Attachment #152662 for bug #197143

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 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#define VERSION "20071127"

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");


 */

#include "opt_wlan.h"
#include "opt_wpi.h"

#include <sys/param.h>
#include <sys/sysctl.h>

#include <net/if_media.h>
#include <net/if_types.h>

#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/in_var.h>
#include <netinet/if_ether.h>
#include <netinet/ip.h>

#include <net80211/ieee80211_var.h>
#include <net80211/ieee80211_radiotap.h>
#include <net80211/ieee80211_regdomain.h>
#include <net80211/ieee80211_ratectl.h>

#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/in_var.h>
#include <netinet/ip.h>
#include <netinet/if_ether.h>

#include <dev/wpi/if_wpireg.h>
#include <dev/wpi/if_wpivar.h>
#include <dev/wpi/if_wpi_debug.h>

#define WPI_DEBUG

#ifdef WPI_DEBUG
#define DPRINTF(x)	do { if (wpi_debug != 0) printf x; } while (0)
#define DPRINTFN(n, x)	do { if (wpi_debug & n) printf x; } while (0)
#define	WPI_DEBUG_SET	(wpi_debug != 0)

enum {
	WPI_DEBUG_UNUSED	= 0x00000001,   /* Unused */
	WPI_DEBUG_HW		= 0x00000002,   /* Stage 1 (eeprom) debugging */
	WPI_DEBUG_TX		= 0x00000004,   /* Stage 2 TX intrp debugging*/
	WPI_DEBUG_RX		= 0x00000008,   /* Stage 2 RX intrp debugging */
	WPI_DEBUG_CMD		= 0x00000010,   /* Stage 2 CMD intrp debugging*/
	WPI_DEBUG_FIRMWARE	= 0x00000020,   /* firmware(9) loading debug  */
	WPI_DEBUG_DMA		= 0x00000040,   /* DMA (de)allocations/syncs  */
	WPI_DEBUG_SCANNING	= 0x00000080,   /* Stage 2 Scanning debugging */
	WPI_DEBUG_NOTIFY	= 0x00000100,   /* State 2 Noftif intr debug */
	WPI_DEBUG_TEMP		= 0x00000200,   /* TXPower/Temp Calibration */
	WPI_DEBUG_OPS		= 0x00000400,   /* wpi_ops taskq debug */
	WPI_DEBUG_WATCHDOG	= 0x00000800,   /* Watch dog debug */
	WPI_DEBUG_ANY		= 0xffffffff
};

static int wpi_debug;
SYSCTL_INT(_debug, OID_AUTO, wpi, CTLFLAG_RWTUN, &wpi_debug, 0, "wpi debug level");

#else
#define DPRINTF(x)
#define DPRINTFN(n, x)
#define WPI_DEBUG_SET	0
#endif

struct wpi_ident {
	uint16_t	vendor;
	uint16_t	device;

	{ 0, 0, 0, NULL }
};

static int	wpi_probe(device_t);
static int	wpi_attach(device_t);
static void	wpi_radiotap_attach(struct wpi_softc *);
static void	wpi_sysctlattach(struct wpi_softc *);
static struct ieee80211vap *wpi_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	wpi_vap_delete(struct ieee80211vap *);
static int	wpi_detach(device_t);
static int	wpi_shutdown(device_t);
static int	wpi_suspend(device_t);
static int	wpi_resume(device_t);
static int	wpi_nic_lock(struct wpi_softc *);
static int	wpi_read_prom_data(struct wpi_softc *, uint32_t, void *, int);
static void	wpi_dma_map_addr(void *, bus_dma_segment_t *, int, int);
static int	wpi_dma_contig_alloc(struct wpi_softc *, struct wpi_dma_info *,
		    void **, bus_size_t, bus_size_t);
static void	wpi_dma_contig_free(struct wpi_dma_info *);
static void	wpi_dma_map_addr(void *, bus_dma_segment_t *, int, int);
static int	wpi_alloc_shared(struct wpi_softc *);
static void	wpi_free_shared(struct wpi_softc *);
static int	wpi_alloc_fwmem(struct wpi_softc *);
static void	wpi_free_fwmem(struct wpi_softc *);
static int	wpi_alloc_rx_ring(struct wpi_softc *);
static void	wpi_update_rx_ring(struct wpi_softc *);
static void	wpi_reset_rx_ring(struct wpi_softc *);
static void	wpi_free_rx_ring(struct wpi_softc *);
static int	wpi_alloc_tx_ring(struct wpi_softc *, struct wpi_tx_ring *,
		    int);
static void	wpi_update_tx_ring(struct wpi_softc *, struct wpi_tx_ring *);
static void	wpi_reset_tx_ring(struct wpi_softc *, struct wpi_tx_ring *);
static void	wpi_free_tx_ring(struct wpi_softc *, struct wpi_tx_ring *);
static int	wpi_read_eeprom(struct wpi_softc *,
		    uint8_t macaddr[IEEE80211_ADDR_LEN]);
static uint32_t	wpi_eeprom_channel_flags(struct wpi_eeprom_chan *);
static void	wpi_read_eeprom_band(struct wpi_softc *, int);
static int	wpi_read_eeprom_channels(struct wpi_softc *, int);
static struct wpi_eeprom_chan *wpi_find_eeprom_channel(struct wpi_softc *,
		    struct ieee80211_channel *);
static int	wpi_setregdomain(struct ieee80211com *,
		    struct ieee80211_regdomain *, int,
		    struct ieee80211_channel[]);
static int	wpi_read_eeprom_group(struct wpi_softc *, int);
static void	wpi_node_free(struct ieee80211_node *);
static struct ieee80211_node *wpi_node_alloc(struct ieee80211vap *,
		    const uint8_t mac[IEEE80211_ADDR_LEN]);
static int	wpi_newstate(struct ieee80211vap *, enum ieee80211_state, int);
static void	wpi_calib_timeout(void *);
static void	wpi_rx_done(struct wpi_softc *, struct wpi_rx_desc *,
static uint32_t	wpi_mem_read(struct wpi_softc *, uint16_t);
static void	wpi_mem_write(struct wpi_softc *, uint16_t, uint32_t);
static void	wpi_mem_write_region_4(struct wpi_softc *, uint16_t,
		    const uint32_t *, int);
static uint16_t	wpi_read_prom_data(struct wpi_softc *, uint32_t, void *, int);
static int	wpi_alloc_fwmem(struct wpi_softc *);
static void	wpi_free_fwmem(struct wpi_softc *);
static int	wpi_load_firmware(struct wpi_softc *);
static void	wpi_unload_firmware(struct wpi_softc *);
static int	wpi_load_microcode(struct wpi_softc *, const uint8_t *, int);
static void	wpi_rx_intr(struct wpi_softc *, struct wpi_rx_desc *,
		    struct wpi_rx_data *);
static void	wpi_rx_statistics(struct wpi_softc *, struct wpi_rx_desc *,
		    struct wpi_rx_data *);
static void	wpi_tx_done(struct wpi_softc *, struct wpi_rx_desc *);
static void	wpi_cmd_done(struct wpi_softc *, struct wpi_rx_desc *);
static void	wpi_notif_intr(struct wpi_softc *);
static void	wpi_wakeup_intr(struct wpi_softc *);
static void	wpi_fatal_intr(struct wpi_softc *);
static void	wpi_intr(void *);
static int	wpi_cmd2(struct wpi_softc *, struct wpi_buf *);
static void	wpi_watchdog(void *);
static int	wpi_tx_data(struct wpi_softc *, struct mbuf *,
		    struct ieee80211_node *);
static int	wpi_tx_data_raw(struct wpi_softc *, struct mbuf *,
		    struct ieee80211_node *,
		    const struct ieee80211_bpf_params *);
static int	wpi_raw_xmit(struct ieee80211_node *, struct mbuf *,
		    const struct ieee80211_bpf_params *);
static void	wpi_start(struct ifnet *);
static void	wpi_start_locked(struct ifnet *);
static void	wpi_watchdog_rfkill(void *);
static void	wpi_watchdog(void *);
static void	wpi_scan_start(struct ieee80211com *);
static void	wpi_scan_end(struct ieee80211com *);
static void	wpi_set_channel(struct ieee80211com *);
static void	wpi_scan_curchan(struct ieee80211_scan_state *, unsigned long);
static void	wpi_scan_mindwell(struct ieee80211_scan_state *);
static int	wpi_ioctl(struct ifnet *, u_long, caddr_t);
static int	wpi_cmd(struct wpi_softc *, int, const void *, size_t, int);
		    uint8_t macaddr[IEEE80211_ADDR_LEN]);
static void	wpi_read_eeprom_channels(struct wpi_softc *, int);
static void	wpi_read_eeprom_group(struct wpi_softc *, int);
static int	wpi_cmd(struct wpi_softc *, int, const void *, int, int);
static int	wpi_wme_update(struct ieee80211com *);
static int	wpi_mrr_setup(struct wpi_softc *);
static int	wpi_add_node(struct wpi_softc *, struct ieee80211_node *);
static int	wpi_add_broadcast_node(struct wpi_softc *, int);
static int	wpi_add_ibss_node(struct wpi_softc *, struct ieee80211_node *);
static void	wpi_del_node(struct wpi_softc *, struct ieee80211_node *);
static int	wpi_updateedca(struct ieee80211com *);
static void	wpi_set_promisc(struct wpi_softc *);
static void	wpi_update_promisc(struct ifnet *);
static void	wpi_update_mcast(struct ifnet *);
static void	wpi_set_led(struct wpi_softc *, uint8_t, uint8_t, uint8_t);
static int	wpi_set_timing(struct wpi_softc *, struct ieee80211_node *);
static void	wpi_power_calibration(struct wpi_softc *);
static int	wpi_set_txpower(struct wpi_softc *, int);
static int	wpi_get_power_index(struct wpi_softc *,
		    struct wpi_power_group *, struct ieee80211_channel *, int);
static int	wpi_set_pslevel(struct wpi_softc *, uint8_t, int, int);
static int	wpi_send_btcoex(struct wpi_softc *);
static int	wpi_send_rxon(struct wpi_softc *, int, int);
static int	wpi_config(struct wpi_softc *);
static uint16_t	wpi_get_active_dwell_time(struct wpi_softc *,
		    struct ieee80211_channel *, uint8_t);
static uint16_t	wpi_limit_dwell(struct wpi_softc *, uint16_t);
static uint16_t	wpi_get_passive_dwell_time(struct wpi_softc *,
		    struct ieee80211_channel *);
static int	wpi_scan(struct wpi_softc *, struct ieee80211_channel *);
static int	wpi_auth(struct wpi_softc *, struct ieee80211vap *);
static void	wpi_update_beacon(struct ieee80211vap *, int);
static int	wpi_setup_beacon(struct wpi_softc *, struct ieee80211_node *);
#endif
static int	wpi_auth(struct wpi_softc *, struct ieee80211vap *);
static int	wpi_run(struct wpi_softc *, struct ieee80211vap *);
static int	wpi_key_alloc(struct ieee80211vap *, struct ieee80211_key *,
		    ieee80211_keyix *, ieee80211_keyix *);
static int	wpi_key_set(struct ieee80211vap *,
		    const struct ieee80211_key *,
		    const uint8_t mac[IEEE80211_ADDR_LEN]);
static int	wpi_key_delete(struct ieee80211vap *,
		    const struct ieee80211_key *);
static int	wpi_post_alive(struct wpi_softc *);
static int	wpi_load_bootcode(struct wpi_softc *, const uint8_t *, int);
static int	wpi_load_firmware(struct wpi_softc *);
static int	wpi_read_firmware(struct wpi_softc *);
static void	wpi_unload_firmware(struct wpi_softc *);
static int	wpi_clock_wait(struct wpi_softc *);
static int	wpi_apm_init(struct wpi_softc *);
static void	wpi_apm_stop_master(struct wpi_softc *);
static void	wpi_apm_stop(struct wpi_softc *);
static void	wpi_nic_config(struct wpi_softc *);
static int	wpi_hw_init(struct wpi_softc *);
static void	wpi_hw_stop(struct wpi_softc *);
static void	wpi_radio_on(void *, int);
static void	wpi_radio_off(void *, int);
static void	wpi_init_locked(struct wpi_softc *);
static void	wpi_init(void *);
static void	wpi_stop_locked(struct wpi_softc *);
static void	wpi_stop(struct wpi_softc *);
static void	wpi_scan_start(struct ieee80211com *);
static void	wpi_scan_end(struct ieee80211com *);
static void	wpi_set_channel(struct ieee80211com *);
static void	wpi_scan_curchan(struct ieee80211_scan_state *, unsigned long);
static void	wpi_scan_mindwell(struct ieee80211_scan_state *);
static void	wpi_hw_reset(void *, int);

static int	wpi_set_txpower(struct wpi_softc *, struct ieee80211_channel *,
		    int);
static void	wpi_calib_timeout(void *);
static void	wpi_power_calibration(struct wpi_softc *, int);
static int	wpi_get_power_index(struct wpi_softc *,
		    struct wpi_power_group *, struct ieee80211_channel *, int);
#ifdef WPI_DEBUG
static const char *wpi_cmd_str(int);
#endif
static int wpi_probe(device_t);
static int wpi_attach(device_t);
static int wpi_detach(device_t);
static int wpi_shutdown(device_t);
static int wpi_suspend(device_t);
static int wpi_resume(device_t);

static device_method_t wpi_methods[] = {
	/* Device interface */
	DEVMETHOD(device_probe,		wpi_probe),

	wpi_methods,
	sizeof (struct wpi_softc)
};

static devclass_t wpi_devclass;

DRIVER_MODULE(wpi, pci, wpi_driver, wpi_devclass, NULL, NULL);


MODULE_VERSION(wpi, 1);

MODULE_DEPEND(wpi, pci,  1, 1, 1);
MODULE_DEPEND(wpi, wlan, 1, 1, 1);
MODULE_DEPEND(wpi, firmware, 1, 1, 1);
	0xd, 0xf, 0x5, 0x7, 0x9, 0xb, 0x1, 0x3,
	/* CCK: device-dependent */
	10, 20, 55, 110
};

static const uint8_t wpi_ridx_to_rate[] = {
	12, 18, 24, 36, 48, 72, 96, 108, /* OFDM */
	2, 4, 11, 22 /*CCK */
};

static int
wpi_probe(device_t dev)
{

	return ENXIO;
}

/**
 * Load the firmare image from disk to the allocated dma buffer.
 * we also maintain the reference to the firmware pointer as there
 * is times where we may need to reload the firmware but we are not
 * in a context that can access the filesystem (ie taskq cause by restart)
 *
 * @return 0 on success, an errno on failure
 */
static int
wpi_load_firmware(struct wpi_softc *sc)
{
	const struct firmware *fp;
	struct wpi_dma_info *dma = &sc->fw_dma;
	const struct wpi_firmware_hdr *hdr;
	const uint8_t *itext, *idata, *rtext, *rdata, *btext;
	uint32_t itextsz, idatasz, rtextsz, rdatasz, btextsz;
	int error;

	DPRINTFN(WPI_DEBUG_FIRMWARE,
	    ("Attempting Loading Firmware from wpi_fw module\n"));

	WPI_UNLOCK(sc);

	if (sc->fw_fp == NULL && (sc->fw_fp = firmware_get("wpifw")) == NULL) {
		device_printf(sc->sc_dev,
		    "could not load firmware image 'wpifw'\n");
		error = ENOENT;
		WPI_LOCK(sc);
		goto fail;
	}

	fp = sc->fw_fp;

	WPI_LOCK(sc);

	/* Validate the firmware is minimum a particular version */
	if (fp->version < WPI_FW_MINVERSION) {
	    device_printf(sc->sc_dev,
			   "firmware version is too old. Need %d, got %d\n",
			   WPI_FW_MINVERSION,
			   fp->version);
	    error = ENXIO;
	    goto fail;
	}

	if (fp->datasize < sizeof (struct wpi_firmware_hdr)) {
		device_printf(sc->sc_dev,
		    "firmware file too short: %zu bytes\n", fp->datasize);
		error = ENXIO;
		goto fail;
	}

	hdr = (const struct wpi_firmware_hdr *)fp->data;

	/*     |  RUNTIME FIRMWARE   |    INIT FIRMWARE    | BOOT FW  |
	   |HDR|<--TEXT-->|<--DATA-->|<--TEXT-->|<--DATA-->|<--TEXT-->| */

	rtextsz = le32toh(hdr->rtextsz);
	rdatasz = le32toh(hdr->rdatasz);
	itextsz = le32toh(hdr->itextsz);
	idatasz = le32toh(hdr->idatasz);
	btextsz = le32toh(hdr->btextsz);

	/* check that all firmware segments are present */
	if (fp->datasize < sizeof (struct wpi_firmware_hdr) +
		rtextsz + rdatasz + itextsz + idatasz + btextsz) {
		device_printf(sc->sc_dev,
		    "firmware file too short: %zu bytes\n", fp->datasize);
		error = ENXIO; /* XXX appropriate error code? */
		goto fail;
	}

	/* get pointers to firmware segments */
	rtext = (const uint8_t *)(hdr + 1);
	rdata = rtext + rtextsz;
	itext = rdata + rdatasz;
	idata = itext + itextsz;
	btext = idata + idatasz;

	DPRINTFN(WPI_DEBUG_FIRMWARE,
	    ("Firmware Version: Major %d, Minor %d, Driver %d, \n"
	     "runtime (text: %u, data: %u) init (text: %u, data %u) boot (text %u)\n",
	     (le32toh(hdr->version) & 0xff000000) >> 24,
	     (le32toh(hdr->version) & 0x00ff0000) >> 16,
	     (le32toh(hdr->version) & 0x0000ffff),
	     rtextsz, rdatasz,
	     itextsz, idatasz, btextsz));

	DPRINTFN(WPI_DEBUG_FIRMWARE,("rtext 0x%x\n", *(const uint32_t *)rtext));
	DPRINTFN(WPI_DEBUG_FIRMWARE,("rdata 0x%x\n", *(const uint32_t *)rdata));
	DPRINTFN(WPI_DEBUG_FIRMWARE,("itext 0x%x\n", *(const uint32_t *)itext));
	DPRINTFN(WPI_DEBUG_FIRMWARE,("idata 0x%x\n", *(const uint32_t *)idata));
	DPRINTFN(WPI_DEBUG_FIRMWARE,("btext 0x%x\n", *(const uint32_t *)btext));

	/* sanity checks */
	if (rtextsz > WPI_FW_MAIN_TEXT_MAXSZ ||
	    rdatasz > WPI_FW_MAIN_DATA_MAXSZ ||
	    itextsz > WPI_FW_INIT_TEXT_MAXSZ ||
	    idatasz > WPI_FW_INIT_DATA_MAXSZ ||
	    btextsz > WPI_FW_BOOT_TEXT_MAXSZ ||
	    (btextsz & 3) != 0) {
		device_printf(sc->sc_dev, "firmware invalid\n");
		error = EINVAL;
		goto fail;
	}

	/* copy initialization images into pre-allocated DMA-safe memory */
	memcpy(dma->vaddr, idata, idatasz);
	memcpy(dma->vaddr + WPI_FW_INIT_DATA_MAXSZ, itext, itextsz);

	bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE);

	/* tell adapter where to find initialization images */
	wpi_mem_lock(sc);
	wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr);
	wpi_mem_write(sc, WPI_MEM_DATA_SIZE, idatasz);
	wpi_mem_write(sc, WPI_MEM_TEXT_BASE,
	    dma->paddr + WPI_FW_INIT_DATA_MAXSZ);
	wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, itextsz);
	wpi_mem_unlock(sc);

	/* load firmware boot code */
	if ((error = wpi_load_microcode(sc, btext, btextsz)) != 0) {
	    device_printf(sc->sc_dev, "Failed to load microcode\n");
	    goto fail;
	}

	/* now press "execute" */
	WPI_WRITE(sc, WPI_RESET, 0);

	/* wait at most one second for the first alive notification */
	if ((error = msleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) {
		device_printf(sc->sc_dev,
		    "timeout waiting for adapter to initialize\n");
		goto fail;
	}

	/* copy runtime images into pre-allocated DMA-sage memory */
	memcpy(dma->vaddr, rdata, rdatasz);
	memcpy(dma->vaddr + WPI_FW_MAIN_DATA_MAXSZ, rtext, rtextsz);
	bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE);

	/* tell adapter where to find runtime images */
	wpi_mem_lock(sc);
	wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr);
	wpi_mem_write(sc, WPI_MEM_DATA_SIZE, rdatasz);
	wpi_mem_write(sc, WPI_MEM_TEXT_BASE,
	    dma->paddr + WPI_FW_MAIN_DATA_MAXSZ);
	wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, WPI_FW_UPDATED | rtextsz);
	wpi_mem_unlock(sc);

	/* wait at most one second for the first alive notification */
	if ((error = msleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) {
		device_printf(sc->sc_dev,
		    "timeout waiting for adapter to initialize2\n");
		goto fail;
	}

	DPRINTFN(WPI_DEBUG_FIRMWARE,
	    ("Firmware loaded to driver successfully\n"));
	return error;
fail:
	wpi_unload_firmware(sc);
	return error;
}

/**
 * Free the referenced firmware image
 */
static void
wpi_unload_firmware(struct wpi_softc *sc)
{

	if (sc->fw_fp) {
		WPI_UNLOCK(sc);
		firmware_put(sc->fw_fp, FIRMWARE_UNLOAD);
		WPI_LOCK(sc);
		sc->fw_fp = NULL;
	}
}

static int
wpi_attach(device_t dev)
{
	struct wpi_softc *sc = (struct wpi_softc *)device_get_softc(dev);
	struct ieee80211com *ic;
	struct ifnet *ifp;
	int i, error, rid, supportsa = 1;
	int ac, error, rid, supportsa = 1;
	uint32_t tmp;
	const struct wpi_ident *ident;
	uint8_t macaddr[IEEE80211_ADDR_LEN];

	sc->sc_dev = dev;

#ifdef	WPI_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, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __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;
	}

	/*
	 * Some card's only support 802.11b/g not a, check to see if
	 * this is one such card. A 0x0 in the subdevice table indicates
	 * the entire subdevice range is to be ignored.

		}
	}

	/* Clear device-specific "PCI retry timeout" register (41h). */
	TASK_INIT(&sc->sc_restarttask, 0, wpi_hwreset, sc);
	TASK_INIT(&sc->sc_radiotask, 0, wpi_rfreset, sc);

	WPI_LOCK_INIT(sc);

	callout_init_mtx(&sc->calib_to, &sc->sc_mtx, 0);
	callout_init_mtx(&sc->watchdog_to, &sc->sc_mtx, 0);

	/* disable the retry timeout register */
	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;
	}

	WPI_LOCK_INIT(sc);

	sc->sc_unr = new_unrhdr(WPI_ID_IBSS_MIN, WPI_ID_IBSS_MAX, &sc->sc_mtx);

	/* Allocate DMA memory for firmware transfers. */
	if ((error = wpi_alloc_fwmem(sc)) != 0) {
		device_printf(dev,
		    "could not allocate memory for firmware, error %d\n",
		    error);
		goto fail;
	}

	/* Allocate shared page. */
	 * Put adapter into a known state.
	 */
	if ((error = wpi_reset(sc)) != 0) {
		device_printf(dev, "could not reset adapter\n");
		goto fail;
	}

	wpi_mem_lock(sc);
	tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV);
	if (bootverbose || WPI_DEBUG_SET)
	    device_printf(sc->sc_dev, "Hardware Revision (0x%X)\n", tmp);

	wpi_mem_unlock(sc);

	/* Allocate shared page */
	if ((error = wpi_alloc_shared(sc)) != 0) {
		device_printf(dev, "could not allocate shared page\n");
		goto fail;
	}

	/* Allocate TX rings - 4 for QoS purposes, 1 for commands. */
	for (i = 0; i < WPI_NTXQUEUES; i++) {
		if ((error = wpi_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 = wpi_alloc_rx_ring(sc)) != 0) {
		device_printf(dev, "could not allocate RX ring, error %d\n",
		    error);
		goto fail;
	}

	/* Clear pending interrupts. */
	WPI_WRITE(sc, WPI_INT, 0xffffffff);
	if (error != 0) {
		device_printf(dev, "could not allocate Rx ring\n");
		goto fail;
	}

	ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211);
	if (ifp == NULL) {
		device_printf(dev, "can not allocate ifnet structure\n");
		error = ENOMEM;
		goto fail;
	}

	ic = ifp->if_l2com;

	ic->ic_ifp = ifp;
	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_IBSS		/* IBSS mode supported */
		| IEEE80211_C_MONITOR		/* monitor mode supported */
		| IEEE80211_C_AHDEMO		/* adhoc demo mode */
		| IEEE80211_C_BGSCAN		/* capable of bg scanning */
		| IEEE80211_C_TXPMGT		/* tx power management */
		| IEEE80211_C_SHSLOT		/* short slot time supported */
		| IEEE80211_C_WPA		/* 802.11i */
		| IEEE80211_C_SHPREAMBLE	/* short preamble supported */
		| IEEE80211_C_WPA		/* 802.11i */
/* XXX looks like WME is partly supported? */
#if 0
		| IEEE80211_C_IBSS		/* IBSS mode support */
		| IEEE80211_C_BGSCAN		/* capable of bg scanning */
		| IEEE80211_C_WME		/* 802.11e */
		| IEEE80211_C_HOSTAP		/* Host access point mode */
#endif
		| IEEE80211_C_WME		/* 802.11e */
		| IEEE80211_C_PMGT		/* Station-side power mgmt */
		;

	ic->ic_cryptocaps =
		  IEEE80211_CRYPTO_AES_CCM;

	/*
	 * Read in the eeprom and also setup the channels for
	 * net80211. We don't set the rates as net80211 does this for us
	 */
	if ((error = wpi_read_eeprom(sc, macaddr)) != 0) {
		device_printf(dev, "could not read EEPROM, error %d\n",
		    error);
		goto fail;
        }

#ifdef	WPI_DEBUG
	if (bootverbose) {
	    device_printf(sc->sc_dev, "Regulatory Domain: %.4s\n", sc->domain);
	    device_printf(sc->sc_dev, "Hardware Type: %c\n",
			  sc->type > 1 ? 'B': '?');

	    /* XXX hw_config uses the PCIDEV for the Hardware rev. Must check
	       what sc->rev really represents - benjsc 20070615 */
	}
#endif

	if_initname(ifp, device_get_name(dev), device_get_unit(dev));
	ifp->if_softc = sc;

	IFQ_SET_READY(&ifp->if_snd);

	ieee80211_ifattach(ic, macaddr);
	ic->ic_vap_create = wpi_vap_create;
	ic->ic_vap_delete = wpi_vap_delete;
	ic->ic_raw_xmit = wpi_raw_xmit;
	ic->ic_node_alloc = wpi_node_alloc;
	sc->sc_node_free = ic->ic_node_free;
	ic->ic_node_free = wpi_node_free;
	ic->ic_wme.wme_update = wpi_updateedca;
	ic->ic_update_promisc = wpi_update_promisc;
	ic->ic_update_mcast = wpi_update_mcast;
	ic->ic_scan_start = wpi_scan_start;
	ic->ic_scan_end = wpi_scan_end;
	ic->ic_set_channel = wpi_set_channel;
	sc->sc_scan_curchan = ic->ic_scan_curchan;
	ic->ic_scan_curchan = wpi_scan_curchan;
	ic->ic_scan_mindwell = wpi_scan_mindwell;
	ic->ic_setregdomain = wpi_setregdomain;

	wpi_radiotap_attach(sc);
	ic->ic_vap_delete = wpi_vap_delete;

	callout_init_mtx(&sc->calib_to, &sc->sc_mtx, 0);
	callout_init_mtx(&sc->watchdog_to, &sc->sc_mtx, 0);
	callout_init_mtx(&sc->watchdog_rfkill, &sc->sc_mtx, 0);
	TASK_INIT(&sc->sc_reinittask, 0, wpi_hw_reset, sc);
	TASK_INIT(&sc->sc_radiooff_task, 0, wpi_radio_off, sc);
	TASK_INIT(&sc->sc_radioon_task, 0, wpi_radio_on, sc);

	wpi_sysctlattach(sc);

	/*
	 * Hook our interrupt after all initialization is complete.
	 */
	error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE,
	    NULL, wpi_intr, sc, &sc->sc_ih);
	if (error != 0) {
		device_printf(dev, "can't establish interrupt, error %d\n",
		    error);
		goto fail;
	}

	if (bootverbose)
		ieee80211_announce(ic);

#ifdef WPI_DEBUG
	if (sc->sc_debug & WPI_DEBUG_HW)
		ieee80211_announce_channels(ic);
#endif

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__);
	return 0;

fail:	wpi_detach(dev);
	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__);
	return error;
}

/*
 * Attach the interface to 802.11 radiotap.
 */
static void
wpi_radiotap_attach(struct wpi_softc *sc)
{
	struct ifnet *ifp = sc->sc_ifp;
	struct ieee80211com *ic = ifp->if_l2com;
	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__);
	ieee80211_radiotap_attach(ic,
	    &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
		WPI_TX_RADIOTAP_PRESENT,
	    &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
		WPI_RX_RADIOTAP_PRESENT);
	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__);
}

static void
wpi_sysctlattach(struct wpi_softc *sc)
{
#ifdef  WPI_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 *
wpi_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 wpi_vap *wvp;
	struct wpi_buf *bcn;
	struct ieee80211vap *vap;

	if (!TAILQ_EMPTY(&ic->ic_vaps))		/* only one at a time */
		return NULL;

	wvp = (struct wpi_vap *) malloc(sizeof(struct wpi_vap),
	    M_80211_VAP, M_NOWAIT | M_ZERO);
	if (wvp == NULL)
		return NULL;
	vap = &wvp->vap;
	ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac);

	bcn = &wvp->wv_bcbuf;
	bcn->data = NULL;

	/* Override with driver methods. */
	wvp->newstate = vap->iv_newstate;
	vap->iv_key_alloc = wpi_key_alloc;
	vap->iv_key_set = wpi_key_set;
	vap->iv_key_delete = wpi_key_delete;
	vap->iv_newstate = wpi_newstate;
	vap->iv_update_beacon = wpi_update_beacon;

	ieee80211_ratectl_init(vap);
	/* Complete setup. */
	ieee80211_vap_attach(vap, ieee80211_media_change, ieee80211_media_status);
	ic->ic_opmode = opmode;
	return vap;
}

static void
wpi_vap_delete(struct ieee80211vap *vap)
{
	struct wpi_vap *wvp = WPI_VAP(vap);
	struct wpi_buf *bcn = &wvp->wv_bcbuf;

	ieee80211_ratectl_deinit(vap);
	ieee80211_vap_detach(vap);

	if (bcn->data != NULL)
		free(bcn->data, M_DEVBUF);
	free(wvp, M_80211_VAP);
}

static int
wpi_detach(device_t dev)
{

	struct wpi_softc *sc = device_get_softc(dev);
	struct ifnet *ifp = sc->sc_ifp;
	struct ieee80211com *ic;
	int qid;

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__);
		bus_teardown_intr(dev, sc->irq, sc->sc_ih);

	if (ifp != NULL) {
		ic = ifp->if_l2com;

		ieee80211_draintask(ic, &sc->sc_reinittask);
		ieee80211_draintask(ic, &sc->sc_radiooff_task);

		wpi_stop(sc);

		callout_drain(&sc->watchdog_to);
		callout_drain(&sc->watchdog_rfkill);
		callout_drain(&sc->calib_to);
		ieee80211_ifdetach(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);
	}

	if (sc->txq[0].data_dmat) {
		/* Free DMA resources. */
		for (qid = 0; qid < WPI_NTXQUEUES; qid++)
			wpi_free_tx_ring(sc, &sc->txq[qid]);

		wpi_free_rx_ring(sc);
		wpi_free_rx_ring(sc, &sc->rxq);
		wpi_free_shared(sc);
	}

	if (sc->fw_fp != NULL) {
		wpi_unload_firmware(sc);
	}

	if (sc->fw_dma.tag)
		wpi_free_fwmem(sc);
		

	if (sc->irq != NULL)
		bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq),
		    sc->irq);
	if (sc->mem != NULL)
		bus_release_resource(dev, SYS_RES_MEMORY,
		    rman_get_rid(sc->mem), sc->mem);

	if (ifp != NULL)
		if_free(ifp);

	delete_unrhdr(sc->sc_unr);

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__);
	WPI_LOCK_DESTROY(sc);
	return 0;
}

static int
wpi_shutdown(device_t dev)
{
	struct wpi_softc *sc = device_get_softc(dev);

	wpi_stop(sc);
	return 0;
}

static int
wpi_suspend(device_t dev)
    enum ieee80211_opmode opmode, int flags,
    const uint8_t bssid[IEEE80211_ADDR_LEN],
    const uint8_t mac[IEEE80211_ADDR_LEN])
{
	struct wpi_softc *sc = device_get_softc(dev);
	struct ieee80211com *ic = sc->sc_ifp->if_l2com;

	ieee80211_suspend_all(ic);
	return 0;
}
	    M_80211_VAP, M_NOWAIT | M_ZERO);
	if (wvp == NULL)
		return NULL;
	vap = &wvp->vap;
	ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac);
	/* override with driver methods */
	wvp->newstate = vap->iv_newstate;
	vap->iv_newstate = wpi_newstate;

static int
wpi_resume(device_t dev)
{
	struct wpi_softc *sc = device_get_softc(dev);
	struct ieee80211com *ic = sc->sc_ifp->if_l2com;

	/* Clear device-specific "PCI retry timeout" register (41h). */
	pci_write_config(dev, 0x41, 0, 1);

	ieee80211_resume_all(ic);
	return 0;
}

/*
 * Grab exclusive access to NIC memory.
 */
static int
wpi_nic_lock(struct wpi_softc *sc)
{
	int ntries;

	/* Request exclusive access to NIC. */
	WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ);

	/* Spin until we actually get the lock. */
	for (ntries = 0; ntries < 1000; ntries++) {
		if ((WPI_READ(sc, WPI_GP_CNTRL) &
		     (WPI_GP_CNTRL_MAC_ACCESS_ENA | WPI_GP_CNTRL_SLEEP)) ==
		    WPI_GP_CNTRL_MAC_ACCESS_ENA)
			return 0;
		DELAY(10);
	}

	device_printf(sc->sc_dev, "could not lock memory\n");

	return ETIMEDOUT;
}

/*
 * Release lock on NIC memory.
 */
static __inline void
wpi_nic_unlock(struct wpi_softc *sc)
{
	WPI_CLRBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ);
}

static __inline uint32_t
wpi_prph_read(struct wpi_softc *sc, uint32_t addr)
{
	WPI_WRITE(sc, WPI_PRPH_RADDR, WPI_PRPH_DWORD | addr);
	WPI_BARRIER_READ_WRITE(sc);
	return WPI_READ(sc, WPI_PRPH_RDATA);
}

static __inline void
wpi_prph_write(struct wpi_softc *sc, uint32_t addr, uint32_t data)
{
	WPI_WRITE(sc, WPI_PRPH_WADDR, WPI_PRPH_DWORD | addr);
	WPI_BARRIER_WRITE(sc);
	WPI_WRITE(sc, WPI_PRPH_WDATA, data);
}

static __inline void
wpi_prph_setbits(struct wpi_softc *sc, uint32_t addr, uint32_t mask)
{
	wpi_prph_write(sc, addr, wpi_prph_read(sc, addr) | mask);
}

static __inline void
wpi_prph_clrbits(struct wpi_softc *sc, uint32_t addr, uint32_t mask)
{
	wpi_prph_write(sc, addr, wpi_prph_read(sc, addr) & ~mask);
}

static __inline void
wpi_prph_write_region_4(struct wpi_softc *sc, uint32_t addr,
    const uint32_t *data, int count)
{
	for (; count > 0; count--, data++, addr += 4)
		wpi_prph_write(sc, addr, *data);
}

static __inline uint32_t
wpi_mem_read(struct wpi_softc *sc, uint32_t addr)
{
	WPI_WRITE(sc, WPI_MEM_RADDR, addr);
	WPI_BARRIER_READ_WRITE(sc);
	return WPI_READ(sc, WPI_MEM_RDATA);
}

static __inline void
wpi_mem_read_region_4(struct wpi_softc *sc, uint32_t addr, uint32_t *data,
    int count)
{
	for (; count > 0; count--, addr += 4)
		*data++ = wpi_mem_read(sc, addr);
}

static int
wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int count)
{
	uint8_t *out = data;
	uint32_t val;
	int error, ntries;

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__);

	if ((error = wpi_nic_lock(sc)) != 0)
		return error;

	for (; count > 0; count -= 2, addr++) {
		WPI_WRITE(sc, WPI_EEPROM, addr << 2);
		for (ntries = 0; ntries < 10; ntries++) {
			val = WPI_READ(sc, WPI_EEPROM);
			if (val & WPI_EEPROM_READ_VALID)
				break;
			DELAY(5);
		}
		if (ntries == 10) {
			device_printf(sc->sc_dev,
			    "timeout reading ROM at 0x%x\n", addr);
			return ETIMEDOUT;
		}
		*out++= val >> 16;
		if (count > 1)
			*out ++= val >> 24;
	}

	wpi_nic_unlock(sc);

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__);

	return 0;
}

static void
wpi_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;
}

/*
 * Allocates a contiguous block of dma memory of the requested size and
 * alignment.
 * allocations greater than 4096 may fail. Hence if the requested alignment is
 * greater we allocate 'alignment' size extra memory and shift the vaddr and
 * paddr after the dma load. This bypasses the problem at the cost of a little
 * more memory.
 */
static int
wpi_dma_contig_alloc(struct wpi_softc *sc, struct wpi_dma_info *dma,
    void **kvap, bus_size_t size, bus_size_t alignment)
{
	int error;
	bus_size_t align;
	bus_size_t reqsize;

	dma->tag = NULL;
	    ("Size: %zd - alignment %zd\n", size, alignment));

	dma->size = size;
	dma->tag = NULL;

	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, BUS_DMA_NOWAIT, NULL, NULL, &dma->tag);
	if (error != 0)
		align = alignment;
		reqsize = size;
	}
	error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), align,
	    0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR,
	    NULL, NULL, reqsize,
	    1, reqsize, flags,
	    NULL, NULL, &dma->tag);
	if (error != 0) {
		device_printf(sc->sc_dev,
		    "could not create shared page DMA tag\n");
		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)
		device_printf(sc->sc_dev,
		    "could not allocate shared page DMA memory\n");
		goto fail;
	}

	error = bus_dmamap_load(dma->tag, dma->map, dma->vaddr, size,
	    wpi_dma_map_addr, &dma->paddr, BUS_DMA_NOWAIT);
	if (error != 0)
		goto fail;

	bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE);
	dma->paddr = dma->paddr_start;
	dma->vaddr = dma->vaddr_start;

	/*
	 * Check the alignment and increment by 4096 until we get the
	 * requested alignment. Fail if can't obtain the alignment
	 * we requested.
	 */
	if ((dma->paddr & (alignment -1 )) != 0) {
		int i;

		for (i = 0; i < alignment / 4096; i++) {
			if ((dma->paddr & (alignment - 1 )) == 0)
				break;
			dma->paddr += 4096;
			dma->vaddr += 4096;
		}
		if (i == alignment / 4096) {
			device_printf(sc->sc_dev,
			    "alignment requirement was not satisfied\n");
			goto fail;
		}
	}

	if (error != 0) {
		device_printf(sc->sc_dev,
		    "could not load shared page DMA map\n");
		goto fail;
	}

	if (kvap != NULL)
		*kvap = dma->vaddr;

	return 0;

fail:	wpi_dma_contig_free(dma);
	wpi_dma_contig_free(dma);
	return error;
}


static void
wpi_dma_contig_free(struct wpi_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
wpi_alloc_shared(struct wpi_softc *sc)
{
	/* Shared buffer must be aligned on a 4KB boundary. */
	return wpi_dma_contig_alloc(sc, &sc->shared_dma,
	    (void **)&sc->shared, sizeof (struct wpi_shared), 4096);
	    (void **)&sc->shared, sizeof (struct wpi_shared),
	    PAGE_SIZE,
	    BUS_DMA_NOWAIT);

	if (error != 0) {
		device_printf(sc->sc_dev,
		    "could not allocate shared area DMA memory\n");
	}

	return error;
}

static void

	wpi_dma_contig_free(&sc->shared_dma);
}

/*
 * Allocate DMA-safe memory for firmware transfer.
 */
static int
wpi_alloc_fwmem(struct wpi_softc *sc)
{
	/* Must be aligned on a 16-byte boundary. */
	return wpi_dma_contig_alloc(sc, &sc->fw_dma, NULL,
	    WPI_FW_TEXT_MAXSZ + WPI_FW_DATA_MAXSZ, 16);
}

static void
wpi_free_fwmem(struct wpi_softc *sc)
{
	wpi_dma_contig_free(&sc->fw_dma);
}

static int
wpi_alloc_rx_ring(struct wpi_softc *sc)
{
	struct wpi_rx_ring *ring = &sc->rxq;
	bus_size_t size;
	int i, error;

	ring->cur = 0;
	ring->update = 0;

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__);

	/* Allocate RX descriptors (16KB aligned.) */
	size = WPI_RX_RING_COUNT * sizeof (uint32_t);
	error = wpi_dma_contig_alloc(sc, &ring->desc_dma,
	    (void **)&ring->desc, size, WPI_RING_DMA_ALIGN);
	    WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT);

	if (error != 0) {
		device_printf(sc->sc_dev,
		    "%s: could not allocate RX ring 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,
	    MJUMPAGESIZE, 1, MJUMPAGESIZE, BUS_DMA_NOWAIT, 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 < WPI_RX_RING_COUNT; i++) {
		struct wpi_rx_data *data = &ring->data[i];
		struct mbuf *m;
		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, MJUMPAGESIZE);
		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 *), MJUMPAGESIZE, wpi_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);
			m_freem(m);
			error = ENOMEM;	/* XXX unique code */
			goto fail;
		}
		bus_dmamap_sync(ring->data_dmat, data->map, 
		    BUS_DMASYNC_PREWRITE);

		/* Set physical address of RX buffer. */
		ring->desc[i] = htole32(paddr);
	}

	bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
	    BUS_DMASYNC_PREWRITE);

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__);

	return 0;

fail:	wpi_free_rx_ring(sc);

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__);

	return error;
}

static void
wpi_update_rx_ring(struct wpi_softc *sc)
{
	struct wpi_rx_ring *ring = &sc->rxq;

	if (WPI_READ(sc, WPI_UCODE_GP1) & WPI_UCODE_GP1_MAC_SLEEP) {
		DPRINTF(sc, WPI_DEBUG_PWRSAVE, "%s: wakeup request\n",
		    __func__);

		WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ);
		ring->update = 1;
	} else
		WPI_WRITE(sc, WPI_FH_RX_WPTR, ring->cur & ~7);
}

static void
wpi_reset_rx_ring(struct wpi_softc *sc)
{
	struct wpi_rx_ring *ring = &sc->rxq;
	int ntries;

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);

	if (wpi_nic_lock(sc) == 0) {
		WPI_WRITE(sc, WPI_FH_RX_CONFIG, 0);
		for (ntries = 0; ntries < 1000; ntries++) {
			if (WPI_READ(sc, WPI_FH_RX_STATUS) &
			    WPI_FH_RX_STATUS_IDLE)
				break;
			DELAY(10);
		}
#ifdef WPI_DEBUG
		if (ntries == 1000) {
			device_printf(sc->sc_dev,
			    "timeout resetting Rx ring\n");
		}
#endif
		wpi_nic_unlock(sc);
	}

	ring->cur = 0;
	ring->update = 0;
}

static void
wpi_free_rx_ring(struct wpi_softc *sc)
{
	struct wpi_rx_ring *ring = &sc->rxq;
	int i;

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);

	wpi_dma_contig_free(&ring->desc_dma);

	for (i = 0; i < WPI_RX_RING_COUNT; i++) {

			    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
wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, int qid)
	int qid)
{
	bus_addr_t paddr;
	bus_size_t size;
	int i, error;

	ring->qid = qid;
	ring->count = count;
	ring->queued = 0;
	ring->cur = 0;
	ring->update = 0;

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__);
		(void **)&ring->desc, count * sizeof (struct wpi_tx_desc),
		WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT);

	/* Allocate TX descriptors (16KB aligned.) */
	size = WPI_TX_RING_COUNT * sizeof (struct wpi_tx_desc);
	error = wpi_dma_contig_alloc(sc, &ring->desc_dma, (void **)&ring->desc,
	    size, WPI_RING_DMA_ALIGN);
	if (error != 0) {
		device_printf(sc->sc_dev,
		    "%s: could not allocate TX ring DMA memory, error %d\n",
		    __func__, error);
		goto fail;
	}

	/* Update shared area with ring physical address. */
	sc->shared->txbase[qid] = htole32(ring->desc_dma.paddr);
	bus_dmamap_sync(sc->shared_dma.tag, sc->shared_dma.map,
	    BUS_DMASYNC_PREWRITE);

	/*
	 * We only use rings 0 through 4 (4 EDCA + cmd) so there is no need
	 * to allocate commands space for other rings.
	 * XXX Do we really need to allocate descriptors for other rings?
	 */
	if (qid > 4)
		return 0;

	size = WPI_TX_RING_COUNT * sizeof (struct wpi_tx_cmd);
	error = wpi_dma_contig_alloc(sc, &ring->cmd_dma, (void **)&ring->cmd,
	    size, 4);
		BUS_DMA_NOWAIT);

	if (error != 0) {
		device_printf(sc->sc_dev,
		    "%s: could not allocate TX cmd DMA memory, error %d\n",
		    __func__, error);
		goto fail;
	}

	ring->data = malloc(count * sizeof (struct wpi_tx_data), M_DEVBUF,
	    M_NOWAIT | M_ZERO);
	if (ring->data == NULL) {
		device_printf(sc->sc_dev,
		    "could not allocate tx data slots\n");
		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,
	    WPI_MAX_SCATTER - 1, MCLBYTES, BUS_DMA_NOWAIT, 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 < WPI_TX_RING_COUNT; i++) {
		struct wpi_tx_data *data = &ring->data[i];

		data->cmd_paddr = paddr;
		paddr += sizeof (struct wpi_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;
		}
		bus_dmamap_sync(ring->data_dmat, data->map,
		    BUS_DMASYNC_PREWRITE);
	}

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__);

	return 0;

fail:	wpi_free_tx_ring(sc, ring);
	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__);
	return error;
}

static void
wpi_update_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring)
{
	if (WPI_READ(sc, WPI_UCODE_GP1) & WPI_UCODE_GP1_MAC_SLEEP) {
		DPRINTF(sc, WPI_DEBUG_PWRSAVE, "%s (%d): requesting wakeup\n",
		    __func__, ring->qid);

		WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ);
		ring->update = 1;
	} else
		WPI_WRITE(sc, WPI_HBUS_TARG_WRPTR, ring->qid << 8 | ring->cur);
}

static void
wpi_reset_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring)
{
	int i;
	int i, ntries;

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);

	for (i = 0; i < WPI_TX_RING_COUNT; i++) {
		struct wpi_tx_data *data = &ring->data[i];
		if (WPI_READ(sc, WPI_TX_STATUS) & WPI_TX_IDLE(ring->qid))
			break;
		DELAY(10);
	}
#ifdef WPI_DEBUG
	if (ntries == 100 && wpi_debug > 0)
		device_printf(sc->sc_dev, "timeout resetting Tx ring %d\n",
		    ring->qid);
#endif
	wpi_mem_unlock(sc);

	for (i = 0; i < ring->count; i++) {
		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;
		}
	}
	/* 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;
	ring->update = 0;
}

static void
wpi_free_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring)
{
	struct wpi_tx_data *data;
	int i;

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);

	wpi_dma_contig_free(&ring->desc_dma);
	wpi_dma_contig_free(&ring->cmd_dma);

	for (i = 0; i < WPI_TX_RING_COUNT; i++) {
		struct wpi_tx_data *data = &ring->data[i];
			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->map != NULL)
			bus_dmamap_destroy(ring->data_dmat, data->map);
	}
	if (ring->data_dmat != NULL) {
	if (ring->data_dmat != NULL)
		bus_dma_tag_destroy(ring->data_dmat);
		ring->data_dmat = NULL;
	}
}

/*
 * Extract various information from EEPROM.
 */
static int
wpi_read_eeprom(struct wpi_softc *sc, uint8_t macaddr[IEEE80211_ADDR_LEN])
{
#define WPI_CHK(res) do {		\
	if ((error = res) != 0)		\
		goto fail;		\
} while (0)
	int error, i;

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__);
	wpi_stop_locked(sc);
	wpi_unload_firmware(sc);
	WPI_UNLOCK(sc);

	/* Adapter has to be powered on for EEPROM access to work. */
	if ((error = wpi_apm_init(sc)) != 0) {
		device_printf(sc->sc_dev,
		    "%s: could not power ON adapter, error %d\n", __func__,
		    error);
		return error;
	}

	if ((WPI_READ(sc, WPI_EEPROM_GP) & 0x6) == 0) {
		device_printf(sc->sc_dev, "bad EEPROM signature\n");
		error = EIO;
		goto fail;
	}
	/* Clear HW ownership of EEPROM. */
	WPI_CLRBITS(sc, WPI_EEPROM_GP, WPI_EEPROM_GP_IF_OWNER);

	/* Read the hardware capabilities, revision and SKU type. */
	WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_SKU_CAP, &sc->cap,
	    sizeof(sc->cap)));
	WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_REVISION, &sc->rev,
	    sizeof(sc->rev)));
	WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_TYPE, &sc->type,
	    sizeof(sc->type)));

	DPRINTF(sc, WPI_DEBUG_EEPROM, "cap=%x rev=%x type=%x\n", sc->cap, le16toh(sc->rev),
	    sc->type);

	/* Read the regulatory domain (4 ASCII characters.) */
	WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, sc->domain,
	    sizeof(sc->domain)));

	/* Read MAC address. */
	WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_MAC, macaddr,
	    IEEE80211_ADDR_LEN));

	/* Read the list of authorized channels. */
	for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++)
		WPI_CHK(wpi_read_eeprom_channels(sc, i));

	/* Read the list of TX power groups. */
	for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++)
		WPI_CHK(wpi_read_eeprom_group(sc, i));

fail:	wpi_apm_stop(sc);	/* Power OFF adapter. */

	DPRINTF(sc, WPI_DEBUG_TRACE, error ? TRACE_STR_END_ERR : TRACE_STR_END,
	    __func__);

	return error;
#undef WPI_CHK
}

/*
 * Translate EEPROM flags to net80211.
 */
static uint32_t
wpi_eeprom_channel_flags(struct wpi_eeprom_chan *channel)
{
	uint32_t nflags;

	nflags = 0;
	if ((channel->flags & WPI_EEPROM_CHAN_ACTIVE) == 0)
		nflags |= IEEE80211_CHAN_PASSIVE;
	if ((channel->flags & WPI_EEPROM_CHAN_IBSS) == 0)
		nflags |= IEEE80211_CHAN_NOADHOC;
	if (channel->flags & WPI_EEPROM_CHAN_RADAR) {
		nflags |= IEEE80211_CHAN_DFS;
		/* XXX apparently IBSS may still be marked */
		nflags |= IEEE80211_CHAN_NOADHOC;
	}

	return nflags;
}

static void
wpi_read_eeprom_band(struct wpi_softc *sc, int n)
{
	struct ifnet *ifp = sc->sc_ifp;
	struct ieee80211com *ic = ifp->if_l2com;
	struct wpi_eeprom_chan *channels = sc->eeprom_channels[n];
	const struct wpi_chan_band *band = &wpi_bands[n];
	struct ieee80211_channel *c;
	uint8_t chan;
	int i, nflags;

	for (i = 0; i < band->nchan; i++) {
		if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) {
			DPRINTF(sc, WPI_DEBUG_HW,
			    "Channel Not Valid: %d, band %d\n",
			     band->chan[i],n);
			continue;
		}

		chan = band->chan[i];
		nflags = wpi_eeprom_channel_flags(&channels[i]);

		c = &ic->ic_channels[ic->ic_nchans++];
		c->ic_ieee = chan;
		c->ic_maxregpower = channels[i].maxpwr;
		c->ic_maxpower = 2*c->ic_maxregpower;

		if (n == 0) {	/* 2GHz band */
			c->ic_freq = ieee80211_ieee2mhz(chan, IEEE80211_CHAN_G);
			/* G =>'s B is supported */
			c->ic_flags = IEEE80211_CHAN_B | nflags;
			c = &ic->ic_channels[ic->ic_nchans++];
			c[0] = c[-1];
			c->ic_flags = IEEE80211_CHAN_G | nflags;
		} else {	/* 5GHz band */
			c->ic_freq = ieee80211_ieee2mhz(chan, IEEE80211_CHAN_A);
			c->ic_flags = IEEE80211_CHAN_A | nflags;
		}

		/* Save maximum allowed TX power for this channel. */
		sc->maxpwr[chan] = channels[i].maxpwr;

		DPRINTF(sc, WPI_DEBUG_EEPROM,
		    "adding chan %d (%dMHz) flags=0x%x maxpwr=%d passive=%d,"
		    " offset %d\n", chan, c->ic_freq,
		    channels[i].flags, sc->maxpwr[chan],
		    (c->ic_flags & IEEE80211_CHAN_PASSIVE) != 0,
		    ic->ic_nchans);
	}
}

/**
 * Read the eeprom to find out what channels are valid for the given
 * band and update net80211 with what we find.
 */
static int
wpi_read_eeprom_channels(struct wpi_softc *sc, int n)
{
	struct ifnet *ifp = sc->sc_ifp;
	struct ieee80211com *ic = ifp->if_l2com;
	const struct wpi_chan_band *band = &wpi_bands[n];
	int error;

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__);

	error = wpi_read_prom_data(sc, band->addr, &sc->eeprom_channels[n],
	    band->nchan * sizeof (struct wpi_eeprom_chan));
	if (error != 0) {
		DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__);
		return error;
	}

	wpi_read_eeprom_band(sc, n);

	ieee80211_sort_channels(ic->ic_channels, ic->ic_nchans);

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__);

	return 0;
}

static struct wpi_eeprom_chan *
wpi_find_eeprom_channel(struct wpi_softc *sc, struct ieee80211_channel *c)
{
	int i, j;

	for (j = 0; j < WPI_CHAN_BANDS_COUNT; j++)
		for (i = 0; i < wpi_bands[j].nchan; i++)
			if (wpi_bands[j].chan[i] == c->ic_ieee)
				return &sc->eeprom_channels[j][i];

	return NULL;
}

/*
 * Enforce flags read from EEPROM.
 */
static int
wpi_setregdomain(struct ieee80211com *ic, struct ieee80211_regdomain *rd,
    int nchan, struct ieee80211_channel chans[])
{
	struct ifnet *ifp = ic->ic_ifp;
	struct wpi_softc *sc = ifp->if_softc;
	int i;

	for (i = 0; i < nchan; i++) {
		struct ieee80211_channel *c = &chans[i];
		struct wpi_eeprom_chan *channel;

		channel = wpi_find_eeprom_channel(sc, c);
		if (channel == NULL) {
			if_printf(ic->ic_ifp,
			    "%s: invalid channel %u freq %u/0x%x\n",
			    __func__, c->ic_ieee, c->ic_freq, c->ic_flags);
			return EINVAL;
		}
		c->ic_flags |= wpi_eeprom_channel_flags(channel);
	}

	return 0;
}

static int
wpi_read_eeprom_group(struct wpi_softc *sc, int n)
{
	struct wpi_power_group *group = &sc->groups[n];
	struct wpi_eeprom_group rgroup;
	int i, error;

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__);

	if ((error = wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32,
	    &rgroup, sizeof rgroup)) != 0) {
		DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__);
		return error;
	}

	/* Save TX power group information. */
	group->chan   = rgroup.chan;
	group->maxpwr = rgroup.maxpwr;
	/* Retrieve temperature at which the samples were taken. */
	group->temp   = (int16_t)le16toh(rgroup.temp);

	DPRINTF(sc, WPI_DEBUG_EEPROM,
	    "power group %d: chan=%d maxpwr=%d temp=%d\n", n, group->chan,
	    group->maxpwr, group->temp);

	for (i = 0; i < WPI_SAMPLES_COUNT; i++) {
		group->samples[i].index = rgroup.samples[i].index;
		group->samples[i].power = rgroup.samples[i].power;

		DPRINTF(sc, WPI_DEBUG_EEPROM,
		    "\tsample %d: index=%d power=%d\n", i,
		    group->samples[i].index, group->samples[i].power);
	}

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__);

	return 0;
}

static struct ieee80211_node *
wpi_node_alloc(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN])
{
	struct wpi_node *wn;

	wn = malloc(sizeof (struct wpi_node), M_80211_NODE,
	    M_NOWAIT | M_ZERO);

	if (wn == NULL)
		return NULL;

	wn->id = WPI_ID_UNDEFINED;

	return &wn->ni;
}

static void
wpi_node_free(struct ieee80211_node *ni)
{
	struct ieee80211com *ic = ni->ni_ic;
	struct wpi_softc *sc = ic->ic_ifp->if_softc;
	struct wpi_node *wn = (struct wpi_node *)ni;

	if (wn->id >= WPI_ID_IBSS_MIN && wn->id <= WPI_ID_IBSS_MAX) {
		free_unr(sc->sc_unr, wn->id);

		WPI_LOCK(sc);
		if (sc->rxon.filter & htole32(WPI_FILTER_BSS))
			wpi_del_node(sc, ni);
		WPI_UNLOCK(sc);
	}

	sc->sc_node_free(ni);
}

/**
 * Called by net80211 when ever there is a change to 80211 state machine
 */

	struct ieee80211com *ic = vap->iv_ic;
	struct ifnet *ifp = ic->ic_ifp;
	struct wpi_softc *sc = ifp->if_softc;
	int error = 0;

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__);

	DPRINTF(sc, WPI_DEBUG_STATE, "%s: %s -> %s\n", __func__,
		ieee80211_state_name[vap->iv_state],
		ieee80211_state_name[nstate]);

	IEEE80211_UNLOCK(ic);
	WPI_LOCK(sc);
	switch (nstate) {
	case IEEE80211_S_SCAN:
		if ((vap->iv_opmode == IEEE80211_M_IBSS ||
		    vap->iv_opmode == IEEE80211_M_AHDEMO) &&
		    (sc->rxon.filter & htole32(WPI_FILTER_BSS))) {
			sc->rxon.filter &= ~htole32(WPI_FILTER_BSS);
			if ((error = wpi_send_rxon(sc, 0, 1)) != 0) {
				device_printf(sc->sc_dev,
				    "%s: could not send RXON\n", __func__);
			}
		}
		break;

	case IEEE80211_S_ASSOC:
		if (vap->iv_state != IEEE80211_S_RUN)
			break;
		/* FALLTHROUGH */
	case IEEE80211_S_AUTH:
		/*
		 * The node must be registered in the firmware before auth.
		 * Also the associd must be cleared on RUN -> ASSOC
		 * transitions.
		 */
		if ((error = wpi_auth(sc, vap)) != 0) {
		if (error != 0) {
			device_printf(sc->sc_dev,
			    "%s: could not move to AUTH state, error %d\n",
			    __func__, error);
		}
		break;

	case IEEE80211_S_RUN:
		/*
		 * RUN -> RUN transition; Just restart the timers.
		 */
		if (vap->iv_state == IEEE80211_S_RUN) {
			wpi_calib_timeout(sc);
			break;
		}

		/*
		 * !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 = wpi_run(sc, vap)) != 0) {
			device_printf(sc->sc_dev,
			    "%s: could not move to RUN state\n", __func__);
			    __func__, error);
		}
		break;

	default:
		break;
	}
	if (nstate == IEEE80211_S_RUN) {
		/* RUN -> RUN transition; just restart the timers */
		wpi_calib_timeout(sc);
		/* XXX split out rate control timer */
	}
	WPI_UNLOCK(sc);
	IEEE80211_LOCK(ic);
	if (error != 0) {
		DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__);
		return error;
	}

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__);
 * Grab exclusive access to NIC memory.
 */
static void
wpi_mem_lock(struct wpi_softc *sc)
{
	int ntries;
	uint32_t tmp;

	return wvp->newstate(vap, nstate, arg);
	WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_MAC);

	/* spin until we actually get the lock */
	for (ntries = 0; ntries < 100; ntries++) {
		if ((WPI_READ(sc, WPI_GPIO_CTL) &
			(WPI_GPIO_CLOCK | WPI_GPIO_SLEEP)) == WPI_GPIO_CLOCK)
			break;
		DELAY(10);
	}
	if (ntries == 100)
		device_printf(sc->sc_dev, "could not lock memory\n");
}

/*
 * Release lock on NIC memory.
 */
static void
wpi_calib_timeout(void *arg)
{
	struct wpi_softc *sc = arg;
	struct ifnet *ifp = sc->sc_ifp;
	struct ieee80211com *ic = ifp->if_l2com;
	struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);

	if (vap->iv_state != IEEE80211_S_RUN)
		return;
{
	WPI_WRITE(sc, WPI_READ_MEM_ADDR, WPI_MEM_4 | addr);
	return WPI_READ(sc, WPI_READ_MEM_DATA);
}

	wpi_power_calibration(sc);
wpi_mem_write(struct wpi_softc *sc, uint16_t addr, uint32_t data)
{
	WPI_WRITE(sc, WPI_WRITE_MEM_ADDR, WPI_MEM_4 | addr);
	WPI_WRITE(sc, WPI_WRITE_MEM_DATA, data);
}

	callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc);
wpi_mem_write_region_4(struct wpi_softc *sc, uint16_t addr,
    const uint32_t *data, int wlen)
{
	for (; wlen > 0; wlen--, data++, addr+=4)
		wpi_mem_write(sc, addr, *data);
}

static __inline uint8_t
rate2plcp(const uint8_t rate)
 * using the traditional bit-bang method. Data is read up until len bytes have
 * been obtained.
 */
static uint16_t
wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int len)
{
	switch (rate) {
	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;
	default:	return 0;

		if (ntries == 10) {
			device_printf(sc->sc_dev, "could not read EEPROM\n");
			return ETIMEDOUT;
		}

		*out++= val >> 16;
		if (len > 1)
			*out ++= val >> 24;
	}

	wpi_mem_unlock(sc);

	return 0;
}

static __inline uint8_t
plcp2rate(const uint8_t plcp)
 * The driver just copies the firmware into DMA-safe memory and tells the NIC
 * where to find it.  Once the NIC has copied the firmware into its internal
 * memory, we can free our local copy in the driver.
 */
static int
wpi_load_microcode(struct wpi_softc *sc, const uint8_t *fw, int size)
{
	switch (plcp) {
	case 0xd:	return 12;
	case 0xf:	return 18;
	case 0x5:	return 24;
	case 0x7:	return 36;
	case 0x9:	return 48;
	case 0xb:	return 72;
	case 0x1:	return 96;
	case 0x3:	return 108;
	case 10:	return 2;
	case 20:	return 4;
	case 55:	return 11;
	case 110:	return 22;
	default:	return 0;

	/* run microcode */
	wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_RUN);

	/* wait while the adapter is busy copying the firmware */
	for (error = 0, ntries = 0; ntries < 1000; ntries++) {
		uint32_t status = WPI_READ(sc, WPI_TX_STATUS);
		DPRINTFN(WPI_DEBUG_HW,
		    ("firmware status=0x%x, val=0x%x, result=0x%x\n", status,
		     WPI_TX_IDLE(6), status & WPI_TX_IDLE(6)));
		if (status & WPI_TX_IDLE(6)) {
			DPRINTFN(WPI_DEBUG_HW,
			    ("Status Match! - ntries = %d\n", ntries));
			break;
		}
		DELAY(10);
	}
}
		device_printf(sc->sc_dev, "timeout transferring firmware\n");
		error = ETIMEDOUT;
	}

/* Quickly determine if a given rate is CCK or OFDM. */
#define WPI_RATE_IS_OFDM(rate)	((rate) >= 12 && (rate) != 22)

	wpi_mem_unlock(sc);

	return (error);
}

static void
wpi_rx_done(struct wpi_softc *sc, struct wpi_rx_desc *desc,
    struct wpi_rx_data *data)
{
	struct ifnet *ifp = sc->sc_ifp;
	const struct ieee80211_cipher *cip = NULL;
	struct ieee80211com *ic = ifp->if_l2com;
	struct wpi_rx_ring *ring = &sc->rxq;
	struct wpi_rx_stat *stat;
	struct wpi_rx_head *head;
	struct wpi_rx_tail *tail;
	struct ieee80211_frame *wh;
	struct ieee80211_node *ni;
	struct mbuf *m, *m1;
	bus_addr_t paddr;
	uint32_t flags;
	uint16_t len;
	int error;

	stat = (struct wpi_rx_stat *)(desc + 1);

	if (stat->len > WPI_STAT_MAXLEN) {
		device_printf(sc->sc_dev, "invalid RX statistic header\n");
		if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
		return;
	}


	bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTREAD);
	head = (struct wpi_rx_head *)((caddr_t)(stat + 1) + stat->len);
	len = le16toh(head->len);
	tail = (struct wpi_rx_tail *)((caddr_t)(head + 1) + len);
	flags = le32toh(tail->flags);

	DPRINTF(sc, WPI_DEBUG_RECV, "%s: idx %d len %d stat len %u rssi %d"
	    " rate %x chan %d tstamp %ju\n", __func__, ring->cur,
	    le32toh(desc->len), len, (int8_t)stat->rssi,
	    head->plcp, head->chan, (uintmax_t)le64toh(tail->tstamp));

	/* Discard frames with a bad FCS early. */
	if ((flags & WPI_RX_NOERROR) != WPI_RX_NOERROR) {
		DPRINTF(sc, WPI_DEBUG_RECV, "%s: RX flags error %x\n",
		    __func__, flags);
		if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
		return;
	}
	/* Discard frames that are too short. */
	if (len < sizeof (*wh)) {
		DPRINTF(sc, WPI_DEBUG_RECV, "%s: frame too short: %d\n",
		    __func__, len);
		if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
		return;
	}

	m1 = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE);
	if (m1 == NULL) {
		DPRINTF(sc, WPI_DEBUG_ANY, "%s: no mbuf to restock ring\n",
		    __func__);
		    __func__));
		if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
		return;
	}
	bus_dmamap_unload(ring->data_dmat, data->map);

	error = bus_dmamap_load(ring->data_dmat, data->map, mtod(m1, void *),
	    MJUMPAGESIZE, wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT);
	    wpi_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 *), MJUMPAGESIZE, wpi_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);
		bus_dmamap_sync(ring->data_dmat, ring->desc_dma.map,
		    BUS_DMASYNC_PREWRITE);
		if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
		return;
	}
	bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE);

	/* finalize mbuf and swap in new one */
	m = data->m;
	data->m = m1;
	/* Update RX descriptor. */
	ring->desc[ring->cur] = htole32(paddr);
	bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
	    BUS_DMASYNC_PREWRITE);

	/* Finalize mbuf. */
	m->m_pkthdr.rcvif = ifp;
	m->m_data = (caddr_t)(head + 1);
	m->m_pkthdr.len = m->m_len = len;

	/* Grab a reference to the source node. */
	wh = mtod(m, struct ieee80211_frame *);
	ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh);

	if (ni != NULL)
		cip = ni->ni_ucastkey.wk_cipher;
	if ((wh->i_fc[1] & IEEE80211_FC1_PROTECTED) &&
	    !IEEE80211_IS_MULTICAST(wh->i_addr1) &&
	    cip != NULL && cip->ic_cipher == IEEE80211_CIPHER_AES_CCM) {
		if ((flags & WPI_RX_CIPHER_MASK) != WPI_RX_CIPHER_CCMP) {
			if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
			m_freem(m);
			return;
		}
		/* Check whether decryption was successful or not. */
		if ((flags & WPI_RX_DECRYPT_MASK) != WPI_RX_DECRYPT_OK) {
			DPRINTF(sc, WPI_DEBUG_RECV,
			    "CCMP decryption failed 0x%x\n", flags);
			if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
			m_freem(m);
			return;
		}
		m->m_flags |= M_WEP;
	}

	if (ieee80211_radiotap_active(ic)) {
		struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap;

		tap->wr_flags = 0;
		if (head->flags & htole16(WPI_STAT_FLAG_SHPREAMBLE))
			tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
		tap->wr_chan_flags =
			htole16(ic->ic_channels[head->chan].ic_flags);
		tap->wr_dbm_antsignal = (int8_t)(stat->rssi - WPI_RSSI_OFFSET);
		tap->wr_dbm_antnoise = (int8_t)le16toh(stat->noise);
		tap->wr_tsft = tail->tstamp;
		tap->wr_antenna = (le16toh(head->flags) >> 4) & 0xf;
		tap->wr_rate = plcp2rate(head->plcp);
		/* 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 (le16toh(head->flags) & 0x4)
			tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
	}

	WPI_UNLOCK(sc);

	/* Send the frame to the 802.11 layer. */
	if (ni != NULL) {
		(void)ieee80211_input(ni, m, stat->rssi, -WPI_RSSI_OFFSET);
		/* Node is no longer needed. */
		ieee80211_free_node(ni);
	} else
		(void)ieee80211_input_all(ic, m, stat->rssi, -WPI_RSSI_OFFSET);

	WPI_LOCK(sc);
}

static void
wpi_rx_statistics(struct wpi_softc *sc, struct wpi_rx_desc *desc,
    struct wpi_rx_data *data)
{
	/* Ignore */
}

static void
wpi_tx_done(struct wpi_softc *sc, struct wpi_rx_desc *desc)
{
	struct ifnet *ifp = sc->sc_ifp;
	struct wpi_tx_ring *ring = &sc->txq[desc->qid & 0x3];
	struct wpi_tx_data *data = &ring->data[desc->idx];
	struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1);
	struct mbuf *m;
	struct ieee80211_node *ni;
	struct ieee80211vap *vap;
	int status = le32toh(stat->status);

	KASSERT(data->ni != NULL, ("no node"));
	    "rate=%x duration=%d status=%x\n", desc->qid, desc->idx,
	    stat->ntries, stat->nkill, stat->rate, le32toh(stat->duration),
	    le32toh(stat->status)));

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__);

	DPRINTF(sc, WPI_DEBUG_XMIT, "%s: "
	    "qid %d idx %d retries %d btkillcnt %d rate %x duration %d "
	    "status %x\n", __func__, desc->qid, desc->idx, stat->ackfailcnt,
	    stat->btkillcnt, stat->rate, le32toh(stat->duration), status);

	/* 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.
	 * XXX we should not count mgmt frames since they're always sent at
	 * the lowest available bit-rate.
	 * XXX frames w/o ACK shouldn't be used either
	 */
	WPI_UNLOCK(sc);
	if ((status & 0xff) != 1) {
		retrycnt = 1;
	}
	ieee80211_ratectl_tx_complete(vap, ni, IEEE80211_RATECTL_TX_SUCCESS,
	    &retrycnt, NULL);

	/* XXX oerrors should only count errors !maxtries */
	if ((le32toh(stat->status) & 0xff) != 1)
		if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
		ieee80211_ratectl_tx_complete(vap, ni,
		    IEEE80211_RATECTL_TX_FAILURE, &stat->ackfailcnt, NULL);
	} else {
		if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1);
		ieee80211_ratectl_tx_complete(vap, ni,
		    IEEE80211_RATECTL_TX_SUCCESS, &stat->ackfailcnt, NULL);
	}

	ieee80211_tx_complete(ni, m, (status & 0xff) != 1);
	WPI_LOCK(sc);
	/* XXX handle M_TXCB? */
	m_freem(txdata->m);
	txdata->m = NULL;
	ieee80211_free_node(txdata->ni);
	txdata->ni = NULL;

	sc->sc_tx_timer = 0;
	if (--ring->queued < WPI_TX_RING_LOMARK) {
		sc->qfullmsk &= ~(1 << ring->qid);
		if (sc->qfullmsk == 0 &&
		    (ifp->if_drv_flags & IFF_DRV_OACTIVE)) {
			ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
			wpi_start_locked(ifp);
		}
	}

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__);
	ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
	wpi_start_locked(ifp);
}

/*
 * Process a "command done" firmware notification.  This is where we wakeup
 * processes waiting for a synchronous command completion.
 */
static void
wpi_cmd_done(struct wpi_softc *sc, struct wpi_rx_desc *desc)
{
	struct wpi_tx_ring *ring = &sc->txq[4];
	struct wpi_tx_data *data;

	DPRINTF(sc, WPI_DEBUG_CMD, "cmd notification qid=%x idx=%d flags=%x "
				   "type=%s len=%d\n", desc->qid, desc->idx,
				   desc->flags, wpi_cmd_str(desc->type),
				   le32toh(desc->len));

	if ((desc->qid & 7) != 4)
		return;	/* Not a command ack. */

	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;

{
	struct ifnet *ifp = sc->sc_ifp;
	struct ieee80211com *ic = ifp->if_l2com;
	struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
	int hw;
	uint32_t hw;

	bus_dmamap_sync(sc->shared_dma.tag, sc->shared_dma.map,
	    BUS_DMASYNC_POSTREAD);

	hw = le32toh(sc->shared->next);
	hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1;
		data = &sc->rxq.data[sc->rxq.cur];

	if (sc->rxq.cur == hw)
		return;

	do {
		sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT;

		struct wpi_rx_data *data = &sc->rxq.data[sc->rxq.cur];
		struct wpi_rx_desc *desc;

		bus_dmamap_sync(sc->rxq.data_dmat, data->map,
		    BUS_DMASYNC_POSTREAD);
		desc = mtod(data->m, struct wpi_rx_desc *);

		DPRINTF(sc, WPI_DEBUG_NOTIFY,
		    "%s: cur=%d; qid %x idx %d flags %x type %d(%s) len %d\n",
		    __func__, sc->rxq.cur, desc->qid, desc->idx, desc->flags,
		    desc->type, wpi_cmd_str(desc->type), le32toh(desc->len));
			  desc->flags,
			  desc->type,
			  le32toh(desc->len)));

		if (!(desc->qid & 0x80))	/* Reply to a command. */
			wpi_cmd_done(sc, desc);

		switch (desc->type) {
		case WPI_RX_DONE:
			/* An 802.11 frame has been received. */
			wpi_rx_done(sc, desc, data);
			break;

		case WPI_TX_DONE:
			/* An 802.11 frame has been transmitted. */
			wpi_tx_done(sc, desc);
			break;

		case WPI_RX_STATISTICS:
		case WPI_BEACON_STATISTICS:
			wpi_rx_statistics(sc, desc, data);
			break;

		case WPI_BEACON_MISSED:
		{
			struct wpi_beacon_missed *miss =
			    (struct wpi_beacon_missed *)(desc + 1);
			int misses;

			bus_dmamap_sync(sc->rxq.data_dmat, data->map,
			    BUS_DMASYNC_POSTREAD);
			misses = le32toh(miss->consecutive);

			DPRINTF(sc, WPI_DEBUG_STATE,
			    "%s: beacons missed %d/%d\n", __func__, misses,
			    le32toh(miss->total));

			if (vap->iv_state == IEEE80211_S_RUN &&
			    (ic->ic_flags & IEEE80211_S_SCAN) == 0) {
				if (misses >=  vap->iv_bmissthreshold) {
					WPI_UNLOCK(sc);
					ieee80211_beacon_miss(ic);
					WPI_LOCK(sc);
				}
			}
			break;
		}
		case WPI_UC_READY:
		{
			struct wpi_ucode_info *uc =
			    (struct wpi_ucode_info *)(desc + 1);

			/* The microcontroller is ready. */
			bus_dmamap_sync(sc->rxq.data_dmat, data->map,
			    BUS_DMASYNC_POSTREAD);
			DPRINTF(sc, WPI_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\n");
				wpi_stop_locked(sc);
			}
			/* Save the address of the error log in SRAM. */
			sc->errptr = le32toh(uc->errptr);
			break;
		}
		case WPI_STATE_CHANGED:
		{
                        bus_dmamap_sync(sc->rxq.data_dmat, data->map,
                            BUS_DMASYNC_POSTREAD);

			uint32_t *status = (uint32_t *)(desc + 1);
#ifdef WPI_DEBUG
			DPRINTF(sc, WPI_DEBUG_STATE, "state changed to %x\n",
			    le32toh(*status));
#endif
			if (le32toh(*status) & 1) {
				ieee80211_runtask(ic, &sc->sc_radiooff_task);
				return;
				sc->flags |= WPI_FLAG_HW_RADIO_OFF;
				ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
				/* Disable firmware commands */
				WPI_WRITE(sc, WPI_UCODE_SET, WPI_DISABLE_CMD);
			}
			break;
		}
		case WPI_START_SCAN:
		{
			bus_dmamap_sync(sc->rxq.data_dmat, data->map,
			    BUS_DMASYNC_POSTREAD);
#ifdef WPI_DEBUG
			struct wpi_start_scan *scan =
			    (struct wpi_start_scan *)(desc + 1);
			DPRINTF(sc, WPI_DEBUG_SCAN,
			    "%s: scanning channel %d status %x\n",
			    __func__, scan->chan, le32toh(scan->status));
#endif

			DPRINTFN(WPI_DEBUG_SCANNING,
				 ("scanning channel %d status %x\n",
			    scan->chan, le32toh(scan->status)));
			break;
		}
		case WPI_STOP_SCAN:
		{
			bus_dmamap_sync(sc->rxq.data_dmat, data->map,
			    BUS_DMASYNC_POSTREAD);
#ifdef WPI_DEBUG
			struct wpi_stop_scan *scan =
			    (struct wpi_stop_scan *)(desc + 1);
			DPRINTF(sc, WPI_DEBUG_SCAN,
			    "scan finished nchan=%d status=%d chan=%d\n",
			    scan->nchan, scan->status, scan->chan);
#endif
			struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);

			DPRINTFN(WPI_DEBUG_SCANNING,
			    ("scan finished nchan=%d status=%d chan=%d\n",
			     scan->nchan, scan->status, scan->chan));

			sc->sc_scan_timer = 0;
			WPI_UNLOCK(sc);
			ieee80211_scan_next(vap);
			WPI_LOCK(sc);
			break;
		}
		}
	} while (sc->rxq.cur != hw);
			struct wpi_missed_beacon *beacon =
				(struct wpi_missed_beacon *)(desc + 1);
			struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);

	/* Tell the firmware what we have processed. */
	wpi_update_rx_ring(sc);
}

/*
 * Process an INT_WAKEUP interrupt raised when the microcontroller wakes up
 * from power-down sleep mode.
 */
static void     
wpi_wakeup_intr(struct wpi_softc *sc)
{
	int qid;

	DPRINTF(sc, WPI_DEBUG_PWRSAVE,
	    "%s: ucode wakeup from power-down sleep\n", __func__);

	/* Wakeup RX and TX rings. */
	if (sc->rxq.update) {
		wpi_update_rx_ring(sc);
		sc->rxq.update = 0;
	}
	for (qid = 0; qid < WPI_NTXQUEUES; qid++) {
		struct wpi_tx_ring *ring = &sc->txq[qid];

		if (ring->update) {
			wpi_update_tx_ring(sc, ring);
			ring->update = 0;
		}
	}

	WPI_CLRBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ);
}

/*
 * 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
wpi_fatal_intr(struct wpi_softc *sc)
{
	struct wpi_fw_dump dump;
	uint32_t i, offset, count;
	const uint32_t size_errmsg =
	    (sizeof (wpi_fw_errmsg) / sizeof ((wpi_fw_errmsg)[0]));

	/* Check that the error log address is valid. */
	if (sc->errptr < WPI_FW_DATA_BASE ||
	    sc->errptr + sizeof (dump) >
	    WPI_FW_DATA_BASE + WPI_FW_DATA_MAXSZ) {
		printf("%s: bad firmware error log address 0x%08x\n", __func__,
		    sc->errptr);
                return;
        }
	if (wpi_nic_lock(sc) != 0) {
		printf("%s: could not read firmware error log\n", __func__);
                return;
        }
	/* Read number of entries in the log. */
	count = wpi_mem_read(sc, sc->errptr);
	if (count == 0 || count * sizeof (dump) > WPI_FW_DATA_MAXSZ) {
		printf("%s: invalid count field (count = %u)\n", __func__,
		    count);
		wpi_nic_unlock(sc);
		return;
	}
	/* Skip "count" field. */
	offset = sc->errptr + sizeof (uint32_t);
	printf("firmware error log (count = %u):\n", count);
	for (i = 0; i < count; i++) {
		wpi_mem_read_region_4(sc, offset, (uint32_t *)&dump,
		    sizeof (dump) / sizeof (uint32_t));

		printf("  error type = \"%s\" (0x%08X)\n",
		    (dump.desc < size_errmsg) ?
		        wpi_fw_errmsg[dump.desc] : "UNKNOWN",
		    dump.desc);
		printf("  error data      = 0x%08X\n",
		    dump.data);
		printf("  branch link     = 0x%08X%08X\n",
		    dump.blink[0], dump.blink[1]);
		printf("  interrupt link  = 0x%08X%08X\n",
		    dump.ilink[0], dump.ilink[1]);
		printf("  time            = %u\n", dump.time);

		offset += sizeof (dump);
	}
	wpi_nic_unlock(sc);
	/* Dump driver status (TX and RX rings) while we're here. */
	printf("driver status:\n");
	for (i = 0; i < WPI_NTXQUEUES; i++) {
		struct wpi_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

wpi_intr(void *arg)
{
	struct wpi_softc *sc = arg;
	struct ifnet *ifp = sc->sc_ifp;
	uint32_t r1, r2;

	WPI_LOCK(sc);

	/* Disable interrupts. */
	WPI_WRITE(sc, WPI_INT_MASK, 0);

	r1 = WPI_READ(sc, WPI_INT);

	if (r1 == 0xffffffff || (r1 & 0xfffffff0) == 0xa5a5a5a0) {
		WPI_UNLOCK(sc);
		return;	/* Hardware gone! */
	}

	r2 = WPI_READ(sc, WPI_FH_INT);
	WPI_WRITE(sc, WPI_MASK, 0);
	/* ack interrupts */
	WPI_WRITE(sc, WPI_INTR, r);

	DPRINTF(sc, WPI_DEBUG_INTR, "%s: reg1=0x%08x reg2=0x%08x\n", __func__,
	    r1, r2);

	if (r1 == 0 && r2 == 0)
		goto done;	/* Interrupt not for us. */

	/* Acknowledge interrupts. */
	WPI_WRITE(sc, WPI_INT, r1);
	WPI_WRITE(sc, WPI_FH_INT, r2);

	if (r1 & (WPI_INT_SW_ERR | WPI_INT_HW_ERR)) {
		struct ieee80211com *ic = ifp->if_l2com;
		struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);

		device_printf(sc->sc_dev, "fatal firmware error\n");
		wpi_fatal_intr(sc);
		DPRINTF(sc, WPI_DEBUG_HW,
		    "(%s)\n", (r1 & WPI_INT_SW_ERR) ? "(Software Error)" :
		    "(Hardware Error)");
		ieee80211_runtask(ic, &sc->sc_reinittask);
		sc->flags &= ~WPI_FLAG_BUSY;
		WPI_UNLOCK(sc);
		return;
	}

	if ((r1 & (WPI_INT_FH_RX | WPI_INT_SW_RX)) ||
	    (r2 & WPI_FH_INT_RX))
		wpi_notif_intr(sc);

	if (r1 & WPI_INT_ALIVE)
		wakeup(sc);	/* Firmware is alive. */

	if (r1 & WPI_INT_WAKEUP)
		wpi_wakeup_intr(sc);
		WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK);

done:
	/* Re-enable interrupts. */
	if (ifp->if_flags & IFF_UP)
		WPI_WRITE(sc, WPI_INT_MASK, WPI_INT_MASK_DEF);

	WPI_UNLOCK(sc);
}

static int
wpi_cmd2(struct wpi_softc *sc, struct wpi_buf *buf)
{
	struct ieee80211_frame *wh;
	struct wpi_tx_cmd *cmd;
	struct wpi_tx_data *data;
	struct wpi_tx_desc *desc;
	struct wpi_tx_ring *ring;
	struct mbuf *m1;
	bus_dma_segment_t *seg, segs[WPI_MAX_SCATTER];
	u_int hdrlen;
	int error, i, nsegs, pad, totlen;

	WPI_LOCK_ASSERT(sc);
	/* R1-R4 (ral/ural is R4-R1) */
	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;

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__);

	wh = mtod(buf->m, struct ieee80211_frame *);
	hdrlen = ieee80211_anyhdrsize(wh);
	totlen = buf->m->m_pkthdr.len;

	if (hdrlen & 3) {
		/* First segment length must be a multiple of 4. */
		pad = 4 - (hdrlen & 3);
	} else
		pad = 0;

	ring = &sc->txq[buf->ac];
	desc = &ring->desc[ring->cur];
	data = &ring->data[ring->cur];

	/* Prepare TX firmware command. */
	cmd = &ring->cmd[ring->cur];
	cmd->code = buf->code;
	cmd->flags = 0;
	cmd->qid = ring->qid;
	cmd->idx = ring->cur;

	memcpy(cmd->data, buf->data, buf->size);

	/* Save and trim IEEE802.11 header. */
	memcpy((uint8_t *)(cmd->data + buf->size), wh, hdrlen);
	m_adj(buf->m, hdrlen);

	error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, buf->m,
	    segs, &nsegs, BUS_DMA_NOWAIT);
	if (error != 0 && error != EFBIG) {
		device_printf(sc->sc_dev,
		    "%s: can't map mbuf (error %d)\n", __func__, error);
		m_freem(buf->m);
		return error;
	}
	if (error != 0) {
		/* Too many DMA segments, linearize mbuf. */
		m1 = m_collapse(buf->m, M_NOWAIT, WPI_MAX_SCATTER);
		if (m1 == NULL) {
			device_printf(sc->sc_dev,
			    "%s: could not defrag mbuf\n", __func__);
			m_freem(buf->m);
			return ENOBUFS;
		}
		buf->m = m1;

		error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map,
		    buf->m, segs, &nsegs, BUS_DMA_NOWAIT);
		if (error != 0) {
			device_printf(sc->sc_dev,
			    "%s: can't map mbuf (error %d)\n", __func__, error);
			m_freem(buf->m);
			return error;
		}
	}

	data->m = buf->m;
	data->ni = buf->ni;

	DPRINTF(sc, WPI_DEBUG_XMIT, "%s: qid %d idx %d len %d nsegs %d\n",
	    __func__, ring->qid, ring->cur, totlen, nsegs);

	/* Fill TX descriptor. */
	desc->nsegs = WPI_PAD32(totlen + pad) << 4 | (1 + nsegs);
	/* First DMA segment is used by the TX command. */
	desc->segs[0].addr = htole32(data->cmd_paddr);
	desc->segs[0].len  = htole32(4 + buf->size + hdrlen + pad);
	/* Other DMA segments are for data payload. */
	seg = &segs[0];
	for (i = 1; i <= nsegs; i++) {
		desc->segs[i].addr = htole32(seg->ds_addr);
		desc->segs[i].len  = htole32(seg->ds_len);
		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);

	/* Kick TX ring. */
	ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT;
	wpi_update_tx_ring(sc, ring);

	/* Mark TX ring as full if we reach a certain threshold. */
	if (++ring->queued > WPI_TX_RING_HIMARK)
		sc->qfullmsk |= 1 << ring->qid;

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__);

	return 0;
}

/* quickly determine if a given rate is CCK or OFDM */
#define WPI_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22)

/*
 * Construct the data packet for a transmit buffer.
 * the buffer onto the transmit ring, kicking the card to process the
 * the buffer.
 */
static int
wpi_tx_data(struct wpi_softc *sc, struct mbuf *m, struct ieee80211_node *ni)
	int ac)
{
	const struct ieee80211_txparam *tp;
	struct ieee80211vap *vap = ni->ni_vap;
	struct ieee80211com *ic = ni->ni_ic;
	struct wpi_node *wn = (void *)ni;
	struct ieee80211_channel *chan;
	struct wpi_tx_ring *ring = &sc->txq[ac];
	struct wpi_tx_desc *desc;
	struct wpi_tx_data *data;
	struct wpi_tx_cmd *cmd;
	struct wpi_cmd_data *tx;
	struct ieee80211_frame *wh;
	struct ieee80211_key *k = NULL;
	struct wpi_cmd_data tx;
	struct wpi_buf tx_data;
	uint32_t flags;
	uint16_t qos;
	uint8_t tid, type;
	int ac, error, rate, ismcast, totlen;

	wh = mtod(m, struct ieee80211_frame *);
	type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
	ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1);

	/* 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);

	chan = (ni->ni_chan != IEEE80211_CHAN_ANYC) ?
		ni->ni_chan : ic->ic_curchan;
	tp = &vap->iv_txparms[ieee80211_chan2mode(chan)];

	/* Choose a TX rate index. */
	if (type == IEEE80211_FC0_TYPE_MGT)
		rate = tp->mgmtrate;
	else if (ismcast)
		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) {
			error = ENOBUFS;
			goto fail;
		}
		/* 802.11 header may have moved. */
		wh = mtod(m, struct ieee80211_frame *);
	}
	totlen = m->m_pkthdr.len;

	if (ieee80211_radiotap_active_vap(vap)) {
		struct wpi_tx_radiotap_header *tap = &sc->sc_txtap;
	cmd->flags = 0;
	cmd->qid = ring->qid;
	cmd->idx = ring->cur;

		tap->wt_flags = 0;
		tap->wt_rate = rate;
		if (k != NULL)
			tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP;
	tx->cck_mask = 0x0f;
	tx->lifetime = htole32(WPI_LIFETIME_INFINITE);
	tx->id = ismcast ? WPI_ID_BROADCAST : WPI_ID_BSS;
	tx->len = htole16(m0->m_pkthdr.len);

		ieee80211_radiotap_tx(vap, m);
	}

	flags = 0;
	if (!ismcast) {
		/* Unicast frame, check if an ACK is expected. */
		if (!qos || (qos & IEEE80211_QOS_ACKPOLICY) !=
		    IEEE80211_QOS_ACKPOLICY_NOACK)
			flags |= WPI_TX_NEED_ACK;
	}

	/* Check if frame must be protected using RTS/CTS or CTS-to-self. */
	if (!ismcast) {
		/* NB: Group frames are sent using CCK in 802.11b/g. */
		if (totlen + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) {
			flags |= WPI_TX_NEED_RTS;
		} else if ((ic->ic_flags & IEEE80211_F_USEPROT) &&
		    WPI_RATE_IS_OFDM(rate)) {
			if (ic->ic_protmode == IEEE80211_PROT_CTSONLY)
				flags |= WPI_TX_NEED_CTS;
			else if (ic->ic_protmode == IEEE80211_PROT_RTSCTS)
				flags |= WPI_TX_NEED_RTS;
		}

		if (flags & (WPI_TX_NEED_RTS | WPI_TX_NEED_CTS))
			flags |= WPI_TX_FULL_TXOP;
	}

	memset(&tx, 0, sizeof (struct wpi_cmd_data));
	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 |= WPI_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);
		rate = tp->mgmtrate;
	} else if (ismcast) {
		rate = tp->mcastrate;
	} else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) {
		rate = tp->ucastrate;
	} else {
		(void) ieee80211_ratectl_rate(ni, NULL, 0);
		rate = ni->ni_txrate;
	}
	tx->rate = wpi_plcp_signal(rate);

	if (ismcast || type != IEEE80211_FC0_TYPE_DATA)
		tx.id = WPI_ID_BROADCAST;
	else {
		if (wn->id == WPI_ID_UNDEFINED &&
		    (vap->iv_opmode == IEEE80211_M_IBSS ||
		    vap->iv_opmode == IEEE80211_M_AHDEMO)) {
			error = wpi_add_ibss_node(sc, ni);
			if (error != 0) {
				device_printf(sc->sc_dev,
				    "%s: could not add IBSS node, error %d\n",
				    __func__, error);
				goto fail;
			}
		}

		if (wn->id == WPI_ID_UNDEFINED) {
			device_printf(sc->sc_dev,
			    "%s: undefined node id\n", __func__);
			error = EINVAL;
			goto fail;
		}

		tx.id = wn->id;
	}

	if (type != IEEE80211_FC0_TYPE_MGT)
		tx.data_ntries = tp->maxretry;

	tx.len = htole16(totlen);
	tx.flags = htole32(flags);
	tx.plcp = rate2plcp(rate);
	tx.tid = tid;
	tx.lifetime = htole32(WPI_LIFETIME_INFINITE);
	tx.ofdm_mask = 0xff;
	tx.cck_mask = 0x0f;
	tx.rts_ntries = 7;

	if (k != NULL && k->wk_cipher->ic_cipher == IEEE80211_CIPHER_AES_CCM) {
		if (!(k->wk_flags & IEEE80211_KEY_SWCRYPT)) {
			tx.security = WPI_CIPHER_CCMP;
			memcpy(tx.key, k->wk_key, k->wk_keylen);
		}
	}

	tx_data.data = &tx;
	tx_data.ni = ni;
	tx_data.m = m;
	tx_data.size = sizeof(tx);
	tx_data.code = WPI_CMD_TX_DATA;
	tx_data.ac = ac;

	return wpi_cmd2(sc, &tx_data);

fail:	m_freem(m);
	return error;
}

static int
wpi_tx_data_raw(struct wpi_softc *sc, struct mbuf *m, struct ieee80211_node *ni,
    const struct ieee80211_bpf_params *params)
{
	struct ieee80211vap *vap = ni->ni_vap;
	struct ieee80211_frame *wh;
	struct wpi_cmd_data tx;
	struct wpi_buf tx_data;
	uint32_t flags;
	uint8_t type;
	int ac, rate, totlen;

	wh = mtod(m, struct ieee80211_frame *);
	type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
	totlen = m->m_pkthdr.len;

	ac = params->ibp_pri & 3;

	/* Choose a TX rate index. */
	rate = params->ibp_rate0;

	flags = 0;
	if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0)
		flags |= WPI_TX_NEED_ACK;
	if (params->ibp_flags & IEEE80211_BPF_RTS)
		flags |= WPI_TX_NEED_RTS;
	if (params->ibp_flags & IEEE80211_BPF_CTS)
		flags |= WPI_TX_NEED_CTS;
	if (flags & (WPI_TX_NEED_RTS | WPI_TX_NEED_CTS))
		flags |= WPI_TX_FULL_TXOP;

	if (ieee80211_radiotap_active_vap(vap)) {
		struct wpi_tx_radiotap_header *tap = &sc->sc_txtap;

		tap->wt_flags = 0;
		tap->wt_rate = rate;
		tap->wt_hwqueue = ac;
		if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED)
			tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP;

		ieee80211_radiotap_tx(vap, m);
	}

	memset(&tx, 0, sizeof (struct wpi_cmd_data));
	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 |= WPI_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);
	}
	if (error != 0) {
		/* XXX use m_collapse */
		mnew = m_defrag(m0, M_NOWAIT);
		if (mnew == NULL) {
			device_printf(sc->sc_dev,
			    "could not defragment mbuf\n");
			m_freem(m0);
			return ENOBUFS;
		}
		m0 = mnew;

	tx.len = htole16(totlen);
	tx.flags = htole32(flags);
	tx.plcp = rate2plcp(rate);
	tx.id = WPI_ID_BROADCAST;
	tx.lifetime = htole32(WPI_LIFETIME_INFINITE);
	tx.rts_ntries = params->ibp_try1;
	tx.data_ntries = params->ibp_try0;

	tx_data.data = &tx;
	tx_data.ni = ni;
	tx_data.m = m;
	tx_data.size = sizeof(tx);
	tx_data.code = WPI_CMD_TX_DATA;
	tx_data.ac = ac;

	return wpi_cmd2(sc, &tx_data);
}

static int
wpi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
    const struct ieee80211_bpf_params *params)
{
	struct ieee80211com *ic = ni->ni_ic;
	struct ifnet *ifp = ic->ic_ifp;
	struct wpi_softc *sc = ifp->if_softc;
	int error = 0;

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__);

	if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
		ieee80211_free_node(ni);
		m_freem(m);
		return ENETDOWN;
	}

	WPI_LOCK(sc);
	if (params == NULL) {
		/*
		 * Legacy path; interpret frame contents to decide
		 * precisely how to send the frame.
		 */
		error = wpi_tx_data(sc, m, ni);
	} else {
		/*
		 * Caller supplied explicit parameters to use in
		 * sending the frame.
		 */
		error = wpi_tx_data_raw(sc, m, ni, params);
	}
	WPI_UNLOCK(sc);

	if (error != 0) {
		/* NB: m is reclaimed on tx failure */
		ieee80211_free_node(ni);
		if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);

		DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__);

		return error;
	desc->segs[0].addr = htole32(ring->cmd_dma.paddr +
	    ring->cur * sizeof (struct wpi_tx_cmd));
	desc->segs[0].len  = htole32(4 + sizeof (struct wpi_cmd_data));
	for (i = 1; i <= nsegs; i++) {
		desc->segs[i].addr = htole32(segs[i - 1].ds_addr);
		desc->segs[i].len  = htole32(segs[i - 1].ds_len);
	}

	sc->sc_tx_timer = 5;
	bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
	    BUS_DMASYNC_PREWRITE);

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__);

	/* kick ring */
	ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT;
	WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur);

	return 0;
}


	struct wpi_softc *sc = ifp->if_softc;
	struct ieee80211_node *ni;
	struct mbuf *m;
	int ac;

	WPI_LOCK_ASSERT(sc);

	DPRINTF(sc, WPI_DEBUG_XMIT, "%s: called\n", __func__);

	if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 ||
	    (ifp->if_drv_flags & IFF_DRV_OACTIVE))
		return;

	for (;;) {
		if (sc->qfullmsk != 0) {
			ifp->if_drv_flags |= IFF_DRV_OACTIVE;
			break;
		}
		IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
		if (m == NULL)
			break;
		ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
		if (wpi_tx_data(sc, m, ni) != 0) {
			WPI_UNLOCK(sc);
			IFQ_DRV_PREPEND(&ifp->if_snd, m);
			ifp->if_drv_flags |= IFF_DRV_OACTIVE;
			break;
		}
		ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
		if (wpi_tx_data(sc, m, ni, ac) != 0) {
			ieee80211_free_node(ni);
			WPI_LOCK(sc);
			if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
		} else
			sc->sc_tx_timer = 5;
		sc->sc_tx_timer = 5;
	}

	DPRINTF(sc, WPI_DEBUG_XMIT, "%s: done\n", __func__);
}

static void
wpi_watchdog_rfkill(void *arg)
	const struct ieee80211_bpf_params *params)
{
	struct wpi_softc *sc = arg;
	struct ifnet *ifp = sc->sc_ifp;
	struct ieee80211com *ic = ifp->if_l2com;

	DPRINTF(sc, WPI_DEBUG_WATCHDOG, "RFkill Watchdog: tick\n");

	/* No need to lock firmware memory. */
	if ((wpi_prph_read(sc, WPI_APMG_RFKILL) & 0x1) == 0) {
		/* Radio kill switch is still off. */
		callout_reset(&sc->watchdog_rfkill, hz, wpi_watchdog_rfkill,
		    sc);
	} else
		ieee80211_runtask(ic, &sc->sc_radioon_task);
}

/**
 * Called every second, wpi_watchdog used by the watch dog timer
 * to check that the card is still alive
 */
static void
wpi_watchdog(void *arg)
{
	struct wpi_softc *sc = arg;
	struct ifnet *ifp = sc->sc_ifp;
	struct ieee80211com *ic = ifp->if_l2com;

	DPRINTF(sc, WPI_DEBUG_WATCHDOG, "Watchdog: tick\n");

	if (sc->sc_tx_timer > 0) {
		if (--sc->sc_tx_timer == 0) {
			if_printf(ifp, "device timeout\n");
			if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
			ieee80211_runtask(ic, &sc->sc_reinittask);
		}
	}
	WPI_LOCK(sc);

	if (sc->sc_scan_timer > 0) {
		struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
		if (--sc->sc_scan_timer == 0 && vap != NULL) {
			if_printf(ifp, "scan timeout\n");
			ieee80211_cancel_scan(vap);
			ieee80211_runtask(ic, &sc->sc_reinittask);
		}
	}

	if (ifp->if_drv_flags & IFF_DRV_RUNNING)
		callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc);
		goto bad;
	sc->sc_tx_timer = 5;
	callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc);

	WPI_UNLOCK(sc);
	return 0;
bad:
	if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
	WPI_UNLOCK(sc);
	ieee80211_free_node(ni);
	return EIO;		/* XXX */
}

static int

{
	struct wpi_softc *sc = ifp->if_softc;
	struct ieee80211com *ic = ifp->if_l2com;
	struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
	struct ifreq *ifr = (struct ifreq *) data;
	int error = 0, startall = 0, stop = 0;

	switch (cmd) {
	case SIOCGIFADDR:
		error = ether_ioctl(ifp, cmd, data);
		break;
	case SIOCSIFFLAGS:
		WPI_LOCK(sc);
		if (ifp->if_flags & IFF_UP) {
			if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
				wpi_init_locked(sc);
				if (WPI_READ(sc, WPI_GP_CNTRL) &
				    WPI_GP_CNTRL_RFKILL)
					startall = 1;
				else
					stop = 1;
			}
		} else if (ifp->if_drv_flags & IFF_DRV_RUNNING)
			   (sc->flags & WPI_FLAG_HW_RADIO_OFF))
			wpi_stop_locked(sc);
		WPI_UNLOCK(sc);
		if (startall)
			ieee80211_start_all(ic);
		else if (vap != NULL && stop)
			ieee80211_stop(vap);
		break;
	case SIOCGIFMEDIA:
		error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
		break;
	case SIOCGIFADDR:
		error = ether_ioctl(ifp, cmd, data);
		break;
	default:
		error = EINVAL;
		break;

}

/*
 * Extract various information from EEPROM.
 */
static void
wpi_read_eeprom(struct wpi_softc *sc, uint8_t macaddr[IEEE80211_ADDR_LEN])
{
	int i;

	/* read the hardware capabilities, revision and SKU type */
	wpi_read_prom_data(sc, WPI_EEPROM_CAPABILITIES, &sc->cap,1);
	wpi_read_prom_data(sc, WPI_EEPROM_REVISION, &sc->rev,2);
	wpi_read_prom_data(sc, WPI_EEPROM_TYPE, &sc->type, 1);

	/* read the regulatory domain */
	wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, sc->domain, 4);

	/* read in the hw MAC address */
	wpi_read_prom_data(sc, WPI_EEPROM_MAC, macaddr, 6);

	/* read the list of authorized channels */
	for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++)
		wpi_read_eeprom_channels(sc,i);

	/* read the power level calibration info for each group */
	for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++)
		wpi_read_eeprom_group(sc,i);
}

/*
 * Send a command to the firmware.
 */
static int
wpi_cmd(struct wpi_softc *sc, int code, const void *buf, size_t size,
    int async)
{
	struct wpi_tx_ring *ring = &sc->txq[4];
	struct wpi_tx_desc *desc;
	struct wpi_tx_data *data;
	struct wpi_tx_cmd *cmd;
	struct mbuf *m;
	bus_addr_t paddr;
	int totlen, error;

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__);

	if (async == 0)
		WPI_LOCK_ASSERT(sc);
	}
#endif

	DPRINTF(sc, WPI_DEBUG_CMD, "wpi_cmd %s size %zu async %d\n",
	    wpi_cmd_str(code), size, async);

	if (sc->flags & WPI_FLAG_BUSY) {
		device_printf(sc->sc_dev, "%s: cmd %d not sent, busy\n",

		    __func__, code);
		return EAGAIN;
	}
	sc->flags |= WPI_FLAG_BUSY;

	KASSERT(size <= sizeof cmd->data, ("command %d too large: %d bytes",
	    code, size));

	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 wpi_tx_cmd *);
		error = bus_dmamap_load(ring->data_dmat, data->map, cmd,
		    totlen, wpi_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 + (WPI_PAD32(size) << 4);
	desc->segs[0].addr = htole32(paddr);
	desc->segs[0].len  = htole32(totlen);
	desc->segs[0].len  = htole32(4 + size);

	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) % WPI_TX_RING_COUNT;
	wpi_update_tx_ring(sc, ring);

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__);

	if (async) {
		sc->flags &= ~WPI_FLAG_BUSY;
		return 0;
	}


	return msleep(cmd, &sc->sc_mtx, PCATCH, "wpicmd", hz);
}

static int
wpi_wme_update(struct ieee80211com *ic)
{
#define WPI_EXP2(v)	htole16((1 << (v)) - 1)
#define WPI_USEC(v)	htole16(IEEE80211_TXOP_TO_US(v))
	struct wpi_softc *sc = ic->ic_ifp->if_softc;
	const struct wmeParams *wmep;
	struct wpi_wme_setup wme;
	int ac;

	/* don't override default WME values if WME is not actually enabled */
	if (!(ic->ic_flags & IEEE80211_F_WME))
		return 0;

	wme.flags = 0;
	for (ac = 0; ac < WME_NUM_AC; ac++) {
		wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac];
		wme.ac[ac].aifsn = wmep->wmep_aifsn;
		wme.ac[ac].cwmin = WPI_EXP2(wmep->wmep_logcwmin);
		wme.ac[ac].cwmax = WPI_EXP2(wmep->wmep_logcwmax);
		wme.ac[ac].txop  = WPI_USEC(wmep->wmep_txopLimit);

		DPRINTF(("setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d "
		    "txop=%d\n", ac, wme.ac[ac].aifsn, wme.ac[ac].cwmin,
		    wme.ac[ac].cwmax, wme.ac[ac].txop));
	}
	return wpi_cmd(sc, WPI_CMD_SET_WME, &wme, sizeof wme, 1);
#undef WPI_USEC
#undef WPI_EXP2
}

/*
 * Configure HW multi-rate retries.
 */
static int
wpi_mrr_setup(struct wpi_softc *sc)

	struct wpi_mrr_setup mrr;
	int i, error;

	/* CCK rates (not used with 802.11a). */
	for (i = WPI_RIDX_CCK1; i <= WPI_RIDX_CCK11; i++) {
	/* CCK rates (not used with 802.11a) */
	for (i = WPI_CCK1; i <= WPI_CCK11; i++) {
		mrr.rates[i].flags = 0;
		mrr.rates[i].plcp = wpi_ridx_to_plcp[i];
		/* Fallback to the immediate lower CCK rate (if any.) */
		mrr.rates[i].next =
		    (i == WPI_RIDX_CCK1) ? WPI_RIDX_CCK1 : i - 1;
		/* Try one time at this rate before falling back to "next". */
		mrr.rates[i].ntries = 1;
	}
	/* OFDM rates (not used with 802.11b). */
	for (i = WPI_RIDX_OFDM6; i <= WPI_RIDX_OFDM54; i++) {
	for (i = WPI_OFDM6; i <= WPI_OFDM54; i++) {
		mrr.rates[i].flags = 0;
		mrr.rates[i].plcp = wpi_ridx_to_plcp[i];
		/* Fallback to the immediate lower rate (if any.) */
		/* We allow fallback from OFDM/6 to CCK/2 in 11b/g mode. */
		mrr.rates[i].next = (i == WPI_RIDX_OFDM6) ?
		    ((ic->ic_curmode == IEEE80211_MODE_11A) ?
			WPI_RIDX_OFDM6 : WPI_RIDX_CCK2) :
		    i - 1;
		/* Try one time at this rate before falling back to "next". */
		mrr.rates[i].ntries = 1;
	}
	/* Setup MRR for control frames. */
	mrr.which = htole32(WPI_MRR_CTL);
	mrr.which = WPI_MRR_CTL;
	error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0);
	if (error != 0) {
		device_printf(sc->sc_dev,

		    "could not setup MRR for control frames\n");
		return error;
	}
	/* Setup MRR for data frames. */
	mrr.which = htole32(WPI_MRR_DATA);
	mrr.which = WPI_MRR_DATA;
	error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0);
	if (error != 0) {
		device_printf(sc->sc_dev,

		    "could not setup MRR for data frames\n");
		return error;
	}

	return 0;
}

static int
wpi_add_node(struct wpi_softc *sc, struct ieee80211_node *ni)
{
	struct ieee80211com *ic = ni->ni_ic;
	struct wpi_node *wn = (void *)ni;
	struct wpi_node_info node;

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);

	if (wn->id == WPI_ID_UNDEFINED)
		return EINVAL;

	memset(&node, 0, sizeof node);
	IEEE80211_ADDR_COPY(node.macaddr, ni->ni_bssid);
	node.id = wn->id;
	node.plcp = (ic->ic_curmode == IEEE80211_MODE_11A) ?
	    wpi_ridx_to_plcp[WPI_RIDX_OFDM6] : wpi_ridx_to_plcp[WPI_RIDX_CCK1];
	node.action = htole32(WPI_ACTION_SET_RATE);
	node.antenna = WPI_ANTENNA_BOTH;

	return wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1);
}

/*
 * Broadcast node is used to send group-addressed and management frames.
 */
static int
wpi_add_broadcast_node(struct wpi_softc *sc, int async)
{
	struct ifnet *ifp = sc->sc_ifp;
	struct ieee80211com *ic = ifp->if_l2com;
	struct wpi_node_info node;

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);

	memset(&node, 0, sizeof node);
	IEEE80211_ADDR_COPY(node.macaddr, ifp->if_broadcastaddr);
	node.id = WPI_ID_BROADCAST;
	node.plcp = (ic->ic_curmode == IEEE80211_MODE_11A) ?
	    wpi_ridx_to_plcp[WPI_RIDX_OFDM6] : wpi_ridx_to_plcp[WPI_RIDX_CCK1];
	node.action = htole32(WPI_ACTION_SET_RATE);
	node.antenna = WPI_ANTENNA_BOTH;

	return wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, async);
}

static int
wpi_add_ibss_node(struct wpi_softc *sc, struct ieee80211_node *ni)
{
	struct wpi_node *wn = (void *)ni;

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);

	if (wn->id != WPI_ID_UNDEFINED)
		return EINVAL;

	wn->id = alloc_unrl(sc->sc_unr);

	if (wn->id == (uint8_t)-1)
		return ENOBUFS;

	return wpi_add_node(sc, ni);
}

static void
wpi_del_node(struct wpi_softc *sc, struct ieee80211_node *ni)
{
	struct wpi_node *wn = (void *)ni;
	struct wpi_cmd_del_node node;
	int error;

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);

	if (wn->id == WPI_ID_UNDEFINED) {
		device_printf(sc->sc_dev, "%s: undefined node id passed\n",
		    __func__);
		return;
	}

	memset(&node, 0, sizeof node);
	IEEE80211_ADDR_COPY(node.macaddr, ni->ni_bssid);
	node.count = 1;

	error = wpi_cmd(sc, WPI_CMD_DEL_NODE, &node, sizeof node, 1);
	if (error != 0) {
		device_printf(sc->sc_dev,
		    "%s: could not delete node %u, error %d\n", __func__,
		    wn->id, error);
	}
}

static int
wpi_updateedca(struct ieee80211com *ic)
{
#define WPI_EXP2(x)	((1 << (x)) - 1)	/* CWmin = 2^ECWmin - 1 */
	struct wpi_softc *sc = ic->ic_ifp->if_softc;
	struct wpi_edca_params cmd;
	int aci, error;

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__);

	memset(&cmd, 0, sizeof cmd);
	cmd.flags = htole32(WPI_EDCA_UPDATE);
	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(WPI_EXP2(ac->wmep_logcwmin));
		cmd.ac[aci].cwmax = htole16(WPI_EXP2(ac->wmep_logcwmax));
		cmd.ac[aci].txoplimit = 
		    htole16(IEEE80211_TXOP_TO_US(ac->wmep_txopLimit));

		DPRINTF(sc, WPI_DEBUG_EDCA,
		    "setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d "
		    "txoplimit=%d\n", aci, cmd.ac[aci].aifsn,
		    cmd.ac[aci].cwmin, cmd.ac[aci].cwmax,
		    cmd.ac[aci].txoplimit);
	}
	IEEE80211_UNLOCK(ic);
	WPI_LOCK(sc);
	error = wpi_cmd(sc, WPI_CMD_EDCA_PARAMS, &cmd, sizeof cmd, 1);
	WPI_UNLOCK(sc);
	IEEE80211_LOCK(ic);

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__);

	return error;
#undef WPI_EXP2
}

static void
wpi_set_promisc(struct wpi_softc *sc)
{
	struct ifnet *ifp = sc->sc_ifp;
	uint32_t promisc_filter;

	promisc_filter = WPI_FILTER_PROMISC | WPI_FILTER_CTL;

	if (ifp->if_flags & IFF_PROMISC)
		sc->rxon.filter |= htole32(promisc_filter);
	else
		sc->rxon.filter &= ~htole32(promisc_filter);
}

static void
wpi_update_promisc(struct ifnet *ifp)
{
	struct wpi_softc *sc = ifp->if_softc;

	wpi_set_promisc(sc);

	WPI_LOCK(sc);
	if (wpi_send_rxon(sc, 1, 1) != 0) {
		device_printf(sc->sc_dev, "%s: could not send RXON\n",
		    __func__);
	}
	WPI_UNLOCK(sc);
}

static void
wpi_update_mcast(struct ifnet *ifp)
{
	/* Ignore */
}

static void
wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on)
{
	struct wpi_cmd_led led;

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);

	led.which = which;
	led.unit = htole32(100000);	/* on/off in unit of 100ms */
	led.off = off;
	led.on = on;

	(void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1);
}

static int
wpi_set_timing(struct wpi_softc *sc, struct ieee80211_node *ni)
{
	struct wpi_cmd_timing cmd;
	uint64_t val, mod;

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);
	memcpy(&tsf.tstamp, ni->ni_tstamp.data, 8);
	tsf.bintval = htole16(ni->ni_intval);
	tsf.lintval = htole16(10);

	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, WPI_DEBUG_RESET, "timing bintval=%u tstamp=%ju, init=%u\n",
	    ni->ni_intval, le64toh(cmd.tstamp), (uint32_t)(val - mod));

	return wpi_cmd(sc, WPI_CMD_TIMING, &cmd, sizeof cmd, 1);
}

#if 0
/*
 * This function is called periodically (every 60 seconds) to adjust output
 * power to temperature changes.
 */
static void
wpi_power_calibration(struct wpi_softc *sc)
{
	int temp;

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);

	/* Update sensor data. */
	temp = (int)WPI_READ(sc, WPI_UCODE_GP2);
	DPRINTF(sc, WPI_DEBUG_TEMP, "Temp in calibration is: %d\n", temp);

	/* Sanity-check read value. */
	if (temp < -260 || temp > 25) {
		/* This can't be correct, ignore. */
		DPRINTF(sc, WPI_DEBUG_TEMP,
		    "out-of-range temperature reported: %d\n", temp);
		return;
	}

	DPRINTF(sc, WPI_DEBUG_TEMP, "temperature %d->%d\n", sc->temp, temp);

	/* Adjust Tx power if need be. */
	if (abs(temp - sc->temp) <= 6)
		return;

	sc->temp = temp;

	if (wpi_set_txpower(sc, 1) != 0) {
		/* just warn, too bad for the automatic calibration... */
		device_printf(sc->sc_dev,"could not adjust Tx power\n");
	}
}

/*
 * Set TX power for current channel.
 */
static int
wpi_set_txpower(struct wpi_softc *sc, int async)
{
	struct ifnet *ifp = sc->sc_ifp;
	struct ieee80211com *ic = ifp->if_l2com;
	struct ieee80211_channel *ch;
	struct wpi_power_group *group;
	struct wpi_cmd_txpower cmd;
	uint8_t chan;
	int idx, i;
	struct ieee80211_beacon_offsets bo;
	struct mbuf *m0;
	bus_addr_t physaddr;
	int error;

	/* Retrieve current channel from last RXON. */
	chan = sc->rxon.chan;
	ch = &ic->ic_channels[chan];

	/* Find the TX power group to which this channel belongs. */
	if (IEEE80211_IS_CHAN_5GHZ(ch)) {
		for (group = &sc->groups[1]; group < &sc->groups[4]; group++)
			if (chan <= group->chan)
				break;
	} else
		group = &sc->groups[0];

	memset(&cmd, 0, sizeof cmd);
	cmd.band = IEEE80211_IS_CHAN_5GHZ(ch) ? 0 : 1;
	cmd.chan = htole16(chan);

	/* Set TX power for all OFDM and CCK rates. */
	for (i = 0; i <= WPI_RIDX_MAX ; i++) {
		/* Retrieve TX power for this channel/rate. */
		idx = wpi_get_power_index(sc, group, ch, i);

		cmd.rates[i].plcp = wpi_ridx_to_plcp[i];

		if (IEEE80211_IS_CHAN_5GHZ(ch)) {
			cmd.rates[i].rf_gain = wpi_rf_gain_5ghz[idx];
			cmd.rates[i].dsp_gain = wpi_dsp_gain_5ghz[idx];
		} else {
			cmd.rates[i].rf_gain = wpi_rf_gain_2ghz[idx];
			cmd.rates[i].dsp_gain = wpi_dsp_gain_2ghz[idx];
		}
		DPRINTF(sc, WPI_DEBUG_TEMP,
		    "chan %d/ridx %d: power index %d\n", chan, i, idx);
	}

	return wpi_cmd(sc, WPI_CMD_TXPOWER, &cmd, sizeof cmd, async);
}
	cmd->flags = 0;
	cmd->qid = ring->qid;
	cmd->idx = ring->cur;

/*
 * Determine Tx power index for a given channel/rate combination.
 * This takes into account the regulatory information from EEPROM and the
 * current temperature.
 */
static int
wpi_get_power_index(struct wpi_softc *sc, struct wpi_power_group *group,
    struct ieee80211_channel *c, int ridx)
{
/* 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(((x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n))

	struct ifnet *ifp = sc->sc_ifp;
	struct ieee80211com *ic = ifp->if_l2com;
	struct wpi_power_sample *sample;
	int pwr, idx;
	u_int chan;

	/* Get channel number. */
	chan = ieee80211_chan2ieee(ic, c);

	/* Default TX power is group maximum TX power minus 3dB. */
	pwr = group->maxpwr / 2;

	/* Decrease TX power for highest OFDM rates to reduce distortion. */
	switch (ridx) {
	case WPI_RIDX_OFDM36:
		pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 0 :  5;
		break;
	case WPI_RIDX_OFDM48:
		pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 7 : 10;
		break;
	case WPI_RIDX_OFDM54:
		pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 9 : 12;
		break;
	}

	/* Never exceed the channel maximum allowed TX power. */
	pwr = min(pwr, sc->maxpwr[chan]);

	/* Retrieve TX power index into gain tables from samples. */
	for (sample = group->samples; sample < &group->samples[3]; sample++)
		if (pwr > sample[1].power)
			break;
	/* Fixed-point linear interpolation using a 19-bit fractional part. */
	idx = interpolate(pwr, sample[0].power, sample[0].index,
	    sample[1].power, sample[1].index, 19);

	/*-
	 * Adjust power index based on current temperature:
	 * - if cooler than factory-calibrated: decrease output power
	 * - if warmer than factory-calibrated: increase output power
	 */
	idx -= (sc->temp - group->temp) * 11 / 100;

	/* Decrease TX power for CCK rates (-5dB). */
	if (ridx >= WPI_RIDX_CCK1)
		idx += 10;

	/* Make sure idx stays in a valid range. */
	if (idx < 0)
		return 0;
	if (idx > WPI_MAX_PWR_INDEX)
		return WPI_MAX_PWR_INDEX;
	return idx;

#undef interpolate
#undef fdivround
}
#endif

/*
 * 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
wpi_set_pslevel(struct wpi_softc *sc, uint8_t dtim, int level, int async)
{
	struct wpi_pmgt_cmd cmd;
	const struct wpi_pmgt *pmgt;
	uint32_t max, skip_dtim;
	uint32_t reg;
	int i;

	DPRINTF(sc, WPI_DEBUG_PWRSAVE,
	    "%s: dtim=%d, level=%d, async=%d\n",
	    __func__, dtim, level, async);

	/* Select which PS parameters to use. */
	if (dtim <= 10)
		pmgt = &wpi_pmgt[0][level];
	else
		pmgt = &wpi_pmgt[1][level];

	memset(&cmd, 0, sizeof cmd);
	if (level != 0)	/* not CAM */
		cmd.flags |= htole16(WPI_PS_ALLOW_SLEEP);
	/* Retrieve PCIe Active State Power Management (ASPM). */
	reg = pci_read_config(sc->sc_dev, sc->sc_cap_off + 0x10, 1);
	if (!(reg & 0x1))	/* L0s Entry disabled. */
		cmd.flags |= htole16(WPI_PS_PCI_PMGT);

	cmd.rxtimeout = htole32(pmgt->rxtimeout * IEEE80211_DUR_TU);
	cmd.txtimeout = htole32(pmgt->txtimeout * IEEE80211_DUR_TU);

	if (dtim == 0) {
		dtim = 1;
		skip_dtim = 0;
	} else
		skip_dtim = pmgt->skip_dtim;

	if (skip_dtim != 0) {
		cmd.flags |= htole16(WPI_PS_SLEEP_OVER_DTIM);
		max = pmgt->intval[4];
		if (max == (uint32_t)-1)
			max = dtim * (skip_dtim + 1);
		else if (max > dtim)
			max = (max / dtim) * dtim;
	} else
		max = dtim;

	for (i = 0; i < 5; i++)
		cmd.intval[i] = htole32(MIN(max, pmgt->intval[i]));

	return wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &cmd, sizeof cmd, async);
}

static int      
wpi_send_btcoex(struct wpi_softc *sc)
{
	struct wpi_bluetooth cmd;

        memset(&cmd, 0, sizeof cmd);
        cmd.flags = WPI_BT_COEX_MODE_4WIRE;
        cmd.lead_time = WPI_BT_LEAD_TIME_DEF;
        cmd.max_kill = WPI_BT_MAX_KILL_DEF;
	DPRINTF(sc, WPI_DEBUG_RESET, "%s: configuring bluetooth coexistence\n",
	    __func__);
        return wpi_cmd(sc, WPI_CMD_BT_COEX, &cmd, sizeof(cmd), 0);
}

static int
wpi_send_rxon(struct wpi_softc *sc, int assoc, int async)
{
	int error;

	if (assoc && (sc->rxon.filter & htole32(WPI_FILTER_BSS))) {
		struct wpi_assoc rxon_assoc;

		rxon_assoc.flags = sc->rxon.flags;
		rxon_assoc.filter = sc->rxon.filter;
		rxon_assoc.ofdm_mask = sc->rxon.ofdm_mask;
		rxon_assoc.cck_mask = sc->rxon.cck_mask;
		rxon_assoc.reserved = 0;

		error = wpi_cmd(sc, WPI_CMD_RXON_ASSOC, &rxon_assoc,
		    sizeof (struct wpi_assoc), async);
	} else {
		error = wpi_cmd(sc, WPI_CMD_RXON, &sc->rxon,
		    sizeof (struct wpi_rxon), async);
	}
	if (IEEE80211_IS_CHAN_A(ni->ni_chan)) {
		sc->config.cck_mask  = 0;
		sc->config.ofdm_mask = 0x15;
	} else if (IEEE80211_IS_CHAN_B(ni->ni_chan)) {
		sc->config.cck_mask  = 0x03;
		sc->config.ofdm_mask = 0;
	} else {
		/* XXX assume 802.11b/g */
		sc->config.cck_mask  = 0x0f;
		sc->config.ofdm_mask = 0x15;
	}

	DPRINTF(("config chan %d flags %x cck %x ofdm %x\n", sc->config.chan,
		sc->config.flags, sc->config.cck_mask, sc->config.ofdm_mask));
	error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config,
		sizeof (struct wpi_config), 1);
	if (error != 0) {
		device_printf(sc->sc_dev, "RXON command failed, error %d\n",
		    error);
		return error;
	}

	/* Configuration has changed, set Tx power accordingly. */
	if ((error = wpi_set_txpower(sc, async)) != 0) {
		device_printf(sc->sc_dev,
		    "%s: could not set TX power, error %d\n", __func__, error);
		return error;
	}

	if (!(sc->rxon.filter & htole32(WPI_FILTER_BSS))) {
		/* Add broadcast node. */
		error = wpi_add_broadcast_node(sc, async);
		if (error != 0) {
			device_printf(sc->sc_dev,
			    "could not add broadcast node, error %d\n", error);
			return error;
		}
	}
	if (error != 0)
		device_printf(sc->sc_dev, "could not add BSS node\n");

	return 0;
}

/**
 * Configure the card to listen to a particular channel, this transisions the
 * card in to being able to receive frames from remote devices.
 */
static int
wpi_config(struct wpi_softc *sc)
{
	struct ifnet *ifp = sc->sc_ifp;
	struct ieee80211com *ic = ifp->if_l2com;
	uint32_t flags;
	int error;

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__);

	/* Set power saving level to CAM during initialization. */
	if ((error = wpi_set_pslevel(sc, 0, 0, 0)) != 0) {
		device_printf(sc->sc_dev,
		    "%s: could not set power saving level\n", __func__);
		return error;
	}

	/* Configure bluetooth coexistence. */
	if ((error = wpi_send_btcoex(sc)) != 0) {
		device_printf(sc->sc_dev,
		    "could not configure bluetooth coexistence\n");
		return error;
	}

	/* Configure adapter. */
	memset(&sc->rxon, 0, sizeof (struct wpi_rxon));
	IEEE80211_ADDR_COPY(sc->rxon.myaddr, IF_LLADDR(ifp));
	sc->config.flags &= ~htole32(WPI_CONFIG_SHPREAMBLE |
	    WPI_CONFIG_SHSLOT);
	if (ic->ic_flags & IEEE80211_F_SHSLOT)
		sc->config.flags |= htole32(WPI_CONFIG_SHSLOT);
	if (ic->ic_flags & IEEE80211_F_SHPREAMBLE)
		sc->config.flags |= htole32(WPI_CONFIG_SHPREAMBLE);
	sc->config.filter |= htole32(WPI_FILTER_BSS);

	/* Set default channel. */
	sc->rxon.chan = ieee80211_chan2ieee(ic, ic->ic_curchan);
	sc->rxon.flags = htole32(WPI_RXON_TSF | WPI_RXON_CTS_TO_SELF);
	if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan))
		sc->rxon.flags |= htole32(WPI_RXON_AUTO | WPI_RXON_24GHZ);

	switch (ic->ic_opmode) {
	case IEEE80211_M_STA:
		sc->rxon.mode = WPI_MODE_STA;
		sc->rxon.filter = htole32(WPI_FILTER_MULTICAST);
		break;
	case IEEE80211_M_IBSS:
		sc->rxon.mode = WPI_MODE_IBSS;
		sc->rxon.filter = htole32(WPI_FILTER_BEACON |
		    WPI_FILTER_MULTICAST);
		break;
	/* XXX workaround for passive channels selection */
	case IEEE80211_M_AHDEMO:
		sc->rxon.filter = htole32(WPI_FILTER_MULTICAST);
		/* FALLTHROUGH */
	case IEEE80211_M_HOSTAP:
		sc->rxon.mode = WPI_MODE_HOSTAP;
		break;
	case IEEE80211_M_MONITOR:
		sc->rxon.mode = WPI_MODE_MONITOR;
		sc->rxon.filter = htole32(WPI_FILTER_MULTICAST);
		break;
	default:
		device_printf(sc->sc_dev, "unknown opmode %d\n", ic->ic_opmode);
		return EINVAL;
	}
	wpi_set_promisc(sc);
	sc->rxon.cck_mask  = 0x0f;	/* not yet negotiated */
	sc->rxon.ofdm_mask = 0xff;	/* not yet negotiated */

	if ((error = wpi_send_rxon(sc, 0, 0)) != 0) {
		device_printf(sc->sc_dev, "%s: could not send RXON\n",
		    __func__);
		return error;
	}

	/* Setup rate scalling. */
	if ((error = wpi_mrr_setup(sc)) != 0) {
		device_printf(sc->sc_dev, "could not setup MRR, error %d\n",
		    error);
		return error;
	}

	/* Disable beacon notifications (unused). */
	flags = WPI_STATISTICS_BEACON_DISABLE;
	error = wpi_cmd(sc, WPI_CMD_GET_STATISTICS, &flags, sizeof flags, 1);
	if (error != 0) {
		device_printf(sc->sc_dev,
		    "could not disable beacon statistics, error %d\n", error);
		return error;
	}

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__);
	wpi_set_led(sc, WPI_LED_LINK, 0, 1);

	return 0;
}

static uint16_t
wpi_get_active_dwell_time(struct wpi_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 (WPI_ACTIVE_DWELL_TIME_2GHZ +
		WPI_ACTIVE_DWELL_FACTOR_2GHZ * (n_probes + 1));
	}

	/* 5GHz dwell time. */
	return (WPI_ACTIVE_DWELL_TIME_5GHZ +
	    WPI_ACTIVE_DWELL_FACTOR_5GHZ * (n_probes + 1));
}

/*
 * Limit the total dwell time to 85% of the beacon interval.
 *
 * Returns the dwell time in milliseconds.
 * construct the probe & channels, we duplicate what's needed here. XXX In the
 * future, this function should be modified to use wpi_cmd to help cleanup the
 * code base.
 */
static uint16_t
wpi_limit_dwell(struct wpi_softc *sc, uint16_t dwell_time)
{
	struct ieee80211com *ic = sc->sc_ifp->if_l2com;
	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, WPI_DEBUG_SCAN, "%s: bintval=%d\n", __func__,
		    bintval);
		return (MIN(WPI_PASSIVE_DWELL_BASE, ((bintval * 85) / 100)));
	}

	/* No association context? Default. */
	return (WPI_PASSIVE_DWELL_BASE);
}

static uint16_t
wpi_get_passive_dwell_time(struct wpi_softc *sc, struct ieee80211_channel *c)
{
	uint16_t passive;

	if (c == NULL || IEEE80211_IS_CHAN_2GHZ(c))
		passive = WPI_PASSIVE_DWELL_BASE + WPI_PASSIVE_DWELL_TIME_2GHZ;
	else
		passive = WPI_PASSIVE_DWELL_BASE + WPI_PASSIVE_DWELL_TIME_5GHZ;

	/* Clamp to the beacon interval if we're associated. */
	return (wpi_limit_dwell(sc, passive));
}

/*
 * Send a scan request to the firmware.
 */
static int
wpi_scan(struct wpi_softc *sc, struct ieee80211_channel *c)
{
	struct ifnet *ifp = sc->sc_ifp;
	struct ieee80211com *ic = ifp->if_l2com;
	struct ieee80211_scan_state *ss = ic->ic_scan;
	struct wpi_tx_ring *ring = &sc->cmdq;
	struct wpi_tx_desc *desc;
	struct wpi_tx_data *data;
	struct wpi_tx_cmd *cmd;
	struct wpi_scan_hdr *hdr;
	struct wpi_cmd_data *tx;
	struct wpi_scan_essid *essids;
	struct wpi_scan_chan *chan;
	struct ieee80211_frame *wh;
	struct ieee80211_rateset *rs;
	uint16_t dwell_active, dwell_passive;
	uint8_t *buf, *frm;
	int buflen, error, i, nssid;
	int pktlen, error, i, nssid;
	bus_addr_t physaddr;

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__);
	data = &ring->data[ring->cur];

	/*
	 * We are absolutely not allowed to send a scan command when another
	 * scan command is pending.
	 */
	if (sc->sc_scan_timer) {
		device_printf(sc->sc_dev, "%s: called whilst scanning!\n",
		    __func__);
		return (EAGAIN);
	}

	buf = malloc(WPI_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 wpi_scan_hdr *)buf;

	cmd = mtod(data->m, struct wpi_tx_cmd *);
	cmd->code = WPI_CMD_SCAN;
	cmd->flags = 0;
	cmd->qid = ring->qid;
	cmd->idx = ring->cur;

	hdr = (struct wpi_scan_hdr *)cmd->data;
	memset(hdr, 0, sizeof(struct wpi_scan_hdr));

	/*
	 * Move to the next channel if no packets are received within 10 msecs
	 * after sending the probe request.
	 * of active scans).
	 */
	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 * IEEE80211_DUR_TU);
	hdr->pause_svc = htole32((4 << 24) |
	    (100 * IEEE80211_DUR_TU));	/* Hardcode for now */
	hdr->filter = htole32(WPI_FILTER_MULTICAST | WPI_FILTER_BEACON);

	tx = (struct wpi_cmd_data *)(hdr + 1);
	tx->flags = htole32(WPI_TX_AUTO_SEQ);
	tx->id = WPI_ID_BROADCAST;
	tx->lifetime = htole32(WPI_LIFETIME_INFINITE);

	if (IEEE80211_IS_CHAN_5GHZ(c)) {
		/* Send probe requests at 6Mbps. */
		tx->plcp = wpi_ridx_to_plcp[WPI_RIDX_OFDM6];
		rs = &ic->ic_sup_rates[IEEE80211_MODE_11A];
	} else {
		hdr->flags = htole32(WPI_RXON_24GHZ | WPI_RXON_AUTO);
		/* Send probe requests at 1Mbps. */
		tx->plcp = wpi_ridx_to_plcp[WPI_RIDX_CCK1];
		rs = &ic->ic_sup_rates[IEEE80211_MODE_11G];
	}
	hdr->tx.id = WPI_ID_BROADCAST;
	hdr->tx.lifetime = htole32(WPI_LIFETIME_INFINITE);
	hdr->tx.flags = htole32(WPI_TX_AUTO_SEQ);

	essids = (struct wpi_scan_essid *)(tx + 1);
	nssid = MIN(ss->ss_nssid, WPI_SCAN_MAX_ESSIDS);
	for (i = 0; i < nssid; i++) {
		essids[i].id = IEEE80211_ELEMID_SSID;
		essids[i].len = MIN(ss->ss_ssid[i].len, IEEE80211_NWID_LEN);
		memcpy(essids[i].data, ss->ss_ssid[i].ssid, essids[i].len);
		    hdr->scan_essids[i].esslen);
#ifdef WPI_DEBUG
		if (sc->sc_debug & WPI_DEBUG_SCAN) {
			printf("Scanning Essid: ");
			ieee80211_print_essid(essids[i].data, essids[i].len);
			    hdr->scan_essids[i].esslen);
			printf("\n");
		}
#endif

	 * Build a probe request frame.  Most of the following code is a
	 * copy & paste of what is done in net80211.
	 */
	wh = (struct ieee80211_frame *)(essids + WPI_SCAN_MAX_ESSIDS);
	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, ifp->if_broadcastaddr);
	IEEE80211_ADDR_COPY(wh->i_addr2, IF_LLADDR(ifp));
	IEEE80211_ADDR_COPY(wh->i_addr3, ifp->if_broadcastaddr);
	*(uint16_t *)&wh->i_dur[0] = 0;	/* filled by h/w */
	*(uint16_t *)&wh->i_seq[0] = 0;	/* filled by h/w */

	frm = (uint8_t *)(wh + 1);

	mode = ieee80211_chan2mode(ic->ic_curchan);
	rs = &ic->ic_sup_rates[mode];

	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);

	/* Set length of probe request. */
	tx->len = htole16(frm - (uint8_t *)wh);

	/*
	 * Construct information about the channel that we

	 * want to scan. The firmware expects this to be directly
	 * after the scan probe request
	 */
	c = ic->ic_curchan;
	chan = (struct wpi_scan_chan *)frm;
	chan->chan = htole16(ieee80211_chan2ieee(ic, c));
	chan->flags = 0;
	if (nssid) {
		hdr->crc_threshold = WPI_SCAN_CRC_TH_DEFAULT;
		chan->flags |= WPI_CHAN_NPBREQS(nssid);
	} else
		hdr->crc_threshold = WPI_SCAN_CRC_TH_NEVER;

	if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE))
		chan->flags |= WPI_CHAN_ACTIVE;
		if (nssid != 0)
			chan->flags |= WPI_CHAN_DIRECT;
	}
	chan->gain_dsp = 0x6e; /* Default level */
	if (IEEE80211_IS_CHAN_5GHZ(c)) {
		chan->active = htole16(10);
		chan->passive = htole16(ss->ss_maxdwell);
		chan->gain_radio = 0x3b;
	} else {
		chan->active = htole16(20);
		chan->passive = htole16(ss->ss_maxdwell);
		chan->gain_radio = 0x28;
	}

	/*
	 * Calculate the active/passive dwell times.
	 */
	     c->ic_flags & IEEE80211_CHAN_PASSIVE));

	dwell_active = wpi_get_active_dwell_time(sc, c, nssid);
	dwell_passive = wpi_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);

	chan->dsp_gain = 0x6e;  /* Default level */

	if (IEEE80211_IS_CHAN_5GHZ(c))
		chan->rf_gain = 0x3b;
	else
		chan->rf_gain = 0x28;

	DPRINTF(sc, WPI_DEBUG_SCAN, "Scanning %u Passive: %d\n",
	     chan->chan, (c->ic_flags & IEEE80211_CHAN_PASSIVE) ? 1 : 0);

	hdr->nchan++;
	chan++;

	buflen = (uint8_t *)chan - buf;
	hdr->len = htole16(buflen);
	// XXX All Channels....
	for (c  = &ic->ic_channels[1];
	     c <= &ic->ic_channels[IEEE80211_CHAN_MAX]; c++) {
		if ((c->ic_flags & ic->ic_curchan->ic_flags) != ic->ic_curchan->ic_flags)
			continue;

	DPRINTF(sc, WPI_DEBUG_CMD, "sending scan command nchan=%d\n",
	    hdr->nchan);
	error = wpi_cmd(sc, WPI_CMD_SCAN, buf, buflen, 1);
	free(buf, M_DEVBUF);
		    if (ic->ic_des_ssid[0].len != 0)
			chan->flags |= WPI_CHAN_DIRECT;
		}
		chan->gain_dsp = 0x6e; /* Default level */
		if (IEEE80211_IS_CHAN_5GHZ(c)) {
			chan->active = htole16(10);
			chan->passive = htole16(110);
			chan->gain_radio = 0x3b;
		} else {
			chan->active = htole16(20);
			chan->passive = htole16(120);
			chan->gain_radio = 0x28;
		}

	sc->sc_scan_timer = 5;
			 ("Scanning %u Passive: %d\n",
			  chan->chan,
			  c->ic_flags & IEEE80211_CHAN_PASSIVE));

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__);
		chan++;

	return error;
}
#endif

static int
wpi_auth(struct wpi_softc *sc, struct ieee80211vap *vap)
{
	struct ieee80211com *ic = vap->iv_ic;
	struct ieee80211_node *ni = vap->iv_bss;
	int error;

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__);

	/* Update adapter configuration. */
	sc->rxon.associd = 0;
	sc->rxon.filter &= ~htole32(WPI_FILTER_BSS);
	IEEE80211_ADDR_COPY(sc->rxon.bssid, ni->ni_bssid);
	sc->rxon.chan = ieee80211_chan2ieee(ic, ni->ni_chan);
	sc->rxon.flags = htole32(WPI_RXON_TSF | WPI_RXON_CTS_TO_SELF);
	if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan))
		sc->rxon.flags |= htole32(WPI_RXON_AUTO | WPI_RXON_24GHZ);
	if (ic->ic_flags & IEEE80211_F_SHSLOT)
		sc->rxon.flags |= htole32(WPI_RXON_SHSLOT);
	if (ic->ic_flags & IEEE80211_F_SHPREAMBLE)
		sc->rxon.flags |= htole32(WPI_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;
	}

	DPRINTF(sc, WPI_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 ((error = wpi_send_rxon(sc, 0, 1)) != 0) {
		device_printf(sc->sc_dev, "%s: could not send RXON\n",
		    __func__);
	}

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__);
	ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT;
	WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur);

	return error;
	return 0;	/* will be notified async. of failure/success */
}

/**
 * Configure the card to listen to a particular channel, this transisions the
 * card in to being able to receive frames from remote devices.
 */
static int
wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni)
{
	struct ifnet *ifp = sc->sc_ifp;
	struct ieee80211com *ic = ifp->if_l2com;
	struct ieee80211vap *vap = ni->ni_vap;
	struct wpi_vap *wvp = WPI_VAP(vap);
	struct wpi_buf *bcn = &wvp->wv_bcbuf;
	struct ieee80211_beacon_offsets bo;
	struct wpi_cmd_beacon *cmd;
	struct mbuf *m;
	int totlen;

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);

	if (ni->ni_chan == IEEE80211_CHAN_ANYC)
		return EINVAL;

	m = ieee80211_beacon_alloc(ni, &bo);
	if (m == NULL) {
		device_printf(sc->sc_dev,
		    "%s: could not allocate beacon frame\n", __func__);
		return ENOMEM;
	}
	totlen = m->m_pkthdr.len;

	if (bcn->data == NULL) {
		cmd = malloc(sizeof(struct wpi_cmd_beacon), M_DEVBUF,
		    M_NOWAIT | M_ZERO);

		if (cmd == NULL) {
			device_printf(sc->sc_dev,
			    "could not allocate buffer for beacon command\n");
			m_freem(m);
			return ENOMEM;
		}

		cmd->id = WPI_ID_BROADCAST;
		cmd->ofdm_mask = 0xff;
		cmd->cck_mask = 0x0f;
		cmd->lifetime = htole32(WPI_LIFETIME_INFINITE);
		cmd->flags = htole32(WPI_TX_AUTO_SEQ | WPI_TX_INSERT_TSTAMP);

		bcn->data = cmd;
		bcn->ni = NULL;
		bcn->code = WPI_CMD_SET_BEACON;
		bcn->ac = 4;
		bcn->size = sizeof(struct wpi_cmd_beacon);
	} else
		cmd = bcn->data;

	cmd->len = htole16(totlen);
	cmd->plcp = (ic->ic_curmode == IEEE80211_MODE_11A) ?
	    wpi_ridx_to_plcp[WPI_RIDX_OFDM6] : wpi_ridx_to_plcp[WPI_RIDX_CCK1];

	/* NB: m will be freed in wpi_cmd_done() */
	bcn->m = m;

	return wpi_cmd2(sc, bcn);
}

static void
wpi_update_beacon(struct ieee80211vap *vap, int item)
{
	struct ieee80211_node *ni = vap->iv_bss;
	struct ifnet *ifp = vap->iv_ifp;
	struct wpi_softc *sc = ifp->if_softc;
	int error;

	if ((error = wpi_setup_beacon(sc, ni)) != 0) {
		device_printf(sc->sc_dev,
		    "%s: could not update beacon frame, error %d", __func__,
		    error);
	}
}

static int
wpi_run(struct wpi_softc *sc, struct ieee80211vap *vap)
{
	struct ieee80211com *ic = vap->iv_ic;
	struct ieee80211_node *ni = vap->iv_bss;
	int error;

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__);

	if (vap->iv_opmode == IEEE80211_M_MONITOR) {
		/* Link LED blinks while monitoring. */
		wpi_set_led(sc, WPI_LED_LINK, 5, 5);
		return 0;
	}

	/* XXX kernel panic workaround */
	if (ni->ni_chan == IEEE80211_CHAN_ANYC) {
		device_printf(sc->sc_dev, "%s: incomplete configuration\n",
		    __func__);
		sc->config.filter |= htole32(WPI_FILTER_MULTICAST);
		break;
	case IEEE80211_M_IBSS:
	case IEEE80211_M_AHDEMO:
		sc->config.mode = WPI_MODE_IBSS;
		sc->config.filter |= htole32(WPI_FILTER_BEACON |
					     WPI_FILTER_MULTICAST);
		break;
	case IEEE80211_M_HOSTAP:
		sc->config.mode = WPI_MODE_HOSTAP;
		break;
	case IEEE80211_M_MONITOR:
		sc->config.mode = WPI_MODE_MONITOR;
		sc->config.filter |= htole32(WPI_FILTER_MULTICAST |
			WPI_FILTER_CTL | WPI_FILTER_PROMISC);
		break;
	default:
		device_printf(sc->sc_dev, "unknown opmode %d\n", ic->ic_opmode);
		return EINVAL;
	}

	if ((error = wpi_set_timing(sc, ni)) != 0) {
		device_printf(sc->sc_dev,
		    "%s: could not set timing, error %d\n", __func__, error);
	if (error != 0) {
		device_printf(sc->sc_dev, "configure command failed\n");
		return error;
	}

	/* Update adapter configuration. */
	IEEE80211_ADDR_COPY(sc->rxon.bssid, ni->ni_bssid);
	sc->rxon.associd = htole16(IEEE80211_NODE_AID(ni));
	sc->rxon.chan = ieee80211_chan2ieee(ic, ni->ni_chan);
	sc->rxon.flags = htole32(WPI_RXON_TSF | WPI_RXON_CTS_TO_SELF);
	if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan))
		sc->rxon.flags |= htole32(WPI_RXON_AUTO | WPI_RXON_24GHZ);
	/* Short preamble and slot time are negotiated when associating. */
	sc->rxon.flags &= ~htole32(WPI_RXON_SHPREAMBLE | WPI_RXON_SHSLOT);
	if (ic->ic_flags & IEEE80211_F_SHSLOT)
		sc->rxon.flags |= htole32(WPI_RXON_SHSLOT);
	if (ic->ic_flags & IEEE80211_F_SHPREAMBLE)
		sc->rxon.flags |= htole32(WPI_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;
	}
	sc->rxon.filter |= htole32(WPI_FILTER_BSS);

	/* XXX put somewhere HC_QOS_SUPPORT_ASSOC + HC_IBSS_START */

	DPRINTF(sc, WPI_DEBUG_STATE, "rxon chan %d flags %x\n",
	    sc->rxon.chan, sc->rxon.flags);

	if ((error = wpi_send_rxon(sc, 0, 1)) != 0) {
		device_printf(sc->sc_dev, "%s: could not send RXON\n",
		    __func__);
		return error;
	}

	if (vap->iv_opmode == IEEE80211_M_IBSS) {
		if ((error = wpi_setup_beacon(sc, ni)) != 0) {
			device_printf(sc->sc_dev,
			    "%s: could not setup beacon, error %d\n", __func__,
			    error);
			return error;
		}
	}

	if (vap->iv_opmode == IEEE80211_M_STA) {
		/* Add BSS node. */
		((struct wpi_node *)ni)->id = WPI_ID_BSS;
		if ((error = wpi_add_node(sc, ni)) != 0) {
			device_printf(sc->sc_dev,
			    "%s: could not add BSS node, error %d\n", __func__,
			    error);
			return error;
		}
	}

	/* Link LED always on while associated. */
	wpi_set_led(sc, WPI_LED_LINK, 0, 1);
{
	uint32_t tmp;
	int ntries;

	/* Start periodic calibration timer. */
	callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc);

	/* Enable power-saving mode if requested by user. */
	if (vap->iv_flags & IEEE80211_F_PMGTON)
		(void)wpi_set_pslevel(sc, 0, 3, 1);

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__);
	if ((tmp & WPI_GPIO_PWR_STATUS) == WPI_GPIO_PWR_SLEEP)
		return;	/* already asleep */

	return 0;
		if (WPI_READ(sc, WPI_RESET) & WPI_MASTER_DISABLED)
			break;
		DELAY(10);
	}
	if (ntries == 100) {
		device_printf(sc->sc_dev, "timeout waiting for master\n");
	}
}

static int
wpi_key_alloc(struct ieee80211vap *vap, struct ieee80211_key *k,
    ieee80211_keyix *keyix, ieee80211_keyix *rxkeyix)
{
	struct ifnet *ifp = vap->iv_ifp;
	struct wpi_softc *sc = ifp->if_softc;

	if (!(&vap->iv_nw_keys[0] <= k &&
	    k < &vap->iv_nw_keys[IEEE80211_WEP_NKID])) {
		if (k->wk_flags & IEEE80211_KEY_GROUP) {
			/* should not happen */
			DPRINTF(sc, WPI_DEBUG_KEY, "%s: bogus group key\n",
			    __func__);
			return 0;
		}
		*keyix = 0;	/* NB: use key index 0 for ucast key */
	} else {
		*keyix = *rxkeyix = k - vap->iv_nw_keys;

		if (k->wk_cipher->ic_cipher == IEEE80211_CIPHER_AES_CCM)
			k->wk_flags |= IEEE80211_KEY_SWCRYPT;
			break;
		DELAY(10);
	}
	return 1;
		device_printf(sc->sc_dev,
		    "timeout waiting for NIC to power up\n");
		return ETIMEDOUT;
	}
	return 0;
}

static int
wpi_key_set(struct ieee80211vap *vap, const struct ieee80211_key *k,
    const uint8_t mac[IEEE80211_ADDR_LEN])
{
	const struct ieee80211_cipher *cip = k->wk_cipher;
	struct ieee80211com *ic = vap->iv_ic;
	struct ieee80211_node *ni = vap->iv_bss;
	struct wpi_softc *sc = ic->ic_ifp->if_softc;
	struct wpi_node *wn = (void *)ni;
	struct wpi_node_info node;
	uint16_t kflags;
	int error;

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);
	    ("Resetting the card - clearing any uploaded firmware\n"));

	switch (cip->ic_cipher) {
	case IEEE80211_CIPHER_AES_CCM:
		if (k->wk_flags & IEEE80211_KEY_GROUP)
			return 1;

		kflags = WPI_KFLAG_CCMP;
		break;
	default:
		/* null_key_set() */
		return 1;
	}

	if (wn->id == WPI_ID_UNDEFINED)
		return 0;

	kflags |= WPI_KFLAG_KID(k->wk_keyix);
	if (k->wk_flags & IEEE80211_KEY_GROUP)
		kflags |= WPI_KFLAG_MULTICAST;

	memset(&node, 0, sizeof node);
	node.id = wn->id;
	node.control = WPI_NODE_UPDATE;
	node.flags = WPI_FLAG_KEY_SET;
	node.kflags = htole16(kflags);
	memcpy(node.key, k->wk_key, k->wk_keylen);
	if (ntries == 25000) {
		device_printf(sc->sc_dev,
		    "timeout waiting for clock stabilization\n");
		return ETIMEDOUT;
	}

	DPRINTF(sc, WPI_DEBUG_KEY, "set key id=%d for node %d\n", k->wk_keyix,
	    node.id);

	error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1);
	if (error != 0) {
		device_printf(sc->sc_dev, "can't update node info, error %d\n",
		    error);
		return 0;
	}
	WPI_WRITE(sc, WPI_EEPROM_STATUS, tmp & ~WPI_EEPROM_LOCKED);

	return 1;
}

static int
wpi_key_delete(struct ieee80211vap *vap, const struct ieee80211_key *k)
{
	const struct ieee80211_cipher *cip = k->wk_cipher;
	struct ieee80211com *ic = vap->iv_ic;
	struct ieee80211_node *ni = vap->iv_bss;
	struct wpi_softc *sc = ic->ic_ifp->if_softc;
	struct wpi_node *wn = (void *)ni;
	struct wpi_node_info node;

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);
	hw = WPI_READ(sc, WPI_HWCONFIG);

	switch (cip->ic_cipher) {
	case IEEE80211_CIPHER_AES_CCM:
		break;
	default:
		/* null_key_delete() */
		return 1;
	}

	if (vap->iv_state != IEEE80211_S_RUN ||
	    (k->wk_flags & IEEE80211_KEY_GROUP))
		return 1; /* Nothing to do. */

	memset(&node, 0, sizeof node);
	node.id = wn->id;
	node.control = WPI_NODE_UPDATE;
	node.flags = WPI_FLAG_KEY_SET;

	DPRINTF(sc, WPI_DEBUG_KEY, "delete keys for node %d\n", node.id);
	(void)wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1);

	return 1;
}

/*
 * This function is called after the runtime firmware notifies us of its
 * readiness (called in a process context).
 */
static int
wpi_post_alive(struct wpi_softc *sc)
{
	int ntries, error;
	struct ieee80211com *ic = ifp->if_l2com;
	struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
	int ntries;

	/* Check (again) that the radio is not disabled. */
	if ((error = wpi_nic_lock(sc)) != 0)
		return error;

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);

	/* NB: Runtime firmware must be up and running. */
	if (!(wpi_prph_read(sc, WPI_APMG_RFKILL) & 1)) {
 		device_printf(sc->sc_dev,
		    "RF switch: radio disabled (%s)\n", __func__);
		wpi_nic_unlock(sc);
		return EPERM;   /* :-) */
	}
	wpi_nic_unlock(sc);

	/* Wait for thermal sensor to calibrate. */
	for (ntries = 0; ntries < 1000; ntries++) {
		if ((sc->temp = (int)WPI_READ(sc, WPI_UCODE_GP2)) != 0)
			break;
		DELAY(10);
	}


	if (ntries == 1000) {
		device_printf(sc->sc_dev,
		    "timeout waiting for thermal sensor calibration\n");
                return ETIMEDOUT;
        }
	DPRINTFN(WPI_DEBUG_TEMP,("temperature %d\n", sc->temp));

        DPRINTF(sc, WPI_DEBUG_TEMP, "temperature %d\n", sc->temp);
        return 0;
}
	}

/*
 * The firmware boot code is small and is intended to be copied directly into
 * the NIC internal memory (no DMA transfer).
 */
static int
wpi_load_bootcode(struct wpi_softc *sc, const uint8_t *ucode, int size)
{
	int error, ntries;

	DPRINTF(sc, WPI_DEBUG_HW, "Loading microcode size 0x%x\n", size);

	size /= sizeof (uint32_t);

	if ((error = wpi_nic_lock(sc)) != 0)
		return error;

	/* Copy microcode image into NIC memory. */
	wpi_prph_write_region_4(sc, WPI_BSM_SRAM_BASE,
	    (const uint32_t *)ucode, size);

	wpi_prph_write(sc, WPI_BSM_WR_MEM_SRC, 0);
	wpi_prph_write(sc, WPI_BSM_WR_MEM_DST, WPI_FW_TEXT_BASE);
	wpi_prph_write(sc, WPI_BSM_WR_DWCOUNT, size);

	/* Start boot load now. */
	wpi_prph_write(sc, WPI_BSM_WR_CTRL, WPI_BSM_WR_CTRL_START);

	/* Wait for transfer to complete. */
	for (ntries = 0; ntries < 1000; ntries++) {
		uint32_t status = WPI_READ(sc, WPI_FH_TX_STATUS);
		DPRINTF(sc, WPI_DEBUG_HW,
		    "firmware status=0x%x, val=0x%x, result=0x%x\n", status,
		    WPI_FH_TX_STATUS_IDLE(6),
		    status & WPI_FH_TX_STATUS_IDLE(6));
		if (status & WPI_FH_TX_STATUS_IDLE(6)) {
			DPRINTF(sc, WPI_DEBUG_HW,
			    "Status Match! - ntries = %d\n", ntries);
			break;
		}
		DELAY(10);
	}
	if (ntries == 1000) {
		device_printf(sc->sc_dev, "%s: could not load boot firmware\n",
		    __func__);
		wpi_nic_unlock(sc);
		return ETIMEDOUT;
	}

	/* Enable boot after power up. */
	wpi_prph_write(sc, WPI_BSM_WR_CTRL, WPI_BSM_WR_CTRL_START_EN);

	wpi_nic_unlock(sc);
	return 0;
}

static int
wpi_load_firmware(struct wpi_softc *sc)
{
	struct wpi_fw_info *fw = &sc->fw;
	struct wpi_dma_info *dma = &sc->fw_dma;
	int error;

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);
	(void)wpi_reset(sc);

	/* 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 + WPI_FW_DATA_MAXSZ, fw->init.text, fw->init.textsz);
	bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE);
	wpi_mem_unlock(sc);

	/* Tell adapter where to find initialization sections. */
	if ((error = wpi_nic_lock(sc)) != 0)
		return error;
	wpi_prph_write(sc, WPI_BSM_DRAM_DATA_ADDR, dma->paddr);
	wpi_prph_write(sc, WPI_BSM_DRAM_DATA_SIZE, fw->init.datasz);
	wpi_prph_write(sc, WPI_BSM_DRAM_TEXT_ADDR,
	    dma->paddr + WPI_FW_DATA_MAXSZ);
	wpi_prph_write(sc, WPI_BSM_DRAM_TEXT_SIZE, fw->init.textsz);
	wpi_nic_unlock(sc);

	/* Load firmware boot code. */
	error = wpi_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;
	}
	wpi_mem_unlock(sc);

	/* Now press "execute". */
	WPI_WRITE(sc, WPI_RESET, 0);
	wpi_mem_write(sc, WPI_MEM_MODE, 2); /* bypass mode */
	wpi_mem_write(sc, WPI_MEM_RA, 1);   /* enable RA0 */
	wpi_mem_write(sc, WPI_MEM_TXCFG, 0x3f); /* enable all 6 Tx rings */
	wpi_mem_write(sc, WPI_MEM_BYPASS1, 0x10000);
	wpi_mem_write(sc, WPI_MEM_BYPASS2, 0x30002);
	wpi_mem_write(sc, WPI_MEM_MAGIC4, 4);
	wpi_mem_write(sc, WPI_MEM_MAGIC5, 5);

	/* Wait at most one second for first alive notification. */
	if ((error = msleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) {
		device_printf(sc->sc_dev,
		    "%s: timeout waiting for adapter to initialize, error %d\n",
		    __func__, error);
		return error;
		WPI_WRITE(sc, WPI_TX_CONFIG(qid), 0x80200008);
	}
	wpi_mem_unlock(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 + WPI_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 = wpi_nic_lock(sc)) != 0)
		return error;
	wpi_prph_write(sc, WPI_BSM_DRAM_DATA_ADDR, dma->paddr);
	wpi_prph_write(sc, WPI_BSM_DRAM_DATA_SIZE, fw->main.datasz);
	wpi_prph_write(sc, WPI_BSM_DRAM_TEXT_ADDR,
	    dma->paddr + WPI_FW_DATA_MAXSZ);
	wpi_prph_write(sc, WPI_BSM_DRAM_TEXT_SIZE,
	    WPI_FW_UPDATED | fw->main.textsz);
	wpi_nic_unlock(sc);

	return 0;
}

static int
wpi_read_firmware(struct wpi_softc *sc)
{
	const struct firmware *fp;
	struct wpi_fw_info *fw = &sc->fw;
	const struct wpi_firmware_hdr *hdr;
	int error;

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);

	DPRINTF(sc, WPI_DEBUG_FIRMWARE,
	    "Attempting Loading Firmware from %s module\n", WPI_FW_NAME);

	WPI_UNLOCK(sc);
	fp = firmware_get(WPI_FW_NAME);
	WPI_LOCK(sc);

	if (fp == NULL) {
		device_printf(sc->sc_dev,
		    "could not load firmware image '%s'\n", WPI_FW_NAME);
		return EINVAL;
	}

	sc->fw_fp = fp;
	 * RF switch is turned off thermal calibration will fail, though
	 * the card is still happy to continue to accept commands, catch
	 * this case and schedule a task to watch for it to be turned on.
	 */
	wpi_mem_lock(sc);
	tmp = wpi_mem_read(sc, WPI_MEM_HW_RADIO_OFF);
	wpi_mem_unlock(sc);

	if (fp->datasize < sizeof (struct wpi_firmware_hdr)) {
		device_printf(sc->sc_dev,
		    "firmware file too short: %zu bytes\n", fp->datasize);
		error = EINVAL;
		goto fail;
	}

	fw->size = fp->datasize;
	fw->data = (const uint8_t *)fp->data;

	/* Extract firmware header information. */
	hdr = (const struct wpi_firmware_hdr *)fw->data;

	/*     |  RUNTIME FIRMWARE   |    INIT FIRMWARE    | BOOT FW  |
	   |HDR|<--TEXT-->|<--DATA-->|<--TEXT-->|<--DATA-->|<--TEXT-->| */

	fw->main.textsz = le32toh(hdr->rtextsz);
	fw->main.datasz = le32toh(hdr->rdatasz);
	fw->init.textsz = le32toh(hdr->itextsz);
	fw->init.datasz = le32toh(hdr->idatasz);
	fw->boot.textsz = le32toh(hdr->btextsz);
	fw->boot.datasz = 0;

	/* Sanity-check firmware header. */
	if (fw->main.textsz > WPI_FW_TEXT_MAXSZ ||
	    fw->main.datasz > WPI_FW_DATA_MAXSZ ||
	    fw->init.textsz > WPI_FW_TEXT_MAXSZ ||
	    fw->init.datasz > WPI_FW_DATA_MAXSZ ||
	    fw->boot.textsz > WPI_FW_BOOT_TEXT_MAXSZ ||
	    (fw->boot.textsz & 3) != 0) {
		device_printf(sc->sc_dev, "invalid firmware header\n");
		error = EINVAL;
		goto fail;
	}

	/* Check that all firmware sections fit. */
	if (fw->size < sizeof (*hdr) + fw->main.textsz + fw->main.datasz +
	    fw->init.textsz + fw->init.datasz + fw->boot.textsz) {
		device_printf(sc->sc_dev,
		    "firmware file too short: %zu bytes\n", fw->size);
		error = EINVAL;
		goto fail;
	}
	DPRINTFN(WPI_DEBUG_TEMP,("temperature %d\n", sc->temp));

	/* Get pointers to firmware sections. */
	fw->main.text = (const uint8_t *)(hdr + 1);
	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;

	DPRINTF(sc, WPI_DEBUG_FIRMWARE,
	    "Firmware Version: Major %d, Minor %d, Driver %d, \n"
	    "runtime (text: %u, data: %u) init (text: %u, data %u) boot (text %u)\n",
	    hdr->major, hdr->minor, le32toh(hdr->driver),
	    fw->main.textsz, fw->main.datasz,
	    fw->init.textsz, fw->init.datasz, fw->boot.textsz);

	DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->main.text %p\n", fw->main.text);
	DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->main.data %p\n", fw->main.data);
	DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->init.text %p\n", fw->init.text);
	DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->init.data %p\n", fw->init.data);
	DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->boot.text %p\n", fw->boot.text);

	return 0;

fail:	wpi_unload_firmware(sc);
	return error;
}

/**
 * Free the referenced firmware image
 */
static void
wpi_unload_firmware(struct wpi_softc *sc)
{
	if (sc->fw_fp != NULL) {
		firmware_put(sc->fw_fp, FIRMWARE_UNLOAD);
		sc->fw_fp = NULL;
	}
}

static int
wpi_clock_wait(struct wpi_softc *sc)
{
	int ntries;

	/* Set "initialization complete" bit. */
	WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_INIT_DONE);

	/* Wait for clock stabilization. */
	for (ntries = 0; ntries < 2500; ntries++) {
		if (WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_MAC_CLOCK_READY)
			return 0;
		DELAY(100);
	}
	device_printf(sc->sc_dev,
	    "%s: timeout waiting for clock stabilization\n", __func__);

	return ETIMEDOUT;
}

static int
wpi_apm_init(struct wpi_softc *sc)
{
	uint32_t reg;
	int error;
	int ac;

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);
	sc->sc_scan_timer = 0;
	ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
	sc->flags &= ~WPI_FLAG_HW_RADIO_OFF;
	callout_stop(&sc->watchdog_to);
	callout_stop(&sc->calib_to);

	/* Disable L0s exit timer (NMI bug workaround). */
	WPI_SETBITS(sc, WPI_GIO_CHICKEN, WPI_GIO_CHICKEN_DIS_L0S_TIMER);
	/* Don't wait for ICH L0s (ICH bug workaround). */
	WPI_SETBITS(sc, WPI_GIO_CHICKEN, WPI_GIO_CHICKEN_L1A_NO_L0S_RX);
	WPI_WRITE(sc, WPI_INTR_STATUS, 0x00070000);

	/* Set FH wait threshold to max (HW bug under stress workaround). */
	WPI_SETBITS(sc, WPI_DBG_HPET_MEM, 0xffff0000);
	wpi_mem_unlock(sc);

	/* Retrieve PCIe Active State Power Management (ASPM). */
	reg = pci_read_config(sc->sc_dev, sc->sc_cap_off + 0x10, 1);
	/* Workaround for HW instability in PCIe L0->L0s->L1 transition. */
	if (reg & 0x02)	/* L1 Entry enabled. */
		WPI_SETBITS(sc, WPI_GIO, WPI_GIO_L0S_ENA);
	else
		WPI_CLRBITS(sc, WPI_GIO, WPI_GIO_L0S_ENA);

	WPI_SETBITS(sc, WPI_ANA_PLL, WPI_ANA_PLL_INIT);
	wpi_reset_rx_ring(sc, &sc->rxq);

	/* Wait for clock stabilization before accessing prph. */
	if ((error = wpi_clock_wait(sc)) != 0)
		return error;

	if ((error = wpi_nic_lock(sc)) != 0)
		return error;
	/* Enable DMA and BSM (Bootstrap State Machine). */
	wpi_prph_write(sc, WPI_APMG_CLK_EN,
	    WPI_APMG_CLK_CTRL_DMA_CLK_RQT | WPI_APMG_CLK_CTRL_BSM_CLK_RQT);
	DELAY(20);
	/* Disable L1-Active. */
	wpi_prph_setbits(sc, WPI_APMG_PCI_STT, WPI_APMG_PCI_STT_L1A_DIS);
	wpi_nic_unlock(sc);

	return 0;
}

static void
wpi_apm_stop_master(struct wpi_softc *sc)
{
	int ntries;

	/* Stop busmaster DMA activity. */
	WPI_SETBITS(sc, WPI_RESET, WPI_RESET_STOP_MASTER);
 	 
	if ((WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_PS_MASK) ==
	    WPI_GP_CNTRL_MAC_PS)
		return; /* Already asleep. */

	for (ntries = 0; ntries < 100; ntries++) {
		if (WPI_READ(sc, WPI_RESET) & WPI_RESET_MASTER_DISABLED)
			return;
		DELAY(10);
	}
	device_printf(sc->sc_dev, "%s: timeout waiting for master\n", __func__);
}

static void
wpi_apm_stop(struct wpi_softc *sc)
{
	wpi_apm_stop_master(sc);

	/* Reset the entire device. */
	WPI_SETBITS(sc, WPI_RESET, WPI_RESET_SW);
	DELAY(10);
	/* Clear "initialization complete" bit. */
	WPI_CLRBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_INIT_DONE);
}

static void
wpi_nic_config(struct wpi_softc *sc)
{
	uint32_t rev;
	struct ifnet *ifp = sc->sc_ifp;
	struct ieee80211com *ic = ifp->if_l2com;
	struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
	int temp;

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);
		return;

	/* voodoo from the Linux "driver".. */
	rev = pci_read_config(sc->sc_dev, PCIR_REVID, 1);
	if ((rev & 0xc0) == 0x40)
		WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_ALM_MB);
	else if (!(rev & 0x80))
		WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_ALM_MM);

	if (sc->cap == 0x80)
		WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_SKU_MRC);

	if ((le16toh(sc->rev) & 0xf0) == 0xd0)
		WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_REV_D);
	else
		WPI_CLRBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_REV_D);

	if (sc->type > 1)
		WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_TYPE_B);
}

static int
wpi_hw_init(struct wpi_softc *sc)
 * power to temperature changes.
 */
static void
wpi_power_calibration(struct wpi_softc *sc, int temp)
{
	int chnl, ntries, error;
	struct ieee80211com *ic = ifp->if_l2com;
	struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__);

	/* Clear pending interrupts. */
	WPI_WRITE(sc, WPI_INT, 0xffffffff);

	if ((error = wpi_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 = wpi_nic_lock(sc)) != 0)
		return error;
	wpi_prph_clrbits(sc, WPI_APMG_PS, WPI_APMG_PS_PWR_SRC_MASK);
	wpi_nic_unlock(sc);
	/* Spin until VMAIN gets selected. */
	for (ntries = 0; ntries < 5000; ntries++) {
		if (WPI_READ(sc, WPI_GPIO_IN) & WPI_GPIO_IN_VMAIN)
			break;
		DELAY(10);
	}
	if (ntries == 5000) {
		device_printf(sc->sc_dev, "timeout selecting power source\n");
		return ETIMEDOUT;
	}

	/* Perform adapter initialization. */
	wpi_nic_config(sc);
		return;

	/* Initialize RX ring. */
	if ((error = wpi_nic_lock(sc)) != 0)
		return error;
	/* Set physical address of RX ring. */
	WPI_WRITE(sc, WPI_FH_RX_BASE, sc->rxq.desc_dma.paddr);
	/* Set physical address of RX read pointer. */
	WPI_WRITE(sc, WPI_FH_RX_RPTR_ADDR, sc->shared_dma.paddr +
	    offsetof(struct wpi_shared, next));
	WPI_WRITE(sc, WPI_FH_RX_WPTR, 0);
	/* Enable RX. */
	WPI_WRITE(sc, WPI_FH_RX_CONFIG,
	    WPI_FH_RX_CONFIG_DMA_ENA |
	    WPI_FH_RX_CONFIG_RDRBD_ENA |
	    WPI_FH_RX_CONFIG_WRSTATUS_ENA |
	    WPI_FH_RX_CONFIG_MAXFRAG |
	    WPI_FH_RX_CONFIG_NRBD(WPI_RX_RING_COUNT_LOG) |
	    WPI_FH_RX_CONFIG_IRQ_DST_HOST |
	    WPI_FH_RX_CONFIG_IRQ_TIMEOUT(1));
	(void)WPI_READ(sc, WPI_FH_RSSR_TBL);	/* barrier */
	wpi_nic_unlock(sc);
	WPI_WRITE(sc, WPI_FH_RX_WPTR, (WPI_RX_RING_COUNT - 1) & ~7);

	/* Initialize TX rings. */
	if ((error = wpi_nic_lock(sc)) != 0)
		return error;
	wpi_prph_write(sc, WPI_ALM_SCHED_MODE, 2);	/* bypass mode */
	wpi_prph_write(sc, WPI_ALM_SCHED_ARASTAT, 1);	/* enable RA0 */
	/* Enable all 6 TX rings. */
	wpi_prph_write(sc, WPI_ALM_SCHED_TXFACT, 0x3f);
	wpi_prph_write(sc, WPI_ALM_SCHED_SBYPASS_MODE1, 0x10000);
	wpi_prph_write(sc, WPI_ALM_SCHED_SBYPASS_MODE2, 0x30002);
	wpi_prph_write(sc, WPI_ALM_SCHED_TXF4MF, 4);
	wpi_prph_write(sc, WPI_ALM_SCHED_TXF5MF, 5);
	/* Set physical address of TX rings. */
	WPI_WRITE(sc, WPI_FH_TX_BASE, sc->shared_dma.paddr);
	WPI_WRITE(sc, WPI_FH_MSG_CONFIG, 0xffff05a5);

	/* Enable all DMA channels. */
	for (chnl = 0; chnl < WPI_NDMACHNLS; chnl++) {
		WPI_WRITE(sc, WPI_FH_CBBC_CTRL(chnl), 0);
		WPI_WRITE(sc, WPI_FH_CBBC_BASE(chnl), 0);
		WPI_WRITE(sc, WPI_FH_TX_CONFIG(chnl), 0x80200008);
	}
	wpi_nic_unlock(sc);
	(void)WPI_READ(sc, WPI_FH_TX_BASE);	/* barrier */

	/* Clear "radio off" and "commands blocked" bits. */
	WPI_WRITE(sc, WPI_UCODE_GP1_CLR, WPI_UCODE_GP1_RFKILL);
	WPI_WRITE(sc, WPI_UCODE_GP1_CLR, WPI_UCODE_GP1_CMD_BLOCKED);

	/* Clear pending interrupts. */
	WPI_WRITE(sc, WPI_INT, 0xffffffff);
	/* Enable interrupts. */
	WPI_WRITE(sc, WPI_INT_MASK, WPI_INT_MASK_DEF);

	/* _Really_ make sure "radio off" bit is cleared! */
	WPI_WRITE(sc, WPI_UCODE_GP1_CLR, WPI_UCODE_GP1_RFKILL);
	WPI_WRITE(sc, WPI_UCODE_GP1_CLR, WPI_UCODE_GP1_RFKILL);

	if ((error = wpi_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, "wpiinit", hz)) != 0) {
		device_printf(sc->sc_dev,
		    "%s: timeout waiting for adapter to initialize, error %d\n",
		    __func__, error);
		return error;
	}

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__);

	/* Do post-firmware initialization. */
	return wpi_post_alive(sc);
}

/**
 * Read the eeprom to find out what channels are valid for the given
 * band and update net80211 with what we find.
 */
static void
wpi_hw_stop(struct wpi_softc *sc)
{
	int chnl, qid, ntries;
	struct ieee80211com *ic = ifp->if_l2com;
	const struct wpi_chan_band *band = &wpi_bands[n];
	struct wpi_eeprom_chan channels[WPI_MAX_CHAN_PER_BAND];
	struct ieee80211_channel *c;
	int chan, i, passive;

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);
	    band->nchan * sizeof (struct wpi_eeprom_chan));

	if (WPI_READ(sc, WPI_UCODE_GP1) & WPI_UCODE_GP1_MAC_SLEEP)
		wpi_nic_lock(sc);
			DPRINTFN(WPI_DEBUG_HW,
			    ("Channel Not Valid: %d, band %d\n",
			     band->chan[i],n));
			continue;
		}

	WPI_WRITE(sc, WPI_RESET, WPI_RESET_NEVO);
		chan = band->chan[i];
		c = &ic->ic_channels[ic->ic_nchans++];

	/* Disable interrupts. */
	WPI_WRITE(sc, WPI_INT_MASK, 0);
	WPI_WRITE(sc, WPI_INT, 0xffffffff);
	WPI_WRITE(sc, WPI_FH_INT, 0xffffffff);

	/* Make sure we no longer hold the NIC lock. */
	wpi_nic_unlock(sc);
			c->ic_freq = ieee80211_ieee2mhz(chan,
			    IEEE80211_CHAN_2GHZ);
			c->ic_flags = IEEE80211_CHAN_B | passive;

	if (wpi_nic_lock(sc) == 0) {
		/* Stop TX scheduler. */
		wpi_prph_write(sc, WPI_ALM_SCHED_MODE, 0);
		wpi_prph_write(sc, WPI_ALM_SCHED_TXFACT, 0);
			c->ic_flags = IEEE80211_CHAN_G | passive;

		/* Stop all DMA channels. */
		for (chnl = 0; chnl < WPI_NDMACHNLS; chnl++) {
			WPI_WRITE(sc, WPI_FH_TX_CONFIG(chnl), 0);
			for (ntries = 0; ntries < 200; ntries++) {
				if (WPI_READ(sc, WPI_FH_TX_STATUS) &
				    WPI_FH_TX_STATUS_IDLE(chnl))
					break;
				DELAY(10);
			}
				continue;

			c->ic_ieee = chan;
			c->ic_freq = ieee80211_ieee2mhz(chan,
			    IEEE80211_CHAN_5GHZ);
			c->ic_flags = IEEE80211_CHAN_A | passive;
		}
		wpi_nic_unlock(sc);
	}

	/* Stop RX ring. */
	wpi_reset_rx_ring(sc);

	/* Reset all TX rings. */
	for (qid = 0; qid < WPI_NTXQUEUES; qid++)
		wpi_reset_tx_ring(sc, &sc->txq[qid]);
		//ic->ic_channels[chan].ic_minpower...
		//ic->ic_channels[chan].ic_maxregtxpower...
#endif

	if (wpi_nic_lock(sc) == 0) {
		wpi_prph_write(sc, WPI_APMG_CLK_DIS,
		    WPI_APMG_CLK_CTRL_DMA_CLK_RQT);
		wpi_nic_unlock(sc);
		    ic->ic_nchans));
	}
	DELAY(5);
	/* Power OFF adapter. */
	wpi_apm_stop(sc);
}

static void
wpi_radio_on(void *arg0, int pending)
{
	struct wpi_softc *sc = arg0;
	struct ifnet *ifp = sc->sc_ifp;
	struct ieee80211com *ic = ifp->if_l2com;
	struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);

	device_printf(sc->sc_dev, "RF switch: radio enabled\n");
	    sizeof rgroup);

	if (vap != NULL) {
		wpi_init(sc);
		ieee80211_init(vap);
	}
	group->temp   = (int16_t)le16toh(rgroup.temp);

	if (WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_RFKILL) {
		WPI_LOCK(sc);
		callout_stop(&sc->watchdog_rfkill);
		WPI_UNLOCK(sc);
		group->samples[i].index = rgroup.samples[i].index;
		group->samples[i].power = rgroup.samples[i].power;

		DPRINTF(("\tsample %d: index=%d power=%d\n", i,
			    group->samples[i].index, group->samples[i].power));
	}
}

static void
wpi_radio_off(void *arg0, int pending)
 */
static int
wpi_set_txpower(struct wpi_softc *sc, struct ieee80211_channel *c, int async)
{
	struct wpi_softc *sc = arg0;
	struct ifnet *ifp = sc->sc_ifp;
	struct ieee80211com *ic = ifp->if_l2com;
	struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
	struct wpi_cmd_txpower txpower;
	u_int chan;
	int i;

	device_printf(sc->sc_dev, "RF switch: radio disabled\n");
	chan = ieee80211_chan2ieee(ic, c);

	wpi_stop(sc);
	if (vap != NULL)
		ieee80211_stop(vap);
			if (chan <= group->chan)
				break;
	} else
		group = &sc->groups[0];

	callout_reset(&sc->watchdog_rfkill, hz, wpi_watchdog_rfkill, sc);
}
	txpower.channel = htole16(chan);

static void
wpi_init_locked(struct wpi_softc *sc)
{
	struct ifnet *ifp = sc->sc_ifp;
	int error;

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__);

	WPI_LOCK_ASSERT(sc);

	/* Check that the radio is not disabled by hardware switch. */
	if (!(WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_RFKILL)) {
		device_printf(sc->sc_dev,
		    "RF switch: radio disabled (%s)\n", __func__);
		callout_reset(&sc->watchdog_rfkill, hz, wpi_watchdog_rfkill,
		    sc);
		return;
	}

	/* Read firmware images from the filesystem. */
	if ((error = wpi_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 = wpi_hw_init(sc);
	wpi_unload_firmware(sc);
	if (error != 0) {
		device_printf(sc->sc_dev,
		    "%s: could not initialize hardware, error %d\n", __func__,
		    error);
		goto fail;
	}
/* fixed-point arithmetic division using a n-bit fractional part */
#define fdivround(a, b, n)      \
	((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n))

	/* Configure adapter now that it is ready. */
	if ((error = wpi_config(sc)) != 0) {
		device_printf(sc->sc_dev,
		    "%s: could not configure device, error %d\n", __func__,
		    error);
		goto fail;
	}

	ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
	ifp->if_drv_flags |= IFF_DRV_RUNNING;
	struct wpi_power_sample *sample;
	int pwr, idx;
	u_int chan;

	callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc);
	chan = ieee80211_chan2ieee(ic, c);

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__);
	pwr = group->maxpwr / 2;

	return;
	switch (rate) {
		case 72:	/* 36Mb/s */
			pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 0 :  5;
			break;
		case 96:	/* 48Mb/s */
			pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 7 : 10;
			break;
		case 108:	/* 54Mb/s */
			pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 9 : 12;
			break;
	}

fail:	wpi_stop_locked(sc);
	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__);
}

static void
wpi_init(void *arg)
{
	struct wpi_softc *sc = arg;
	struct ifnet *ifp = sc->sc_ifp;
	struct ieee80211com *ic = ifp->if_l2com;
	    sample[1].power, sample[1].index, 19);

	WPI_LOCK(sc);
	wpi_init_locked(sc);
	WPI_UNLOCK(sc);
	 *	- if warmer than factory-calibrated: increase output power
	 */
	idx -= (sc->temp - group->temp) * 11 / 100;

	if (ifp->if_drv_flags & IFF_DRV_RUNNING)
		ieee80211_start_all(ic);
}

static void
wpi_stop_locked(struct wpi_softc *sc)
{
	struct ifnet *ifp = sc->sc_ifp;
		return WPI_MAX_PWR_INDEX;
	return idx;

	WPI_LOCK_ASSERT(sc);

	sc->sc_scan_timer = 0;
	sc->sc_tx_timer = 0;
	callout_stop(&sc->watchdog_to);
	callout_stop(&sc->calib_to);
	ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);

	/* Power OFF hardware. */
	wpi_hw_stop(sc);
}

static void
wpi_stop(struct wpi_softc *sc)
{
	WPI_LOCK(sc);
	wpi_stop_locked(sc);
	WPI_UNLOCK(sc);
}

/*
 * Callback from net80211 to start a scan.
 */
static void
wpi_scan_start(struct ieee80211com *ic)

	WPI_UNLOCK(sc);
}

/*
 * Callback from net80211 to terminate a scan.
 * scan has ended. If there is a scan in progress on the card
 * then it should be aborted.
 */
static void
wpi_scan_end(struct ieee80211com *ic)
{
	struct ifnet *ifp = ic->ic_ifp;
	struct wpi_softc *sc = ifp->if_softc;
	struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);

	if (vap->iv_state == IEEE80211_S_RUN) {
		WPI_LOCK(sc);
		wpi_set_led(sc, WPI_LED_LINK, 0, 1);
		WPI_UNLOCK(sc);
	}
}

/**

static void
wpi_set_channel(struct ieee80211com *ic)
{
	const struct ieee80211_channel *c = ic->ic_curchan;
	struct ifnet *ifp = ic->ic_ifp;
	struct wpi_softc *sc = ifp->if_softc;
	int error;

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);

	WPI_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) {
		sc->rxon.chan = ieee80211_chan2ieee(ic, c);
		if (IEEE80211_IS_CHAN_2GHZ(c)) {
			sc->rxon.flags |= htole32(WPI_RXON_AUTO |
			    WPI_RXON_24GHZ);
		} else {
			sc->rxon.flags &= ~htole32(WPI_RXON_AUTO |
			    WPI_RXON_24GHZ);
		}
		if ((error = wpi_send_rxon(sc, 0, 0)) != 0)
			device_printf(sc->sc_dev,
			    "%s: error %d settting channel\n", __func__,
			    error);
	}
	WPI_UNLOCK(sc);
}

/**

wpi_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell)
{
	struct ieee80211vap *vap = ss->ss_vap;
	struct ieee80211com *ic = vap->iv_ic;
	struct ifnet *ifp = ic->ic_ifp;
	struct wpi_softc *sc = ifp->if_softc;
	int error;

	if (sc->rxon.chan != ieee80211_chan2ieee(ic, ic->ic_curchan)) {
		WPI_LOCK(sc);
		error = wpi_scan(sc, ic->ic_curchan);
		WPI_UNLOCK(sc);
		if (error != 0)
			ieee80211_cancel_scan(vap);
	} else {
		/* Send probe request when associated. */
		sc->sc_scan_curchan(ss, maxdwell);
	}
}

/**

}

static void
wpi_hw_reset(void *arg, int pending)
{
	struct wpi_softc *sc = arg;

	WPI_LOCK(sc);
	wpi_init_locked(sc, 0);
	WPI_UNLOCK(sc);
}

static void
wpi_rfreset(void *arg, int pending)
{
	struct wpi_softc *sc = arg;

	WPI_LOCK(sc);
	wpi_rfkill_resume(sc);
	WPI_UNLOCK(sc);
}

/*
 * Allocate DMA-safe memory for firmware transfer.
 */
static int
wpi_alloc_fwmem(struct wpi_softc *sc)
{
	/* allocate enough contiguous space to store text and data */
	return wpi_dma_contig_alloc(sc, &sc->fw_dma, NULL,
	    WPI_FW_MAIN_TEXT_MAXSZ + WPI_FW_MAIN_DATA_MAXSZ, 1,
	    BUS_DMA_NOWAIT);
}

static void
wpi_free_fwmem(struct wpi_softc *sc)
{
	wpi_dma_contig_free(&sc->fw_dma);
}

/**
 * Called every second, wpi_watchdog used by the watch dog timer
 * to check that the card is still alive
 */
static void
wpi_watchdog(void *arg)
{
	struct wpi_softc *sc = arg;
	struct ifnet *ifp = sc->sc_ifp;
	struct ieee80211com *ic = ifp->if_l2com;
	struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);

	DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);

	wpi_stop(sc);
	if (vap != NULL)
		ieee80211_stop(vap);
	wpi_init(sc);
	if (vap != NULL)
		ieee80211_init(vap);
			callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc);
			return;
		}

		device_printf(sc->sc_dev, "Hardware Switch Enabled\n");
		ieee80211_runtask(ic, &sc->sc_radiotask);
		return;
	}

	if (sc->sc_tx_timer > 0) {
		if (--sc->sc_tx_timer == 0) {
			device_printf(sc->sc_dev,"device timeout\n");
			if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
			ieee80211_runtask(ic, &sc->sc_restarttask);
		}
	}
	if (sc->sc_scan_timer > 0) {
		struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
		if (--sc->sc_scan_timer == 0 && vap != NULL) {
			device_printf(sc->sc_dev,"scan timeout\n");
			ieee80211_cancel_scan(vap);
			ieee80211_runtask(ic, &sc->sc_restarttask);
		}
	}

	if (ifp->if_drv_flags & IFF_DRV_RUNNING)
		callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc);
}

#ifdef WPI_DEBUG
static const char *wpi_cmd_str(int cmd)
{
	switch (cmd) {
	case WPI_DISABLE_CMD:	return "WPI_DISABLE_CMD";
	case WPI_CMD_CONFIGURE:	return "WPI_CMD_CONFIGURE";
	case WPI_CMD_ASSOCIATE:	return "WPI_CMD_ASSOCIATE";
	case WPI_CMD_SET_WME:	return "WPI_CMD_SET_WME";
	case WPI_CMD_TSF:	return "WPI_CMD_TSF";
	case WPI_CMD_ADD_NODE:	return "WPI_CMD_ADD_NODE";
	case WPI_CMD_TX_DATA:	return "WPI_CMD_TX_DATA";
	case WPI_CMD_MRR_SETUP:	return "WPI_CMD_MRR_SETUP";
	case WPI_CMD_SET_LED:	return "WPI_CMD_SET_LED";
	case WPI_CMD_SET_POWER_MODE: return "WPI_CMD_SET_POWER_MODE";
	case WPI_CMD_SCAN:	return "WPI_CMD_SCAN";
	case WPI_CMD_SET_BEACON:return "WPI_CMD_SET_BEACON";
	case WPI_CMD_TXPOWER:	return "WPI_CMD_TXPOWER";
	case WPI_CMD_BLUETOOTH:	return "WPI_CMD_BLUETOOTH";

	default:
		KASSERT(1, ("Unknown Command: %d\n", cmd));
		return "UNKNOWN CMD";	/* Make the compiler happy */
	}
}
#endif

MODULE_DEPEND(wpi, pci,  1, 1, 1);
MODULE_DEPEND(wpi, wlan, 1, 1, 1);
MODULE_DEPEND(wpi, firmware, 1, 1, 1);




/*-
 * Copyright (c) 2006,2007
 *	Damien Bergamini <damien.bergamini@free.fr>
 *	Benjamin Close <Benjamin.Close@clearchain.com>
 *
 * 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.
 *
 * $FreeBSD$
 */

#ifndef __IF_WPI_DEBUG_H__
#define __IF_WPI_DEBUG_H__

#ifdef WPI_DEBUG
enum {
	WPI_DEBUG_XMIT		= 0x00000001,	/* basic xmit operation */
	WPI_DEBUG_RECV		= 0x00000002,	/* basic recv operation */
	WPI_DEBUG_STATE		= 0x00000004,	/* 802.11 state transitions */
	WPI_DEBUG_HW		= 0x00000008,	/* Stage 1 (eeprom) debugging */
	WPI_DEBUG_RESET		= 0x00000010,	/* reset processing */
	WPI_DEBUG_FIRMWARE	= 0x00000020,	/* firmware(9) loading debug */
	WPI_DEBUG_BEACON	= 0x00000040,	/* beacon handling */
	WPI_DEBUG_WATCHDOG	= 0x00000080,	/* watchdog timeout */
	WPI_DEBUG_INTR		= 0x00000100,	/* ISR */
	WPI_DEBUG_SCAN		= 0x00000200,	/* Scan related operations */
	WPI_DEBUG_NOTIFY	= 0x00000400,	/* State 2 Notif intr debug */
	WPI_DEBUG_TEMP		= 0x00000800,	/* TXPower/Temp Calibration */
	WPI_DEBUG_CMD		= 0x00001000,	/* cmd submission */
	WPI_DEBUG_TRACE		= 0x00002000,	/* Print begin and start driver function */
	WPI_DEBUG_PWRSAVE	= 0x00004000,	/* Power save operations */
	WPI_DEBUG_EEPROM	= 0x00008000,	/* EEPROM info */
	WPI_DEBUG_KEY		= 0x00010000,	/* node key management */
	WPI_DEBUG_EDCA		= 0x00020000,	/* WME info */
	WPI_DEBUG_ANY		= 0xffffffff
};

#define DPRINTF(sc, m, ...) do {		\
	if (sc->sc_debug & (m))			\
		printf(__VA_ARGS__);		\
} while (0)

#define TRACE_STR_BEGIN		"->%s: begin\n"
#define TRACE_STR_DOING		"->Doing %s\n"
#define TRACE_STR_END		"->%s: end\n"
#define TRACE_STR_END_ERR	"->%s: end in error\n"

static const char *wpi_cmd_str(int cmd)
{
	switch (cmd) {
	/* Notifications */
	case WPI_UC_READY:		return "UC_READY";
	case WPI_RX_DONE:		return "RX_DONE";
	case WPI_START_SCAN:		return "START_SCAN";
	case WPI_SCAN_RESULTS:		return "SCAN_RESULTS";
	case WPI_STOP_SCAN:		return "STOP_SCAN";
	case WPI_BEACON_SENT:		return "BEACON_SENT";
	case WPI_RX_STATISTICS:		return "RX_STATS";
	case WPI_BEACON_STATISTICS:	return "BEACON_STATS";
	case WPI_STATE_CHANGED:		return "STATE_CHANGED";
	case WPI_BEACON_MISSED:		return "BEACON_MISSED";

	/* Command notifications */
	case WPI_CMD_RXON:		return "WPI_CMD_RXON";
	case WPI_CMD_RXON_ASSOC:	return "WPI_CMD_RXON_ASSOC";
	case WPI_CMD_EDCA_PARAMS:	return "WPI_CMD_EDCA_PARAMS";
	case WPI_CMD_TIMING:		return "WPI_CMD_TIMING";
	case WPI_CMD_ADD_NODE:		return "WPI_CMD_ADD_NODE";
	case WPI_CMD_DEL_NODE:		return "WPI_CMD_DEL_NODE";
	case WPI_CMD_TX_DATA:		return "WPI_CMD_TX_DATA";
	case WPI_CMD_MRR_SETUP:		return "WPI_CMD_MRR_SETUP";
	case WPI_CMD_SET_LED:		return "WPI_CMD_SET_LED";
	case WPI_CMD_SET_POWER_MODE:	return "WPI_CMD_SET_POWER_MODE";
	case WPI_CMD_SCAN:		return "WPI_CMD_SCAN";
	case WPI_CMD_SET_BEACON:	return "WPI_CMD_SET_BEACON";
	case WPI_CMD_TXPOWER:		return "WPI_CMD_TXPOWER";
	case WPI_CMD_BT_COEX:		return "WPI_CMD_BT_COEX";

	default:
		KASSERT(1, ("Unknown Command: %d\n", cmd));
		return "UNKNOWN CMD";
	}
}

#else
#define DPRINTF(sc, m, ...)	do { (void) sc; } while (0)
#endif

#endif	/* __IF_WPI_DEBUG_H__ */




 */

#define WPI_TX_RING_COUNT	256
#define WPI_TX_RING_LOMARK	192
#define WPI_TX_RING_HIMARK	224
#define WPI_RX_RING_COUNT_LOG	6
#define WPI_RX_RING_COUNT	(1 << WPI_RX_RING_COUNT_LOG)

#define WPI_NTXQUEUES		8
#define WPI_NDMACHNLS		6

/* Maximum scatter/gather. */
#define WPI_MAX_SCATTER	4

/*
 * Rings must be aligned on a 16K boundary.
 */
#define WPI_RING_DMA_ALIGN	0x4000

/* Maximum Rx buffer size. */
#define WPI_MAX_SCATTER	4

/* maximum Rx buffer size */
#define WPI_RBUF_SIZE ( 3 * 1024 ) /* XXX 3000 but must be aligned */

/*
 * Control and status registers.
 */
#define WPI_HW_IF_CONFIG	0x000
#define WPI_INT			0x008
#define WPI_INT_MASK		0x00c
#define WPI_FH_INT		0x010
#define WPI_GPIO_IN		0x018
#define WPI_RESET		0x020
#define WPI_GP_CNTRL		0x024
#define WPI_EEPROM		0x02c
#define WPI_EEPROM_GP		0x030
#define WPI_GIO			0x03c
#define WPI_UCODE_GP1		0x054
#define WPI_UCODE_GP1_SET	0x058
#define WPI_UCODE_GP1_CLR	0x05c
#define WPI_UCODE_GP2		0x060
#define WPI_GIO_CHICKEN		0x100
#define WPI_ANA_PLL		0x20c
#define WPI_DBG_HPET_MEM	0x240
#define WPI_MEM_RADDR		0x40c
#define WPI_MEM_WADDR		0x410
#define WPI_MEM_WDATA		0x418
#define WPI_MEM_RDATA		0x41c
#define WPI_PRPH_WADDR		0x444
#define WPI_PRPH_RADDR		0x448
#define WPI_PRPH_WDATA		0x44c
#define WPI_PRPH_RDATA		0x450
#define WPI_HBUS_TARG_WRPTR	0x460
#define WPI_RX_CTL		0xcc0
#define WPI_RX_STATUS		0xcc4
#define WPI_TX_CONFIG(qid)	(0xd00 + (qid) * 32)
#define WPI_TX_CREDIT(qid)	(0xd04 + (qid) * 32)
#define WPI_TX_STATE(qid)	(0xd08 + (qid) * 32)
#define WPI_TX_BASE_PTR		0xe80
#define WPI_MSG_CONFIG		0xe88
#define WPI_TX_STATUS		0xe90

/*
 * Flow-Handler registers.
 */
#define WPI_FH_CBBC_CTRL(qid)	(0x940 + (qid) * 8)
#define WPI_FH_CBBC_BASE(qid)	(0x944 + (qid) * 8)
#define WPI_FH_RX_CONFIG	0xc00
#define WPI_FH_RX_BASE		0xc04
#define WPI_FH_RX_WPTR		0xc20
#define WPI_FH_RX_RPTR_ADDR	0xc24
#define WPI_FH_RSSR_TBL		0xcc0
#define WPI_FH_RX_STATUS	0xcc4
#define WPI_FH_TX_CONFIG(qid)	(0xd00 + (qid) * 32)
#define WPI_FH_TX_BASE		0xe80
#define WPI_FH_MSG_CONFIG	0xe88
#define WPI_FH_TX_STATUS	0xe90


/*
 * NIC internal memory offsets.
 */
#define WPI_ALM_SCHED_MODE		0x2e00
#define WPI_ALM_SCHED_ARASTAT		0x2e04
#define WPI_ALM_SCHED_TXFACT		0x2e10
#define WPI_ALM_SCHED_TXF4MF		0x2e14
#define WPI_ALM_SCHED_TXF5MF		0x2e20
#define WPI_ALM_SCHED_SBYPASS_MODE1	0x2e2c
#define WPI_ALM_SCHED_SBYPASS_MODE2	0x2e30
#define WPI_APMG_CLK_EN			0x3004
#define WPI_APMG_CLK_DIS		0x3008
#define WPI_APMG_PS			0x300c
#define WPI_APMG_PCI_STT		0x3010
#define WPI_APMG_RFKILL			0x3014
#define WPI_BSM_WR_CTRL			0x3400
#define WPI_BSM_WR_MEM_SRC		0x3404
#define WPI_BSM_WR_MEM_DST		0x3408
#define WPI_BSM_WR_DWCOUNT		0x340c
#define WPI_BSM_DRAM_TEXT_ADDR		0x3490
#define WPI_BSM_DRAM_TEXT_SIZE		0x3494
#define WPI_BSM_DRAM_DATA_ADDR		0x3498
#define WPI_BSM_DRAM_DATA_SIZE		0x349c
#define WPI_BSM_SRAM_BASE		0x3800

#define WPI_MEM_TEXT_BASE	0x3490
#define WPI_MEM_TEXT_SIZE	0x3494
#define WPI_MEM_DATA_BASE	0x3498
#define WPI_MEM_DATA_SIZE	0x349c

/* Possible flags for register WPI_HW_IF_CONFIG. */
#define WPI_HW_IF_CONFIG_ALM_MB		(1 << 8)
#define WPI_HW_IF_CONFIG_ALM_MM		(1 << 9)
#define WPI_HW_IF_CONFIG_SKU_MRC	(1 << 10)
#define WPI_HW_IF_CONFIG_REV_D		(1 << 11)
#define WPI_HW_IF_CONFIG_TYPE_B		(1 << 12)

/* Possible flags for registers WPI_PRPH_RADDR/WPI_PRPH_WADDR. */
#define WPI_PRPH_DWORD	((sizeof (uint32_t) - 1) << 24)
#define WPI_HW_ALM_MM	(1 << 9)
#define WPI_HW_SKU_MRC	(1 << 10)
#define WPI_HW_REV_D	(1 << 11)
#define WPI_HW_TYPE_B	(1 << 12)

/* Possible values for WPI_BSM_WR_MEM_DST. */
#define WPI_FW_TEXT_BASE	0x00000000
#define WPI_FW_DATA_BASE	0x00800000

/* Possible flags for WPI_GPIO_IN. */
#define WPI_GPIO_IN_VMAIN	(1 << 9)

/* Possible flags for register WPI_RESET. */
#define WPI_RESET_NEVO			(1 << 0)
#define WPI_RESET_SW			(1 << 7)
#define WPI_RESET_MASTER_DISABLED	(1 << 8)
#define WPI_RESET_STOP_MASTER		(1 << 9)

/* Possible flags for register WPI_GP_CNTRL. */
#define WPI_GP_CNTRL_MAC_ACCESS_ENA	(1 <<  0)
#define WPI_GP_CNTRL_MAC_CLOCK_READY	(1 <<  0)
#define WPI_GP_CNTRL_INIT_DONE		(1 <<  2)
#define WPI_GP_CNTRL_MAC_ACCESS_REQ	(1 <<  3)
#define WPI_GP_CNTRL_SLEEP		(1 <<  4)
#define WPI_GP_CNTRL_PS_MASK		(7 << 24)
#define WPI_GP_CNTRL_MAC_PS		(4 << 24)
#define WPI_GP_CNTRL_RFKILL		(1 << 27)

/* Possible flags for register WPI_GIO_CHICKEN. */
#define WPI_GIO_CHICKEN_L1A_NO_L0S_RX	(1 << 23)
#define WPI_GIO_CHICKEN_DIS_L0S_TIMER	(1 << 29)
#define WPI_GPIO_MAC		(1 << 3)
#define WPI_GPIO_SLEEP		(1 << 4)
#define WPI_GPIO_PWR_STATUS	0x07000000
#define WPI_GPIO_PWR_SLEEP	(4 << 24)

/* Possible flags for register WPI_GIO. */
#define WPI_GIO_L0S_ENA			(1 << 1)

/* Possible flags for register WPI_FH_RX_CONFIG. */
#define WPI_FH_RX_CONFIG_DMA_ENA	(1U  << 31)
#define WPI_FH_RX_CONFIG_RDRBD_ENA	(1   << 29)
#define WPI_FH_RX_CONFIG_WRSTATUS_ENA	(1   << 27)
#define WPI_FH_RX_CONFIG_MAXFRAG	(1   << 24)
#define WPI_FH_RX_CONFIG_NRBD(x)	((x) << 20)
#define WPI_FH_RX_CONFIG_IRQ_DST_HOST	(1   << 12)
#define WPI_FH_RX_CONFIG_IRQ_TIMEOUT(x)	((x) <<  4)

/* Possible flags for register WPI_ANA_PLL. */
#define WPI_ANA_PLL_INIT	(1 << 24)
#define WPI_DISABLE_CMD		(1 << 2)

/* Possible flags for register WPI_UCODE_GP1*. */
#define WPI_UCODE_GP1_MAC_SLEEP		(1 << 0)
#define WPI_UCODE_GP1_RFKILL		(1 << 1)
#define WPI_UCODE_GP1_CMD_BLOCKED	(1 << 2)

/* Possible flags for register WPI_FH_RX_STATUS. */
#define	WPI_FH_RX_STATUS_IDLE	(1 << 24)
#define WPI_UC_RUN	(1U << 31)

/* Possible flags for register WPI_BSM_WR_CTRL. */
#define WPI_BSM_WR_CTRL_START_EN	(1  << 30)
#define WPI_BSM_WR_CTRL_START		(1U << 31)
#define WPI_SW_ERROR	(1 << 25)
#define WPI_TX_INTR	(1 << 27)
#define WPI_HW_ERROR	(1 << 29)
#define WPI_RX_INTR	(1U << 31)

/* Possible flags for register WPI_INT. */
#define WPI_INT_ALIVE		(1  <<  0)
#define WPI_INT_WAKEUP		(1  <<  1)
#define WPI_INT_SW_RX		(1  <<  3)
#define WPI_INT_SW_ERR		(1  << 25)
#define WPI_INT_FH_TX		(1  << 27)
#define WPI_INT_HW_ERR		(1  << 29)
#define WPI_INT_FH_RX		(1U << 31)

/* Shortcut. */
#define WPI_INT_MASK_DEF					\
	(WPI_INT_SW_ERR | WPI_INT_HW_ERR | WPI_INT_FH_TX  |	\
	 WPI_INT_FH_RX  | WPI_INT_ALIVE  | WPI_INT_WAKEUP |	\
	 WPI_INT_SW_RX)

/* Possible flags for register WPI_FH_INT. */
#define WPI_FH_INT_RX_CHNL(x)	(1 << ((x) + 16))
#define WPI_FH_INT_HI_PRIOR	(1 << 30)
/* Shortcuts for the above. */
#define WPI_FH_INT_RX			\
	(WPI_FH_INT_RX_CHNL(0) |	\
	 WPI_FH_INT_RX_CHNL(1) |	\
	 WPI_FH_INT_RX_CHNL(2) |	\
	 WPI_FH_INT_HI_PRIOR)

/* Possible flags for register WPI_FH_TX_STATUS. */
#define WPI_FH_TX_STATUS_IDLE(qid)	\
	(1 << ((qid) + 24) | 1 << ((qid) + 16))

/* Possible flags for register WPI_EEPROM. */
#define WPI_EEPROM_READ_VALID	(1 << 0)

/* Possible flags for register WPI_EEPROM_GP. */
#define WPI_EEPROM_VERSION	0x00000007
#define WPI_EEPROM_GP_IF_OWNER	0x00000180

/* Possible flags for register WPI_APMG_PS. */
#define WPI_APMG_PS_PWR_SRC_MASK	(3 << 24)

/* Possible flags for registers WPI_APMG_CLK_*. */
#define WPI_APMG_CLK_CTRL_DMA_CLK_RQT	(1 <<  9)
#define WPI_APMG_CLK_CTRL_BSM_CLK_RQT	(1 << 11)

/* Possible flags for register WPI_APMG_PCI_STT. */
#define WPI_APMG_PCI_STT_L1A_DIS	(1 << 11)

struct wpi_shared {
	uint32_t	txbase[8];
	uint32_t	next;


#define WPI_MAX_SEG_LEN	65520
struct wpi_tx_desc {
	uint8_t		reserved1[3];
	uint8_t		nsegs;
#define WPI_PAD32(x)	(roundup2(x, 4) - (x))

	struct {
		uint32_t	addr;
		uint32_t	len;
	} __packed	segs[WPI_MAX_SCATTER];
	uint8_t		reserved2[28];
} __packed;

struct wpi_tx_stat {
	uint8_t		rtsfailcnt;
	uint8_t		ackfailcnt;
	uint8_t		btkillcnt;
	uint8_t		rate;
	uint32_t	duration;
	uint32_t	status;

#define WPI_START_SCAN		130
#define WPI_SCAN_RESULTS	131
#define WPI_STOP_SCAN		132
#define WPI_BEACON_SENT		144
#define WPI_RX_STATISTICS	156
#define WPI_BEACON_STATISTICS	157
#define WPI_STATE_CHANGED	161
#define WPI_BEACON_MISSED	162

	uint8_t		flags;
	uint8_t		idx;

struct wpi_rx_head {
	uint16_t	chan;
	uint16_t	flags;
#define WPI_STAT_FLAG_SHPREAMBLE	(1 << 2)

	uint8_t		reserved;
	uint8_t		plcp;
	uint16_t	len;
} __packed;


#define WPI_RX_NO_OVFL_ERR	(1 << 1)
/* shortcut for the above */
#define WPI_RX_NOERROR		(WPI_RX_NO_CRC_ERR | WPI_RX_NO_OVFL_ERR)
#define WPI_RX_CIPHER_MASK	(7 <<  8)
#define WPI_RX_CIPHER_CCMP	(2 <<  8)
#define WPI_RX_DECRYPT_MASK	(3 << 11)
#define WPI_RX_DECRYPT_OK	(3 << 11)

	uint64_t	tstamp;
	uint32_t	tbeacon;
} __packed;


struct wpi_tx_cmd {
	uint8_t	code;
#define WPI_CMD_RXON		 16
#define WPI_CMD_RXON_ASSOC	 17
#define WPI_CMD_EDCA_PARAMS	 19
#define WPI_CMD_TIMING		 20
#define WPI_CMD_ADD_NODE	 24
#define WPI_CMD_DEL_NODE	 25
#define WPI_CMD_TX_DATA		 28
#define WPI_CMD_MRR_SETUP	 71
#define WPI_CMD_SET_LED		 72

#define WPI_CMD_SCAN		128
#define WPI_CMD_SET_BEACON	145
#define WPI_CMD_TXPOWER		151
#define WPI_CMD_BT_COEX		155
#define WPI_CMD_GET_STATISTICS	156

	uint8_t	flags;
	uint8_t	idx;
	uint8_t	qid;
	uint8_t	data[124];
} __packed;

/* Structure for command WPI_CMD_RXON. */
struct wpi_rxon {
	uint8_t		myaddr[IEEE80211_ADDR_LEN];
	uint16_t	reserved1;
	uint8_t		bssid[IEEE80211_ADDR_LEN];
	uint16_t	reserved2;
	uint8_t		wlap[IEEE80211_ADDR_LEN];
	uint16_t	reserved3;
	uint8_t		mode;
#define WPI_MODE_HOSTAP		1

#define WPI_MODE_IBSS		4
#define WPI_MODE_MONITOR	6

	uint8_t		air;
	uint16_t	reserved4;
	uint8_t		ofdm_mask;
	uint8_t		cck_mask;
	uint16_t	associd;
	uint32_t	flags;
#define WPI_RXON_24GHZ		(1 <<  0)
#define WPI_RXON_CCK		(1 <<  1)
#define WPI_RXON_AUTO		(1 <<  2)
#define WPI_RXON_SHSLOT		(1 <<  4)
#define WPI_RXON_SHPREAMBLE	(1 <<  5)
#define WPI_RXON_NODIVERSITY	(1 <<  7)
#define WPI_RXON_ANTENNA_A	(1 <<  8)
#define WPI_RXON_ANTENNA_B	(1 <<  9)
#define WPI_RXON_TSF		(1 << 15)
#define WPI_RXON_CTS_TO_SELF	(1 << 30)

	uint32_t	filter;
#define WPI_FILTER_PROMISC	(1 << 0)

#define WPI_FILTER_BEACON	(1 << 6)

	uint8_t		chan;
	uint16_t	reserved5;
} __packed;

/* Structure for command WPI_CMD_RXON_ASSOC. */
struct wpi_assoc {
	uint32_t	flags;
	uint32_t	filter;

	uint16_t	reserved;
} __packed;

/* Structure for command WPI_CMD_EDCA_PARAMS. */
struct wpi_edca_params {
	uint32_t	flags;
#define WPI_EDCA_UPDATE	(1 << 0)

	struct {
		uint16_t	cwmin;
		uint16_t	cwmax;
		uint8_t		aifsn;
		uint8_t		reserved;
		uint16_t	txoplimit;
	} __packed	ac[WME_NUM_AC];
} __packed;

/* Structure for command WPI_CMD_TIMING. */
struct wpi_cmd_timing {
	uint64_t	tstamp;
	uint16_t	bintval;
	uint16_t	atim;

	uint16_t	reserved;
} __packed;

/* Structure for command WPI_CMD_ADD_NODE. */
struct wpi_node_info {
	uint8_t		control;
#define WPI_NODE_UPDATE		(1 << 0)

	uint8_t		reserved1[3];
	uint8_t		macaddr[IEEE80211_ADDR_LEN];
	uint16_t	reserved2;
	uint8_t		id;
#define WPI_ID_BSS		0
#define WPI_ID_IBSS_MIN		2
#define WPI_ID_IBSS_MAX		23
#define WPI_ID_BROADCAST	24
#define WPI_ID_UNDEFINED	(uint8_t)-1

	uint8_t		flags;
#define WPI_FLAG_KEY_SET	(1 << 0)

	uint16_t	reserved3;
	uint16_t	kflags;
#define WPI_KFLAG_CCMP		(1 <<  1)
#define WPI_KFLAG_KID(kid)	((kid) << 8)
#define WPI_KFLAG_MULTICAST	(1 << 14)

	uint8_t		tsc2;
	uint8_t		reserved4;
	uint16_t	ttak[5];
	uint16_t	reserved5;
	uint8_t		key[IEEE80211_KEYBUF_SIZE];
	uint32_t	action;
#define WPI_ACTION_SET_RATE	(1 << 2)

	uint32_t	mask;
	uint16_t	tid;
	uint8_t		plcp;
	uint8_t		antenna;
#define WPI_ANTENNA_A		(1 << 6)
#define WPI_ANTENNA_B		(1 << 7)
#define WPI_ANTENNA_BOTH	(WPI_ANTENNA_A | WPI_ANTENNA_B)

	uint8_t		add_imm;
	uint8_t		del_imm;
	uint16_t	add_imm_start;
} __packed;

/* Structure for command WPI_CMD_DEL_NODE. */
struct wpi_cmd_del_node {
	uint8_t		count;
	uint8_t		reserved1[3];
	uint8_t		macaddr[IEEE80211_ADDR_LEN];
	uint16_t	reserved2;
} __packed;

/* Structure for command WPI_CMD_TX_DATA. */
struct wpi_cmd_data {
	uint16_t	len;
	uint16_t	lnext;

#define WPI_TX_NEED_CTS         (1 <<  2)
#define WPI_TX_NEED_ACK		(1 <<  3)
#define WPI_TX_FULL_TXOP	(1 <<  7)
#define WPI_TX_BT_DISABLE	(1 << 12) 	/* bluetooth coexistence */
#define WPI_TX_AUTO_SEQ		(1 << 13)
#define WPI_TX_INSERT_TSTAMP	(1 << 16)

	uint8_t		plcp;
	uint8_t		id;
	uint8_t		tid;
	uint8_t		security;
#define WPI_CIPHER_WEP		1
#define WPI_CIPHER_CCMP		2
#define WPI_CIPHER_TKIP		3
#define WPI_CIPHER_WEP104	9

	uint8_t		key[IEEE80211_KEYBUF_SIZE];
	uint8_t		tkip[IEEE80211_WEP_MICLEN];
	uint32_t	fnext;
	uint32_t	lifetime;
#define WPI_LIFETIME_INFINITE	0xffffffff

	uint8_t		ofdm_mask;
	uint8_t		cck_mask;
	uint8_t		rts_ntries;

	uint8_t		data_ntries;
	uint16_t	timeout;
	uint16_t	txop;
	struct          ieee80211_frame wh;
} __packed;

/* Structure for command WPI_CMD_SET_BEACON. */
struct wpi_cmd_beacon {
	uint16_t	len;
	uint16_t	reserved1;
	uint32_t	flags;	/* same as wpi_cmd_data */
	uint8_t		plcp;
	uint8_t		id;
	uint8_t		reserved2[30];
	uint32_t	lifetime;

	uint16_t	tim;
	uint8_t		timsz;
	uint8_t		reserved4;
	struct		ieee80211_frame wh;
} __packed;

/* Structure for notification WPI_BEACON_MISSED. */
struct wpi_beacon_missed {
    uint32_t consecutive;
    uint32_t total;
    uint32_t expected;

} __packed;


/* Structure for command WPI_CMD_MRR_SETUP. */
#define WPI_RIDX_MAX	11
struct wpi_mrr_setup {
	uint32_t	which;
#define WPI_MRR_CTL	0
#define WPI_MRR_DATA	1

	uint8_t		reserved[3];

	struct {
		uint8_t	plcp;
		uint8_t	flags;
		uint8_t	ntries;
		uint8_t	next;
	} __packed	rates[WPI_RIDX_MAX + 1];
#define WPI_OFDM54	7
#define WPI_CCK1	8
#define WPI_CCK2	9
#define WPI_CCK11	11

	} __attribute__((__packed__))	rates[WPI_CCK11 + 1];
} __packed;

/* Structure for command WPI_CMD_SET_LED. */
struct wpi_cmd_led {
	uint32_t	unit;	/* multiplier (in usecs) */
	uint8_t		which;

	uint8_t		reserved;
} __packed;

/* Structure for command WPI_CMD_SET_POWER_MODE. */
struct wpi_pmgt_cmd {
	uint16_t	flags;
#define WPI_PS_ALLOW_SLEEP	(1 << 0)
#define WPI_PS_NOTIFY		(1 << 1)
#define WPI_PS_SLEEP_OVER_DTIM	(1 << 2)
#define WPI_PS_PCI_PMGT		(1 << 3)

	uint8_t		reserved[2];
	uint32_t	rxtimeout;
	uint32_t	txtimeout;
	uint32_t	intval[5];
} __packed;

/* Structures for command WPI_CMD_SCAN. */
#define WPI_SCAN_MAX_ESSIDS	4
struct wpi_scan_essid {
	uint8_t	id;
	uint8_t	len;
	uint8_t	data[IEEE80211_NWID_LEN];
} __packed;

struct wpi_scan_hdr {
	uint16_t	len;
	uint8_t		reserved1;
	uint8_t		nchan;
	uint16_t	quiet_time;
	uint16_t	quiet_threshold;
	uint16_t	crc_threshold;
	uint16_t	reserved2;
	uint32_t	max_svc;	/* background scans */
	uint32_t	pause_svc;	/* background scans */
	uint32_t	flags;
	uint32_t	filter;

	/* Followed by a struct wpi_cmd_data. */
	/* Followed by an array of 4 structs wpi_scan_essid. */
	/* Followed by probe request body. */
	/* Followed by an array of ``nchan'' structs wpi_scan_chan. */
	uint8_t		rate;
	uint8_t		id;
	uint8_t		tid;
	uint8_t		security;
	uint8_t		key[IEEE80211_KEYBUF_SIZE];
	uint8_t		tkip[IEEE80211_WEP_MICLEN];
	uint32_t	fnext;
	uint32_t	lifetime;
	uint8_t		ofdm_mask;
	uint8_t		cck_mask;
	uint8_t		rts_ntries;
	uint8_t		data_ntries;
	uint16_t	timeout;
	uint16_t	txop;
}	tx __attribute__((__packed__));

#define WPI_SCAN_MAX_ESSIDS	4
	struct {
	    uint8_t		id;
	    uint8_t		esslen;
	    uint8_t		essid[IEEE80211_NWID_LEN];
	}scan_essids[WPI_SCAN_MAX_ESSIDS];
	/* followed by probe request body */
	/* followed by nchan x wpi_scan_chan */
} __packed;

struct wpi_scan_chan {
	uint8_t		flags;
#define WPI_CHAN_ACTIVE		(1 << 0)
#define WPI_CHAN_NPBREQS(x)	(((1 << (x)) - 1) << 1)

	uint8_t		chan;
	uint8_t		rf_gain;
	uint8_t		dsp_gain;
	uint8_t		gain_radio;
	uint8_t		gain_dsp;
	uint16_t	active;		/* msecs */
	uint16_t	passive;	/* msecs */
} __packed;

#define WPI_SCAN_CRC_TH_DEFAULT		htole16(1)
#define WPI_SCAN_CRC_TH_NEVER		htole16(0xffff)
	uint8_t		flags;
	uint8_t		lead;
	uint8_t		kill;
	uint8_t		reserved;
	uint32_t	ack;
	uint32_t	cts;
} __packed;

/* Maximum size of a scan command. */
#define WPI_SCAN_MAXSZ	(MCLBYTES - 4)

#define WPI_ACTIVE_DWELL_TIME_2GHZ	(30)	/* all times in msec */
#define WPI_ACTIVE_DWELL_TIME_5GHZ	(20)
#define WPI_ACTIVE_DWELL_FACTOR_2GHZ	( 3)
#define WPI_ACTIVE_DWELL_FACTOR_5GHZ	( 2)

#define WPI_PASSIVE_DWELL_TIME_2GHZ	( 20)
#define WPI_PASSIVE_DWELL_TIME_5GHZ	( 10)
#define WPI_PASSIVE_DWELL_BASE		(100)

/* Structure for command WPI_CMD_TXPOWER. */
struct wpi_cmd_txpower {
	uint8_t		band;
#define WPI_BAND_5GHZ	0
#define WPI_BAND_2GHZ	1

	uint8_t		band;
#define WPI_RATE_5GHZ	0
#define WPI_RATE_2GHZ	1
	uint8_t		reserved;
	uint16_t	chan;

#define WPI_RATE_MAPPING_COUNT 12
	struct {
		uint8_t	plcp;
		uint8_t	rf_gain;
		uint8_t	dsp_gain;
		uint8_t	reserved;
	} __packed	rates[WPI_RIDX_MAX + 1];

} __packed;

/* Structure for command WPI_CMD_BT_COEX. */
struct wpi_bluetooth {
	uint8_t		flags;
#define WPI_BT_COEX_DISABLE	0
#define WPI_BT_COEX_MODE_2WIRE	1
#define WPI_BT_COEX_MODE_3WIRE	2
#define WPI_BT_COEX_MODE_4WIRE	3

	uint8_t		lead_time;
#define WPI_BT_LEAD_TIME_DEF	30

	uint8_t		max_kill;
#define WPI_BT_MAX_KILL_DEF	5
#define WPI_FW_INIT_TEXT_MAXSZ (80 * 1024 )
#define WPI_FW_INIT_DATA_MAXSZ (32 * 1024 )
#define WPI_FW_BOOT_TEXT_MAXSZ 1024

	uint8_t		reserved;
	uint32_t	kill_ack;
	uint32_t	kill_cts;
struct wpi_firmware_hdr {

#define WPI_FW_MINVERSION 2144

	uint32_t	version;
	uint32_t	rtextsz;
	uint32_t	rdatasz;
	uint32_t	itextsz;
	uint32_t	idatasz;
	uint32_t	btextsz;
} __packed;

/* Structure for WPI_UC_READY notification. */
struct wpi_ucode_info {
	uint8_t		minor;
	uint8_t		major;
	uint16_t	reserved1;
	uint8_t		revision[8];
	uint8_t		type;
	uint8_t		subtype;
	uint16_t	reserved2;
	uint32_t	logptr;
	uint32_t	errptr;
	uint32_t	tstamp;
	uint32_t	valid;
} __packed;

/* Structure for WPI_START_SCAN notification. */
struct wpi_start_scan {
	uint64_t	tstamp;
	uint32_t	tbeacon;

	uint32_t	status;
} __packed;

/* Structure for WPI_STOP_SCAN notification. */
struct wpi_stop_scan {
	uint8_t		nchan;
	uint8_t		status;

	uint64_t	tsf;
} __packed;

/* Structures for WPI_{RX,BEACON}_STATISTICS notification. */
struct wpi_rx_phy_stats {
	uint32_t	ina;
	uint32_t	fina;
	uint32_t	bad_plcp;
	uint32_t	bad_crc32;
	uint32_t	overrun;
	uint32_t	eoverrun;
	uint32_t	good_crc32;
	uint32_t	fa;
	uint32_t	bad_fina_sync;
	uint32_t	sfd_timeout;
	uint32_t	fina_timeout;
	uint32_t	no_rts_ack;
	uint32_t	rxe_limit;
	uint32_t	ack;
	uint32_t	cts;
} __packed;

struct wpi_rx_general_stats {
	uint32_t	bad_cts;
	uint32_t	bad_ack;
	uint32_t	not_bss;
	uint32_t	filtered;
	uint32_t	bad_chan;
} __packed;

struct wpi_rx_stats {
	struct wpi_rx_phy_stats		ofdm;
	struct wpi_rx_phy_stats		cck;
	struct wpi_rx_general_stats	general;
} __packed;

struct wpi_tx_stats {
	uint32_t	preamble;
	uint32_t	rx_detected;
	uint32_t	bt_defer;
	uint32_t	bt_kill;
	uint32_t	short_len;
	uint32_t	cts_timeout;
	uint32_t	ack_timeout;
	uint32_t	exp_ack;
	uint32_t	ack;
} __packed;

struct wpi_general_stats {
	uint32_t	temp;
	uint32_t	burst_check;
	uint32_t	burst;
	uint32_t	reserved[4];
	uint32_t	sleep;
	uint32_t	slot_out;
	uint32_t	slot_idle;
	uint32_t	ttl_tstamp;
	uint32_t	tx_ant_a;
	uint32_t	tx_ant_b;
	uint32_t	exec;
	uint32_t	probe;
} __packed;

struct wpi_stats {
	uint32_t			flags;
	struct wpi_rx_stats		rx;
	struct wpi_tx_stats		tx;
	struct wpi_general_stats	general;
} __packed;

/* Possible flags for command WPI_CMD_GET_STATISTICS. */
#define WPI_STATISTICS_BEACON_DISABLE	(1 << 1)


/* Firmware error dump entry. */
struct wpi_fw_dump {
	uint32_t	desc;
	uint32_t	time;
	uint32_t	blink[2];
	uint32_t	ilink[2];
	uint32_t	data;
} __packed;

/* Firmware image file header. */
struct wpi_firmware_hdr {

#define WPI_FW_MINVERSION 2144
#define WPI_FW_NAME "wpifw"

	uint16_t	driver;
	uint8_t		minor;
	uint8_t		major;
	uint32_t	rtextsz;
	uint32_t	rdatasz;
	uint32_t	itextsz;
	uint32_t	idatasz;
	uint32_t	btextsz;
} __packed;

#define WPI_FW_TEXT_MAXSZ	 ( 80 * 1024 )
#define WPI_FW_DATA_MAXSZ	 ( 32 * 1024 )
#define WPI_FW_BOOT_TEXT_MAXSZ		1024

#define WPI_FW_UPDATED	(1U << 31 )

/*
 * Offsets into EEPROM.
 */
#define WPI_EEPROM_MAC		0x015
#define WPI_EEPROM_REVISION	0x035
#define WPI_EEPROM_SKU_CAP	0x045
#define WPI_EEPROM_TYPE		0x04a
#define WPI_EEPROM_DOMAIN	0x060
#define WPI_EEPROM_BAND1	0x063


struct wpi_eeprom_chan {
	uint8_t	flags;
#define WPI_EEPROM_CHAN_VALID	(1 << 0)
#define	WPI_EEPROM_CHAN_IBSS	(1 << 1)
#define WPI_EEPROM_CHAN_ACTIVE	(1 << 3)
#define WPI_EEPROM_CHAN_RADAR	(1 << 4)

	int8_t	maxpwr;
} __packed;

struct wpi_eeprom_sample {
	uint8_t		index;
	int8_t		power;
	uint16_t	volt;
} __packed;

#define WPI_POWER_GROUPS_COUNT	5

struct wpi_eeprom_group {
	struct		wpi_eeprom_sample samples[5];
	int32_t		coef[5];
	int32_t		corr[5];
	int8_t		maxpwr;
	uint8_t		chan;
	int16_t		temp;
} __packed;

#define WPI_CHAN_BANDS_COUNT	 5
#define WPI_MAX_CHAN_PER_BAND	14

static const struct wpi_chan_band {
	uint32_t	addr;	/* offset in EEPROM */
	uint8_t		nchan;
	uint8_t		chan[WPI_MAX_CHAN_PER_BAND];
} wpi_bands[] = {
	/* 20MHz channels, 2GHz band. */
	{ WPI_EEPROM_BAND1, 14,
	    { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 } },
	/* 20MHz channels, 5GHz band. */
	{ WPI_EEPROM_BAND2, 13,
	    { 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16 } },
	{ WPI_EEPROM_BAND3, 12,
	    { 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64 } },
	{ WPI_EEPROM_BAND4, 11,
	    { 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140 } },
	{ WPI_EEPROM_BAND5, 6,
	    { 145, 149, 153, 157, 161, 165 } }
};

/* HW rate indices. */
#define WPI_RIDX_OFDM6	 0
#define WPI_RIDX_OFDM36	 5
#define WPI_RIDX_OFDM48	 6
#define WPI_RIDX_OFDM54	 7
#define WPI_RIDX_CCK1	 8
#define WPI_RIDX_CCK2	 9
#define WPI_RIDX_CCK11	11

static const uint8_t wpi_ridx_to_plcp[] = {
	/* OFDM: IEEE Std 802.11a-1999, pp. 14 Table 80 */
	/* R1-R4 (ral/ural is R4-R1) */
	0xd, 0xf, 0x5, 0x7, 0x9, 0xb, 0x1, 0x3,
	/* CCK: device-dependent */
	10, 20, 55, 110
};

#define WPI_MAX_PWR_INDEX	77

/*

 * the reference driver.)
 */
static const uint8_t wpi_rf_gain_2ghz[WPI_MAX_PWR_INDEX + 1] = {
	0xfb, 0xfb, 0xfb, 0xfb, 0xfb, 0xfb, 0xfb, 0xfb, 0xbb, 0xbb, 0xbb,
	0xbb, 0xf3, 0xf3, 0xf3, 0xf3, 0xf3, 0xd3, 0xd3, 0xb3, 0xb3, 0xb3,
	0x93, 0x93, 0x93, 0x93, 0x93, 0x93, 0x93, 0x73, 0xeb, 0xeb, 0xeb,
	0xcb, 0xcb, 0xcb, 0xcb, 0xcb, 0xcb, 0xcb, 0xab, 0xab, 0xab, 0x8b,
	0xe3, 0xe3, 0xe3, 0xe3, 0xe3, 0xe3, 0xc3, 0xc3, 0xc3, 0xc3, 0xa3,
	0xa3, 0xa3, 0xa3, 0x83, 0x83, 0x83, 0x83, 0x63, 0x63, 0x63, 0x63,
	0x43, 0x43, 0x43, 0x43, 0x23, 0x23, 0x23, 0x23, 0x03, 0x03, 0x03,
	0x03
};

static const uint8_t wpi_rf_gain_5ghz[WPI_MAX_PWR_INDEX + 1] = {
	0xfb, 0xfb, 0xfb, 0xdb, 0xdb, 0xbb, 0xbb, 0x9b, 0x9b, 0x7b, 0x7b,
	0x7b, 0x7b, 0x5b, 0x3b, 0x3b, 0x3b, 0x3b, 0x3b, 0x3b, 0x1b, 0x1b,
	0x1b, 0x73, 0x73, 0x73, 0x53, 0x53, 0x53, 0x53, 0x53, 0x33, 0x33,
	0x33, 0x33, 0x13, 0x13, 0x13, 0x13, 0x13, 0xab, 0xab, 0xab, 0x8b,
	0x8b, 0x8b, 0x8b, 0x6b, 0x6b, 0x6b, 0x6b, 0x4b, 0x4b, 0x4b, 0x4b,
	0x2b, 0x2b, 0x2b, 0x2b, 0x0b, 0x0b, 0x0b, 0x0b, 0x83, 0x83, 0x63,
	0x63, 0x63, 0x63, 0x43, 0x43, 0x43, 0x43, 0x23, 0x23, 0x23, 0x23,
	0x03
};

/*

 * from the reference driver.)
 */
static const uint8_t wpi_dsp_gain_2ghz[WPI_MAX_PWR_INDEX + 1] = {
	0x7f, 0x7f, 0x7f, 0x7f, 0x7d, 0x6e, 0x69, 0x62, 0x7d, 0x73, 0x6c,
	0x63, 0x77, 0x6f, 0x69, 0x61, 0x5c, 0x6a, 0x64, 0x78, 0x71, 0x6b,
	0x7d, 0x77, 0x70, 0x6a, 0x65, 0x61, 0x5b, 0x6b, 0x79, 0x73, 0x6d,
	0x7f, 0x79, 0x73, 0x6c, 0x66, 0x60, 0x5c, 0x6e, 0x68, 0x62, 0x74,
	0x7d, 0x77, 0x71, 0x6b, 0x65, 0x60, 0x71, 0x6a, 0x66, 0x5f, 0x71,
	0x6a, 0x66, 0x5f, 0x71, 0x6a, 0x66, 0x5f, 0x71, 0x6a, 0x66, 0x5f,
	0x71, 0x6a, 0x66, 0x5f, 0x71, 0x6a, 0x66, 0x5f, 0x71, 0x6a, 0x66,
	0x5f
};

static const uint8_t wpi_dsp_gain_5ghz[WPI_MAX_PWR_INDEX + 1] = {
	0x7f, 0x78, 0x72, 0x77, 0x65, 0x71, 0x66, 0x72, 0x67, 0x75, 0x6b,
	0x63, 0x5c, 0x6c, 0x7d, 0x76, 0x6d, 0x66, 0x60, 0x5a, 0x68, 0x62,
	0x5c, 0x76, 0x6f, 0x68, 0x7e, 0x79, 0x71, 0x69, 0x63, 0x76, 0x6f,
	0x68, 0x62, 0x74, 0x6d, 0x66, 0x62, 0x5d, 0x71, 0x6b, 0x63, 0x78,
	0x71, 0x6b, 0x63, 0x78, 0x71, 0x6b, 0x63, 0x78, 0x71, 0x6b, 0x63,
	0x78, 0x71, 0x6b, 0x63, 0x78, 0x71, 0x6b, 0x63, 0x6b, 0x63, 0x78,
	0x71, 0x6b, 0x63, 0x78, 0x71, 0x6b, 0x63, 0x78, 0x71, 0x6b, 0x63,
	0x78
};

/*
 * Power saving settings (values obtained from the reference driver.)
 */
#define WPI_NDTIMRANGES		2
#define WPI_NPOWERLEVELS	6
static const struct wpi_pmgt {
	uint32_t	rxtimeout;
	uint32_t	txtimeout;
	uint32_t	intval[5];
	int		skip_dtim;
} wpi_pmgt[WPI_NDTIMRANGES][WPI_NPOWERLEVELS] = {
	/* DTIM <= 10 */
	{
	{   0,   0, {  0,  0,  0,  0,  0 }, 0 },	/* CAM */
	{ 200, 500, {  1,  2,  3,  4,  4 }, 0 },	/* PS level 1 */
	{ 200, 300, {  2,  4,  6,  7,  7 }, 0 },	/* PS level 2 */
	{  50, 100, {  2,  6,  9,  9, 10 }, 0 },	/* PS level 3 */
	{  50,  25, {  2,  7,  9,  9, 10 }, 1 },	/* PS level 4 */
	{  25,  25, {  4,  7, 10, 10, 10 }, 1 }		/* PS level 5 */
	},
	/* DTIM >= 11 */
	{
	{   0,   0, {  0,  0,  0,  0,  0 }, 0 },	/* CAM */
	{ 200, 500, {  1,  2,  3,  4, -1 }, 0 },	/* PS level 1 */
	{ 200, 300, {  2,  4,  6,  7, -1 }, 0 },	/* PS level 2 */
	{  50, 100, {  2,  6,  9,  9, -1 }, 0 },	/* PS level 3 */
	{  50,  25, {  2,  7,  9,  9, -1 }, 0 },	/* PS level 4 */
	{  25,  25, {  4,  7, 10, 10, -1 }, 0 }		/* PS level 5 */
	}
};

/* Firmware errors. */
static const char * const wpi_fw_errmsg[] = {
	"OK",
	"FAIL",
	"BAD_PARAM",
	"BAD_CHECKSUM",
	"NMI_INTERRUPT",
	"SYSASSERT",
	"FATAL_ERROR"
};

/* XXX description for some error codes (error data). */
/* 0x00000074 - wrong totlen field */
/* 0x000003B3 - powersave error */
/* 0x00000447 - wrong channel selected */

#define WPI_READ(sc, reg)						\
	bus_space_read_4((sc)->sc_st, (sc)->sc_sh, (reg))

#define WPI_WRITE(sc, reg, val)						\
	bus_space_write_4((sc)->sc_st, (sc)->sc_sh, (reg), (val))

#define WPI_WRITE_REGION_4(sc, offset, datap, count)			\
	bus_space_write_region_4((sc)->sc_st, (sc)->sc_sh, (offset),	\
	    (datap), (count))

#define WPI_SETBITS(sc, reg, mask)					\
	WPI_WRITE(sc, reg, WPI_READ(sc, reg) | (mask))

#define WPI_CLRBITS(sc, reg, mask)					\
	WPI_WRITE(sc, reg, WPI_READ(sc, reg) & ~(mask))

#define WPI_BARRIER_WRITE(sc)						\
	bus_space_barrier((sc)->sc_st, (sc)->sc_sh, 0, (sc)->sc_sz,	\
	    BUS_SPACE_BARRIER_WRITE)

#define WPI_BARRIER_READ_WRITE(sc)					\
	bus_space_barrier((sc)->sc_st, (sc)->sc_sh, 0, (sc)->sc_sz,	\
	    BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE)




 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
#include <net80211/ieee80211_amrr.h>

struct wpi_rx_radiotap_header {
	struct ieee80211_radiotap_header wr_ihdr;
	uint64_t	wr_tsft;

	int8_t		wr_dbm_antsignal;
	int8_t		wr_dbm_antnoise;
	uint8_t		wr_antenna;
} __packed;

#define WPI_RX_RADIOTAP_PRESENT						\
	((1 << IEEE80211_RADIOTAP_TSFT) |				\

	uint8_t		wt_rate;
	uint16_t	wt_chan_freq;
	uint16_t	wt_chan_flags;
} __packed;
};

#define WPI_TX_RADIOTAP_PRESENT						\
	((1 << IEEE80211_RADIOTAP_FLAGS) |				\

struct wpi_dma_info {
	bus_dma_tag_t		tag;
	bus_dmamap_t            map;
	bus_addr_t		paddr;
	caddr_t			vaddr;
	caddr_t			vaddr;	      /* aligned v address */
	caddr_t			vaddr_start;  /* possibly unaligned v start */
	bus_size_t		size;
};

struct wpi_tx_data {
	bus_dmamap_t		map;
	bus_addr_t		cmd_paddr;
	struct mbuf		*m;
	struct ieee80211_node	*ni;
};

	struct wpi_dma_info	cmd_dma;
	struct wpi_tx_desc	*desc;
	struct wpi_tx_cmd	*cmd;
	struct wpi_tx_data	data[WPI_TX_RING_COUNT];
	bus_dma_tag_t		data_dmat;
	int			qid;
	int			count;
	int			queued;
	int			cur;
	int			update;
};

#define WPI_RBUF_COUNT ( WPI_RX_RING_COUNT + 16 )

struct wpi_rx_data {
	struct mbuf	*m;
	bus_dmamap_t	map;
};

struct wpi_rx_ring {

	struct wpi_rx_data	data[WPI_RX_RING_COUNT];
	bus_dma_tag_t		data_dmat;
	int			cur;
	int			update;
};

struct wpi_node {
	struct ieee80211_node	ni;	/* must be the first */
	uint8_t			id;
	int	retrycnt;
	int	success;
	int	success_threshold;
	int	recovery;
};

struct wpi_power_sample {

	int16_t	temp;
};

struct wpi_buf {
	void			*data;
	struct ieee80211_node	*ni;
	struct mbuf		*m;
	size_t			size;
	int			code;
	int			ac;
};

struct wpi_vap {
	struct ieee80211vap	vap;
	struct wpi_buf		wv_bcbuf;

	int			(*newstate)(struct ieee80211vap *,
				    enum ieee80211_state, int);

};
#define	WPI_VAP(vap)	((struct wpi_vap *)(vap))

struct wpi_fw_part {
	const uint8_t	*text;
	uint32_t	textsz;
	const uint8_t	*data;
	uint32_t	datasz;
};

struct wpi_fw_info {
	const uint8_t		*data;
	size_t			size;
	struct wpi_fw_part	init;
	struct wpi_fw_part	main;
	struct wpi_fw_part	boot;
};

struct wpi_softc {
	device_t		sc_dev;

	struct ifnet		*sc_ifp;
	int			sc_debug;

	struct mtx		sc_mtx;
	struct unrhdr		*sc_unr;

	/* Flags indicating the current state the driver
	 * expects the hardware to be in
	 */
	uint32_t		flags;
#define WPI_FLAG_BUSY		(1 << 0)
#define WPI_FLAG_BUSY		(1 << 1)
#define WPI_FLAG_AUTH		(1 << 2)

	/* Shared area. */
	struct wpi_dma_info	shared_dma;
	struct wpi_shared	*shared;

	struct wpi_tx_ring	txq[WPI_NTXQUEUES];
	struct wpi_tx_ring	cmdq;
	struct wpi_rx_ring	rxq;

	/* TX Thermal Callibration. */
	struct callout		calib_to;
	int			calib_cnt;

	/* Watch dog timers. */
	struct callout		watchdog_to;
	struct callout		watchdog_rfkill;
	struct callout		hwswitch_to;

	/* Firmware image. */
	struct wpi_fw_info	fw;
	uint32_t		errptr;

	struct resource		*irq;
	struct resource		*mem;
	bus_space_tag_t		sc_st;
	bus_space_handle_t	sc_sh;
	void			*sc_ih;
	bus_size_t		sc_sz;
	int			sc_cap_off;     /* PCIe Capabilities. */

	struct wpi_rxon		rxon;
	int			temp;
	uint32_t		qfullmsk;


	int			sc_tx_timer;
	int			sc_scan_timer;

	void			(*sc_node_free)(struct ieee80211_node *);
	void			(*sc_scan_curchan)(struct ieee80211_scan_state *,
				    unsigned long);

	struct wpi_rx_radiotap_header sc_rxtap;
	struct wpi_tx_radiotap_header sc_txtap;

	/* Firmware image. */
	const struct firmware	*fw_fp;

	/* Firmware DMA transfer. */
	struct wpi_dma_info	fw_dma;

	/* Tasks used by the driver. */
	struct task		sc_reinittask;
	struct task		sc_radiooff_task;
	struct task		sc_radioon_task;

	/* Eeprom info. */
	uint8_t			cap;
	uint16_t		rev;
	uint8_t			type;
	struct wpi_eeprom_chan
	    eeprom_channels[WPI_CHAN_BANDS_COUNT][WPI_MAX_CHAN_PER_BAND];
	struct wpi_power_group	groups[WPI_POWER_GROUPS_COUNT];
	int8_t			maxpwr[IEEE80211_CHAN_MAX];
	char			domain[4];	/* Regulatory domain. */
};

#define WPI_LOCK_INIT(_sc) \
	mtx_init(&(_sc)->sc_mtx, device_get_nameunit((_sc)->sc_dev), \
            MTX_NETWORK_LOCK, MTX_DEF)

Lines 845-850 Link Here

(-)sys/conf/options (+3 lines)
845	# Options for the Intel 802.11n wireless driver	845	# Options for the Intel 802.11n wireless driver
846	IWN_DEBUG opt_iwn.h	846	IWN_DEBUG opt_iwn.h
847		847
		848	# Options for the Intel 3945ABG wireless driver
		849	WPI_DEBUG opt_wpi.h
		850
848	# dcons options	851	# dcons options
849	DCONS_BUF_SIZE opt_dcons.h	852	DCONS_BUF_SIZE opt_dcons.h
850	DCONS_POLL_HZ opt_dcons.h	853	DCONS_POLL_HZ opt_dcons.h

Lines 3-8 Link Here

(-)sys/modules/wpi/Makefile (-1 / +1 lines)
3	.PATH: ${.CURDIR}/../../dev/wpi	3	.PATH: ${.CURDIR}/../../dev/wpi
4		4
5	KMOD = if_wpi	5	KMOD = if_wpi
6	SRCS = if_wpi.c device_if.h bus_if.h pci_if.h opt_wlan.h	6	SRCS = if_wpi.c device_if.h bus_if.h pci_if.h opt_wpi.h opt_wlan.h
7		7
8	.include <bsd.kmod.mk>	8	.include <bsd.kmod.mk>

Return to bug 197143

Line 0 Link Here

(-)sys/dev/wpi/if_wpi_debug.h (+98 lines)
		1	/*-
		2	* Copyright (c) 2006,2007
		3	* Damien Bergamini <damien.bergamini@free.fr>
		4	* Benjamin Close <Benjamin.Close@clearchain.com>
		5	*
		6	* Permission to use, copy, modify, and distribute this software for any
		7	* purpose with or without fee is hereby granted, provided that the above
		8	* copyright notice and this permission notice appear in all copies.
		9	*
		10	* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
		11	* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
		12	* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
		13	* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
		14	* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
		15	* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
		16	* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
		17	*
		18	* $FreeBSD$
		19	*/
		20
		21	#ifndef __IF_WPI_DEBUG_H__
		22	#define __IF_WPI_DEBUG_H__
		23
		24	#ifdef WPI_DEBUG
		25	enum {
		26	WPI_DEBUG_XMIT = 0x00000001, /* basic xmit operation */
		27	WPI_DEBUG_RECV = 0x00000002, /* basic recv operation */
		28	WPI_DEBUG_STATE = 0x00000004, /* 802.11 state transitions */
		29	WPI_DEBUG_HW = 0x00000008, /* Stage 1 (eeprom) debugging */
		30	WPI_DEBUG_RESET = 0x00000010, /* reset processing */
		31	WPI_DEBUG_FIRMWARE = 0x00000020, /* firmware(9) loading debug */
		32	WPI_DEBUG_BEACON = 0x00000040, /* beacon handling */
		33	WPI_DEBUG_WATCHDOG = 0x00000080, /* watchdog timeout */
		34	WPI_DEBUG_INTR = 0x00000100, /* ISR */
		35	WPI_DEBUG_SCAN = 0x00000200, /* Scan related operations */
		36	WPI_DEBUG_NOTIFY = 0x00000400, /* State 2 Notif intr debug */
		37	WPI_DEBUG_TEMP = 0x00000800, /* TXPower/Temp Calibration */
		38	WPI_DEBUG_CMD = 0x00001000, /* cmd submission */
		39	WPI_DEBUG_TRACE = 0x00002000, /* Print begin and start driver function */
		40	WPI_DEBUG_PWRSAVE = 0x00004000, /* Power save operations */
		41	WPI_DEBUG_EEPROM = 0x00008000, /* EEPROM info */
		42	WPI_DEBUG_KEY = 0x00010000, /* node key management */
		43	WPI_DEBUG_EDCA = 0x00020000, /* WME info */
		44	WPI_DEBUG_ANY = 0xffffffff
		45	};
		46
		47	#define DPRINTF(sc, m, ...) do { \
		48	if (sc->sc_debug & (m)) \
		49	printf(__VA_ARGS__); \
		50	} while (0)
		51
		52	#define TRACE_STR_BEGIN "->%s: begin\n"
		53	#define TRACE_STR_DOING "->Doing %s\n"
		54	#define TRACE_STR_END "->%s: end\n"
		55	#define TRACE_STR_END_ERR "->%s: end in error\n"
		56
		57	static const char *wpi_cmd_str(int cmd)
		58	{
		59	switch (cmd) {
		60	/* Notifications */
		61	case WPI_UC_READY: return "UC_READY";
		62	case WPI_RX_DONE: return "RX_DONE";
		63	case WPI_START_SCAN: return "START_SCAN";
		64	case WPI_SCAN_RESULTS: return "SCAN_RESULTS";
65	case WPI_STOP_SCAN: return "STOP_SCAN";
66	case WPI_BEACON_SENT: return "BEACON_SENT";
67	case WPI_RX_STATISTICS: return "RX_STATS";
68	case WPI_BEACON_STATISTICS: return "BEACON_STATS";
69	case WPI_STATE_CHANGED: return "STATE_CHANGED";
70	case WPI_BEACON_MISSED: return "BEACON_MISSED";
71
72	/* Command notifications */
73	case WPI_CMD_RXON: return "WPI_CMD_RXON";
74	case WPI_CMD_RXON_ASSOC: return "WPI_CMD_RXON_ASSOC";
75	case WPI_CMD_EDCA_PARAMS: return "WPI_CMD_EDCA_PARAMS";
76	case WPI_CMD_TIMING: return "WPI_CMD_TIMING";
77	case WPI_CMD_ADD_NODE: return "WPI_CMD_ADD_NODE";
78	case WPI_CMD_DEL_NODE: return "WPI_CMD_DEL_NODE";
79	case WPI_CMD_TX_DATA: return "WPI_CMD_TX_DATA";
80	case WPI_CMD_MRR_SETUP: return "WPI_CMD_MRR_SETUP";
81	case WPI_CMD_SET_LED: return "WPI_CMD_SET_LED";
82	case WPI_CMD_SET_POWER_MODE: return "WPI_CMD_SET_POWER_MODE";
83	case WPI_CMD_SCAN: return "WPI_CMD_SCAN";
84	case WPI_CMD_SET_BEACON: return "WPI_CMD_SET_BEACON";
85	case WPI_CMD_TXPOWER: return "WPI_CMD_TXPOWER";
86	case WPI_CMD_BT_COEX: return "WPI_CMD_BT_COEX";
87
88	default:
89	KASSERT(1, ("Unknown Command: %d\n", cmd));
90	return "UNKNOWN CMD";
91	}
92	}
93
94	#else
95	#define DPRINTF(sc, m, ...) do { (void) sc; } while (0)
96	#endif
97
98	#endif /* __IF_WPI_DEBUG_H__ */

Lines 16-23 Link Here

(-)sys/dev/wpi/if_wpivar.h (-42 / +70 lines)
16	* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF	16	* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17	* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.	17	* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18	*/	18	*/
19	#include <net80211/ieee80211_amrr.h>
20
21	struct wpi_rx_radiotap_header {	19	struct wpi_rx_radiotap_header {
22	struct ieee80211_radiotap_header wr_ihdr;	20	struct ieee80211_radiotap_header wr_ihdr;
23	uint64_t wr_tsft;	21	uint64_t wr_tsft;
Lines 28-34 Link Here
28	int8_t wr_dbm_antsignal;	26	int8_t wr_dbm_antsignal;
29	int8_t wr_dbm_antnoise;	27	int8_t wr_dbm_antnoise;
30	uint8_t wr_antenna;	28	uint8_t wr_antenna;
31	};	29	} __packed;
32		30
33	#define WPI_RX_RADIOTAP_PRESENT \	31	#define WPI_RX_RADIOTAP_PRESENT \
34	((1 << IEEE80211_RADIOTAP_TSFT) \| \	32	((1 << IEEE80211_RADIOTAP_TSFT) \| \
Lines 45-52 Link Here
45	uint8_t wt_rate;	43	uint8_t wt_rate;
46	uint16_t wt_chan_freq;	44	uint16_t wt_chan_freq;
47	uint16_t wt_chan_flags;	45	uint16_t wt_chan_flags;
48	uint8_t wt_hwqueue;	46	} __packed;
49	};
50		47
51	#define WPI_TX_RADIOTAP_PRESENT \	48	#define WPI_TX_RADIOTAP_PRESENT \
52	((1 << IEEE80211_RADIOTAP_FLAGS) \| \	49	((1 << IEEE80211_RADIOTAP_FLAGS) \| \
Lines 56-70 Link Here
56	struct wpi_dma_info {	53	struct wpi_dma_info {
57	bus_dma_tag_t tag;	54	bus_dma_tag_t tag;
58	bus_dmamap_t map;	55	bus_dmamap_t map;
59	bus_addr_t paddr; /* aligned p address */	56	bus_addr_t paddr;
60	bus_addr_t paddr_start; /* possibly unaligned p start*/	57	caddr_t vaddr;
61	caddr_t vaddr; /* aligned v address */
62	caddr_t vaddr_start; /* possibly unaligned v start */
63	bus_size_t size;	58	bus_size_t size;
64	};	59	};
65		60
66	struct wpi_tx_data {	61	struct wpi_tx_data {
67	bus_dmamap_t map;	62	bus_dmamap_t map;
		63	bus_addr_t cmd_paddr;
68	struct mbuf *m;	64	struct mbuf *m;
69	struct ieee80211_node *ni;	65	struct ieee80211_node *ni;
70	};	66	};
Lines 74-92 Link Here
74	struct wpi_dma_info cmd_dma;	70	struct wpi_dma_info cmd_dma;
75	struct wpi_tx_desc *desc;	71	struct wpi_tx_desc *desc;
76	struct wpi_tx_cmd *cmd;	72	struct wpi_tx_cmd *cmd;
77	struct wpi_tx_data *data;	73	struct wpi_tx_data data[WPI_TX_RING_COUNT];
78	bus_dma_tag_t data_dmat;	74	bus_dma_tag_t data_dmat;
79	int qid;	75	int qid;
80	int count;
81	int queued;	76	int queued;
82	int cur;	77	int cur;
		78	int update;
83	};	79	};
84		80
85	#define WPI_RBUF_COUNT ( WPI_RX_RING_COUNT + 16 )
86
87	struct wpi_rx_data {	81	struct wpi_rx_data {
88	bus_dmamap_t map;	82	struct mbuf *m;
89	struct mbuf *m;	83	bus_dmamap_t map;
90	};	84	};
91		85
92	struct wpi_rx_ring {	86	struct wpi_rx_ring {
Lines 95-109 Link Here
95	struct wpi_rx_data data[WPI_RX_RING_COUNT];	89	struct wpi_rx_data data[WPI_RX_RING_COUNT];
96	bus_dma_tag_t data_dmat;	90	bus_dma_tag_t data_dmat;
97	int cur;	91	int cur;
		92	int update;
98	};	93	};
99		94
100	struct wpi_amrr {	95	struct wpi_node {
101	struct ieee80211_node ni; /* must be the first */	96	struct ieee80211_node ni; /* must be the first */
102	int txcnt;	97	uint8_t id;
103	int retrycnt;
104	int success;
105	int success_threshold;
106	int recovery;
107	};	98	};
108		99
109	struct wpi_power_sample {	100	struct wpi_power_sample {
Lines 119-126 Link Here
119	int16_t temp;	110	int16_t temp;
120	};	111	};
121		112
		113	struct wpi_buf {
		114	void *data;
		115	struct ieee80211_node *ni;
		116	struct mbuf *m;
		117	size_t size;
		118	int code;
		119	int ac;
		120	};
		121
122	struct wpi_vap {	122	struct wpi_vap {
123	struct ieee80211vap vap;	123	struct ieee80211vap vap;
		124	struct wpi_buf wv_bcbuf;
124		125
125	int (newstate)(struct ieee80211vap ,	126	int (newstate)(struct ieee80211vap ,
126	enum ieee80211_state, int);	127	enum ieee80211_state, int);
Lines 127-198 Link Here
127	};	128	};
128	#define WPI_VAP(vap) ((struct wpi_vap *)(vap))	129	#define WPI_VAP(vap) ((struct wpi_vap *)(vap))
129		130
		131	struct wpi_fw_part {
		132	const uint8_t *text;
		133	uint32_t textsz;
		134	const uint8_t *data;
		135	uint32_t datasz;
		136	};
		137
		138	struct wpi_fw_info {
		139	const uint8_t *data;
		140	size_t size;
		141	struct wpi_fw_part init;
		142	struct wpi_fw_part main;
		143	struct wpi_fw_part boot;
		144	};
		145
130	struct wpi_softc {	146	struct wpi_softc {
131	device_t sc_dev;	147	device_t sc_dev;
		148
132	struct ifnet *sc_ifp;	149	struct ifnet *sc_ifp;
		150	int sc_debug;
		151
133	struct mtx sc_mtx;	152	struct mtx sc_mtx;
		153	struct unrhdr *sc_unr;
134		154
135	/* Flags indicating the current state the driver	155	/* Flags indicating the current state the driver
136	* expects the hardware to be in	156	* expects the hardware to be in
137	*/	157	*/
138	uint32_t flags;	158	uint32_t flags;
139	#define WPI_FLAG_HW_RADIO_OFF (1 << 0)	159	#define WPI_FLAG_BUSY (1 << 0)
140	#define WPI_FLAG_BUSY (1 << 1)
141	#define WPI_FLAG_AUTH (1 << 2)
142		160
143	/* shared area */	161	/* Shared area. */
144	struct wpi_dma_info shared_dma;	162	struct wpi_dma_info shared_dma;
145	struct wpi_shared *shared;	163	struct wpi_shared *shared;
146		164
147	struct wpi_tx_ring txq[WME_NUM_AC];	165	struct wpi_tx_ring txq[WPI_NTXQUEUES];
148	struct wpi_tx_ring cmdq;
149	struct wpi_rx_ring rxq;	166	struct wpi_rx_ring rxq;
150		167
151	/* TX Thermal Callibration */	168	/* TX Thermal Callibration. */
152	struct callout calib_to;	169	struct callout calib_to;
153	int calib_cnt;	170	int calib_cnt;
154		171
155	/* Watch dog timer */	172	/* Watch dog timers. */
156	struct callout watchdog_to;	173	struct callout watchdog_to;
157	/* Hardware switch polling timer */	174	struct callout watchdog_rfkill;
158	struct callout hwswitch_to;
159		175
		176	/* Firmware image. */
		177	struct wpi_fw_info fw;
		178	uint32_t errptr;
		179
160	struct resource *irq;	180	struct resource *irq;
161	struct resource *mem;	181	struct resource *mem;
162	bus_space_tag_t sc_st;	182	bus_space_tag_t sc_st;
163	bus_space_handle_t sc_sh;	183	bus_space_handle_t sc_sh;
164	void *sc_ih;	184	void *sc_ih;
		185	bus_size_t sc_sz;
		186	int sc_cap_off; /* PCIe Capabilities. */
165		187
166	struct wpi_config config;	188	struct wpi_rxon rxon;
167	int temp;	189	int temp;
		190	uint32_t qfullmsk;
168		191
169
170	int sc_tx_timer;	192	int sc_tx_timer;
171	int sc_scan_timer;	193	int sc_scan_timer;
172		194
173	struct bpf_if *sc_drvbpf;	195	void (sc_node_free)(struct ieee80211_node );
		196	void (sc_scan_curchan)(struct ieee80211_scan_state ,
		197	unsigned long);
174		198
175	struct wpi_rx_radiotap_header sc_rxtap;	199	struct wpi_rx_radiotap_header sc_rxtap;
176	struct wpi_tx_radiotap_header sc_txtap;	200	struct wpi_tx_radiotap_header sc_txtap;
177		201
178	/* firmware image */	202	/* Firmware image. */
179	const struct firmware *fw_fp;	203	const struct firmware *fw_fp;
180		204
181	/* firmware DMA transfer */	205	/* Firmware DMA transfer. */
182	struct wpi_dma_info fw_dma;	206	struct wpi_dma_info fw_dma;
183		207
184	/* Tasks used by the driver */	208	/* Tasks used by the driver. */
185	struct task sc_restarttask; /* reset firmware task */	209	struct task sc_reinittask;
186	struct task sc_radiotask; /* reset rf task */	210	struct task sc_radiooff_task;
		211	struct task sc_radioon_task;
187		212
188	/* Eeprom info */	213	/* Eeprom info. */
189	uint8_t cap;	214	uint8_t cap;
190	uint16_t rev;	215	uint16_t rev;
191	uint8_t type;	216	uint8_t type;
		217	struct wpi_eeprom_chan
		218	eeprom_channels[WPI_CHAN_BANDS_COUNT][WPI_MAX_CHAN_PER_BAND];
192	struct wpi_power_group groups[WPI_POWER_GROUPS_COUNT];	219	struct wpi_power_group groups[WPI_POWER_GROUPS_COUNT];
193	int8_t maxpwr[IEEE80211_CHAN_MAX];	220	int8_t maxpwr[IEEE80211_CHAN_MAX];
194	char domain[4]; /reglatory domain XXX /	221	char domain[4]; /* Regulatory domain. */
195	};	222	};
		223
196	#define WPI_LOCK_INIT(_sc) \	224	#define WPI_LOCK_INIT(_sc) \
197	mtx_init(&(_sc)->sc_mtx, device_get_nameunit((_sc)->sc_dev), \	225	mtx_init(&(_sc)->sc_mtx, device_get_nameunit((_sc)->sc_dev), \
198	MTX_NETWORK_LOCK, MTX_DEF)	226	MTX_NETWORK_LOCK, MTX_DEF)