/*- * Copyright (c) 2006,2007 * Damien Bergamini * Benjamin Close * * 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" #include __FBSDID("$FreeBSD$"); /* * 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 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 "opt_wlan.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define WPI_DEBUG #ifdef WPI_DEBUG #define DPRINTF(x) do { if (wpi_debug != 0) printf x; } while (0) #define DPRINTFN(n, x) do { if (wpi_debug & n) printf x; } while (0) #define WPI_DEBUG_SET (wpi_debug != 0) enum { WPI_DEBUG_UNUSED = 0x00000001, /* Unused */ WPI_DEBUG_HW = 0x00000002, /* Stage 1 (eeprom) debugging */ WPI_DEBUG_TX = 0x00000004, /* Stage 2 TX intrp debugging*/ WPI_DEBUG_RX = 0x00000008, /* Stage 2 RX intrp debugging */ WPI_DEBUG_CMD = 0x00000010, /* Stage 2 CMD intrp debugging*/ WPI_DEBUG_FIRMWARE = 0x00000020, /* firmware(9) loading debug */ WPI_DEBUG_DMA = 0x00000040, /* DMA (de)allocations/syncs */ WPI_DEBUG_SCANNING = 0x00000080, /* Stage 2 Scanning debugging */ WPI_DEBUG_NOTIFY = 0x00000100, /* State 2 Noftif intr debug */ WPI_DEBUG_TEMP = 0x00000200, /* TXPower/Temp Calibration */ WPI_DEBUG_OPS = 0x00000400, /* wpi_ops taskq debug */ WPI_DEBUG_WATCHDOG = 0x00000800, /* Watch dog debug */ WPI_DEBUG_ANY = 0xffffffff }; static int wpi_debug = 0; 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 [IFNAMSIZ], int, enum ieee80211_opmode, int, const uint8_t [IEEE80211_ADDR_LEN], const uint8_t [IEEE80211_ADDR_LEN]); static void wpi_vap_delete(struct ieee80211vap *); static int wpi_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 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); 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 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), DEVMETHOD_END }; 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, NULL, NULL); MODULE_VERSION(wpi, 1); 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 (BUS_PROBE_DEFAULT); } } return ENXIO; } /** * Load the firmare image from disk to the allocated dma buffer. * we also maintain the reference to the firmware pointer as there * is times where we may need to reload the firmware but we are not * in a context that can access the filesystem (ie taskq cause by restart) * * @return 0 on success, an errno on failure */ static int wpi_load_firmware(struct wpi_softc *sc) { const struct firmware *fp; struct wpi_dma_info *dma = &sc->fw_dma; const struct wpi_firmware_hdr *hdr; const uint8_t *itext, *idata, *rtext, *rdata, *btext; uint32_t itextsz, idatasz, rtextsz, rdatasz, btextsz; int error; DPRINTFN(WPI_DEBUG_FIRMWARE, ("Attempting Loading Firmware from wpi_fw module\n")); WPI_UNLOCK(sc); if (sc->fw_fp == NULL && (sc->fw_fp = firmware_get("wpifw")) == NULL) { device_printf(sc->sc_dev, "could not load firmware image 'wpifw'\n"); error = ENOENT; WPI_LOCK(sc); goto fail; } fp = sc->fw_fp; WPI_LOCK(sc); /* Validate the firmware is minimum a particular version */ if (fp->version < WPI_FW_MINVERSION) { device_printf(sc->sc_dev, "firmware version is too old. Need %d, got %d\n", WPI_FW_MINVERSION, fp->version); error = ENXIO; goto fail; } if (fp->datasize < sizeof (struct wpi_firmware_hdr)) { device_printf(sc->sc_dev, "firmware file too short: %zu bytes\n", fp->datasize); error = ENXIO; goto fail; } hdr = (const struct wpi_firmware_hdr *)fp->data; /* | RUNTIME FIRMWARE | INIT FIRMWARE | BOOT FW | |HDR|<--TEXT-->|<--DATA-->|<--TEXT-->|<--DATA-->|<--TEXT-->| */ rtextsz = le32toh(hdr->rtextsz); rdatasz = le32toh(hdr->rdatasz); itextsz = le32toh(hdr->itextsz); idatasz = le32toh(hdr->idatasz); btextsz = le32toh(hdr->btextsz); /* check that all firmware segments are present */ if (fp->datasize < sizeof (struct wpi_firmware_hdr) + rtextsz + rdatasz + itextsz + idatasz + btextsz) { device_printf(sc->sc_dev, "firmware file too short: %zu bytes\n", fp->datasize); error = ENXIO; /* XXX appropriate error code? */ goto fail; } /* get pointers to firmware segments */ rtext = (const uint8_t *)(hdr + 1); rdata = rtext + rtextsz; itext = rdata + rdatasz; idata = itext + itextsz; btext = idata + idatasz; DPRINTFN(WPI_DEBUG_FIRMWARE, ("Firmware Version: Major %d, Minor %d, Driver %d, \n" "runtime (text: %u, data: %u) init (text: %u, data %u) boot (text %u)\n", (le32toh(hdr->version) & 0xff000000) >> 24, (le32toh(hdr->version) & 0x00ff0000) >> 16, (le32toh(hdr->version) & 0x0000ffff), rtextsz, rdatasz, itextsz, idatasz, btextsz)); DPRINTFN(WPI_DEBUG_FIRMWARE,("rtext 0x%x\n", *(const uint32_t *)rtext)); DPRINTFN(WPI_DEBUG_FIRMWARE,("rdata 0x%x\n", *(const uint32_t *)rdata)); DPRINTFN(WPI_DEBUG_FIRMWARE,("itext 0x%x\n", *(const uint32_t *)itext)); DPRINTFN(WPI_DEBUG_FIRMWARE,("idata 0x%x\n", *(const uint32_t *)idata)); DPRINTFN(WPI_DEBUG_FIRMWARE,("btext 0x%x\n", *(const uint32_t *)btext)); /* sanity checks */ if (rtextsz > WPI_FW_MAIN_TEXT_MAXSZ || rdatasz > WPI_FW_MAIN_DATA_MAXSZ || itextsz > WPI_FW_INIT_TEXT_MAXSZ || idatasz > WPI_FW_INIT_DATA_MAXSZ || btextsz > WPI_FW_BOOT_TEXT_MAXSZ || (btextsz & 3) != 0) { device_printf(sc->sc_dev, "firmware invalid\n"); error = EINVAL; goto fail; } /* copy initialization images into pre-allocated DMA-safe memory */ memcpy(dma->vaddr, idata, idatasz); memcpy(dma->vaddr + WPI_FW_INIT_DATA_MAXSZ, itext, itextsz); bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); /* tell adapter where to find initialization images */ wpi_mem_lock(sc); wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); wpi_mem_write(sc, WPI_MEM_DATA_SIZE, idatasz); wpi_mem_write(sc, WPI_MEM_TEXT_BASE, dma->paddr + WPI_FW_INIT_DATA_MAXSZ); wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, itextsz); wpi_mem_unlock(sc); /* load firmware boot code */ if ((error = wpi_load_microcode(sc, btext, btextsz)) != 0) { device_printf(sc->sc_dev, "Failed to load microcode\n"); goto fail; } /* now press "execute" */ WPI_WRITE(sc, WPI_RESET, 0); /* wait at most one second for the first alive notification */ if ((error = msleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) { device_printf(sc->sc_dev, "timeout waiting for adapter to initialize\n"); goto fail; } /* copy runtime images into pre-allocated DMA-sage memory */ memcpy(dma->vaddr, rdata, rdatasz); memcpy(dma->vaddr + WPI_FW_MAIN_DATA_MAXSZ, rtext, rtextsz); bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); /* tell adapter where to find runtime images */ wpi_mem_lock(sc); wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); wpi_mem_write(sc, WPI_MEM_DATA_SIZE, rdatasz); wpi_mem_write(sc, WPI_MEM_TEXT_BASE, dma->paddr + WPI_FW_MAIN_DATA_MAXSZ); wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, WPI_FW_UPDATED | rtextsz); wpi_mem_unlock(sc); /* wait at most one second for the first alive notification */ if ((error = msleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) { device_printf(sc->sc_dev, "timeout waiting for adapter to initialize2\n"); goto fail; } DPRINTFN(WPI_DEBUG_FIRMWARE, ("Firmware loaded to driver successfully\n")); return error; fail: wpi_unload_firmware(sc); return error; } /** * Free the referenced firmware image */ static void wpi_unload_firmware(struct wpi_softc *sc) { if (sc->fw_fp) { WPI_UNLOCK(sc); firmware_put(sc->fw_fp, FIRMWARE_UNLOAD); WPI_LOCK(sc); sc->fw_fp = NULL; } } static int wpi_attach(device_t dev) { struct wpi_softc *sc = device_get_softc(dev); struct ifnet *ifp; struct ieee80211com *ic; int ac, error, rid, 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_mtx(&sc->calib_to, &sc->sc_mtx, 0); callout_init_mtx(&sc->watchdog_to, &sc->sc_mtx, 0); /* disable the retry timeout register */ pci_write_config(dev, 0x41, 0, 1); /* enable bus-mastering */ pci_enable_busmaster(dev); rid = PCIR_BAR(0); sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE); if (sc->mem == NULL) { device_printf(dev, "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); rid = 0; sc->irq = bus_alloc_resource_any(dev, SYS_RES_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) { printf(": 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, ifqmaxlen); ifp->if_snd.ifq_drv_maxlen = ifqmaxlen; IFQ_SET_READY(&ifp->if_snd); ieee80211_ifattach(ic, macaddr); /* override default methods */ 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_TYPE_NET |INTR_MPSAFE, NULL, wpi_intr, sc, &sc->sc_ih); 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 (sc->irq != NULL) bus_teardown_intr(dev, sc->irq, sc->sc_ih); if (ifp != NULL) { ic = ifp->if_l2com; ieee80211_draintask(ic, &sc->sc_restarttask); ieee80211_draintask(ic, &sc->sc_radiotask); wpi_stop(sc); callout_drain(&sc->watchdog_to); callout_drain(&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_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), sc->irq); if (sc->mem != NULL) bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(sc->mem), sc->mem); if (ifp != NULL) if_free(ifp); WPI_LOCK_DESTROY(sc); return 0; } static struct ieee80211vap * wpi_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit, enum ieee80211_opmode opmode, int flags, const uint8_t bssid[IEEE80211_ADDR_LEN], const uint8_t mac[IEEE80211_ADDR_LEN]) { struct wpi_vap *wvp; struct ieee80211vap *vap; if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */ return NULL; wvp = (struct wpi_vap *) malloc(sizeof(struct wpi_vap), M_80211_VAP, M_NOWAIT | M_ZERO); if (wvp == NULL) return NULL; vap = &wvp->vap; ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac); /* 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); free(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(bus_get_dma_tag(sc->sc_dev), align, 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, reqsize, 1, reqsize, flags, NULL, NULL, &dma->tag); if (error != 0) { device_printf(sc->sc_dev, "could not create shared page DMA tag\n"); goto fail; } error = bus_dmamem_alloc(dma->tag, (void **)&dma->vaddr_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->vaddr_start != 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(bus_get_dma_tag(sc->sc_dev), 1, 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MJUMPAGESIZE, 1, MJUMPAGESIZE, BUS_DMA_NOWAIT, NULL, NULL, &ring->data_dmat); if (error != 0) { device_printf(sc->sc_dev, "%s: 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_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 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), MJUMPAGESIZE, 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++) { struct wpi_rx_data *data = &ring->data[i]; if (data->m != NULL) { bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTREAD); bus_dmamap_unload(ring->data_dmat, data->map); m_freem(data->m); } if (data->map != NULL) bus_dmamap_destroy(ring->data_dmat, data->map); } } 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 = malloc(count * sizeof (struct wpi_tx_data), M_DEVBUF, M_NOWAIT | M_ZERO); if (ring->data == NULL) { device_printf(sc->sc_dev, "could not allocate tx data slots\n"); goto fail; } error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, WPI_MAX_SCATTER - 1, MCLBYTES, BUS_DMA_NOWAIT, NULL, NULL, &ring->data_dmat); if (error != 0) { device_printf(sc->sc_dev, "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; } } free(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); struct ieee80211com *ic = sc->sc_ifp->if_l2com; ieee80211_suspend_all(ic); return 0; } static int wpi_resume(device_t dev) { struct wpi_softc *sc = device_get_softc(dev); struct ieee80211com *ic = sc->sc_ifp->if_l2com; pci_write_config(dev, 0x41, 0, 1); ieee80211_resume_all(ic); return 0; } /** * 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_SCAN && vap->iv_state != IEEE80211_S_INIT) { /* * On !INIT -> SCAN transitions, we need to clear any possible * knowledge about associations. */ error = wpi_config(sc); if (error != 0) { device_printf(sc->sc_dev, "%s: device config failed, error %d\n", __func__, error); } } if (nstate == IEEE80211_S_AUTH || (nstate == IEEE80211_S_ASSOC && vap->iv_state == IEEE80211_S_RUN)) { /* * The node must be registered in the firmware before auth. * Also the associd must be cleared on RUN -> ASSOC * transitions. */ 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; } bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTREAD); 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_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); if (mnew == NULL) { DPRINTFN(WPI_DEBUG_RX, ("%s: no mbuf to restock ring\n", __func__)); ifp->if_ierrors++; return; } bus_dmamap_unload(ring->data_dmat, data->map); error = bus_dmamap_load(ring->data_dmat, data->map, mtod(mnew, caddr_t), MJUMPAGESIZE, 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_drv_flags &= ~IFF_DRV_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; bus_dmamap_sync(sc->shared_dma.tag, sc->shared_dma.map, BUS_DMASYNC_POSTREAD); hw = le32toh(sc->shared->next); while (sc->rxq.cur != hw) { data = &sc->rxq.data[sc->rxq.cur]; bus_dmamap_sync(sc->rxq.data_dmat, data->map, BUS_DMASYNC_POSTREAD); 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_drv_flags &= ~IFF_DRV_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_PROTECTED) { 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 = 15; /* 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_PROTECTED) 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_sg(ring->data_dmat, data->map, m0, segs, &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_sg(ring->data_dmat, data->map, m0, segs, &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_drv_flags & IFF_DRV_RUNNING) == 0) return; for (;;) { IFQ_DRV_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_DRV_PREPEND(&ifp->if_snd, m); ifp->if_drv_flags |= IFF_DRV_OACTIVE; break; } ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; if (wpi_tx_data(sc, m, ni, ac) != 0) { ieee80211_free_node(ni); 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_drv_flags & IFF_DRV_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_drv_flags |= IFF_DRV_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 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_drv_flags & IFF_DRV_RUNNING)) { wpi_init_locked(sc, 0); startall = 1; } } else if ((ifp->if_drv_flags & IFF_DRV_RUNNING) || (sc->flags & WPI_FLAG_HW_RADIO_OFF)) wpi_stop_locked(sc); WPI_UNLOCK(sc); if (startall) ieee80211_start_all(ic); 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 msleep(cmd, &sc->sc_mtx, PCATCH, "wpicmd", hz); } static int wpi_wme_update(struct ieee80211com *ic) { #define WPI_EXP2(v) htole16((1 << (v)) - 1) #define WPI_USEC(v) htole16(IEEE80211_TXOP_TO_US(v)) struct wpi_softc *sc = ic->ic_ifp->if_softc; const struct wmeParams *wmep; struct wpi_wme_setup wme; int ac; /* don't override default WME values if WME is not actually enabled */ if (!(ic->ic_flags & IEEE80211_F_WME)) return 0; wme.flags = 0; for (ac = 0; ac < WME_NUM_AC; ac++) { wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac]; wme.ac[ac].aifsn = wmep->wmep_aifsn; wme.ac[ac].cwmin = WPI_EXP2(wmep->wmep_logcwmin); wme.ac[ac].cwmax = WPI_EXP2(wmep->wmep_logcwmax); wme.ac[ac].txop = WPI_USEC(wmep->wmep_txopLimit); DPRINTF(("setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d " "txop=%d\n", ac, wme.ac[ac].aifsn, wme.ac[ac].cwmin, wme.ac[ac].cwmax, wme.ac[ac].txop)); } return wpi_cmd(sc, WPI_CMD_SET_WME, &wme, sizeof wme, 1); #undef WPI_USEC #undef WPI_EXP2 } /* * Configure 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 = 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 = 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); } else { 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) { printf("Scanning Essid: "); ieee80211_print_essid(hdr->scan_essids[i].essid, hdr->scan_essids[i].esslen); printf("\n"); } #endif } /* * Build a probe request frame. Most of the following code is a * copy & paste of what is done in net80211. */ wh = (struct ieee80211_frame *)&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"); 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_drv_flags &= ~IFF_DRV_OACTIVE; ifp->if_drv_flags |= IFF_DRV_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_drv_flags &= ~IFF_DRV_OACTIVE; ifp->if_drv_flags |= IFF_DRV_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_drv_flags & IFF_DRV_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_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); sc->flags &= ~WPI_FLAG_HW_RADIO_OFF; callout_stop(&sc->watchdog_to); callout_stop(&sc->calib_to); /* disable 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_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) { WPI_LOCK(sc); error = wpi_config(sc); WPI_UNLOCK(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_drv_flags & IFF_DRV_RUNNING) callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); } #ifdef WPI_DEBUG static const char *wpi_cmd_str(int cmd) { switch (cmd) { case WPI_DISABLE_CMD: return "WPI_DISABLE_CMD"; case WPI_CMD_CONFIGURE: return "WPI_CMD_CONFIGURE"; case WPI_CMD_ASSOCIATE: return "WPI_CMD_ASSOCIATE"; case WPI_CMD_SET_WME: return "WPI_CMD_SET_WME"; case WPI_CMD_TSF: return "WPI_CMD_TSF"; case WPI_CMD_ADD_NODE: return "WPI_CMD_ADD_NODE"; case WPI_CMD_TX_DATA: return "WPI_CMD_TX_DATA"; case WPI_CMD_MRR_SETUP: return "WPI_CMD_MRR_SETUP"; case WPI_CMD_SET_LED: return "WPI_CMD_SET_LED"; case WPI_CMD_SET_POWER_MODE: return "WPI_CMD_SET_POWER_MODE"; case WPI_CMD_SCAN: return "WPI_CMD_SCAN"; case WPI_CMD_SET_BEACON:return "WPI_CMD_SET_BEACON"; case WPI_CMD_TXPOWER: return "WPI_CMD_TXPOWER"; case WPI_CMD_BLUETOOTH: return "WPI_CMD_BLUETOOTH"; default: KASSERT(1, ("Unknown Command: %d\n", cmd)); return "UNKNOWN CMD"; /* Make the compiler happy */ } } #endif MODULE_DEPEND(wpi, pci, 1, 1, 1); MODULE_DEPEND(wpi, wlan, 1, 1, 1); MODULE_DEPEND(wpi, firmware, 1, 1, 1);