntries++) {
>		if (IWN_READ(sc, IWN_HW_IF_CONFIG) &
>		    IWN_HW_IF_CONFIG_NIC_READY)
>			return 0;
>		DELAY(10);
>	}
>
>	/* Hardware not ready, force into ready state. */
>	IWN_SETBITS(sc, IWN_HW_IF_CONFIG, IWN_HW_IF_CONFIG_PREPARE);
>	for (ntries = 0; ntries < 15000; ntries++) {
>		if (!(IWN_READ(sc, IWN_HW_IF_CONFIG) &
>		    IWN_HW_IF_CONFIG_PREPARE_DONE))
>			break;
>		DELAY(10);
>	}
>	if (ntries == 15000)
>		return ETIMEDOUT;
>
>	/* Hardware should be ready now. */
>	IWN_SETBITS(sc, IWN_HW_IF_CONFIG, IWN_HW_IF_CONFIG_NIC_READY);
>	for (ntries = 0; ntries < 5; ntries++) {
>		if (IWN_READ(sc, IWN_HW_IF_CONFIG) &
>		    IWN_HW_IF_CONFIG_NIC_READY)
>			return 0;
>		DELAY(10);
>	}
>	return ETIMEDOUT;
>}
>
>static int
>iwn_hw_init(struct iwn_softc *sc)
>{
>	struct iwn_ops *ops = &sc->ops;
>	int error, chnl, qid;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
>
>	/* Clear pending interrupts. */
>	IWN_WRITE(sc, IWN_INT, 0xffffffff);
>
>	if ((error = iwn_apm_init(sc)) != 0) {
>		device_printf(sc->sc_dev,
>		    "%s: could not power ON adapter, error %d\n", __func__,
>		    error);
>		return error;
>	}
>
>	/* Select VMAIN power source. */
>	if ((error = iwn_nic_lock(sc)) != 0)
>		return error;
>	iwn_prph_clrbits(sc, IWN_APMG_PS, IWN_APMG_PS_PWR_SRC_MASK);
>	iwn_nic_unlock(sc);
>
>	/* Perform adapter-specific initialization. */
>	if ((error = ops->nic_config(sc)) != 0)
>		return error;
>
>	/* Initialize RX ring. */
>	if ((error = iwn_nic_lock(sc)) != 0)
>		return error;
>	IWN_WRITE(sc, IWN_FH_RX_CONFIG, 0);
>	IWN_WRITE(sc, IWN_FH_RX_WPTR, 0);
>	/* Set physical address of RX ring (256-byte aligned). */
>	IWN_WRITE(sc, IWN_FH_RX_BASE, sc->rxq.desc_dma.paddr >> 8);
>	/* Set physical address of RX status (16-byte aligned). */
>	IWN_WRITE(sc, IWN_FH_STATUS_WPTR, sc->rxq.stat_dma.paddr >> 4);
>	/* Enable RX. */
>	IWN_WRITE(sc, IWN_FH_RX_CONFIG,
>	    IWN_FH_RX_CONFIG_ENA           |
>	    IWN_FH_RX_CONFIG_IGN_RXF_EMPTY |	/* HW bug workaround */
>	    IWN_FH_RX_CONFIG_IRQ_DST_HOST  |
>	    IWN_FH_RX_CONFIG_SINGLE_FRAME  |
>	    IWN_FH_RX_CONFIG_RB_TIMEOUT(0) |
>	    IWN_FH_RX_CONFIG_NRBD(IWN_RX_RING_COUNT_LOG));
>	iwn_nic_unlock(sc);
>	IWN_WRITE(sc, IWN_FH_RX_WPTR, (IWN_RX_RING_COUNT - 1) & ~7);
>
>	if ((error = iwn_nic_lock(sc)) != 0)
>		return error;
>
>	/* Initialize TX scheduler. */
>	iwn_prph_write(sc, sc->sched_txfact_addr, 0);
>
>	/* Set physical address of "keep warm" page (16-byte aligned). */
>	IWN_WRITE(sc, IWN_FH_KW_ADDR, sc->kw_dma.paddr >> 4);
>
>	/* Initialize TX rings. */
>	for (qid = 0; qid < sc->ntxqs; qid++) {
>		struct iwn_tx_ring *txq = &sc->txq[qid];
>
>		/* Set physical address of TX ring (256-byte aligned). */
>		IWN_WRITE(sc, IWN_FH_CBBC_QUEUE(qid),
>		    txq->desc_dma.paddr >> 8);
>	}
>	iwn_nic_unlock(sc);
>
>	/* Enable DMA channels. */
>	for (chnl = 0; chnl < sc->ndmachnls; chnl++) {
>		IWN_WRITE(sc, IWN_FH_TX_CONFIG(chnl),
>		    IWN_FH_TX_CONFIG_DMA_ENA |
>		    IWN_FH_TX_CONFIG_DMA_CREDIT_ENA);
>	}
>
>	/* Clear "radio off" and "commands blocked" bits. */
>	IWN_WRITE(sc, IWN_UCODE_GP1_CLR, IWN_UCODE_GP1_RFKILL);
>	IWN_WRITE(sc, IWN_UCODE_GP1_CLR, IWN_UCODE_GP1_CMD_BLOCKED);
>
>	/* Clear pending interrupts. */
>	IWN_WRITE(sc, IWN_INT, 0xffffffff);
>	/* Enable interrupt coalescing. */
>	IWN_WRITE(sc, IWN_INT_COALESCING, 512 / 8);
>	/* Enable interrupts. */
>	IWN_WRITE(sc, IWN_INT_MASK, sc->int_mask);
>
>	/* _Really_ make sure "radio off" bit is cleared! */
>	IWN_WRITE(sc, IWN_UCODE_GP1_CLR, IWN_UCODE_GP1_RFKILL);
>	IWN_WRITE(sc, IWN_UCODE_GP1_CLR, IWN_UCODE_GP1_RFKILL);
>
>	/* Enable shadow registers. */
>	if (sc->base_params->shadow_reg_enable)
>		IWN_SETBITS(sc, IWN_SHADOW_REG_CTRL, 0x800fffff);
>
>	if ((error = ops->load_firmware(sc)) != 0) {
>		device_printf(sc->sc_dev,
>		    "%s: could not load firmware, error %d\n", __func__,
>		    error);
>		return error;
>	}
>	/* Wait at most one second for firmware alive notification. */
>	if ((error = msleep(sc, &sc->sc_mtx, PCATCH, "iwninit", hz)) != 0) {
>		device_printf(sc->sc_dev,
>		    "%s: timeout waiting for adapter to initialize, error %d\n",
>		    __func__, error);
>		return error;
>	}
>	/* Do post-firmware initialization. */
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__);
>
>	return ops->post_alive(sc);
>}
>
>static void
>iwn_hw_stop(struct iwn_softc *sc)
>{
>	int chnl, qid, ntries;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
>
>	IWN_WRITE(sc, IWN_RESET, IWN_RESET_NEVO);
>
>	/* Disable interrupts. */
>	IWN_WRITE(sc, IWN_INT_MASK, 0);
>	IWN_WRITE(sc, IWN_INT, 0xffffffff);
>	IWN_WRITE(sc, IWN_FH_INT, 0xffffffff);
>	sc->sc_flags &= ~IWN_FLAG_USE_ICT;
>
>	/* Make sure we no longer hold the NIC lock. */
>	iwn_nic_unlock(sc);
>
>	/* Stop TX scheduler. */
>	iwn_prph_write(sc, sc->sched_txfact_addr, 0);
>
>	/* Stop all DMA channels. */
>	if (iwn_nic_lock(sc) == 0) {
>		for (chnl = 0; chnl < sc->ndmachnls; chnl++) {
>			IWN_WRITE(sc, IWN_FH_TX_CONFIG(chnl), 0);
>			for (ntries = 0; ntries < 200; ntries++) {
>				if (IWN_READ(sc, IWN_FH_TX_STATUS) &
>				    IWN_FH_TX_STATUS_IDLE(chnl))
>					break;
>				DELAY(10);
>			}
>		}
>		iwn_nic_unlock(sc);
>	}
>
>	/* Stop RX ring. */
>	iwn_reset_rx_ring(sc, &sc->rxq);
>
>	/* Reset all TX rings. */
>	for (qid = 0; qid < sc->ntxqs; qid++)
>		iwn_reset_tx_ring(sc, &sc->txq[qid]);
>
>	if (iwn_nic_lock(sc) == 0) {
>		iwn_prph_write(sc, IWN_APMG_CLK_DIS,
>		    IWN_APMG_CLK_CTRL_DMA_CLK_RQT);
>		iwn_nic_unlock(sc);
>	}
>	DELAY(5);
>	/* Power OFF adapter. */
>	iwn_apm_stop(sc);
>}
>
>static void
>iwn_radio_on(void *arg0, int pending)
>{
>	struct iwn_softc *sc = arg0;
>	struct ieee80211com *ic = &sc->sc_ic;
>	struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
>
>	if (vap != NULL) {
>		iwn_init(sc);
>		ieee80211_init(vap);
>	}
>}
>
>static void
>iwn_radio_off(void *arg0, int pending)
>{
>	struct iwn_softc *sc = arg0;
>	struct ieee80211com *ic = &sc->sc_ic;
>	struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
>
>	iwn_stop(sc);
>	if (vap != NULL)
>		ieee80211_stop(vap);
>
>	/* Enable interrupts to get RF toggle notification. */
>	IWN_LOCK(sc);
>	IWN_WRITE(sc, IWN_INT, 0xffffffff);
>	IWN_WRITE(sc, IWN_INT_MASK, sc->int_mask);
>	IWN_UNLOCK(sc);
>}
>
>static void
>iwn_panicked(void *arg0, int pending)
>{
>	struct iwn_softc *sc = arg0;
>	struct ieee80211com *ic = &sc->sc_ic;
>	struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
>#if 0
>	int error;
>#endif
>
>	if (vap == NULL) {
>		printf("%s: null vap\n", __func__);
>		return;
>	}
>
>	device_printf(sc->sc_dev, "%s: controller panicked, iv_state = %d; "
>	    "restarting\n", __func__, vap->iv_state);
>
>	/*
>	 * This is not enough work. We need to also reinitialise
>	 * the correct transmit state for aggregation enabled queues,
>	 * which has a very specific requirement of
>	 * ring index = 802.11 seqno % 256.  If we don't do this (which
>	 * we definitely don't!) then the firmware will just panic again.
>	 */
>#if 1
>	ieee80211_restart_all(ic);
>#else
>	IWN_LOCK(sc);
>
>	iwn_stop_locked(sc);
>	iwn_init_locked(sc);
>	if (vap->iv_state >= IEEE80211_S_AUTH &&
>	    (error = iwn_auth(sc, vap)) != 0) {
>		device_printf(sc->sc_dev,
>		    "%s: could not move to auth state\n", __func__);
>	}
>	if (vap->iv_state >= IEEE80211_S_RUN &&
>	    (error = iwn_run(sc, vap)) != 0) {
>		device_printf(sc->sc_dev,
>		    "%s: could not move to run state\n", __func__);
>	}
>
>	IWN_UNLOCK(sc);
>#endif
>}
>
>static void
>iwn_init_locked(struct iwn_softc *sc)
>{
>	int error;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
>
>	IWN_LOCK_ASSERT(sc);
>
>	sc->sc_flags |= IWN_FLAG_RUNNING;
>
>	if ((error = iwn_hw_prepare(sc)) != 0) {
>		device_printf(sc->sc_dev, "%s: hardware not ready, error %d\n",
>		    __func__, error);
>		goto fail;
>	}
>
>	/* Initialize interrupt mask to default value. */
>	sc->int_mask = IWN_INT_MASK_DEF;
>	sc->sc_flags &= ~IWN_FLAG_USE_ICT;
>
>	/* Check that the radio is not disabled by hardware switch. */
>	if (!(IWN_READ(sc, IWN_GP_CNTRL) & IWN_GP_CNTRL_RFKILL)) {
>		device_printf(sc->sc_dev,
>		    "radio is disabled by hardware switch\n");
>		/* Enable interrupts to get RF toggle notifications. */
>		IWN_WRITE(sc, IWN_INT, 0xffffffff);
>		IWN_WRITE(sc, IWN_INT_MASK, sc->int_mask);
>		return;
>	}
>
>	/* Read firmware images from the filesystem. */
>	if ((error = iwn_read_firmware(sc)) != 0) {
>		device_printf(sc->sc_dev,
>		    "%s: could not read firmware, error %d\n", __func__,
>		    error);
>		goto fail;
>	}
>
>	/* Initialize hardware and upload firmware. */
>	error = iwn_hw_init(sc);
>	iwn_unload_firmware(sc);
>	if (error != 0) {
>		device_printf(sc->sc_dev,
>		    "%s: could not initialize hardware, error %d\n", __func__,
>		    error);
>		goto fail;
>	}
>
>	/* Configure adapter now that it is ready. */
>	if ((error = iwn_config(sc)) != 0) {
>		device_printf(sc->sc_dev,
>		    "%s: could not configure device, error %d\n", __func__,
>		    error);
>		goto fail;
>	}
>
>	callout_reset(&sc->watchdog_to, hz, iwn_watchdog, sc);
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__);
>
>	return;
>
>fail:
>	sc->sc_flags &= ~IWN_FLAG_RUNNING;
>	iwn_stop_locked(sc);
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end in error\n",__func__);
>}
>
>static void
>iwn_init(struct iwn_softc *sc)
>{
>
>	IWN_LOCK(sc);
>	iwn_init_locked(sc);
>	IWN_UNLOCK(sc);
>
>	if (sc->sc_flags & IWN_FLAG_RUNNING)
>		ieee80211_start_all(&sc->sc_ic);
>}
>
>static void
>iwn_stop_locked(struct iwn_softc *sc)
>{
>
>	IWN_LOCK_ASSERT(sc);
>
>	sc->sc_is_scanning = 0;
>	sc->sc_tx_timer = 0;
>	callout_stop(&sc->watchdog_to);
>	callout_stop(&sc->calib_to);
>	sc->sc_flags &= ~IWN_FLAG_RUNNING;
>
>	/* Power OFF hardware. */
>	iwn_hw_stop(sc);
>}
>
>static void
>iwn_stop(struct iwn_softc *sc)
>{
>	IWN_LOCK(sc);
>	iwn_stop_locked(sc);
>	IWN_UNLOCK(sc);
>}
>
>/*
> * Callback from net80211 to start a scan.
> */
>static void
>iwn_scan_start(struct ieee80211com *ic)
>{
>	struct iwn_softc *sc = ic->ic_softc;
>
>	IWN_LOCK(sc);
>	/* make the link LED blink while we're scanning */
>	iwn_set_led(sc, IWN_LED_LINK, 20, 2);
>	IWN_UNLOCK(sc);
>}
>
>/*
> * Callback from net80211 to terminate a scan.
> */
>static void
>iwn_scan_end(struct ieee80211com *ic)
>{
>	struct iwn_softc *sc = ic->ic_softc;
>	struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
>
>	IWN_LOCK(sc);
>	if (vap->iv_state == IEEE80211_S_RUN) {
>		/* Set link LED to ON status if we are associated */
>		iwn_set_led(sc, IWN_LED_LINK, 0, 1);
>	}
>	IWN_UNLOCK(sc);
>}
>
>/*
> * Callback from net80211 to force a channel change.
> */
>static void
>iwn_set_channel(struct ieee80211com *ic)
>{
>	const struct ieee80211_channel *c = ic->ic_curchan;
>	struct iwn_softc *sc = ic->ic_softc;
>	int error;
>
>	DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__);
>
>	IWN_LOCK(sc);
>	sc->sc_rxtap.wr_chan_freq = htole16(c->ic_freq);
>	sc->sc_rxtap.wr_chan_flags = htole16(c->ic_flags);
>	sc->sc_txtap.wt_chan_freq = htole16(c->ic_freq);
>	sc->sc_txtap.wt_chan_flags = htole16(c->ic_flags);
>
>	/*
>	 * Only need to set the channel in Monitor mode. AP scanning and auth
>	 * are already taken care of by their respective firmware commands.
>	 */
>	if (ic->ic_opmode == IEEE80211_M_MONITOR) {
>		error = iwn_config(sc);
>		if (error != 0)
>		device_printf(sc->sc_dev,
>		    "%s: error %d settting channel\n", __func__, error);
>	}
>	IWN_UNLOCK(sc);
>}
>
>/*
> * Callback from net80211 to start scanning of the current channel.
> */
>static void
>iwn_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell)
>{
>	struct ieee80211vap *vap = ss->ss_vap;
>	struct ieee80211com *ic = vap->iv_ic;
>	struct iwn_softc *sc = ic->ic_softc;
>	int error;
>
>	IWN_LOCK(sc);
>	error = iwn_scan(sc, vap, ss, ic->ic_curchan);
>	IWN_UNLOCK(sc);
>	if (error != 0)
>		ieee80211_cancel_scan(vap);
>}
>
>/*
> * Callback from net80211 to handle the minimum dwell time being met.
> * The intent is to terminate the scan but we just let the firmware
> * notify us when it's finished as we have no safe way to abort it.
> */
>static void
>iwn_scan_mindwell(struct ieee80211_scan_state *ss)
>{
>	/* NB: don't try to abort scan; wait for firmware to finish */
>}
>#ifdef	IWN_DEBUG
>#define	IWN_DESC(x) case x:	return #x
>
>/*
> * Translate CSR code to string
> */
>static char *iwn_get_csr_string(int csr)
>{
>	switch (csr) {
>		IWN_DESC(IWN_HW_IF_CONFIG);
>		IWN_DESC(IWN_INT_COALESCING);
>		IWN_DESC(IWN_INT);
>		IWN_DESC(IWN_INT_MASK);
>		IWN_DESC(IWN_FH_INT);
>		IWN_DESC(IWN_GPIO_IN);
>		IWN_DESC(IWN_RESET);
>		IWN_DESC(IWN_GP_CNTRL);
>		IWN_DESC(IWN_HW_REV);
>		IWN_DESC(IWN_EEPROM);
>		IWN_DESC(IWN_EEPROM_GP);
>		IWN_DESC(IWN_OTP_GP);
>		IWN_DESC(IWN_GIO);
>		IWN_DESC(IWN_GP_UCODE);
>		IWN_DESC(IWN_GP_DRIVER);
>		IWN_DESC(IWN_UCODE_GP1);
>		IWN_DESC(IWN_UCODE_GP2);
>		IWN_DESC(IWN_LED);
>		IWN_DESC(IWN_DRAM_INT_TBL);
>		IWN_DESC(IWN_GIO_CHICKEN);
>		IWN_DESC(IWN_ANA_PLL);
>		IWN_DESC(IWN_HW_REV_WA);
>		IWN_DESC(IWN_DBG_HPET_MEM);
>	default:
>		return "UNKNOWN CSR";
>	}
>}
>
>/*
> * This function print firmware register
> */
>static void
>iwn_debug_register(struct iwn_softc *sc)
>{
>	int i;
>	static const uint32_t csr_tbl[] = {
>		IWN_HW_IF_CONFIG,
>		IWN_INT_COALESCING,
>		IWN_INT,
>		IWN_INT_MASK,
>		IWN_FH_INT,
>		IWN_GPIO_IN,
>		IWN_RESET,
>		IWN_GP_CNTRL,
>		IWN_HW_REV,
>		IWN_EEPROM,
>		IWN_EEPROM_GP,
>		IWN_OTP_GP,
>		IWN_GIO,
>		IWN_GP_UCODE,
>		IWN_GP_DRIVER,
>		IWN_UCODE_GP1,
>		IWN_UCODE_GP2,
>		IWN_LED,
>		IWN_DRAM_INT_TBL,
>		IWN_GIO_CHICKEN,
>		IWN_ANA_PLL,
>		IWN_HW_REV_WA,
>		IWN_DBG_HPET_MEM,
>	};
>	DPRINTF(sc, IWN_DEBUG_REGISTER,
>	    "CSR values: (2nd byte of IWN_INT_COALESCING is IWN_INT_PERIODIC)%s",
>	    "\n");
>	for (i = 0; i <  nitems(csr_tbl); i++){
>		DPRINTF(sc, IWN_DEBUG_REGISTER,"  %10s: 0x%08x ",
>			iwn_get_csr_string(csr_tbl[i]), IWN_READ(sc, csr_tbl[i]));
>		if ((i+1) % 3 == 0)
>			DPRINTF(sc, IWN_DEBUG_REGISTER,"%s","\n");
>	}
>	DPRINTF(sc, IWN_DEBUG_REGISTER,"%s","\n");
>}
>#endif
>
>

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Attachments on bug 213444: 175963 | 175964 | 175965 | 175966 | 175967 | 175969 | 175978 | 175979