if_wpi - Port of FreeBSD's wpi driver for Intel 3945ABG Wifi adapters.
authorJoe Talbott <josepht@dragonflybsd.org>
Wed, 19 May 2010 00:36:03 +0000 (20:36 -0400)
committerJoe Talbott <josepht@dragonflybsd.org>
Wed, 2 Jun 2010 15:38:31 +0000 (11:38 -0400)
sys/dev/netif/wpi/Makefile [new file with mode: 0644]
sys/dev/netif/wpi/if_wpi.c [new file with mode: 0644]
sys/dev/netif/wpi/if_wpireg.h [new file with mode: 0644]
sys/dev/netif/wpi/if_wpivar.h [new file with mode: 0644]

diff --git a/sys/dev/netif/wpi/Makefile b/sys/dev/netif/wpi/Makefile
new file mode 100644 (file)
index 0000000..a45ab4b
--- /dev/null
@@ -0,0 +1,13 @@
+# $DragonFly: $
+
+KMOD   = if_wpi
+SRCS   = if_wpi.c device_if.h bus_if.h pci_if.h
+SRCS   += opt_polling.h
+SRCS   += miibus_if.h
+
+.ifndef BUILDING_WITH_KERNEL
+opt_polling.h:
+       echo '#define DEVICE_POLLING 1' > ${.OBJDIR}/${.TARGET}
+.endif
+
+.include <bsd.kmod.mk>
diff --git a/sys/dev/netif/wpi/if_wpi.c b/sys/dev/netif/wpi/if_wpi.c
new file mode 100644 (file)
index 0000000..4ac5384
--- /dev/null
@@ -0,0 +1,3767 @@
+/*-
+ * 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.
+ */
+
+#define VERSION "20071127"
+
+
+/*
+__FBSDID("$FreeBSD: src/sys/dev/wpi/if_wpi.c,v 1.27.2.2 2010/02/14 09:34:27 gavin Exp $");
+*/
+
+/*
+ * Driver for Intel PRO/Wireless 3945ABG 802.11 network adapters.
+ *
+ * The 3945ABG network adapter doesn't use traditional hardware as
+ * many other adaptors do. Instead at run time the eeprom is set into a known
+ * state and told to load boot firmware. The boot firmware loads an init and a
+ * main  binary firmware image into SRAM on the card via DMA.
+ * Once the firmware is loaded, the driver/hw then
+ * communicate by way of circular dma rings via the the SRAM to the firmware.
+ *
+ * There is 6 memory rings. 1 command ring, 1 rx data ring & 4 tx data rings.
+ * The 4 tx data rings allow for prioritization QoS.
+ *
+ * The rx data ring consists of 32 dma buffers. Two registers are used to
+ * indicate where in the ring the driver and the firmware are up to. The
+ * driver sets the initial read index (reg1) and the initial write index (reg2),
+ * the firmware updates the read index (reg1) on rx of a packet and fires an
+ * interrupt. The driver then processes the buffers starting at reg1 indicating
+ * to the firmware which buffers have been accessed by updating reg2. At the
+ * same time allocating new memory for the processed buffer.
+ *
+ * A similar thing happens with the tx rings. The difference is the firmware
+ * stop processing buffers once the queue is full and until confirmation
+ * of a successful transmition (tx_intr) has occurred.
+ *
+ * The command ring operates in the same manner as the tx queues.
+ *
+ * All communication direct to the card (ie eeprom) is classed as Stage1
+ * communication
+ *
+ * All communication via the firmware to the card is classed as State2.
+ * The firmware consists of 2 parts. A bootstrap firmware and a runtime
+ * firmware. The bootstrap firmware and runtime firmware are loaded
+ * from host memory via dma to the card then told to execute. From this point
+ * on the majority of communications between the driver and the card goes
+ * via the firmware.
+ */
+
+#include <sys/param.h>
+#include <sys/sysctl.h>
+#include <sys/sockio.h>
+#include <sys/mbuf.h>
+#include <sys/kernel.h>
+#include <sys/socket.h>
+#include <sys/systm.h>
+#include <sys/malloc.h>
+#include <sys/queue.h>
+#include <sys/taskqueue.h>
+#include <sys/module.h>
+#include <sys/bus.h>
+#include <sys/endian.h>
+#include <sys/linker.h>
+#include <sys/firmware.h>
+
+#include <sys/bus.h>
+#include <sys/resource.h>
+#include <sys/rman.h>
+
+#include <bus/pci/pcireg.h>
+#include <bus/pci/pcivar.h>
+
+#include <net/bpf.h>
+#include <net/if.h>
+#include <net/if_arp.h>
+/*
+#include <net/altq/if_altq.h>
+*/
+#include <net/ifq_var.h>
+#include <net/ethernet.h>
+#include <net/if_dl.h>
+#include <net/if_media.h>
+#include <net/if_types.h>
+
+#include <netproto/802_11/ieee80211_var.h>
+#include <netproto/802_11/ieee80211_radiotap.h>
+#include <netproto/802_11/ieee80211_regdomain.h>
+#include <netproto/802_11/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>
+
+/* XXX: move elsewhere */
+#define abs(x) (((x) < 0) ? -(x) : (x))
+
+struct mbuf *(*tbr_dequeue_ptr)(struct ifaltq *, int) = NULL;
+
+#include "if_wpireg.h"
+#include "if_wpivar.h"
+
+#define WPI_DEBUG
+
+#ifdef WPI_DEBUG
+#define DPRINTF(x)     do { if (wpi_debug != 0) kprintf x; } while (0)
+#define DPRINTFN(n, x) do { if (wpi_debug & n) kprintf 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 = 1;
+SYSCTL_INT(_debug, OID_AUTO, wpi, CTLFLAG_RW, &wpi_debug, 0, "wpi debug level");
+TUNABLE_INT("debug.wpi", &wpi_debug);
+
+#else
+#define DPRINTF(x)
+#define DPRINTFN(n, x)
+#define WPI_DEBUG_SET  0
+#endif
+
+struct wpi_ident {
+       uint16_t        vendor;
+       uint16_t        device;
+       uint16_t        subdevice;
+       const char      *name;
+};
+
+static const struct wpi_ident wpi_ident_table[] = {
+       /* The below entries support ABG regardless of the subid */
+       { 0x8086, 0x4222,    0x0, "Intel(R) PRO/Wireless 3945ABG" },
+       { 0x8086, 0x4227,    0x0, "Intel(R) PRO/Wireless 3945ABG" },
+       /* The below entries only support BG */
+       { 0x8086, 0x4222, 0x1005, "Intel(R) PRO/Wireless 3945BG"  },
+       { 0x8086, 0x4222, 0x1034, "Intel(R) PRO/Wireless 3945BG"  },
+       { 0x8086, 0x4227, 0x1014, "Intel(R) PRO/Wireless 3945BG"  },
+       { 0x8086, 0x4222, 0x1044, "Intel(R) PRO/Wireless 3945BG"  },
+       { 0, 0, 0, NULL }
+};
+
+static struct ieee80211vap *wpi_vap_create(struct ieee80211com *,
+                   const char name[IFNAMSIZ], int unit, int opmode,
+                   int flags, const uint8_t bssid[IEEE80211_ADDR_LEN],
+                   const uint8_t mac[IEEE80211_ADDR_LEN]);
+static void    wpi_vap_delete(struct ieee80211vap *);
+static int     wpi_dma_contig_alloc(struct wpi_softc *, struct wpi_dma_info *,
+                   void **, bus_size_t, bus_size_t, int);
+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_rx_ring(struct wpi_softc *, struct wpi_rx_ring *);
+static void    wpi_reset_rx_ring(struct wpi_softc *, struct wpi_rx_ring *);
+static void    wpi_free_rx_ring(struct wpi_softc *, struct wpi_rx_ring *);
+static int     wpi_alloc_tx_ring(struct wpi_softc *, struct wpi_tx_ring *,
+                   int, int);
+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 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_mem_lock(struct wpi_softc *);
+static void    wpi_mem_unlock(struct wpi_softc *);
+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_tx_intr(struct wpi_softc *, struct wpi_rx_desc *);
+static void    wpi_cmd_intr(struct wpi_softc *, struct wpi_rx_desc *);
+static void    wpi_notif_intr(struct wpi_softc *);
+static void    wpi_intr(void *);
+static uint8_t wpi_plcp_signal(int);
+static void    wpi_watchdog(void *);
+static int     wpi_tx_data(struct wpi_softc *, struct mbuf *,
+                   struct ieee80211_node *, int);
+static void    wpi_start(struct ifnet *);
+static void    wpi_start_locked(struct ifnet *);
+static int     wpi_raw_xmit(struct ieee80211_node *, struct mbuf *,
+                   const struct ieee80211_bpf_params *);
+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, struct ucred *);
+static void    wpi_read_eeprom(struct wpi_softc *,
+                   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 void    wpi_set_led(struct wpi_softc *, uint8_t, uint8_t, uint8_t);
+static void    wpi_enable_tsf(struct wpi_softc *, struct ieee80211_node *);
+#if 0
+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_scan(struct wpi_softc *);
+static int     wpi_config(struct wpi_softc *);
+static void    wpi_stop_master(struct wpi_softc *);
+static int     wpi_power_up(struct wpi_softc *);
+static int     wpi_reset(struct wpi_softc *);
+static void    wpi_hwreset(void *, int);
+static void    wpi_rfreset(void *, int);
+static void    wpi_hw_config(struct wpi_softc *);
+static void    wpi_init(void *);
+static void    wpi_init_locked(struct wpi_softc *, int);
+static void    wpi_stop(struct wpi_softc *);
+static void    wpi_stop_locked(struct wpi_softc *);
+
+static void    wpi_newassoc(struct ieee80211_node *, 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),
+       DEVMETHOD(device_attach,        wpi_attach),
+       DEVMETHOD(device_detach,        wpi_detach),
+       DEVMETHOD(device_shutdown,      wpi_shutdown),
+       DEVMETHOD(device_suspend,       wpi_suspend),
+       DEVMETHOD(device_resume,        wpi_resume),
+
+       { 0, 0 }
+};
+
+static driver_t wpi_driver = {
+       "wpi",
+       wpi_methods,
+       sizeof (struct wpi_softc)
+};
+
+static devclass_t wpi_devclass;
+
+DRIVER_MODULE(wpi, pci, wpi_driver, wpi_devclass, 0, 0);
+
+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
+};
+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)
+{
+       const struct wpi_ident *ident;
+
+       for (ident = wpi_ident_table; ident->name != NULL; ident++) {
+               if (pci_get_vendor(dev) == ident->vendor &&
+                   pci_get_device(dev) == ident->device) {
+                       device_set_desc(dev, ident->name);
+                       return 0;
+               }
+       }
+       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;
+#if 0
+       struct ifnet *ifp;
+#endif
+       const uint8_t *itext, *idata, *rtext, *rdata, *btext;
+       uint32_t itextsz, idatasz, rtextsz, rdatasz, btextsz;
+       int error;
+
+#if 0
+       ifp = sc->sc_ifp;
+#endif
+       DPRINTFN(WPI_DEBUG_FIRMWARE,
+           ("Attempting Loading Firmware from wpi_fw module\n"));
+
+       WPI_UNLOCK(sc);
+
+#if 0
+       lwkt_serialize_exit(ifp->if_serializer);
+#endif
+
+#if 0
+       if ((img = firmware_image_load("", dma->tag)) == NULL) {
+               error = ENOENT;
+               lwkt_serialize_enter(ifp->if_serializer);
+               goto fail;
+       }
+#endif
+
+
+       if (sc->fw_fp == NULL && (sc->fw_fp = firmware_get("wpifw")) == NULL) {
+               device_printf(sc->sc_dev,
+                   "could not load firmware image 'wpifw_fw'\n");
+               error = ENOENT;
+               WPI_LOCK(sc);
+#if 0
+               lwkt_serialize_enter(ifp->if_serializer);
+#endif
+               goto fail;
+       }
+
+       fp = sc->fw_fp;
+
+#if 0
+       lwkt_serialize_enter(ifp->if_serializer);
+#endif
+       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 0
+#endif
+
+       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 = lksleep(sc, &sc->sc_lock, 0, "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 = lksleep(sc, &sc->sc_lock, 0, "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"));
+/*
+       sc->sc_fw_image = img;
+*/
+       return error;
+fail:
+       wpi_unload_firmware(sc);
+       return error;
+}
+
+/**
+ * Free the referenced firmware image
+ */
+static void
+wpi_unload_firmware(struct wpi_softc *sc)
+{
+       struct ifnet *ifp;
+       ifp = sc->sc_ifp;
+
+       if (sc->fw_fp) {
+               WPI_UNLOCK(sc);
+#if 0
+               lwkt_serialize_exit(ifp->if_serializer);
+#endif
+               firmware_put(sc->fw_fp, FIRMWARE_UNLOAD);
+#if 0
+               firmware_image_unload(sc->sc_fw_image);
+#endif
+#if 0
+               lwkt_serialize_enter(ifp->if_serializer);
+#endif
+               WPI_LOCK(sc);
+               sc->fw_fp = NULL;
+       }
+}
+
+static int
+wpi_attach(device_t dev)
+{
+       struct wpi_softc *sc = device_get_softc(dev);
+       struct ifnet *ifp;
+       struct ieee80211com *ic;
+       int ac, error, supportsa = 1;
+       uint32_t tmp;
+       const struct wpi_ident *ident;
+       uint8_t macaddr[IEEE80211_ADDR_LEN];
+
+       sc->sc_dev = dev;
+
+       if (bootverbose || WPI_DEBUG_SET)
+           device_printf(sc->sc_dev,"Driver Revision %s\n", VERSION);
+
+       /*
+        * 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.
+        */
+       for (ident = wpi_ident_table; ident->name != NULL; ident++) {
+               if (ident->subdevice &&
+                   pci_get_subdevice(dev) == ident->subdevice) {
+                   supportsa = 0;
+                   break;
+               }
+       }
+
+       /* Create the tasks that can be queued */
+       TASK_INIT(&sc->sc_restarttask, 0, wpi_hwreset, sc);
+       TASK_INIT(&sc->sc_radiotask, 0, wpi_rfreset, sc);
+
+       WPI_LOCK_INIT(sc);
+
+       callout_init(&sc->calib_to);
+       callout_init(&sc->watchdog_to);
+
+       if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) {
+               device_printf(dev, "chip is in D%d power mode "
+                   "-- setting to D0\n", pci_get_powerstate(dev));
+               pci_set_powerstate(dev, PCI_POWERSTATE_D0);
+       }
+
+       /* disable the retry timeout register */
+       pci_write_config(dev, 0x41, 0, 1);
+
+       /* enable bus-mastering */
+       pci_enable_busmaster(dev);
+
+       sc->mem_rid = PCIR_BAR(0);
+       sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mem_rid,
+           RF_ACTIVE);
+       if (sc->mem == NULL) {
+               device_printf(dev, "could not allocate memory resource\n");
+               error = ENOMEM;
+               goto fail;
+       }
+
+       sc->sc_st = rman_get_bustag(sc->mem);
+       sc->sc_sh = rman_get_bushandle(sc->mem);
+
+       sc->irq_rid = 0;
+       sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid,
+           RF_ACTIVE | RF_SHAREABLE);
+       if (sc->irq == NULL) {
+               device_printf(dev, "could not allocate interrupt resource\n");
+               error = ENOMEM;
+               goto fail;
+       }
+
+       /*
+        * Allocate DMA memory for firmware transfers.
+        */
+       if ((error = wpi_alloc_fwmem(sc)) != 0) {
+               kprintf(": could not allocate firmware memory\n");
+               error = ENOMEM;
+               goto fail;
+       }
+
+       /*
+        * 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;
+       }
+
+       /* tx data queues  - 4 for QoS purposes */
+       for (ac = 0; ac < WME_NUM_AC; ac++) {
+               error = wpi_alloc_tx_ring(sc, &sc->txq[ac], WPI_TX_RING_COUNT, ac);
+               if (error != 0) {
+                   device_printf(dev, "could not allocate Tx ring %d\n",ac);
+                   goto fail;
+               }
+       }
+
+       /* command queue to talk to the card's firmware */
+       error = wpi_alloc_tx_ring(sc, &sc->cmdq, WPI_CMD_RING_COUNT, 4);
+       if (error != 0) {
+               device_printf(dev, "could not allocate command ring\n");
+               goto fail;
+       }
+
+       /* receive data queue */
+       error = wpi_alloc_rx_ring(sc, &sc->rxq);
+       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 if_alloc()\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_MONITOR           /* monitor mode supported */
+               | IEEE80211_C_TXPMGT            /* tx power management */
+               | IEEE80211_C_SHSLOT            /* short slot time supported */
+               | 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
+               ;
+
+       /*
+        * Read in the eeprom and also setup the channels for
+        * net80211. We don't set the rates as net80211 does this for us
+        */
+       wpi_read_eeprom(sc, macaddr);
+
+       if (bootverbose || WPI_DEBUG_SET) {
+           device_printf(sc->sc_dev, "Regulatory Domain: %.4s\n", sc->domain);
+           device_printf(sc->sc_dev, "Hardware Type: %c\n",
+                         sc->type > 1 ? 'B': '?');
+           device_printf(sc->sc_dev, "Hardware Revision: %c\n",
+                         ((le16toh(sc->rev) & 0xf0) == 0xd0) ? 'D': '?');
+           device_printf(sc->sc_dev, "SKU %s support 802.11a\n",
+                         supportsa ? "does" : "does not");
+
+           /* XXX hw_config uses the PCIDEV for the Hardware rev. Must check
+              what sc->rev really represents - benjsc 20070615 */
+       }
+
+       if_initname(ifp, device_get_name(dev), device_get_unit(dev));
+       ifp->if_softc = sc;
+       ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
+       ifp->if_init = wpi_init;
+       ifp->if_ioctl = wpi_ioctl;
+       ifp->if_start = wpi_start;
+       ifq_set_maxlen(&ifp->if_snd, IFQ_MAXLEN);
+       ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN;
+       ifq_set_ready(&ifp->if_snd);
+
+       ieee80211_ifattach(ic, macaddr);
+       /* override default methods */
+       ic->ic_node_alloc = wpi_node_alloc;
+       ic->ic_newassoc = wpi_newassoc;
+       ic->ic_raw_xmit = wpi_raw_xmit;
+       ic->ic_wme.wme_update = wpi_wme_update;
+       ic->ic_scan_start = wpi_scan_start;
+       ic->ic_scan_end = wpi_scan_end;
+       ic->ic_set_channel = wpi_set_channel;
+       ic->ic_scan_curchan = wpi_scan_curchan;
+       ic->ic_scan_mindwell = wpi_scan_mindwell;
+
+       ic->ic_vap_create = wpi_vap_create;
+       ic->ic_vap_delete = wpi_vap_delete;
+
+       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);
+
+       /*
+        * Hook our interrupt after all initialization is complete.
+        */
+       error = bus_setup_intr(dev, sc->irq, INTR_MPSAFE,
+           wpi_intr, sc, &sc->sc_ih, NULL);
+       if (error != 0) {
+               device_printf(dev, "could not set up interrupt\n");
+               goto fail;
+       }
+
+       if (bootverbose)
+               ieee80211_announce(ic);
+#ifdef XXX_DEBUG
+       ieee80211_announce_channels(ic);
+#endif
+       return 0;
+
+fail:  wpi_detach(dev);
+       return ENXIO;
+}
+
+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 ac;
+
+       if (ifp != NULL) {
+               ic = ifp->if_l2com;
+
+               ieee80211_draintask(ic, &sc->sc_restarttask);
+               ieee80211_draintask(ic, &sc->sc_radiotask);
+               wpi_stop(sc);
+               callout_stop(&sc->watchdog_to);
+               callout_stop(&sc->calib_to);
+               ieee80211_ifdetach(ic);
+       }
+
+       WPI_LOCK(sc);
+       if (sc->txq[0].data_dmat) {
+               for (ac = 0; ac < WME_NUM_AC; ac++)
+                       wpi_free_tx_ring(sc, &sc->txq[ac]);
+
+               wpi_free_tx_ring(sc, &sc->cmdq);
+               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);
+       WPI_UNLOCK(sc);
+
+       if (sc->irq != NULL) {
+               bus_teardown_intr(dev, sc->irq, sc->sc_ih);
+               bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq);
+       }
+
+       if (sc->mem != NULL)
+               bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem);
+
+       if (ifp != NULL)
+               if_free(ifp);
+
+       WPI_LOCK_DESTROY(sc);
+
+       return 0;
+}
+
+static struct ieee80211vap *
+wpi_vap_create(struct ieee80211com *ic,
+       const char name[IFNAMSIZ], int unit, int opmode, int flags,
+       const uint8_t bssid[IEEE80211_ADDR_LEN],
+       const uint8_t mac[IEEE80211_ADDR_LEN])
+{
+       struct wpi_vap *wvp;
+       struct ieee80211vap *vap;
+
+       if (!TAILQ_EMPTY(&ic->ic_vaps))         /* only one at a time */
+               return NULL;
+       wvp = (struct wpi_vap *) kmalloc(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);
+       /* override with driver methods */
+       wvp->newstate = vap->iv_newstate;
+       vap->iv_newstate = wpi_newstate;
+
+       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);
+
+       ieee80211_ratectl_deinit(vap);
+       ieee80211_vap_detach(vap);
+       kfree(wvp, M_80211_VAP);
+}
+
+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. Due to limitations of the FreeBSD dma subsystem as of 20071217,
+ * 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 flags)
+{
+       int error;
+       bus_size_t align;
+       bus_size_t reqsize;
+
+       DPRINTFN(WPI_DEBUG_DMA,
+           ("Size: %zd - alignment %zd\n", size, alignment));
+
+       dma->size = size;
+       dma->tag = NULL;
+
+       if (alignment > 4096) {
+               align = PAGE_SIZE;
+               reqsize = size + alignment;
+       } else {
+               align = alignment;
+               reqsize = size;
+       }
+       error = bus_dma_tag_create(dma->tag, align,
+           0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR,
+           NULL, NULL, reqsize,
+           1, reqsize, flags,
+           &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_start,
+           flags | BUS_DMA_ZERO, &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_start,
+           reqsize,  wpi_dma_map_addr, &dma->paddr_start, flags);
+
+       /* Save the original pointers so we can free all the memory */
+       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);
+       return error;
+}
+
+static void
+wpi_dma_contig_free(struct wpi_dma_info *dma)
+{
+       if (dma->tag) {
+               if (dma->map != NULL) {
+                       if (dma->paddr_start != 0) {
+                               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_start, dma->map);
+               }
+               bus_dma_tag_destroy(dma->tag);
+       }
+}
+
+/*
+ * Allocate a shared page between host and NIC.
+ */
+static int
+wpi_alloc_shared(struct wpi_softc *sc)
+{
+       int error;
+
+       error = wpi_dma_contig_alloc(sc, &sc->shared_dma,
+           (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_free_shared(struct wpi_softc *sc)
+{
+       wpi_dma_contig_free(&sc->shared_dma);
+}
+
+static int
+wpi_alloc_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring)
+{
+
+       int i, error;
+
+       ring->cur = 0;
+
+       error = wpi_dma_contig_alloc(sc, &ring->desc_dma,
+           (void **)&ring->desc, WPI_RX_RING_COUNT * sizeof (uint32_t),
+           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;
+       }
+
+        error = bus_dma_tag_create(ring->data_dmat, 1, 0,
+           BUS_SPACE_MAXADDR_32BIT,
+            BUS_SPACE_MAXADDR, NULL, NULL, MJUMPAGESIZE, 1,
+            MCLBYTES, BUS_DMA_NOWAIT, &ring->data_dmat);
+        if (error != 0) {
+                device_printf(sc->sc_dev,
+                   "%s: bus_dma_tag_create_failed, error %d\n",
+                   __func__, error);
+                goto fail;
+        }
+
+       /*
+        * Setup 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: bus_dmamap_create failed, error %d\n",
+                           __func__, error);
+                       goto fail;
+               }
+               m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
+               if (m == NULL) {
+                       device_printf(sc->sc_dev,
+                          "%s: could not allocate rx mbuf\n", __func__);
+                       error = ENOMEM;
+                       goto fail;
+               }
+               /* map page */
+               error = bus_dmamap_load(ring->data_dmat, data->map,
+                   mtod(m, caddr_t), MCLBYTES,
+                   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(m);
+                       error = ENOMEM; /* XXX unique code */
+                       goto fail;
+               }
+               bus_dmamap_sync(ring->data_dmat, data->map,
+                   BUS_DMASYNC_PREWRITE);
+
+               data->m = m;
+               ring->desc[i] = htole32(paddr);
+       }
+       bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
+           BUS_DMASYNC_PREWRITE);
+       return 0;
+fail:
+       wpi_free_rx_ring(sc, ring);
+       return error;
+}
+
+static void
+wpi_reset_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring)
+{
+       int ntries;
+
+       wpi_mem_lock(sc);
+
+       WPI_WRITE(sc, WPI_RX_CONFIG, 0);
+
+       for (ntries = 0; ntries < 100; ntries++) {
+               if (WPI_READ(sc, WPI_RX_STATUS) & WPI_RX_IDLE)
+                       break;
+               DELAY(10);
+       }
+
+       wpi_mem_unlock(sc);
+
+#ifdef WPI_DEBUG
+       if (ntries == 100 && wpi_debug > 0)
+               device_printf(sc->sc_dev, "timeout resetting Rx ring\n");
+#endif
+
+       ring->cur = 0;
+}
+
+static void
+wpi_free_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring)
+{
+       int i;
+
+       wpi_dma_contig_free(&ring->desc_dma);
+
+       for (i = 0; i < WPI_RX_RING_COUNT; i++)
+               if (ring->data[i].m != NULL)
+                       m_freem(ring->data[i].m);
+}
+
+static int
+wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, int count,
+       int qid)
+{
+       struct wpi_tx_data *data;
+       int i, error;
+
+       ring->qid = qid;
+       ring->count = count;
+       ring->queued = 0;
+       ring->cur = 0;
+       ring->data = NULL;
+
+       error = wpi_dma_contig_alloc(sc, &ring->desc_dma,
+               (void **)&ring->desc, count * sizeof (struct wpi_tx_desc),
+               WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT);
+
+       if (error != 0) {
+           device_printf(sc->sc_dev, "could not allocate tx dma memory\n");
+           goto fail;
+       }
+
+       /* update shared page with ring's base address */
+       sc->shared->txbase[qid] = htole32(ring->desc_dma.paddr);
+
+       error = wpi_dma_contig_alloc(sc, &ring->cmd_dma, (void **)&ring->cmd,
+               count * sizeof (struct wpi_tx_cmd), WPI_RING_DMA_ALIGN,
+               BUS_DMA_NOWAIT);
+
+       if (error != 0) {
+               device_printf(sc->sc_dev,
+                   "could not allocate tx command DMA memory\n");
+               goto fail;
+       }
+
+       ring->data = kmalloc(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(ring->data_dmat, 1, 0,
+           BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES,
+           WPI_MAX_SCATTER - 1, MCLBYTES, BUS_DMA_NOWAIT,
+           &ring->data_dmat);
+       if (error != 0) {
+               device_printf(sc->sc_dev, "could not create data DMA tag\n");
+               goto fail;
+       }
+
+       for (i = 0; i < count; i++) {
+               data = &ring->data[i];
+
+               error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
+               if (error != 0) {
+                       device_printf(sc->sc_dev,
+                           "could not create tx buf DMA map\n");
+                       goto fail;
+               }
+               bus_dmamap_sync(ring->data_dmat, data->map,
+                   BUS_DMASYNC_PREWRITE);
+       }
+
+       return 0;
+
+fail:
+       wpi_free_tx_ring(sc, ring);
+       return error;
+}
+
+static void
+wpi_reset_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring)
+{
+       struct wpi_tx_data *data;
+       int i, ntries;
+
+       wpi_mem_lock(sc);
+
+       WPI_WRITE(sc, WPI_TX_CONFIG(ring->qid), 0);
+       for (ntries = 0; ntries < 100; ntries++) {
+               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_unload(ring->data_dmat, data->map);
+                       m_freem(data->m);
+                       data->m = NULL;
+               }
+       }
+
+       ring->queued = 0;
+       ring->cur = 0;
+}
+
+static void
+wpi_free_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring)
+{
+       struct wpi_tx_data *data;
+       int i;
+
+       wpi_dma_contig_free(&ring->desc_dma);
+       wpi_dma_contig_free(&ring->cmd_dma);
+
+       if (ring->data != NULL) {
+               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;
+                       }
+               }
+               kfree(ring->data, M_DEVBUF);
+       }
+
+       if (ring->data_dmat != NULL)
+               bus_dma_tag_destroy(ring->data_dmat);
+}
+
+static int
+wpi_shutdown(device_t dev)
+{
+       struct wpi_softc *sc = device_get_softc(dev);
+
+       WPI_LOCK(sc);
+       wpi_stop_locked(sc);
+       wpi_unload_firmware(sc);
+       WPI_UNLOCK(sc);
+
+       return 0;
+}
+
+static int
+wpi_suspend(device_t dev)
+{
+       struct wpi_softc *sc = device_get_softc(dev);
+
+       wpi_stop(sc);
+       return 0;
+}
+
+static int
+wpi_resume(device_t dev)
+{
+       struct wpi_softc *sc = device_get_softc(dev);
+       struct ifnet *ifp = sc->sc_ifp;
+
+       pci_write_config(dev, 0x41, 0, 1);
+
+       if (ifp->if_flags & IFF_UP) {
+               wpi_init(ifp->if_softc);
+               if (ifp->if_flags & IFF_RUNNING)
+                       wpi_start(ifp);
+       }
+       return 0;
+}
+
+/* ARGSUSED */
+static struct ieee80211_node *
+wpi_node_alloc(struct ieee80211vap *vap __unused,
+       const uint8_t mac[IEEE80211_ADDR_LEN] __unused)
+{
+       struct wpi_node *wn;
+
+       wn = kmalloc(sizeof (struct wpi_node), M_80211_NODE, M_NOWAIT | M_ZERO);
+
+       return &wn->ni;
+}
+
+/**
+ * Called by net80211 when ever there is a change to 80211 state machine
+ */
+static int
+wpi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
+{
+       struct wpi_vap *wvp = WPI_VAP(vap);
+       struct ieee80211com *ic = vap->iv_ic;
+       struct ifnet *ifp = ic->ic_ifp;
+       struct wpi_softc *sc = ifp->if_softc;
+       int error;
+
+       DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__,
+               ieee80211_state_name[vap->iv_state],
+               ieee80211_state_name[nstate], sc->flags));
+
+       IEEE80211_UNLOCK(ic);
+       WPI_LOCK(sc);
+       if (nstate == IEEE80211_S_AUTH) {
+               /* The node must be registered in the firmware before auth */
+               error = wpi_auth(sc, vap);
+               if (error != 0) {
+                       device_printf(sc->sc_dev,
+                           "%s: could not move to auth state, error %d\n",
+                           __func__, error);
+               }
+       }
+       if (nstate == IEEE80211_S_RUN && vap->iv_state != IEEE80211_S_RUN) {
+               error = wpi_run(sc, vap);
+               if (error != 0) {
+                       device_printf(sc->sc_dev,
+                           "%s: could not move to run state, error %d\n",
+                           __func__, error);
+               }
+       }
+       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);
+       return wvp->newstate(vap, nstate, arg);
+}
+
+/*
+ * Grab exclusive access to NIC memory.
+ */
+static void
+wpi_mem_lock(struct wpi_softc *sc)
+{
+       int ntries;
+       uint32_t tmp;
+
+       tmp = WPI_READ(sc, WPI_GPIO_CTL);
+       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_mem_unlock(struct wpi_softc *sc)
+{
+       uint32_t tmp = WPI_READ(sc, WPI_GPIO_CTL);
+       WPI_WRITE(sc, WPI_GPIO_CTL, tmp & ~WPI_GPIO_MAC);
+}
+
+static uint32_t
+wpi_mem_read(struct wpi_softc *sc, uint16_t addr)
+{
+       WPI_WRITE(sc, WPI_READ_MEM_ADDR, WPI_MEM_4 | addr);
+       return WPI_READ(sc, WPI_READ_MEM_DATA);
+}
+
+static void
+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);
+}
+
+static void
+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);
+}
+
+/*
+ * Read data from the EEPROM.  We access EEPROM through the MAC instead of
+ * 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)
+{
+       int ntries;
+       uint32_t val;
+       uint8_t *out = data;
+
+       wpi_mem_lock(sc);
+
+       for (; len > 0; len -= 2, addr++) {
+               WPI_WRITE(sc, WPI_EEPROM_CTL, addr << 2);
+
+               for (ntries = 0; ntries < 10; ntries++) {
+                       if ((val = WPI_READ(sc, WPI_EEPROM_CTL)) & WPI_EEPROM_READY)
+                               break;
+                       DELAY(5);
+               }
+
+               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;
+}
+
+/*
+ * The firmware text and data segments are transferred to the NIC using DMA.
+ * 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)
+{
+       int error, ntries;
+
+       DPRINTFN(WPI_DEBUG_HW,("Loading microcode  size 0x%x\n", size));
+
+       size /= sizeof(uint32_t);
+
+       wpi_mem_lock(sc);
+
+       wpi_mem_write_region_4(sc, WPI_MEM_UCODE_BASE,
+           (const uint32_t *)fw, size);
+
+       wpi_mem_write(sc, WPI_MEM_UCODE_SRC, 0);
+       wpi_mem_write(sc, WPI_MEM_UCODE_DST, WPI_FW_TEXT);
+       wpi_mem_write(sc, WPI_MEM_UCODE_SIZE, size);
+
+       /* 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);
+       }
+       if (ntries == 1000) {
+               device_printf(sc->sc_dev, "timeout transferring firmware\n");
+               error = ETIMEDOUT;
+       }
+
+       /* start the microcode executing */
+       wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_ENABLE);
+
+       wpi_mem_unlock(sc);
+
+       return (error);
+}
+
+static void
+wpi_rx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc,
+       struct wpi_rx_data *data)
+{
+       struct ifnet *ifp = sc->sc_ifp;
+       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_node *ni;
+       struct mbuf *m, *mnew;
+       bus_addr_t paddr;
+       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");
+               ifp->if_ierrors++;
+               return;
+       }
+
+       head = (struct wpi_rx_head *)((caddr_t)(stat + 1) + stat->len);
+       tail = (struct wpi_rx_tail *)((caddr_t)(head + 1) + le16toh(head->len));
+
+       DPRINTFN(WPI_DEBUG_RX, ("rx intr: idx=%d len=%d stat len=%d rssi=%d "
+           "rate=%x chan=%d tstamp=%ju\n", ring->cur, le32toh(desc->len),
+           le16toh(head->len), (int8_t)stat->rssi, head->rate, head->chan,
+           (uintmax_t)le64toh(tail->tstamp)));
+
+       /* discard Rx frames with bad CRC early */
+       if ((le32toh(tail->flags) & WPI_RX_NOERROR) != WPI_RX_NOERROR) {
+               DPRINTFN(WPI_DEBUG_RX, ("%s: rx flags error %x\n", __func__,
+                   le32toh(tail->flags)));
+               ifp->if_ierrors++;
+               return;
+       }
+       if (le16toh(head->len) < sizeof (struct ieee80211_frame)) {
+               DPRINTFN(WPI_DEBUG_RX, ("%s: frame too short: %d\n", __func__,
+                   le16toh(head->len)));
+               ifp->if_ierrors++;
+               return;
+       }
+
+       /* XXX don't need mbuf, just dma buffer */
+       mnew = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
+       if (mnew == NULL) {
+               DPRINTFN(WPI_DEBUG_RX, ("%s: no mbuf to restock ring\n",
+                   __func__));
+               ifp->if_ierrors++;
+               return;
+       }
+       error = bus_dmamap_load(ring->data_dmat, data->map,
+           mtod(mnew, caddr_t), MCLBYTES,
+           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(mnew);
+               ifp->if_ierrors++;
+               return;
+       }
+       bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE);
+
+       /* finalize mbuf and swap in new one */
+       m = data->m;
+       m->m_pkthdr.rcvif = ifp;
+       m->m_data = (caddr_t)(head + 1);
+       m->m_pkthdr.len = m->m_len = le16toh(head->len);
+
+       data->m = mnew;
+       /* update Rx descriptor */
+       ring->desc[ring->cur] = htole32(paddr);
+
+       if (ieee80211_radiotap_active(ic)) {
+               struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap;
+
+               tap->wr_flags = 0;
+               tap->wr_chan_freq =
+                       htole16(ic->ic_channels[head->chan].ic_freq);
+               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;
+               switch (head->rate) {
+               /* CCK rates */
+               case  10: tap->wr_rate =   2; break;
+               case  20: tap->wr_rate =   4; break;
+               case  55: tap->wr_rate =  11; break;
+               case 110: tap->wr_rate =  22; break;
+               /* OFDM rates */
+               case 0xd: tap->wr_rate =  12; break;
+               case 0xf: tap->wr_rate =  18; break;
+               case 0x5: tap->wr_rate =  24; break;
+               case 0x7: tap->wr_rate =  36; break;
+               case 0x9: tap->wr_rate =  48; break;
+               case 0xb: tap->wr_rate =  72; break;
+               case 0x1: tap->wr_rate =  96; break;
+               case 0x3: tap->wr_rate = 108; break;
+               /* unknown rate: should not happen */
+               default:  tap->wr_rate =   0;
+               }
+               if (le16toh(head->flags) & 0x4)
+                       tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
+       }
+
+       WPI_UNLOCK(sc);
+
+       ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *));
+       if (ni != NULL) {
+               (void) ieee80211_input(ni, m, stat->rssi, 0);
+               ieee80211_free_node(ni);
+       } else
+               (void) ieee80211_input_all(ic, m, stat->rssi, 0);
+
+       WPI_LOCK(sc);
+}
+
+static void
+wpi_tx_intr(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 *txdata = &ring->data[desc->idx];
+       struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1);
+       struct ieee80211_node *ni = txdata->ni;
+       struct ieee80211vap *vap = ni->ni_vap;
+       int retrycnt = 0;
+
+       DPRINTFN(WPI_DEBUG_TX, ("tx done: qid=%d idx=%d retries=%d nkill=%d "
+           "rate=%x duration=%d status=%x\n", desc->qid, desc->idx,
+           stat->ntries, stat->nkill, stat->rate, le32toh(stat->duration),
+           le32toh(stat->status)));
+
+       /*
+        * 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
+        */
+       if (stat->ntries > 0) {
+               DPRINTFN(WPI_DEBUG_TX, ("%d retries\n", stat->ntries));
+               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)
+               ifp->if_oerrors++;
+       else
+               ifp->if_opackets++;
+
+       bus_dmamap_sync(ring->data_dmat, txdata->map, BUS_DMASYNC_POSTWRITE);
+       bus_dmamap_unload(ring->data_dmat, txdata->map);
+       /* XXX handle M_TXCB? */
+       m_freem(txdata->m);
+       txdata->m = NULL;
+       ieee80211_free_node(txdata->ni);
+       txdata->ni = NULL;
+
+       ring->queued--;
+
+       sc->sc_tx_timer = 0;
+       ifp->if_flags &= ~IFF_OACTIVE;
+       wpi_start_locked(ifp);
+}
+
+static void
+wpi_cmd_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc)
+{
+       struct wpi_tx_ring *ring = &sc->cmdq;
+       struct wpi_tx_data *data;
+
+       DPRINTFN(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 a mbuf, free it */
+       if (data->m != NULL) {
+               bus_dmamap_unload(ring->data_dmat, data->map);
+               m_freem(data->m);
+               data->m = NULL;
+       }
+
+       sc->flags &= ~WPI_FLAG_BUSY;
+       wakeup(&ring->cmd[desc->idx]);
+}
+
+static void
+wpi_notif_intr(struct wpi_softc *sc)
+{
+       struct ifnet *ifp = sc->sc_ifp;
+       struct ieee80211com *ic = ifp->if_l2com;
+       struct wpi_rx_desc *desc;
+       struct wpi_rx_data *data;
+       uint32_t hw;
+
+       hw = le32toh(sc->shared->next);
+       while (sc->rxq.cur != hw) {
+               data = &sc->rxq.data[sc->rxq.cur];
+               desc = (void *)data->m->m_ext.ext_buf;
+
+               DPRINTFN(WPI_DEBUG_NOTIFY,
+                        ("notify qid=%x idx=%d flags=%x type=%d len=%d\n",
+                         desc->qid,
+                         desc->idx,
+                         desc->flags,
+                         desc->type,
+                         le32toh(desc->len)));
+
+               if (!(desc->qid & 0x80))        /* reply to a command */
+                       wpi_cmd_intr(sc, desc);
+
+               switch (desc->type) {
+               case WPI_RX_DONE:
+                       /* a 802.11 frame was received */
+                       wpi_rx_intr(sc, desc, data);
+                       break;
+
+               case WPI_TX_DONE:
+                       /* a 802.11 frame has been transmitted */
+                       wpi_tx_intr(sc, desc);
+                       break;
+
+               case WPI_UC_READY:
+               {
+                       struct wpi_ucode_info *uc =
+                               (struct wpi_ucode_info *)(desc + 1);
+
+                       /* the microcontroller is ready */
+                       DPRINTF(("microcode alive notification version %x "
+                               "alive %x\n", le32toh(uc->version),
+                               le32toh(uc->valid)));
+
+                       if (le32toh(uc->valid) != 1) {
+                               device_printf(sc->sc_dev,
+                                   "microcontroller initialization failed\n");
+                               wpi_stop_locked(sc);
+                       }
+                       break;
+               }
+               case WPI_STATE_CHANGED:
+               {
+                       uint32_t *status = (uint32_t *)(desc + 1);
+
+                       /* enabled/disabled notification */
+                       DPRINTF(("state changed to %x\n", le32toh(*status)));
+
+                       if (le32toh(*status) & 1) {
+                               device_printf(sc->sc_dev,
+                                   "Radio transmitter is switched off\n");
+                               sc->flags |= WPI_FLAG_HW_RADIO_OFF;
+                               ifp->if_flags &= ~IFF_RUNNING;
+                               /* Disable firmware commands */
+                               WPI_WRITE(sc, WPI_UCODE_SET, WPI_DISABLE_CMD);
+                       }
+                       break;
+               }
+               case WPI_START_SCAN:
+               {
+#ifdef WPI_DEBUG
+                       struct wpi_start_scan *scan =
+                               (struct wpi_start_scan *)(desc + 1);
+#endif
+
+                       DPRINTFN(WPI_DEBUG_SCANNING,
+                                ("scanning channel %d status %x\n",
+                           scan->chan, le32toh(scan->status)));
+                       break;
+               }
+               case WPI_STOP_SCAN:
+               {
+#ifdef WPI_DEBUG
+                       struct wpi_stop_scan *scan =
+                               (struct wpi_stop_scan *)(desc + 1);
+#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;
+                       ieee80211_scan_next(vap);
+                       break;
+               }
+               case WPI_MISSED_BEACON:
+               {
+                       struct wpi_missed_beacon *beacon =
+                               (struct wpi_missed_beacon *)(desc + 1);
+                       struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
+
+                       if (le32toh(beacon->consecutive) >=
+                           vap->iv_bmissthreshold) {
+                               DPRINTF(("Beacon miss: %u >= %u\n",
+                                        le32toh(beacon->consecutive),
+                                        vap->iv_bmissthreshold));
+                               ieee80211_beacon_miss(ic);
+                       }
+                       break;
+               }
+               }
+
+               sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT;
+       }
+
+       /* tell the firmware what we have processed */
+       hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1;
+       WPI_WRITE(sc, WPI_RX_WIDX, hw & ~7);
+}
+
+static void
+wpi_intr(void *arg)
+{
+       struct wpi_softc *sc = arg;
+       uint32_t r;
+
+       WPI_LOCK(sc);
+
+       r = WPI_READ(sc, WPI_INTR);
+       if (r == 0 || r == 0xffffffff) {
+               WPI_UNLOCK(sc);
+               return;
+       }
+
+       /* disable interrupts */
+       WPI_WRITE(sc, WPI_MASK, 0);
+       /* ack interrupts */
+       WPI_WRITE(sc, WPI_INTR, r);
+
+       if (r & (WPI_SW_ERROR | WPI_HW_ERROR)) {
+               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, "fatal firmware error\n");
+               DPRINTFN(6,("(%s)\n", (r & WPI_SW_ERROR) ? "(Software Error)" :
+                               "(Hardware Error)"));
+               if (vap != NULL)
+                       ieee80211_cancel_scan(vap);
+               ieee80211_runtask(ic, &sc->sc_restarttask);
+               sc->flags &= ~WPI_FLAG_BUSY;
+               WPI_UNLOCK(sc);
+               return;
+       }
+
+       if (r & WPI_RX_INTR)
+               wpi_notif_intr(sc);
+
+       if (r & WPI_ALIVE_INTR) /* firmware initialized */
+               wakeup(sc);
+
+       /* re-enable interrupts */
+       if (sc->sc_ifp->if_flags & IFF_UP)
+               WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK);
+
+       WPI_UNLOCK(sc);
+}
+
+static uint8_t
+wpi_plcp_signal(int rate)
+{
+       switch (rate) {
+       /* CCK rates (returned values are device-dependent) */
+       case 2:         return 10;
+       case 4:         return 20;
+       case 11:        return 55;
+       case 22:        return 110;
+
+       /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */
+       /* 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;
+
+       /* unsupported rates (should not get there) */
+       default:        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 and acutally put
+ * 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 *m0, struct ieee80211_node *ni,
+       int ac)
+{
+       struct ieee80211vap *vap = ni->ni_vap;
+       struct ifnet *ifp = sc->sc_ifp;
+       struct ieee80211com *ic = ifp->if_l2com;
+       const struct chanAccParams *cap = &ic->ic_wme.wme_chanParams;
+       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;
+       const struct ieee80211_txparam *tp;
+       struct ieee80211_key *k;
+       struct mbuf *mnew;
+       int i, error, nsegs, rate, hdrlen, ismcast;
+       bus_dma_segment_t segs[WPI_MAX_SCATTER];
+
+       desc = &ring->desc[ring->cur];
+       data = &ring->data[ring->cur];
+
+       wh = mtod(m0, struct ieee80211_frame *);
+
+       hdrlen = ieee80211_hdrsize(wh);
+       ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1);
+
+       if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
+               k = ieee80211_crypto_encap(ni, m0);
+               if (k == NULL) {
+                       m_freem(m0);
+                       return ENOBUFS;
+               }
+               /* packet header may have moved, reset our local pointer */
+               wh = mtod(m0, struct ieee80211_frame *);
+       }
+
+       cmd = &ring->cmd[ring->cur];
+       cmd->code = WPI_CMD_TX_DATA;
+       cmd->flags = 0;
+       cmd->qid = ring->qid;
+       cmd->idx = ring->cur;
+
+       tx = (struct wpi_cmd_data *)cmd->data;
+       tx->flags = htole32(WPI_TX_AUTO_SEQ);
+       tx->timeout = htole16(0);
+       tx->ofdm_mask = 0xff;
+       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);
+
+       if (!ismcast) {
+               if ((ni->ni_flags & IEEE80211_NODE_QOS) == 0 ||
+                   !cap->cap_wmeParams[ac].wmep_noackPolicy)
+                       tx->flags |= htole32(WPI_TX_NEED_ACK);
+               if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) {
+                       tx->flags |= htole32(WPI_TX_NEED_RTS|WPI_TX_FULL_TXOP);
+                       tx->rts_ntries = 7;
+               }
+       }
+       /* pick a rate */
+       tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)];
+       if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_MGT) {
+               uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
+               /* tell h/w to set timestamp in probe responses */
+               if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP)
+                       tx->flags |= htole32(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);
+
+       /* be very persistant at sending frames out */
+#if 0
+       tx->data_ntries = tp->maxretry;
+#else
+       tx->data_ntries = 30;           /* XXX way too high */
+#endif
+
+       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_WEP)
+                       tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP;
+
+               ieee80211_radiotap_tx(vap, m0);
+       }
+
+       /* save and trim IEEE802.11 header */
+       m_copydata(m0, 0, hdrlen, (caddr_t)&tx->wh);
+       m_adj(m0, hdrlen);
+
+       error = bus_dmamap_load_mbuf_segment(ring->data_dmat, data->map, m0, segs,
+           1, &nsegs, BUS_DMA_NOWAIT);
+       if (error != 0 && error != EFBIG) {
+               device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
+                   error);
+               m_freem(m0);
+               return error;
+       }
+       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;
+
+               error = bus_dmamap_load_mbuf_segment(ring->data_dmat, data->map,
+                   m0, segs, 1, &nsegs, BUS_DMA_NOWAIT);
+               if (error != 0) {
+                       device_printf(sc->sc_dev,
+                           "could not map mbuf (error %d)\n", error);
+                       m_freem(m0);
+                       return error;
+               }
+       }
+
+       data->m = m0;
+       data->ni = ni;
+
+       DPRINTFN(WPI_DEBUG_TX, ("sending data: qid=%d idx=%d len=%d nsegs=%d\n",
+           ring->qid, ring->cur, m0->m_pkthdr.len, nsegs));
+
+       /* first scatter/gather segment is used by the tx data command */
+       desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 |
+           (1 + nsegs) << 24);
+       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);
+       }
+
+       bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE);
+       bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
+           BUS_DMASYNC_PREWRITE);
+
+       ring->queued++;
+
+       /* kick ring */
+       ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT;
+       WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur);
+
+       return 0;
+}
+
+/**
+ * Process data waiting to be sent on the IFNET output queue
+ */
+static void
+wpi_start(struct ifnet *ifp)
+{
+       struct wpi_softc *sc = ifp->if_softc;
+
+       WPI_LOCK(sc);
+       wpi_start_locked(ifp);
+       WPI_UNLOCK(sc);
+}
+
+static void
+wpi_start_locked(struct ifnet *ifp)
+{
+       struct wpi_softc *sc = ifp->if_softc;
+       struct ieee80211_node *ni;
+       struct mbuf *m;
+       int ac;
+
+       WPI_LOCK_ASSERT(sc);
+
+       if ((ifp->if_flags & IFF_RUNNING) == 0) {
+               ifq_purge(&ifp->if_snd);
+               return;
+       }
+
+       for (;;) {
+               IF_DEQUEUE(&ifp->if_snd, m);
+               if (m == NULL)
+                       break;
+               ac = M_WME_GETAC(m);
+               if (sc->txq[ac].queued > sc->txq[ac].count - 8) {
+                       /* there is no place left in this ring */
+                       ifq_prepend(&ifp->if_snd, m);
+                       ifp->if_flags |= IFF_OACTIVE;
+                       break;
+               }
+               ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
+               if (wpi_tx_data(sc, m, ni, ac) != 0) {
+                       ieee80211_free_node(ni);
+                       ifp->if_oerrors++;
+                       break;
+               }
+               sc->sc_tx_timer = 5;
+       }
+}
+
+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;
+
+       /* prevent management frames from being sent if we're not ready */
+       if (!(ifp->if_flags & IFF_RUNNING)) {
+               m_freem(m);
+               ieee80211_free_node(ni);
+               return ENETDOWN;
+       }
+       WPI_LOCK(sc);
+
+       /* management frames go into ring 0 */
+       if (sc->txq[0].queued > sc->txq[0].count - 8) {
+               ifp->if_flags |= IFF_OACTIVE;
+               m_freem(m);
+               WPI_UNLOCK(sc);
+               ieee80211_free_node(ni);
+               return ENOBUFS;         /* XXX */
+       }
+
+       ifp->if_opackets++;
+       if (wpi_tx_data(sc, m, ni, 0) != 0)
+               goto bad;
+       sc->sc_tx_timer = 5;
+       callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc);
+
+       WPI_UNLOCK(sc);
+       return 0;
+bad:
+       ifp->if_oerrors++;
+       WPI_UNLOCK(sc);
+       ieee80211_free_node(ni);
+       return EIO;             /* XXX */
+}
+
+static int
+wpi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data, struct ucred *cred)
+{
+       struct wpi_softc *sc = ifp->if_softc;
+       struct ieee80211com *ic = ifp->if_l2com;
+       struct ifreq *ifr = (struct ifreq *) data;
+       int error = 0, startall = 0;
+
+       switch (cmd) {
+       case SIOCSIFFLAGS:
+               WPI_LOCK(sc);
+               if ((ifp->if_flags & IFF_UP)) {
+                       if (!(ifp->if_flags & IFF_RUNNING)) {
+                               wpi_init_locked(sc, 0);
+                               startall = 1;
+                       }
+               } else if ((ifp->if_flags & IFF_RUNNING) ||
+                          (sc->flags & WPI_FLAG_HW_RADIO_OFF))
+                       wpi_stop_locked(sc);
+               WPI_UNLOCK(sc);
+               if (startall)
+                       ieee80211_start_all(ic);
+               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;
+       }
+       return error;
+}
+
+/*
+ * 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, int size, int async)
+{
+       struct wpi_tx_ring *ring = &sc->cmdq;
+       struct wpi_tx_desc *desc;
+       struct wpi_tx_cmd *cmd;
+
+#ifdef WPI_DEBUG
+       if (!async) {
+               WPI_LOCK_ASSERT(sc);
+       }
+#endif
+
+       DPRINTFN(WPI_DEBUG_CMD,("wpi_cmd %d size %d async %d\n", 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];
+       cmd = &ring->cmd[ring->cur];
+
+       cmd->code = code;
+       cmd->flags = 0;
+       cmd->qid = ring->qid;
+       cmd->idx = ring->cur;
+       memcpy(cmd->data, buf, size);
+
+       desc->flags = htole32(WPI_PAD32(size) << 28 | 1 << 24);
+       desc->segs[0].addr = htole32(ring->cmd_dma.paddr +
+               ring->cur * sizeof (struct wpi_tx_cmd));
+       desc->segs[0].len  = htole32(4 + size);
+
+       /* kick cmd ring */
+       ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT;
+       WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur);
+
+       if (async) {
+               sc->flags &= ~ WPI_FLAG_BUSY;
+               return 0;
+       }
+
+       return lksleep(cmd, &sc->sc_lock, 0, "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 h/w multi-rate retries.
+ */
+static int
+wpi_mrr_setup(struct wpi_softc *sc)
+{
+       struct ifnet *ifp = sc->sc_ifp;
+       struct ieee80211com *ic = ifp->if_l2com;
+       struct wpi_mrr_setup mrr;
+       int i, error;
+
+       memset(&mrr, 0, sizeof (struct wpi_mrr_setup));
+
+       /* CCK rates (not used with 802.11a) */
+       for (i = WPI_CCK1; i <= WPI_CCK11; i++) {
+               mrr.rates[i].flags = 0;
+               mrr.rates[i].signal = wpi_ridx_to_plcp[i];
+               /* fallback to the immediate lower CCK rate (if any) */
+               mrr.rates[i].next = (i == WPI_CCK1) ? WPI_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_OFDM6; i <= WPI_OFDM54; i++) {
+               mrr.rates[i].flags = 0;
+               mrr.rates[i].signal = wpi_ridx_to_plcp[i];
+               /* fallback to the immediate lower OFDM rate (if any) */
+               /* we allow fallback from OFDM/6 to CCK/2 in 11b/g mode */
+               mrr.rates[i].next = (i == WPI_OFDM6) ?
+                   ((ic->ic_curmode == IEEE80211_MODE_11A) ?
+                       WPI_OFDM6 : WPI_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);
+       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);
+       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 void
+wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on)
+{
+       struct wpi_cmd_led led;
+
+       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 void
+wpi_enable_tsf(struct wpi_softc *sc, struct ieee80211_node *ni)
+{
+       struct wpi_cmd_tsf tsf;
+       uint64_t val, mod;
+
+       memset(&tsf, 0, sizeof tsf);
+       memcpy(&tsf.tstamp, ni->ni_tstamp.data, 8);
+       tsf.bintval = htole16(ni->ni_intval);
+       tsf.lintval = htole16(10);
+
+       /* compute remaining time until next beacon */
+       val = (uint64_t)ni->ni_intval  * 1024;  /* msec -> usec */
+       mod = le64toh(tsf.tstamp) % val;
+       tsf.binitval = htole32((uint32_t)(val - mod));
+
+       if (wpi_cmd(sc, WPI_CMD_TSF, &tsf, sizeof tsf, 1) != 0)
+               device_printf(sc->sc_dev, "could not enable TSF\n");
+}
+
+#if 0
+/*
+ * Build a beacon frame that the firmware will broadcast periodically in
+ * IBSS or HostAP modes.
+ */
+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 wpi_tx_ring *ring = &sc->cmdq;
+       struct wpi_tx_desc *desc;
+       struct wpi_tx_data *data;
+       struct wpi_tx_cmd *cmd;
+       struct wpi_cmd_beacon *bcn;
+       struct ieee80211_beacon_offsets bo;
+       struct mbuf *m0;
+       bus_addr_t physaddr;
+       int error;
+
+       desc = &ring->desc[ring->cur];
+       data = &ring->data[ring->cur];
+
+       m0 = ieee80211_beacon_alloc(ic, ni, &bo);
+       if (m0 == NULL) {
+               device_printf(sc->sc_dev, "could not allocate beacon frame\n");
+               return ENOMEM;
+       }
+
+       cmd = &ring->cmd[ring->cur];
+       cmd->code = WPI_CMD_SET_BEACON;
+       cmd->flags = 0;
+       cmd->qid = ring->qid;
+       cmd->idx = ring->cur;
+
+       bcn = (struct wpi_cmd_beacon *)cmd->data;
+       memset(bcn, 0, sizeof (struct wpi_cmd_beacon));
+       bcn->id = WPI_ID_BROADCAST;
+       bcn->ofdm_mask = 0xff;
+       bcn->cck_mask = 0x0f;
+       bcn->lifetime = htole32(WPI_LIFETIME_INFINITE);
+       bcn->len = htole16(m0->m_pkthdr.len);
+       bcn->rate = (ic->ic_curmode == IEEE80211_MODE_11A) ?
+               wpi_plcp_signal(12) : wpi_plcp_signal(2);
+       bcn->flags = htole32(WPI_TX_AUTO_SEQ | WPI_TX_INSERT_TSTAMP);
+
+       /* save and trim IEEE802.11 header */
+       m_copydata(m0, 0, sizeof (struct ieee80211_frame), (caddr_t)&bcn->wh);
+       m_adj(m0, sizeof (struct ieee80211_frame));
+
+       /* assume beacon frame is contiguous */
+       error = bus_dmamap_load(ring->data_dmat, data->map, mtod(m0, void *),
+           m0->m_pkthdr.len, wpi_dma_map_addr, &physaddr, 0);
+       if (error != 0) {
+               device_printf(sc->sc_dev, "could not map beacon\n");
+               m_freem(m0);
+               return error;
+       }
+
+       data->m = m0;
+
+       /* first scatter/gather segment is used by the beacon command */
+       desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 2 << 24);
+       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_beacon));
+       desc->segs[1].addr = htole32(physaddr);
+       desc->segs[1].len  = htole32(m0->m_pkthdr.len);
+
+       /* kick cmd ring */
+       ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT;
+       WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur);
+
+       return 0;
+}
+#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;
+       struct wpi_node_info node;
+       int error;
+
+
+       /* update adapter's configuration */
+       sc->config.associd = 0;
+       sc->config.filter &= ~htole32(WPI_FILTER_BSS);
+       IEEE80211_ADDR_COPY(sc->config.bssid, ni->ni_bssid);
+       sc->config.chan = ieee80211_chan2ieee(ic, ni->ni_chan);
+       if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) {
+               sc->config.flags |= htole32(WPI_CONFIG_AUTO |
+                   WPI_CONFIG_24GHZ);
+       }
+       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, "could not configure\n");
+               return error;
+       }
+
+       /* configuration has changed, set Tx power accordingly */
+       if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) {
+               device_printf(sc->sc_dev, "could not set Tx power\n");
+               return error;
+       }
+
+       /* add default node */
+       memset(&node, 0, sizeof node);
+       IEEE80211_ADDR_COPY(node.bssid, ni->ni_bssid);
+       node.id = WPI_ID_BSS;
+       node.rate = (ic->ic_curmode == IEEE80211_MODE_11A) ?
+           wpi_plcp_signal(12) : wpi_plcp_signal(2);
+       node.action = htole32(WPI_ACTION_SET_RATE);
+       node.antenna = WPI_ANTENNA_BOTH;
+       error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1);
+       if (error != 0)
+               device_printf(sc->sc_dev, "could not add BSS node\n");
+
+       return (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;
+
+       if (vap->iv_opmode == IEEE80211_M_MONITOR) {
+               /* link LED blinks while monitoring */
+               wpi_set_led(sc, WPI_LED_LINK, 5, 5);
+               return 0;
+       }
+
+       wpi_enable_tsf(sc, ni);
+
+       /* update adapter's configuration */
+       sc->config.associd = htole16(ni->ni_associd & ~0xc000);
+       /* short preamble/slot time are negotiated when associating */
+       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);
+
+       /* XXX put somewhere HC_QOS_SUPPORT_ASSOC + HC_IBSS_START */
+
+       DPRINTF(("config chan %d flags %x\n", sc->config.chan,
+                   sc->config.flags));
+       error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, sizeof (struct
+                   wpi_config), 1);
+       if (error != 0) {
+               device_printf(sc->sc_dev, "could not update configuration\n");
+               return error;
+       }
+
+       error = wpi_set_txpower(sc, ni->ni_chan, 1);
+       if (error != 0) {
+               device_printf(sc->sc_dev, "could set txpower\n");
+               return error;
+       }
+
+       /* link LED always on while associated */
+       wpi_set_led(sc, WPI_LED_LINK, 0, 1);
+
+       /* start automatic rate control timer */
+       callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc);
+
+       return (error);
+}
+
+/*
+ * Send a scan request to the firmware.  Since this command is huge, we map it
+ * into a mbufcluster instead of using the pre-allocated set of commands. Note,
+ * much of this code is similar to that in wpi_cmd but because we must manually
+ * 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 int
+wpi_scan(struct wpi_softc *sc)
+{
+       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_scan_chan *chan;
+       struct ieee80211_frame *wh;
+       struct ieee80211_rateset *rs;
+       struct ieee80211_channel *c;
+       enum ieee80211_phymode mode;
+       uint8_t *frm;
+       int nrates, pktlen, error, i, nssid;
+       bus_addr_t physaddr;
+
+       desc = &ring->desc[ring->cur];
+       data = &ring->data[ring->cur];
+
+       data->m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
+       if (data->m == NULL) {
+               device_printf(sc->sc_dev,
+                   "could not allocate mbuf for scan command\n");
+               return ENOMEM;
+       }
+
+       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 5 msecs
+        * after sending the probe request (this helps to reduce the duration
+        * of active scans).
+        */
+       hdr->quiet = htole16(5);
+       hdr->threshold = htole16(1);
+
+       if (IEEE80211_IS_CHAN_A(ic->ic_curchan)) {
+               /* send probe requests at 6Mbps */
+               hdr->tx.rate = wpi_ridx_to_plcp[WPI_OFDM6];
+
+               /* Enable crc checking */
+               hdr->promotion = htole16(1);
+       } else {
+               hdr->flags = htole32(WPI_CONFIG_24GHZ | WPI_CONFIG_AUTO);
+               /* send probe requests at 1Mbps */
+               hdr->tx.rate = wpi_ridx_to_plcp[WPI_CCK1];
+       }
+       hdr->tx.id = WPI_ID_BROADCAST;
+       hdr->tx.lifetime = htole32(WPI_LIFETIME_INFINITE);
+       hdr->tx.flags = htole32(WPI_TX_AUTO_SEQ);
+
+       memset(hdr->scan_essids, 0, sizeof(hdr->scan_essids));
+       nssid = MIN(ss->ss_nssid, WPI_SCAN_MAX_ESSIDS);
+       for (i = 0; i < nssid; i++) {
+               hdr->scan_essids[i].id = IEEE80211_ELEMID_SSID;
+               hdr->scan_essids[i].esslen = MIN(ss->ss_ssid[i].len, 32);
+               memcpy(hdr->scan_essids[i].essid, ss->ss_ssid[i].ssid,
+                   hdr->scan_essids[i].esslen);
+#ifdef WPI_DEBUG
+               if (wpi_debug & WPI_DEBUG_SCANNING) {
+                       kprintf("Scanning Essid: ");
+                       ieee80211_print_essid(hdr->scan_essids[i].essid,
+                           hdr->scan_essids[i].esslen);
+                       kprintf("\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 *)&hdr->scan_essids[4];
+       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);
+       *(u_int16_t *)&wh->i_dur[0] = 0;        /* filled by h/w */
+       *(u_int16_t *)&wh->i_seq[0] = 0;        /* filled by h/w */
+
+       frm = (uint8_t *)(wh + 1);
+
+       /* add essid IE, the hardware will fill this in for us */
+       *frm++ = IEEE80211_ELEMID_SSID;
+       *frm++ = 0;
+
+       mode = ieee80211_chan2mode(ic->ic_curchan);
+       rs = &ic->ic_sup_rates[mode];
+
+       /* add supported rates IE */
+       *frm++ = IEEE80211_ELEMID_RATES;
+       nrates = rs->rs_nrates;
+       if (nrates > IEEE80211_RATE_SIZE)
+               nrates = IEEE80211_RATE_SIZE;
+       *frm++ = nrates;
+       memcpy(frm, rs->rs_rates, nrates);
+       frm += nrates;
+
+       /* add supported xrates IE */
+       if (rs->rs_nrates > IEEE80211_RATE_SIZE) {
+               nrates = rs->rs_nrates - IEEE80211_RATE_SIZE;
+               *frm++ = IEEE80211_ELEMID_XRATES;
+               *frm++ = nrates;
+               memcpy(frm, rs->rs_rates + IEEE80211_RATE_SIZE, nrates);
+               frm += nrates;
+       }
+
+       /* setup length of probe request */
+       hdr->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 = ieee80211_chan2ieee(ic, c);
+       chan->flags = 0;
+       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;
+       }
+
+       DPRINTFN(WPI_DEBUG_SCANNING,
+           ("Scanning %u Passive: %d\n",
+            chan->chan,
+            c->ic_flags & IEEE80211_CHAN_PASSIVE));
+
+       hdr->nchan++;
+       chan++;
+
+       frm += sizeof (struct wpi_scan_chan);
+#if 0
+       // 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;
+
+               chan->chan = ieee80211_chan2ieee(ic, c);
+               chan->flags = 0;
+               if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) {
+                   chan->flags |= WPI_CHAN_ACTIVE;
+                   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;
+               }
+
+               DPRINTFN(WPI_DEBUG_SCANNING,
+                        ("Scanning %u Passive: %d\n",
+                         chan->chan,
+                         c->ic_flags & IEEE80211_CHAN_PASSIVE));
+
+               hdr->nchan++;
+               chan++;
+
+               frm += sizeof (struct wpi_scan_chan);
+       }
+#endif
+
+       hdr->len = htole16(frm - (uint8_t *)hdr);
+       pktlen = frm - (uint8_t *)cmd;
+
+       error = bus_dmamap_load(ring->data_dmat, data->map, cmd, pktlen,
+           wpi_dma_map_addr, &physaddr, BUS_DMA_NOWAIT);
+       if (error != 0) {
+               device_printf(sc->sc_dev, "could not map scan command\n");
+               m_freem(data->m);
+               data->m = NULL;
+               return error;
+       }
+
+       desc->flags = htole32(WPI_PAD32(pktlen) << 28 | 1 << 24);
+       desc->segs[0].addr = htole32(physaddr);
+       desc->segs[0].len  = htole32(pktlen);
+
+       bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
+           BUS_DMASYNC_PREWRITE);
+       bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE);
+
+       /* kick cmd ring */
+       ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT;
+       WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur);
+
+       sc->sc_scan_timer = 5;
+       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_config(struct wpi_softc *sc)
+{
+       struct ifnet *ifp = sc->sc_ifp;
+       struct ieee80211com *ic = ifp->if_l2com;
+       struct wpi_power power;
+       struct wpi_bluetooth bluetooth;
+       struct wpi_node_info node;
+       int error;
+
+       /* set power mode */
+       memset(&power, 0, sizeof power);
+       power.flags = htole32(WPI_POWER_CAM|0x8);
+       error = wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &power, sizeof power, 0);
+       if (error != 0) {
+               device_printf(sc->sc_dev, "could not set power mode\n");
+               return error;
+       }
+
+       /* configure bluetooth coexistence */
+       memset(&bluetooth, 0, sizeof bluetooth);
+       bluetooth.flags = 3;
+       bluetooth.lead = 0xaa;
+       bluetooth.kill = 1;
+       error = wpi_cmd(sc, WPI_CMD_BLUETOOTH, &bluetooth, sizeof bluetooth,
+           0);
+       if (error != 0) {
+               device_printf(sc->sc_dev,
+                   "could not configure bluetooth coexistence\n");
+               return error;
+       }
+
+       /* configure adapter */
+       memset(&sc->config, 0, sizeof (struct wpi_config));
+       IEEE80211_ADDR_COPY(sc->config.myaddr, IF_LLADDR(ifp));
+       /*set default channel*/
+       sc->config.chan = htole16(ieee80211_chan2ieee(ic, ic->ic_curchan));
+       sc->config.flags = htole32(WPI_CONFIG_TSF);
+       if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) {
+               sc->config.flags |= htole32(WPI_CONFIG_AUTO |
+                   WPI_CONFIG_24GHZ);
+       }
+       sc->config.filter = 0;
+       switch (ic->ic_opmode) {
+       case IEEE80211_M_STA:
+       case IEEE80211_M_WDS:   /* No know setup, use STA for now */
+               sc->config.mode = WPI_MODE_STA;
+               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;
+       }
+       sc->config.cck_mask  = 0x0f;    /* not yet negotiated */
+       sc->config.ofdm_mask = 0xff;    /* not yet negotiated */
+       error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config,
+               sizeof (struct wpi_config), 0);
+       if (error != 0) {
+               device_printf(sc->sc_dev, "configure command failed\n");
+               return error;
+       }
+
+       /* configuration has changed, set Tx power accordingly */
+       if ((error = wpi_set_txpower(sc, ic->ic_curchan, 0)) != 0) {
+           device_printf(sc->sc_dev, "could not set Tx power\n");
+           return error;
+       }
+
+       /* add broadcast node */
+       memset(&node, 0, sizeof node);
+       IEEE80211_ADDR_COPY(node.bssid, ifp->if_broadcastaddr);
+       node.id = WPI_ID_BROADCAST;
+       node.rate = wpi_plcp_signal(2);
+       error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 0);
+       if (error != 0) {
+               device_printf(sc->sc_dev, "could not add broadcast node\n");
+               return error;
+       }
+
+       /* Setup rate scalling */
+       error = wpi_mrr_setup(sc);
+       if (error != 0) {
+               device_printf(sc->sc_dev, "could not setup MRR\n");
+               return error;
+       }
+
+       return 0;
+}
+
+static void
+wpi_stop_master(struct wpi_softc *sc)
+{
+       uint32_t tmp;
+       int ntries;
+
+       DPRINTFN(WPI_DEBUG_HW,("Disabling Firmware execution\n"));
+
+       tmp = WPI_READ(sc, WPI_RESET);
+       WPI_WRITE(sc, WPI_RESET, tmp | WPI_STOP_MASTER | WPI_NEVO_RESET);
+
+       tmp = WPI_READ(sc, WPI_GPIO_CTL);
+       if ((tmp & WPI_GPIO_PWR_STATUS) == WPI_GPIO_PWR_SLEEP)
+               return; /* already asleep */
+
+       for (ntries = 0; ntries < 100; ntries++) {
+               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_power_up(struct wpi_softc *sc)
+{
+       uint32_t tmp;
+       int ntries;
+
+       wpi_mem_lock(sc);
+       tmp = wpi_mem_read(sc, WPI_MEM_POWER);
+       wpi_mem_write(sc, WPI_MEM_POWER, tmp & ~0x03000000);
+       wpi_mem_unlock(sc);
+
+       for (ntries = 0; ntries < 5000; ntries++) {
+               if (WPI_READ(sc, WPI_GPIO_STATUS) & WPI_POWERED)
+                       break;
+               DELAY(10);
+       }
+       if (ntries == 5000) {
+               device_printf(sc->sc_dev,
+                   "timeout waiting for NIC to power up\n");
+               return ETIMEDOUT;
+       }
+       return 0;
+}
+
+static int
+wpi_reset(struct wpi_softc *sc)
+{
+       uint32_t tmp;
+       int ntries;
+
+       DPRINTFN(WPI_DEBUG_HW,
+           ("Resetting the card - clearing any uploaded firmware\n"));
+
+       /* clear any pending interrupts */
+       WPI_WRITE(sc, WPI_INTR, 0xffffffff);
+
+       tmp = WPI_READ(sc, WPI_PLL_CTL);
+       WPI_WRITE(sc, WPI_PLL_CTL, tmp | WPI_PLL_INIT);
+
+       tmp = WPI_READ(sc, WPI_CHICKEN);
+       WPI_WRITE(sc, WPI_CHICKEN, tmp | WPI_CHICKEN_RXNOLOS);
+
+       tmp = WPI_READ(sc, WPI_GPIO_CTL);
+       WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_INIT);
+
+       /* wait for clock stabilization */
+       for (ntries = 0; ntries < 25000; ntries++) {
+               if (WPI_READ(sc, WPI_GPIO_CTL) & WPI_GPIO_CLOCK)
+                       break;
+               DELAY(10);
+       }
+       if (ntries == 25000) {
+               device_printf(sc->sc_dev,
+                   "timeout waiting for clock stabilization\n");
+               return ETIMEDOUT;
+       }
+
+       /* initialize EEPROM */
+       tmp = WPI_READ(sc, WPI_EEPROM_STATUS);
+
+       if ((tmp & WPI_EEPROM_VERSION) == 0) {
+               device_printf(sc->sc_dev, "EEPROM not found\n");
+               return EIO;
+       }
+       WPI_WRITE(sc, WPI_EEPROM_STATUS, tmp & ~WPI_EEPROM_LOCKED);
+
+       return 0;
+}
+
+static void
+wpi_hw_config(struct wpi_softc *sc)
+{
+       uint32_t rev, hw;
+
+       /* voodoo from the Linux "driver".. */
+       hw = WPI_READ(sc, WPI_HWCONFIG);
+
+       rev = pci_read_config(sc->sc_dev, PCIR_REVID, 1);
+       if ((rev & 0xc0) == 0x40)
+               hw |= WPI_HW_ALM_MB;
+       else if (!(rev & 0x80))
+               hw |= WPI_HW_ALM_MM;
+
+       if (sc->cap == 0x80)
+               hw |= WPI_HW_SKU_MRC;
+
+       hw &= ~WPI_HW_REV_D;
+       if ((le16toh(sc->rev) & 0xf0) == 0xd0)
+               hw |= WPI_HW_REV_D;
+
+       if (sc->type > 1)
+               hw |= WPI_HW_TYPE_B;
+
+       WPI_WRITE(sc, WPI_HWCONFIG, hw);
+}
+
+static void
+wpi_rfkill_resume(struct wpi_softc *sc)
+{
+       struct ifnet *ifp = sc->sc_ifp;
+       struct ieee80211com *ic = ifp->if_l2com;
+       struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
+       int ntries;
+
+       /* enable firmware again */
+       WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF);
+       WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD);
+
+       /* wait for thermal sensors to calibrate */
+       for (ntries = 0; ntries < 1000; ntries++) {
+               if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0)
+                       break;
+               DELAY(10);
+       }
+
+       if (ntries == 1000) {
+               device_printf(sc->sc_dev,
+                   "timeout waiting for thermal calibration\n");
+               WPI_UNLOCK(sc);
+               return;
+       }
+       DPRINTFN(WPI_DEBUG_TEMP,("temperature %d\n", sc->temp));
+
+       if (wpi_config(sc) != 0) {
+               device_printf(sc->sc_dev, "device config failed\n");
+               WPI_UNLOCK(sc);
+               return;
+       }
+
+       ifp->if_flags &= ~IFF_OACTIVE;
+       ifp->if_flags |= IFF_RUNNING;
+       sc->flags &= ~WPI_FLAG_HW_RADIO_OFF;
+
+       if (vap != NULL) {
+               if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) {
+                       if (vap->iv_opmode != IEEE80211_M_MONITOR) {
+                               ieee80211_beacon_miss(ic);
+                               wpi_set_led(sc, WPI_LED_LINK, 0, 1);
+                       } else
+                               wpi_set_led(sc, WPI_LED_LINK, 5, 5);
+               } else {
+                       ieee80211_scan_next(vap);
+                       wpi_set_led(sc, WPI_LED_LINK, 20, 2);
+               }
+       }
+
+       callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc);
+}
+
+static void
+wpi_init_locked(struct wpi_softc *sc, int force)
+{
+       struct ifnet *ifp = sc->sc_ifp;
+       uint32_t tmp;
+       int ntries, qid;
+
+       wpi_stop_locked(sc);
+       (void)wpi_reset(sc);
+
+       wpi_mem_lock(sc);
+       wpi_mem_write(sc, WPI_MEM_CLOCK1, 0xa00);
+       DELAY(20);
+       tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV);
+       wpi_mem_write(sc, WPI_MEM_PCIDEV, tmp | 0x800);
+       wpi_mem_unlock(sc);
+
+       (void)wpi_power_up(sc);
+       wpi_hw_config(sc);
+
+       /* init Rx ring */
+       wpi_mem_lock(sc);
+       WPI_WRITE(sc, WPI_RX_BASE, sc->rxq.desc_dma.paddr);
+       WPI_WRITE(sc, WPI_RX_RIDX_PTR, sc->shared_dma.paddr +
+           offsetof(struct wpi_shared, next));
+       WPI_WRITE(sc, WPI_RX_WIDX, (WPI_RX_RING_COUNT - 1) & ~7);
+       WPI_WRITE(sc, WPI_RX_CONFIG, 0xa9601010);
+       wpi_mem_unlock(sc);
+
+       /* init Tx rings */
+       wpi_mem_lock(sc);
+       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);
+
+       WPI_WRITE(sc, WPI_TX_BASE_PTR, sc->shared_dma.paddr);
+       WPI_WRITE(sc, WPI_MSG_CONFIG, 0xffff05a5);
+
+       for (qid = 0; qid < 6; qid++) {
+               WPI_WRITE(sc, WPI_TX_CTL(qid), 0);
+               WPI_WRITE(sc, WPI_TX_BASE(qid), 0);
+               WPI_WRITE(sc, WPI_TX_CONFIG(qid), 0x80200008);
+       }
+       wpi_mem_unlock(sc);
+
+       /* clear "radio off" and "disable command" bits (reversed logic) */
+       WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF);
+       WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD);
+       sc->flags &= ~WPI_FLAG_HW_RADIO_OFF;
+
+       /* clear any pending interrupts */
+       WPI_WRITE(sc, WPI_INTR, 0xffffffff);
+
+       /* enable interrupts */
+       WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK);
+
+       WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF);
+       WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF);
+
+       if ((wpi_load_firmware(sc)) != 0) {
+           device_printf(sc->sc_dev,
+               "A problem occurred loading the firmware to the driver\n");
+           return;
+       }
+
+       /* At this point the firmware is up and running. If the hardware
+        * 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 (!(tmp & 0x1)) {
+               sc->flags |= WPI_FLAG_HW_RADIO_OFF;
+               device_printf(sc->sc_dev,"Radio Transmitter is switched off\n");
+               goto out;
+       }
+
+       /* wait for thermal sensors to calibrate */
+       for (ntries = 0; ntries < 1000; ntries++) {
+               if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0)
+                       break;
+               DELAY(10);
+       }
+
+       if (ntries == 1000) {
+               device_printf(sc->sc_dev,
+                   "timeout waiting for thermal sensors calibration\n");
+               return;
+       }
+       DPRINTFN(WPI_DEBUG_TEMP,("temperature %d\n", sc->temp));
+
+       if (wpi_config(sc) != 0) {
+               device_printf(sc->sc_dev, "device config failed\n");
+               return;
+       }
+
+       ifp->if_flags &= ~IFF_OACTIVE;
+       ifp->if_flags |= IFF_RUNNING;
+out:
+       callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc);
+}
+
+static void
+wpi_init(void *arg)
+{
+       struct wpi_softc *sc = arg;
+       struct ifnet *ifp = sc->sc_ifp;
+       struct ieee80211com *ic = ifp->if_l2com;
+
+       WPI_LOCK(sc);
+       wpi_init_locked(sc, 0);
+       WPI_UNLOCK(sc);
+
+       if (ifp->if_flags & IFF_RUNNING)
+               ieee80211_start_all(ic);                /* start all vaps */
+}
+
+static void
+wpi_stop_locked(struct wpi_softc *sc)
+{
+       struct ifnet *ifp = sc->sc_ifp;
+       uint32_t tmp;
+       int ac;
+
+       sc->sc_tx_timer = 0;
+       sc->sc_scan_timer = 0;
+       ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
+       sc->flags &= ~WPI_FLAG_HW_RADIO_OFF;
+       callout_stop(&sc->watchdog_to);
+       callout_stop(&sc->calib_to);
+
+
+       /* disable interrupts */
+       WPI_WRITE(sc, WPI_MASK, 0);
+       WPI_WRITE(sc, WPI_INTR, WPI_INTR_MASK);
+       WPI_WRITE(sc, WPI_INTR_STATUS, 0xff);
+       WPI_WRITE(sc, WPI_INTR_STATUS, 0x00070000);
+
+       wpi_mem_lock(sc);
+       wpi_mem_write(sc, WPI_MEM_MODE, 0);
+       wpi_mem_unlock(sc);
+
+       /* reset all Tx rings */
+       for (ac = 0; ac < 4; ac++)
+               wpi_reset_tx_ring(sc, &sc->txq[ac]);
+       wpi_reset_tx_ring(sc, &sc->cmdq);
+
+       /* reset Rx ring */
+       wpi_reset_rx_ring(sc, &sc->rxq);
+
+       wpi_mem_lock(sc);
+       wpi_mem_write(sc, WPI_MEM_CLOCK2, 0x200);
+       wpi_mem_unlock(sc);
+
+       DELAY(5);
+
+       wpi_stop_master(sc);
+
+       tmp = WPI_READ(sc, WPI_RESET);
+       WPI_WRITE(sc, WPI_RESET, tmp | WPI_SW_RESET);
+       sc->flags &= ~WPI_FLAG_BUSY;
+}
+
+static void
+wpi_stop(struct wpi_softc *sc)
+{
+       WPI_LOCK(sc);
+       wpi_stop_locked(sc);
+       WPI_UNLOCK(sc);
+}
+
+static void
+wpi_newassoc(struct ieee80211_node *ni, int isnew)
+{
+       /* XXX move */
+       ieee80211_ratectl_node_init(ni);
+}
+
+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);
+       int temp;
+
+       if (vap->iv_state != IEEE80211_S_RUN)
+               return;
+
+       /* update sensor data */
+       temp = (int)WPI_READ(sc, WPI_TEMPERATURE);
+       DPRINTFN(WPI_DEBUG_TEMP,("Temp in calibration is: %d\n", temp));
+
+       wpi_power_calibration(sc, temp);
+
+       callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc);
+}
+
+/*
+ * 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)
+{
+       struct ifnet *ifp = sc->sc_ifp;
+       struct ieee80211com *ic = ifp->if_l2com;
+       struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
+
+       /* sanity-check read value */
+       if (temp < -260 || temp > 25) {
+               /* this can't be correct, ignore */
+               DPRINTFN(WPI_DEBUG_TEMP,
+                   ("out-of-range temperature reported: %d\n", temp));
+               return;
+       }
+
+       DPRINTFN(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, vap->iv_bss->ni_chan, 1) != 0) {
+               /* just warn, too bad for the automatic calibration... */
+               device_printf(sc->sc_dev,"could not adjust Tx power\n");
+       }
+}
+
+/**
+ * Read the eeprom to find out what channels are valid for the given
+ * band and update net80211 with what we find.
+ */
+static void
+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];
+       struct wpi_eeprom_chan channels[WPI_MAX_CHAN_PER_BAND];
+       struct ieee80211_channel *c;
+       int chan, i, passive;
+
+       wpi_read_prom_data(sc, band->addr, channels,
+           band->nchan * sizeof (struct wpi_eeprom_chan));
+
+       for (i = 0; i < band->nchan; i++) {
+               if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) {
+                       DPRINTFN(WPI_DEBUG_HW,
+                           ("Channel Not Valid: %d, band %d\n",
+                            band->chan[i],n));
+                       continue;
+               }
+
+               passive = 0;
+               chan = band->chan[i];
+               c = &ic->ic_channels[ic->ic_nchans++];
+
+               /* is active scan allowed on this channel? */
+               if (!(channels[i].flags & WPI_EEPROM_CHAN_ACTIVE)) {
+                       passive = IEEE80211_CHAN_PASSIVE;
+               }
+
+               if (n == 0) {   /* 2GHz band */
+                       c->ic_ieee = chan;
+                       c->ic_freq = ieee80211_ieee2mhz(chan,
+                           IEEE80211_CHAN_2GHZ);
+                       c->ic_flags = IEEE80211_CHAN_B | passive;
+
+                       c = &ic->ic_channels[ic->ic_nchans++];
+                       c->ic_ieee = chan;
+                       c->ic_freq = ieee80211_ieee2mhz(chan,
+                           IEEE80211_CHAN_2GHZ);
+                       c->ic_flags = IEEE80211_CHAN_G | passive;
+
+               } else {        /* 5GHz band */
+                       /*
+                        * Some 3945ABG adapters support channels 7, 8, 11
+                        * and 12 in the 2GHz *and* 5GHz bands.
+                        * Because of limitations in our net80211(9) stack,
+                        * we can't support these channels in 5GHz band.
+                        * XXX not true; just need to map to proper frequency
+                        */
+                       if (chan <= 14)
+                               continue;
+
+                       c->ic_ieee = chan;
+                       c->ic_freq = ieee80211_ieee2mhz(chan,
+                           IEEE80211_CHAN_5GHZ);
+                       c->ic_flags = IEEE80211_CHAN_A | passive;
+               }
+
+               /* save maximum allowed power for this channel */
+               sc->maxpwr[chan] = channels[i].maxpwr;
+
+#if 0
+               // XXX We can probably use this an get rid of maxpwr - ben 20070617
+               ic->ic_channels[chan].ic_maxpower = channels[i].maxpwr;
+               //ic->ic_channels[chan].ic_minpower...
+               //ic->ic_channels[chan].ic_maxregtxpower...
+#endif
+
+               DPRINTF(("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));
+       }
+}
+
+static void
+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;
+
+       wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32, &rgroup,
+           sizeof rgroup);
+
+       /* save power group information */
+       group->chan   = rgroup.chan;
+       group->maxpwr = rgroup.maxpwr;
+       /* temperature at which the samples were taken */
+       group->temp   = (int16_t)le16toh(rgroup.temp);
+
+       DPRINTF(("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(("\tsample %d: index=%d power=%d\n", i,
+                           group->samples[i].index, group->samples[i].power));
+       }
+}
+
+/*
+ * Update Tx power to match what is defined for channel `c'.
+ */
+static int
+wpi_set_txpower(struct wpi_softc *sc, struct ieee80211_channel *c, int async)
+{
+       struct ifnet *ifp = sc->sc_ifp;
+       struct ieee80211com *ic = ifp->if_l2com;
+       struct wpi_power_group *group;
+       struct wpi_cmd_txpower txpower;
+       u_int chan;
+       int i;
+
+       /* get channel number */
+       chan = ieee80211_chan2ieee(ic, c);
+
+       /* find the power group to which this channel belongs */
+       if (IEEE80211_IS_CHAN_5GHZ(c)) {
+               for (group = &sc->groups[1]; group < &sc->groups[4]; group++)
+                       if (chan <= group->chan)
+                               break;
+       } else
+               group = &sc->groups[0];
+
+       memset(&txpower, 0, sizeof txpower);
+       txpower.band = IEEE80211_IS_CHAN_5GHZ(c) ? 0 : 1;
+       txpower.channel = htole16(chan);
+
+       /* set Tx power for all OFDM and CCK rates */
+       for (i = 0; i <= 11 ; i++) {
+               /* retrieve Tx power for this channel/rate combination */
+               int idx = wpi_get_power_index(sc, group, c,
+                   wpi_ridx_to_rate[i]);
+
+               txpower.rates[i].rate = wpi_ridx_to_plcp[i];
+
+               if (IEEE80211_IS_CHAN_5GHZ(c)) {
+                       txpower.rates[i].gain_radio = wpi_rf_gain_5ghz[idx];
+                       txpower.rates[i].gain_dsp = wpi_dsp_gain_5ghz[idx];
+               } else {
+                       txpower.rates[i].gain_radio = wpi_rf_gain_2ghz[idx];
+                       txpower.rates[i].gain_dsp = wpi_dsp_gain_2ghz[idx];
+               }
+               DPRINTFN(WPI_DEBUG_TEMP,("chan %d/rate %d: power index %d\n",
+                           chan, wpi_ridx_to_rate[i], idx));
+       }
+
+       return wpi_cmd(sc, WPI_CMD_TXPOWER, &txpower, sizeof txpower, async);
+}
+
+/*
+ * 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 rate)
+{
+/* 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 power is group's maximum power - 3dB */
+       pwr = group->maxpwr / 2;
+
+       /* decrease power for highest OFDM rates to reduce distortion */
+       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;
+       }
+
+       /* never exceed channel's maximum allowed Tx power */
+       pwr = min(pwr, sc->maxpwr[chan]);
+
+       /* retrieve 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 colder than factory-calibrated: decreate output power
+        *      - if warmer than factory-calibrated: increase output power
+        */
+       idx -= (sc->temp - group->temp) * 11 / 100;
+
+       /* decrease power for CCK rates (-5dB) */
+       if (!WPI_RATE_IS_OFDM(rate))
+               idx += 10;
+
+       /* keep power index 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
+}
+
+/**
+ * Called by net80211 framework to indicate that a scan
+ * is starting. This function doesn't actually do the scan,
+ * wpi_scan_curchan starts things off. This function is more
+ * of an early warning from the framework we should get ready
+ * for the scan.
+ */
+static void
+wpi_scan_start(struct ieee80211com *ic)
+{
+       struct ifnet *ifp = ic->ic_ifp;
+       struct wpi_softc *sc = ifp->if_softc;
+
+       WPI_LOCK(sc);
+       wpi_set_led(sc, WPI_LED_LINK, 20, 2);
+       WPI_UNLOCK(sc);
+}
+
+/**
+ * Called by the net80211 framework, indicates that the
+ * 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)
+{
+       /* XXX ignore */
+}
+
+/**
+ * Called by the net80211 framework to indicate to the driver
+ * that the channel should be changed
+ */
+static void
+wpi_set_channel(struct ieee80211com *ic)
+{
+       struct ifnet *ifp = ic->ic_ifp;
+       struct wpi_softc *sc = ifp->if_softc;
+       int error;
+
+       /*
+        * Only need to set the channel in Monitor mode. AP scanning and auth
+        * are already taken care of by their respective firmware commands.
+        */
+       if (ic->ic_opmode == IEEE80211_M_MONITOR) {
+               error = wpi_config(sc);
+               if (error != 0)
+                       device_printf(sc->sc_dev,
+                           "error %d settting channel\n", error);
+       }
+}
+
+/**
+ * Called by net80211 to indicate that we need to scan the current
+ * channel. The channel is previously be set via the wpi_set_channel
+ * callback.
+ */
+static void
+wpi_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell)
+{
+       struct ieee80211vap *vap = ss->ss_vap;
+       struct ifnet *ifp = vap->iv_ic->ic_ifp;
+       struct wpi_softc *sc = ifp->if_softc;
+
+       WPI_LOCK(sc);
+       if (wpi_scan(sc))
+               ieee80211_cancel_scan(vap);
+       WPI_UNLOCK(sc);
+}
+
+/**
+ * Called by the net80211 framework to indicate
+ * the minimum dwell time has been met, terminate the scan.
+ * We don't actually terminate the scan as the firmware will notify
+ * us when it's finished and we have no way to interrupt it.
+ */
+static void
+wpi_scan_mindwell(struct ieee80211_scan_state *ss)
+{
+       /* NB: don't try to abort scan; wait for firmware to finish */
+}
+
+static void
+wpi_hwreset(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;
+       uint32_t tmp;
+
+       DPRINTFN(WPI_DEBUG_WATCHDOG,("Watchdog: tick\n"));
+
+       if (sc->flags & WPI_FLAG_HW_RADIO_OFF) {
+               /* No need to lock firmware memory */
+               tmp = wpi_mem_read(sc, WPI_MEM_HW_RADIO_OFF);
+
+               if ((tmp & 0x1) == 0) {
+                       /* Radio kill switch is still off */
+                       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");
+                       ifp->if_oerrors++;
+                       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_flags & IFF_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);
+MODULE_DEPEND(wpi, wlan_amrr, 1, 1, 1);
+/*
+MODULE_DEPEND(wpi, wpifw_fw_fw, 1, 1, 1);
+MODULE_DEPEND(wpi, ath_rate, 1, 1, 1);
+*/
diff --git a/sys/dev/netif/wpi/if_wpireg.h b/sys/dev/netif/wpi/if_wpireg.h
new file mode 100644 (file)
index 0000000..eebe222
--- /dev/null
@@ -0,0 +1,737 @@
+/*     $FreeBSD: src/sys/dev/wpi/if_wpireg.h,v 1.4.2.1 2009/08/03 08:13:06 kensmith Exp $      */
+
+/*-
+ * Copyright (c) 2006,2007
+ *     Damien Bergamini <damien.bergamini@free.fr>
+ *
+ * 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.
+ */
+
+#define WPI_TX_RING_COUNT      256
+#define WPI_CMD_RING_COUNT     256
+#define WPI_RX_RING_COUNT      64
+
+/*
+ * Rings must be aligned on a 16K boundary.
+ */
+#define WPI_RING_DMA_ALIGN     0x4000
+
+/* maximum scatter/gather */
+#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_HWCONFIG           0x000
+#define WPI_INTR               0x008
+#define WPI_MASK               0x00c
+#define WPI_INTR_STATUS                0x010
+#define WPI_GPIO_STATUS                0x018
+#define WPI_RESET              0x020
+#define WPI_GPIO_CTL           0x024
+#define WPI_EEPROM_CTL         0x02c
+#define WPI_EEPROM_STATUS      0x030
+#define WPI_UCODE_SET          0x058
+#define WPI_UCODE_CLR          0x05c
+#define WPI_TEMPERATURE                0x060
+#define WPI_CHICKEN            0x100
+#define WPI_PLL_CTL            0x20c
+#define WPI_WRITE_MEM_ADDR     0x444
+#define WPI_READ_MEM_ADDR      0x448
+#define WPI_WRITE_MEM_DATA     0x44c
+#define WPI_READ_MEM_DATA      0x450
+#define WPI_TX_WIDX            0x460
+#define WPI_TX_CTL(qid)                (0x940 + (qid) * 8)
+#define WPI_TX_BASE(qid)       (0x944 + (qid) * 8)
+#define WPI_TX_DESC(qid)       (0x980 + (qid) * 80)
+#define WPI_RX_CONFIG          0xc00
+#define WPI_RX_BASE            0xc04
+#define WPI_RX_WIDX            0xc20
+#define WPI_RX_RIDX_PTR                0xc24
+#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
+
+
+/*
+ * NIC internal memory offsets.
+ */
+#define WPI_MEM_MODE           0x2e00
+#define WPI_MEM_RA             0x2e04
+#define WPI_MEM_TXCFG          0x2e10
+#define WPI_MEM_MAGIC4         0x2e14
+#define WPI_MEM_MAGIC5         0x2e20
+#define WPI_MEM_BYPASS1                0x2e2c
+#define WPI_MEM_BYPASS2                0x2e30
+#define WPI_MEM_CLOCK1         0x3004
+#define WPI_MEM_CLOCK2         0x3008
+#define WPI_MEM_POWER          0x300c
+#define WPI_MEM_PCIDEV         0x3010
+#define WPI_MEM_HW_RADIO_OFF   0x3014
+#define WPI_MEM_UCODE_CTL      0x3400
+#define WPI_MEM_UCODE_SRC      0x3404
+#define WPI_MEM_UCODE_DST      0x3408
+#define WPI_MEM_UCODE_SIZE     0x340c
+#define WPI_MEM_UCODE_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_HWCONFIG */
+#define WPI_HW_ALM_MB  (1 << 8)
+#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 flags for registers WPI_READ_MEM_ADDR/WPI_WRITE_MEM_ADDR */
+#define WPI_MEM_4      ((sizeof (uint32_t) - 1) << 24)
+
+/* possible values for WPI_MEM_UCODE_DST */
+#define WPI_FW_TEXT    0x00000000
+
+/* possible flags for WPI_GPIO_STATUS */
+#define WPI_POWERED            (1 << 9)
+
+/* possible flags for register WPI_RESET */
+#define WPI_NEVO_RESET         (1 << 0)
+#define WPI_SW_RESET           (1 << 7)
+#define WPI_MASTER_DISABLED    (1 << 8)
+#define WPI_STOP_MASTER                (1 << 9)
+
+/* possible flags for register WPI_GPIO_CTL */
+#define WPI_GPIO_CLOCK         (1 << 0)
+#define WPI_GPIO_INIT          (1 << 2)
+#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_CHICKEN */
+#define WPI_CHICKEN_RXNOLOS    (1 << 23)
+
+/* possible flags for register WPI_PLL_CTL */
+#define WPI_PLL_INIT           (1 << 24)
+
+/* possible flags for register WPI_UCODE_CLR */
+#define WPI_RADIO_OFF          (1 << 1)
+#define WPI_DISABLE_CMD                (1 << 2)
+
+/* possible flags for WPI_RX_STATUS */
+#define        WPI_RX_IDLE     (1 << 24)
+
+/* possible flags for register WPI_UC_CTL */
+#define WPI_UC_ENABLE  (1 << 30)
+#define WPI_UC_RUN     (1 << 31)
+
+/* possible flags for register WPI_INTR_CSR */
+#define WPI_ALIVE_INTR (1 << 0)
+#define WPI_WAKEUP_INTR        (1 << 1)
+#define WPI_SW_ERROR   (1 << 25)
+#define WPI_TX_INTR    (1 << 27)
+#define WPI_HW_ERROR   (1 << 29)
+#define WPI_RX_INTR    (1 << 31)
+
+#define WPI_INTR_MASK                                                  \
+       (WPI_SW_ERROR | WPI_HW_ERROR | WPI_TX_INTR | WPI_RX_INTR |      \
+        WPI_ALIVE_INTR | WPI_WAKEUP_INTR)
+
+/* possible flags for register WPI_TX_STATUS */
+#define WPI_TX_IDLE(qid)       (1 << ((qid) + 24) | 1 << ((qid) + 16))
+
+/* possible flags for register WPI_EEPROM_CTL */
+#define WPI_EEPROM_READY       (1 << 0)
+
+/* possible flags for register WPI_EEPROM_STATUS */
+#define WPI_EEPROM_VERSION     0x00000007
+#define WPI_EEPROM_LOCKED      0x00000180
+
+
+struct wpi_shared {
+       uint32_t        txbase[8];
+       uint32_t        next;
+       uint32_t        reserved[2];
+} __packed;
+
+#define WPI_MAX_SEG_LEN        65520
+struct wpi_tx_desc {
+       uint32_t        flags;
+#define WPI_PAD32(x)   (roundup2(x, 4) - (x))
+
+       struct {
+               uint32_t        addr;
+               uint32_t        len;
+       } __attribute__((__packed__))   segs[WPI_MAX_SCATTER];
+       uint8_t         reserved[28];
+} __packed;
+
+struct wpi_tx_stat {
+       uint8_t         nrts;
+       uint8_t         ntries;
+       uint8_t         nkill;
+       uint8_t         rate;
+       uint32_t        duration;
+       uint32_t        status;
+} __packed;
+
+struct wpi_rx_desc {
+       uint32_t        len;
+       uint8_t         type;
+#define WPI_UC_READY             1
+#define WPI_RX_DONE             27
+#define WPI_TX_DONE             28
+#define WPI_START_SCAN         130
+#define WPI_SCAN_RESULTS       131
+#define WPI_STOP_SCAN          132
+#define WPI_STATE_CHANGED      161
+#define WPI_MISSED_BEACON      162
+
+       uint8_t         flags;
+       uint8_t         idx;
+       uint8_t         qid;
+} __packed;
+
+struct wpi_rx_stat {
+       uint8_t         len;
+#define WPI_STAT_MAXLEN        20
+
+       uint8_t         id;
+       uint8_t         rssi;   /* received signal strength */
+#define WPI_RSSI_OFFSET        95
+
+       uint8_t         agc;    /* access gain control */
+       uint16_t        signal;
+       uint16_t        noise;
+} __packed;
+
+struct wpi_rx_head {
+       uint16_t        chan;
+       uint16_t        flags;
+       uint8_t         reserved;
+       uint8_t         rate;
+       uint16_t        len;
+} __packed;
+
+struct wpi_rx_tail {
+       uint32_t        flags;
+#define WPI_RX_NO_CRC_ERR      (1 << 0)
+#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)
+       uint64_t        tstamp;
+       uint32_t        tbeacon;
+} __packed;
+
+struct wpi_tx_cmd {
+       uint8_t code;
+#define WPI_CMD_CONFIGURE       16
+#define WPI_CMD_ASSOCIATE       17
+#define WPI_CMD_SET_WME          19
+#define WPI_CMD_TSF             20
+#define WPI_CMD_ADD_NODE        24
+#define WPI_CMD_TX_DATA                 28
+#define WPI_CMD_MRR_SETUP       71
+#define WPI_CMD_SET_LED                 72
+#define WPI_CMD_SET_POWER_MODE 119
+#define WPI_CMD_SCAN           128
+#define WPI_CMD_SET_BEACON     145
+#define WPI_CMD_TXPOWER                151
+#define WPI_CMD_BLUETOOTH      155
+
+       uint8_t flags;
+       uint8_t idx;
+       uint8_t qid;
+       uint8_t data[360];
+} __packed;
+
+/* structure for WPI_CMD_CONFIGURE */
+struct wpi_config {
+       uint8_t         myaddr[IEEE80211_ADDR_LEN];
+       uint16_t        reserved1;
+       uint8_t         bssid[IEEE80211_ADDR_LEN];
+       uint16_t        reserved2;
+       uint8_t         wlap_bssid_addr[6];
+       uint16_t        reserved3;
+       uint8_t         mode;
+#define WPI_MODE_HOSTAP                1
+#define WPI_MODE_STA           3
+#define WPI_MODE_IBSS          4
+#define WPI_MODE_MONITOR       6
+
+       uint8_t         air_propogation;
+       uint16_t        reserved4;
+       uint8_t         ofdm_mask;
+       uint8_t         cck_mask;
+       uint16_t        associd;
+       uint32_t        flags;
+#define WPI_CONFIG_24GHZ       (1 << 0)
+#define WPI_CONFIG_CCK         (1 << 1)
+#define WPI_CONFIG_AUTO                (1 << 2)
+#define WPI_CONFIG_SHSLOT      (1 << 4)
+#define WPI_CONFIG_SHPREAMBLE  (1 << 5)
+#define WPI_CONFIG_NODIVERSITY (1 << 7)
+#define WPI_CONFIG_ANTENNA_A   (1 << 8)
+#define WPI_CONFIG_ANTENNA_B   (1 << 9)
+#define WPI_CONFIG_TSF         (1 << 15)
+
+       uint32_t        filter;
+#define WPI_FILTER_PROMISC     (1 << 0)
+#define WPI_FILTER_CTL         (1 << 1)
+#define WPI_FILTER_MULTICAST   (1 << 2)
+#define WPI_FILTER_NODECRYPT   (1 << 3)
+#define WPI_FILTER_BSS         (1 << 5)
+#define WPI_FILTER_BEACON      (1 << 6)
+
+       uint8_t         chan;
+       uint16_t        reserved6;
+} __packed;
+
+/* structure for command WPI_CMD_ASSOCIATE */
+struct wpi_assoc {
+       uint32_t        flags;
+       uint32_t        filter;
+       uint8_t         ofdm_mask;
+       uint8_t         cck_mask;
+       uint16_t        reserved;
+} __packed;
+
+/* structure for command WPI_CMD_SET_WME */
+struct wpi_wme_setup {
+       uint32_t        flags;
+       struct {
+               uint16_t        cwmin;
+               uint16_t        cwmax;
+               uint8_t         aifsn;
+               uint8_t         reserved;
+               uint16_t        txop;
+       } __packed      ac[WME_NUM_AC];
+} __packed;
+
+/* structure for command WPI_CMD_TSF */
+struct wpi_cmd_tsf {
+       uint64_t        tstamp;
+       uint16_t        bintval;
+       uint16_t        atim;
+       uint32_t        binitval;
+       uint16_t        lintval;
+       uint16_t        reserved;
+} __packed;
+
+/* structure for WPI_CMD_ADD_NODE */
+struct wpi_node_info {
+       uint8_t         control;
+#define WPI_NODE_UPDATE        (1 << 0)
+
+       uint8_t         reserved1[3];
+       uint8_t         bssid[IEEE80211_ADDR_LEN];
+       uint16_t        reserved2;
+       uint8_t         id;
+#define WPI_ID_BSS             0
+#define WPI_ID_BROADCAST       24
+
+       uint8_t         flags;
+       uint16_t        reserved3;
+       uint16_t        key_flags;
+       uint8_t         tkip;
+       uint8_t         reserved4;
+       uint16_t        ttak[5];
+       uint16_t        reserved5;
+       uint8_t         key[IEEE80211_KEYBUF_SIZE];
+       uint32_t        action;
+#define WPI_ACTION_SET_RATE    4
+       uint32_t        mask;
+       uint16_t        tid;
+       uint8_t         rate;
+       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_TX_DATA */
+struct wpi_cmd_data {
+       uint16_t        len;
+       uint16_t        lnext;
+       uint32_t        flags;
+#define WPI_TX_NEED_RTS                (1 <<  1)
+#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         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;
+#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         rate;
+       uint8_t         id;
+       uint8_t         reserved2[30];
+       uint32_t        lifetime;
+       uint8_t         ofdm_mask;
+       uint8_t         cck_mask;
+       uint16_t        reserved3[3];
+       uint16_t        tim;
+       uint8_t         timsz;
+       uint8_t         reserved4;
+       struct          ieee80211_frame wh;
+} __packed;
+
+/* structure for notification WPI_MISSED_BEACON */
+struct wpi_missed_beacon {
+    uint32_t consecutive;
+    uint32_t total;
+    uint32_t expected;
+    uint32_t received;
+} __packed;
+
+
+/* structure for WPI_CMD_MRR_SETUP */
+struct wpi_mrr_setup {
+       uint8_t which;
+#define WPI_MRR_CTL    0
+#define WPI_MRR_DATA   1
+
+       uint8_t         reserved[3];
+
+       struct {
+               uint8_t signal;
+               uint8_t flags;
+               uint8_t ntries;
+               uint8_t next;
+#define WPI_OFDM6      0
+#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 WPI_CMD_SET_LED */
+struct wpi_cmd_led {
+       uint32_t        unit;   /* multiplier (in usecs) */
+       uint8_t         which;
+#define WPI_LED_ACTIVITY       1
+#define WPI_LED_LINK           2
+
+       uint8_t         off;
+       uint8_t         on;
+       uint8_t         reserved;
+} __packed;
+
+/* structure for WPI_CMD_SET_POWER_MODE */
+struct wpi_power {
+       uint32_t        flags;
+#define WPI_POWER_CAM  0       /* constantly awake mode */
+       uint32_t        rx_timeout;
+       uint32_t        tx_timeout;
+       uint32_t        sleep[5];
+} __packed;
+
+/* structure for command WPI_CMD_SCAN */
+struct wpi_scan_hdr {
+       uint16_t        len;
+       uint8_t         reserved1;
+       uint8_t         nchan;
+       uint16_t        quiet;
+       uint16_t        threshold;
+       uint16_t        promotion;
+       uint16_t        reserved2;
+       uint32_t        maxtimeout;
+       uint32_t        suspend;
+       uint32_t        flags;
+       uint32_t        filter;
+
+struct {
+       uint16_t        len;
+       uint16_t        lnext;
+       uint32_t        flags;
+       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[32];
+       }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;
+       uint8_t         chan;
+#define WPI_CHAN_ACTIVE        (1 << 0)
+#define WPI_CHAN_DIRECT (1 << 1)
+       uint8_t         gain_radio;
+       uint8_t         gain_dsp;
+       uint16_t        active;         /* msecs */
+       uint16_t        passive;        /* msecs */
+} __packed;
+
+/* structure for WPI_CMD_BLUETOOTH */
+struct wpi_bluetooth {
+       uint8_t         flags;
+       uint8_t         lead;
+       uint8_t         kill;
+       uint8_t         reserved;
+       uint32_t        ack;
+       uint32_t        cts;
+} __packed;
+
+/* structure for command WPI_CMD_TXPOWER */
+struct wpi_cmd_txpower {
+
+       uint8_t         band;
+#define WPI_RATE_5GHZ  0
+#define WPI_RATE_2GHZ  1
+       uint8_t         reserved;
+       uint16_t        channel;
+
+#define WPI_RATE_MAPPING_COUNT 12
+       struct {
+           uint8_t     rate;
+           uint8_t     gain_radio;
+           uint8_t     gain_dsp;
+           uint8_t     reserved;
+       } __packed rates [WPI_RATE_MAPPING_COUNT];
+
+} __packed;
+
+
+
+#define WPI_FW_MAIN_TEXT_MAXSZ (80 * 1024 )
+#define WPI_FW_MAIN_DATA_MAXSZ (32 * 1024 )
+#define WPI_FW_INIT_TEXT_MAXSZ (80 * 1024 )
+#define WPI_FW_INIT_DATA_MAXSZ (32 * 1024 )
+#define WPI_FW_BOOT_TEXT_MAXSZ 1024
+
+#define WPI_FW_UPDATED (1 << 31 )
+
+/* firmware image header */
+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 {
+       uint32_t        version;
+       uint8_t         revision[8];
+       uint8_t         type;
+       uint8_t         subtype;
+       uint16_t        reserved;
+       uint32_t        logptr;
+       uint32_t        errorptr;
+       uint32_t        timestamp;
+       uint32_t        valid;
+} __packed;
+
+/* structure for WPI_START_SCAN notification */
+struct wpi_start_scan {
+       uint64_t        tstamp;
+       uint32_t        tbeacon;
+       uint8_t         chan;
+       uint8_t         band;
+       uint16_t        reserved;
+       uint32_t        status;
+} __packed;
+
+/* structure for WPI_STOP_SCAN notification */
+struct wpi_stop_scan {
+       uint8_t         nchan;
+       uint8_t         status;
+       uint8_t         reserved;
+       uint8_t         chan;
+       uint64_t        tsf;
+} __packed;
+
+#define WPI_EEPROM_MAC         0x015
+#define WPI_EEPROM_REVISION    0x035
+#define WPI_EEPROM_CAPABILITIES        0x045
+#define WPI_EEPROM_TYPE                0x04a
+#define WPI_EEPROM_DOMAIN      0x060
+#define WPI_EEPROM_BAND1       0x063
+#define WPI_EEPROM_BAND2       0x072
+#define WPI_EEPROM_BAND3       0x080
+#define WPI_EEPROM_BAND4       0x08d
+#define WPI_EEPROM_BAND5       0x099
+#define WPI_EEPROM_POWER_GRP   0x100
+
+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;
+};
+
+#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[5] = {
+    { WPI_EEPROM_BAND1, 14,
+       { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 }},
+    { 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 }}
+};
+
+#define WPI_MAX_PWR_INDEX      77
+
+/*
+ * RF Tx gain values from highest to lowest power (values obtained from
+ * 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
+};
+
+/*
+ * DSP pre-DAC gain values from highest to lowest power (values obtained
+ * 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
+};
+
+
+#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))
diff --git a/sys/dev/netif/wpi/if_wpivar.h b/sys/dev/netif/wpi/if_wpivar.h
new file mode 100644 (file)
index 0000000..b398bed
--- /dev/null
@@ -0,0 +1,213 @@
+/*     $FreeBSD: src/sys/dev/wpi/if_wpivar.h,v 1.6.2.1 2009/08/03 08:13:06 kensmith Exp $      */
+
+/*-
+ * Copyright (c) 2006,2007
+ *     Damien Bergamini <damien.bergamini@free.fr>
+ *
+ * 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.
+ */
+#include <netproto/802_11/ieee80211_amrr.h>
+
+struct wpi_rx_radiotap_header {
+       struct ieee80211_radiotap_header wr_ihdr;
+       uint64_t        wr_tsft;
+       uint8_t         wr_flags;
+       uint8_t         wr_rate;
+       uint16_t        wr_chan_freq;
+       uint16_t        wr_chan_flags;
+       int8_t          wr_dbm_antsignal;
+       int8_t          wr_dbm_antnoise;
+       uint8_t         wr_antenna;
+};
+
+#define WPI_RX_RADIOTAP_PRESENT                                                \
+       ((1 << IEEE80211_RADIOTAP_TSFT) |                               \
+        (1 << IEEE80211_RADIOTAP_FLAGS) |                              \
+        (1 << IEEE80211_RADIOTAP_RATE) |                               \
+        (1 << IEEE80211_RADIOTAP_CHANNEL) |                            \
+        (1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL) |                      \
+        (1 << IEEE80211_RADIOTAP_DBM_ANTNOISE) |                       \
+        (1 << IEEE80211_RADIOTAP_ANTENNA))
+
+struct wpi_tx_radiotap_header {
+       struct ieee80211_radiotap_header wt_ihdr;
+       uint8_t         wt_flags;
+       uint8_t         wt_rate;
+       uint16_t        wt_chan_freq;
+       uint16_t        wt_chan_flags;
+       uint8_t         wt_hwqueue;
+};
+
+#define WPI_TX_RADIOTAP_PRESENT                                                \
+       ((1 << IEEE80211_RADIOTAP_FLAGS) |                              \
+        (1 << IEEE80211_RADIOTAP_RATE) |                               \
+        (1 << IEEE80211_RADIOTAP_CHANNEL))
+
+struct wpi_dma_info {
+       bus_dma_tag_t           tag;
+       bus_dmamap_t            map;
+       bus_addr_t              paddr;        /* aligned p address */
+       bus_addr_t              paddr_start;  /* possibly unaligned p start*/
+       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;
+       struct mbuf             *m;
+       struct ieee80211_node   *ni;
+};
+
+struct wpi_tx_ring {
+       struct wpi_dma_info     desc_dma;
+       struct wpi_dma_info     cmd_dma;
+       struct wpi_tx_desc      *desc;
+       struct wpi_tx_cmd       *cmd;
+       struct wpi_tx_data      *data;
+       bus_dma_tag_t           data_dmat;
+       int                     qid;
+       int                     count;
+       int                     queued;
+       int                     cur;
+};
+
+#define WPI_RBUF_COUNT ( WPI_RX_RING_COUNT + 16 )
+
+struct wpi_rx_data {
+       bus_dmamap_t            map;
+       struct mbuf             *m;
+};
+
+struct wpi_rx_ring {
+       struct wpi_dma_info     desc_dma;
+       uint32_t                *desc;
+       struct wpi_rx_data      data[WPI_RX_RING_COUNT];
+       bus_dma_tag_t           data_dmat;
+       int                     cur;
+};
+
+struct wpi_amrr {
+       struct  ieee80211_node ni;      /* must be the first */
+       int     txcnt;
+       int     retrycnt;
+       int     success;
+       int     success_threshold;
+       int     recovery;
+};
+
+struct wpi_node {
+        struct  ieee80211_node ni;      /* must be the first */
+        struct  ieee80211_amrr_node     amn;
+};
+#define        WPI_NODE(ni)    ((struct wpi_node *)(ni))
+
+struct wpi_power_sample {
+       uint8_t index;
+       int8_t  power;
+};
+
+struct wpi_power_group {
+#define WPI_SAMPLES_COUNT      5
+       struct wpi_power_sample samples[WPI_SAMPLES_COUNT];
+       uint8_t chan;
+       int8_t  maxpwr;
+       int16_t temp;
+};
+
+struct wpi_vap {
+       struct ieee80211vap     vap;
+       struct ieee80211_amrr   amrr;
+
+       int                     (*newstate)(struct ieee80211vap *,
+                                   enum ieee80211_state, int);
+};
+#define        WPI_VAP(vap)    ((struct wpi_vap *)(vap))
+
+struct wpi_softc {
+       device_t                sc_dev;
+       struct ifnet            *sc_ifp;
+       struct lock             sc_lock;
+
+       struct fw_image         *sc_fw_image;
+
+       /* Flags indicating the current state the driver
+        * expects the hardware to be in
+        */
+       uint32_t                flags;
+#define WPI_FLAG_HW_RADIO_OFF  (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[WME_NUM_AC];
+       struct wpi_tx_ring      cmdq;
+       struct wpi_rx_ring      rxq;
+
+       /* TX Thermal Callibration */
+       struct callout          calib_to;
+       int                     calib_cnt;
+
+       /* Watch dog timer */
+       struct callout          watchdog_to;
+       /* Hardware switch polling timer */
+       struct callout          hwswitch_to;
+
+       struct resource         *irq;
+       struct resource         *mem;
+       bus_space_tag_t         sc_st;
+       bus_space_handle_t      sc_sh;
+       void                    *sc_ih;
+       int                     mem_rid;
+       int                     irq_rid;
+
+       struct wpi_config       config;
+       int                     temp;
+
+
+       int                     sc_tx_timer;
+       int                     sc_scan_timer;
+
+       struct bpf_if           *sc_drvbpf;
+
+       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_restarttask; /* reset firmware task */
+       struct task             sc_radiotask;   /* reset rf task */
+
+       /* Eeprom info */
+       uint8_t                 cap;
+       uint16_t                rev;
+       uint8_t                 type;
+       struct wpi_power_group  groups[WPI_POWER_GROUPS_COUNT];
+       int8_t                  maxpwr[IEEE80211_CHAN_MAX];
+       char                    domain[4];      /*reglatory domain XXX */
+};
+#define WPI_LOCK_INIT(_sc) \
+       lockinit(&(_sc)->sc_lock, device_get_nameunit((_sc)->sc_dev), \
+            0, LK_CANRECURSE)
+#define WPI_LOCK(_sc)          lockmgr(&(_sc)->sc_lock, LK_EXCLUSIVE)
+#define WPI_UNLOCK(_sc)                lockmgr(&(_sc)->sc_lock, LK_RELEASE)
+#define WPI_LOCK_ASSERT(sc)     KKASSERT(lockstatus(&(sc)->sc_lock, curthread) != 0)
+#define WPI_LOCK_DESTROY(_sc)  lockuninit(&(_sc)->sc_lock)