/* $OpenBSD: if_rtwn.c,v 1.6 2015/08/28 00:03:53 deraadt Exp $ */ /*- * Copyright (c) 2010 Damien Bergamini * Copyright (c) 2015 Stefan Sperling * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include __FBSDID("$FreeBSD$"); /* * Driver for Realtek RTL8188CE */ #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 RTWN_DEBUG #ifdef RTWN_DEBUG #define DPRINTF(x) do { if (sc->sc_debug > 0) printf x; } while (0) #define DPRINTFN(n, x) do { if (sc->sc_debug >= (n)) printf x; } while (0) #else #define DPRINTF(x) #define DPRINTFN(n, x) #endif /* * PCI configuration space registers. */ #define RTWN_PCI_IOBA 0x10 /* i/o mapped base */ #define RTWN_PCI_MMBA 0x18 /* memory mapped base */ #define RTWN_INT_ENABLE (R92C_IMR_ROK | R92C_IMR_VODOK | R92C_IMR_VIDOK | \ R92C_IMR_BEDOK | R92C_IMR_BKDOK | R92C_IMR_MGNTDOK | \ R92C_IMR_HIGHDOK | R92C_IMR_BDOK | R92C_IMR_RDU | \ R92C_IMR_RXFOVW) struct rtwn_ident { uint16_t vendor; uint16_t device; const char *name; }; static const struct rtwn_ident rtwn_ident_table[] = { { 0x10ec, 0x8176, "Realtek RTL8188CE" }, { 0, 0, NULL } }; static void rtwn_dma_map_addr(void *, bus_dma_segment_t *, int, int); static void rtwn_setup_rx_desc(struct rtwn_softc *, struct r92c_rx_desc *, bus_addr_t, size_t, int); static int rtwn_alloc_rx_list(struct rtwn_softc *); static void rtwn_reset_rx_list(struct rtwn_softc *); static void rtwn_free_rx_list(struct rtwn_softc *); static int rtwn_alloc_tx_list(struct rtwn_softc *, int); static void rtwn_reset_tx_list(struct rtwn_softc *, int); static void rtwn_free_tx_list(struct rtwn_softc *, int); static struct ieee80211vap *rtwn_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 rtwn_vap_delete(struct ieee80211vap *); static void rtwn_write_1(struct rtwn_softc *, uint16_t, uint8_t); static void rtwn_write_2(struct rtwn_softc *, uint16_t, uint16_t); static void rtwn_write_4(struct rtwn_softc *, uint16_t, uint32_t); static uint8_t rtwn_read_1(struct rtwn_softc *, uint16_t); static uint16_t rtwn_read_2(struct rtwn_softc *, uint16_t); static uint32_t rtwn_read_4(struct rtwn_softc *, uint16_t); static int rtwn_fw_cmd(struct rtwn_softc *, uint8_t, const void *, int); static void rtwn_rf_write(struct rtwn_softc *, int, uint8_t, uint32_t); static uint32_t rtwn_rf_read(struct rtwn_softc *, int, uint8_t); static int rtwn_llt_write(struct rtwn_softc *, uint32_t, uint32_t); static uint8_t rtwn_efuse_read_1(struct rtwn_softc *, uint16_t); static void rtwn_efuse_read(struct rtwn_softc *); static int rtwn_read_chipid(struct rtwn_softc *); static void rtwn_read_rom(struct rtwn_softc *); static int rtwn_ra_init(struct rtwn_softc *); static void rtwn_tsf_sync_enable(struct rtwn_softc *); static void rtwn_set_led(struct rtwn_softc *, int, int); static void rtwn_calib_to(void *); static int rtwn_newstate(struct ieee80211vap *, enum ieee80211_state, int); static int rtwn_updateedca(struct ieee80211com *); static void rtwn_update_avgrssi(struct rtwn_softc *, int, int8_t); static int8_t rtwn_get_rssi(struct rtwn_softc *, int, void *); static void rtwn_rx_frame(struct rtwn_softc *, struct r92c_rx_desc *, struct rtwn_rx_data *, int); static int rtwn_tx(struct rtwn_softc *, struct mbuf *, struct ieee80211_node *); static void rtwn_tx_done(struct rtwn_softc *, int); static int rtwn_raw_xmit(struct ieee80211_node *, struct mbuf *, const struct ieee80211_bpf_params *); static int rtwn_transmit(struct ieee80211com *, struct mbuf *); static void rtwn_parent(struct ieee80211com *); static void rtwn_start(struct rtwn_softc *sc); static void rtwn_watchdog(void *); static int rtwn_power_on(struct rtwn_softc *); static int rtwn_llt_init(struct rtwn_softc *); static void rtwn_fw_reset(struct rtwn_softc *); static void rtwn_fw_loadpage(struct rtwn_softc *, int, const uint8_t *, int); static int rtwn_load_firmware(struct rtwn_softc *); static int rtwn_dma_init(struct rtwn_softc *); static void rtwn_mac_init(struct rtwn_softc *); static void rtwn_bb_init(struct rtwn_softc *); static void rtwn_rf_init(struct rtwn_softc *); static void rtwn_cam_init(struct rtwn_softc *); static void rtwn_pa_bias_init(struct rtwn_softc *); static void rtwn_rxfilter_init(struct rtwn_softc *); static void rtwn_edca_init(struct rtwn_softc *); static void rtwn_write_txpower(struct rtwn_softc *, int, uint16_t[]); static void rtwn_get_txpower(struct rtwn_softc *, int, struct ieee80211_channel *, struct ieee80211_channel *, uint16_t[]); static void rtwn_set_txpower(struct rtwn_softc *, struct ieee80211_channel *, struct ieee80211_channel *); static void rtwn_set_rx_bssid_all(struct rtwn_softc *, int); static void rtwn_set_gain(struct rtwn_softc *, uint8_t); static void rtwn_scan_start(struct ieee80211com *); static void rtwn_scan_end(struct ieee80211com *); static void rtwn_set_channel(struct ieee80211com *); static void rtwn_update_mcast(struct ieee80211com *); static void rtwn_set_chan(struct rtwn_softc *, struct ieee80211_channel *, struct ieee80211_channel *); static int rtwn_iq_calib_chain(struct rtwn_softc *, int, uint16_t[2], uint16_t[2]); static void rtwn_iq_calib_run(struct rtwn_softc *, int, uint16_t[2][2], uint16_t[2][2]); static int rtwn_iq_calib_compare_results(uint16_t[2][2], uint16_t[2][2], uint16_t[2][2], uint16_t[2][2], int); static void rtwn_iq_calib_write_results(struct rtwn_softc *, uint16_t[2], uint16_t[2], int); static void rtwn_iq_calib(struct rtwn_softc *); static void rtwn_lc_calib(struct rtwn_softc *); static void rtwn_temp_calib(struct rtwn_softc *); static int rtwn_init(struct rtwn_softc *); static void rtwn_stop_locked(struct rtwn_softc *); static void rtwn_stop(struct rtwn_softc *); static void rtwn_intr(void *); /* Aliases. */ #define rtwn_bb_write rtwn_write_4 #define rtwn_bb_read rtwn_read_4 static int rtwn_probe(device_t); static int rtwn_attach(device_t); static int rtwn_detach(device_t); static int rtwn_shutdown(device_t); static int rtwn_suspend(device_t); static int rtwn_resume(device_t); static device_method_t rtwn_methods[] = { /* Device interface */ DEVMETHOD(device_probe, rtwn_probe), DEVMETHOD(device_attach, rtwn_attach), DEVMETHOD(device_detach, rtwn_detach), DEVMETHOD(device_shutdown, rtwn_shutdown), DEVMETHOD(device_suspend, rtwn_suspend), DEVMETHOD(device_resume, rtwn_resume), DEVMETHOD_END }; static driver_t rtwn_driver = { "rtwn", rtwn_methods, sizeof (struct rtwn_softc) }; static devclass_t rtwn_devclass; DRIVER_MODULE(rtwn, pci, rtwn_driver, rtwn_devclass, NULL, NULL); MODULE_VERSION(rtwn, 1); MODULE_DEPEND(rtwn, pci, 1, 1, 1); MODULE_DEPEND(rtwn, wlan, 1, 1, 1); MODULE_DEPEND(rtwn, firmware, 1, 1, 1); static int rtwn_probe(device_t dev) { const struct rtwn_ident *ident; for (ident = rtwn_ident_table; ident->name != NULL; ident++) { if (pci_get_vendor(dev) == ident->vendor && pci_get_device(dev) == ident->device) { device_set_desc(dev, ident->name); return (BUS_PROBE_DEFAULT); } } return (ENXIO); } static int rtwn_attach(device_t dev) { struct rtwn_softc *sc = device_get_softc(dev); struct ieee80211com *ic = &sc->sc_ic; uint32_t lcsr; uint8_t bands[howmany(IEEE80211_MODE_MAX, 8)]; int i, count, error, rid; sc->sc_dev = dev; sc->sc_debug = 0; /* * Get the offset of the PCI Express Capability Structure in PCI * Configuration Space. */ error = pci_find_cap(dev, PCIY_EXPRESS, &sc->sc_cap_off); if (error != 0) { device_printf(dev, "PCIe capability structure not found!\n"); return (error); } /* Enable bus-mastering. */ pci_enable_busmaster(dev); rid = PCIR_BAR(2); sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE); if (sc->mem == NULL) { device_printf(dev, "can't map mem space\n"); return (ENOMEM); } sc->sc_st = rman_get_bustag(sc->mem); sc->sc_sh = rman_get_bushandle(sc->mem); /* Install interrupt handler. */ count = 1; rid = 0; if (pci_alloc_msi(dev, &count) == 0) rid = 1; sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE | (rid != 0 ? 0 : RF_SHAREABLE)); if (sc->irq == NULL) { device_printf(dev, "can't map interrupt\n"); return (ENXIO); } RTWN_LOCK_INIT(sc); callout_init_mtx(&sc->calib_to, &sc->sc_mtx, 0); callout_init_mtx(&sc->watchdog_to, &sc->sc_mtx, 0); mbufq_init(&sc->sc_snd, ifqmaxlen); error = rtwn_read_chipid(sc); if (error != 0) { device_printf(dev, "unsupported test chip\n"); goto fail; } /* Disable PCIe Active State Power Management (ASPM). */ lcsr = pci_read_config(sc->sc_dev, sc->sc_cap_off + PCIER_LINK_CTL, 4); lcsr &= ~PCIEM_LINK_CTL_ASPMC; pci_write_config(sc->sc_dev, sc->sc_cap_off + PCIER_LINK_CTL, lcsr, 4); /* Allocate Tx/Rx buffers. */ error = rtwn_alloc_rx_list(sc); if (error != 0) { device_printf(dev, "could not allocate Rx buffers\n"); goto fail; } for (i = 0; i < RTWN_NTXQUEUES; i++) { error = rtwn_alloc_tx_list(sc, i); if (error != 0) { device_printf(dev, "could not allocate Tx buffers\n"); goto fail; } } /* Determine number of Tx/Rx chains. */ if (sc->chip & RTWN_CHIP_92C) { sc->ntxchains = (sc->chip & RTWN_CHIP_92C_1T2R) ? 1 : 2; sc->nrxchains = 2; } else { sc->ntxchains = 1; sc->nrxchains = 1; } rtwn_read_rom(sc); device_printf(sc->sc_dev, "MAC/BB RTL%s, RF 6052 %dT%dR\n", (sc->chip & RTWN_CHIP_92C) ? "8192CE" : "8188CE", sc->ntxchains, sc->nrxchains); ic->ic_softc = sc; ic->ic_name = device_get_nameunit(dev); ic->ic_opmode = IEEE80211_M_STA; ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ /* set device capabilities */ ic->ic_caps = IEEE80211_C_STA /* station mode */ | IEEE80211_C_MONITOR /* monitor mode */ | IEEE80211_C_SHPREAMBLE /* short preamble supported */ | IEEE80211_C_SHSLOT /* short slot time supported */ | IEEE80211_C_WPA /* capable of WPA1+WPA2 */ | IEEE80211_C_BGSCAN /* capable of bg scanning */ | IEEE80211_C_WME /* 802.11e */ ; memset(bands, 0, sizeof(bands)); setbit(bands, IEEE80211_MODE_11B); setbit(bands, IEEE80211_MODE_11G); ieee80211_init_channels(ic, NULL, bands); ieee80211_ifattach(ic); ic->ic_wme.wme_update = rtwn_updateedca; ic->ic_update_mcast = rtwn_update_mcast; ic->ic_scan_start =rtwn_scan_start; ic->ic_scan_end = rtwn_scan_end; ic->ic_set_channel = rtwn_set_channel; ic->ic_raw_xmit = rtwn_raw_xmit; ic->ic_transmit = rtwn_transmit; ic->ic_parent = rtwn_parent; ic->ic_vap_create = rtwn_vap_create; ic->ic_vap_delete = rtwn_vap_delete; ieee80211_radiotap_attach(ic, &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap), RTWN_TX_RADIOTAP_PRESENT, &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap), RTWN_RX_RADIOTAP_PRESENT); /* * Hook our interrupt after all initialization is complete. */ error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE, NULL, rtwn_intr, sc, &sc->sc_ih); if (error != 0) { device_printf(dev, "can't establish interrupt, error %d\n", error); goto fail; } if (bootverbose) ieee80211_announce(ic); return (0); fail: rtwn_detach(dev); return (error); } static int rtwn_detach(device_t dev) { struct rtwn_softc *sc = device_get_softc(dev); int i; if (sc->sc_ic.ic_softc != NULL) { rtwn_stop(sc); callout_drain(&sc->calib_to); callout_drain(&sc->watchdog_to); ieee80211_ifdetach(&sc->sc_ic); mbufq_drain(&sc->sc_snd); } /* Uninstall interrupt handler. */ if (sc->irq != NULL) { bus_teardown_intr(dev, sc->irq, sc->sc_ih); bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), sc->irq); pci_release_msi(dev); } /* Free Tx/Rx buffers. */ for (i = 0; i < RTWN_NTXQUEUES; i++) rtwn_free_tx_list(sc, i); rtwn_free_rx_list(sc); if (sc->mem != NULL) bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(sc->mem), sc->mem); RTWN_LOCK_DESTROY(sc); return (0); } static int rtwn_shutdown(device_t dev) { return (0); } static int rtwn_suspend(device_t dev) { return (0); } static int rtwn_resume(device_t dev) { return (0); } static void rtwn_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nsegs, int error) { if (error != 0) return; KASSERT(nsegs == 1, ("too many DMA segments, %d should be 1", nsegs)); *(bus_addr_t *)arg = segs[0].ds_addr; } static void rtwn_setup_rx_desc(struct rtwn_softc *sc, struct r92c_rx_desc *desc, bus_addr_t addr, size_t len, int idx) { memset(desc, 0, sizeof(*desc)); desc->rxdw0 = htole32(SM(R92C_RXDW0_PKTLEN, len) | ((idx == RTWN_RX_LIST_COUNT - 1) ? R92C_RXDW0_EOR : 0)); desc->rxbufaddr = htole32(addr); bus_space_barrier(sc->sc_st, sc->sc_sh, 0, sc->sc_mapsize, BUS_SPACE_BARRIER_WRITE); desc->rxdw0 |= htole32(R92C_RXDW0_OWN); } static int rtwn_alloc_rx_list(struct rtwn_softc *sc) { struct rtwn_rx_ring *rx_ring = &sc->rx_ring; struct rtwn_rx_data *rx_data; bus_size_t size; int i, error; /* Allocate Rx descriptors. */ size = sizeof(struct r92c_rx_desc) * RTWN_RX_LIST_COUNT; error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, size, 1, size, 0, NULL, NULL, &rx_ring->desc_dmat); if (error != 0) { device_printf(sc->sc_dev, "could not create rx desc DMA tag\n"); goto fail; } error = bus_dmamem_alloc(rx_ring->desc_dmat, (void **)&rx_ring->desc, BUS_DMA_NOWAIT | BUS_DMA_ZERO | BUS_DMA_COHERENT, &rx_ring->desc_map); if (error != 0) { device_printf(sc->sc_dev, "could not allocate rx desc\n"); goto fail; } error = bus_dmamap_load(rx_ring->desc_dmat, rx_ring->desc_map, rx_ring->desc, size, rtwn_dma_map_addr, &rx_ring->paddr, 0); if (error != 0) { device_printf(sc->sc_dev, "could not load rx desc DMA map\n"); goto fail; } bus_dmamap_sync(rx_ring->desc_dmat, rx_ring->desc_map, BUS_DMASYNC_PREWRITE); /* Create RX buffer DMA tag. */ error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1, MCLBYTES, 0, NULL, NULL, &rx_ring->data_dmat); if (error != 0) { device_printf(sc->sc_dev, "could not create rx buf DMA tag\n"); goto fail; } /* Allocate Rx buffers. */ for (i = 0; i < RTWN_RX_LIST_COUNT; i++) { rx_data = &rx_ring->rx_data[i]; error = bus_dmamap_create(rx_ring->data_dmat, 0, &rx_data->map); if (error != 0) { device_printf(sc->sc_dev, "could not create rx buf DMA map\n"); goto fail; } rx_data->m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); if (rx_data->m == NULL) { device_printf(sc->sc_dev, "could not allocate rx mbuf\n"); error = ENOMEM; goto fail; } error = bus_dmamap_load(rx_ring->data_dmat, rx_data->map, mtod(rx_data->m, void *), MCLBYTES, rtwn_dma_map_addr, &rx_data->paddr, BUS_DMA_NOWAIT); if (error != 0) { device_printf(sc->sc_dev, "could not load rx buf DMA map"); goto fail; } rtwn_setup_rx_desc(sc, &rx_ring->desc[i], rx_data->paddr, MCLBYTES, i); } return (0); fail: rtwn_free_rx_list(sc); return (error); } static void rtwn_reset_rx_list(struct rtwn_softc *sc) { struct rtwn_rx_ring *rx_ring = &sc->rx_ring; struct rtwn_rx_data *rx_data; int i; for (i = 0; i < RTWN_RX_LIST_COUNT; i++) { rx_data = &rx_ring->rx_data[i]; rtwn_setup_rx_desc(sc, &rx_ring->desc[i], rx_data->paddr, MCLBYTES, i); } } static void rtwn_free_rx_list(struct rtwn_softc *sc) { struct rtwn_rx_ring *rx_ring = &sc->rx_ring; struct rtwn_rx_data *rx_data; int i; if (rx_ring->desc_dmat != NULL) { if (rx_ring->desc != NULL) { bus_dmamap_unload(rx_ring->desc_dmat, rx_ring->desc_map); bus_dmamem_free(rx_ring->desc_dmat, rx_ring->desc, rx_ring->desc_map); rx_ring->desc = NULL; } bus_dma_tag_destroy(rx_ring->desc_dmat); rx_ring->desc_dmat = NULL; } for (i = 0; i < RTWN_RX_LIST_COUNT; i++) { rx_data = &rx_ring->rx_data[i]; if (rx_data->m != NULL) { bus_dmamap_unload(rx_ring->data_dmat, rx_data->map); m_freem(rx_data->m); rx_data->m = NULL; } bus_dmamap_destroy(rx_ring->data_dmat, rx_data->map); rx_data->map = NULL; } if (rx_ring->data_dmat != NULL) { bus_dma_tag_destroy(rx_ring->data_dmat); rx_ring->data_dmat = NULL; } } static int rtwn_alloc_tx_list(struct rtwn_softc *sc, int qid) { struct rtwn_tx_ring *tx_ring = &sc->tx_ring[qid]; struct rtwn_tx_data *tx_data; bus_size_t size; int i, error; size = sizeof(struct r92c_tx_desc) * RTWN_TX_LIST_COUNT; error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), PAGE_SIZE, 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, size, 1, size, 0, NULL, NULL, &tx_ring->desc_dmat); if (error != 0) { device_printf(sc->sc_dev, "could not create tx ring DMA tag\n"); goto fail; } error = bus_dmamem_alloc(tx_ring->desc_dmat, (void **)&tx_ring->desc, BUS_DMA_NOWAIT | BUS_DMA_ZERO, &tx_ring->desc_map); if (error != 0) { device_printf(sc->sc_dev, "can't map tx ring DMA memory\n"); goto fail; } error = bus_dmamap_load(tx_ring->desc_dmat, tx_ring->desc_map, tx_ring->desc, size, rtwn_dma_map_addr, &tx_ring->paddr, BUS_DMA_NOWAIT); if (error != 0) { device_printf(sc->sc_dev, "could not load desc DMA map\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, 1, MCLBYTES, 0, NULL, NULL, &tx_ring->data_dmat); if (error != 0) { device_printf(sc->sc_dev, "could not create tx buf DMA tag\n"); goto fail; } for (i = 0; i < RTWN_TX_LIST_COUNT; i++) { struct r92c_tx_desc *desc = &tx_ring->desc[i]; /* setup tx desc */ desc->nextdescaddr = htole32(tx_ring->paddr + + sizeof(struct r92c_tx_desc) * ((i + 1) % RTWN_TX_LIST_COUNT)); tx_data = &tx_ring->tx_data[i]; error = bus_dmamap_create(tx_ring->data_dmat, 0, &tx_data->map); if (error != 0) { device_printf(sc->sc_dev, "could not create tx buf DMA map\n"); goto fail; } tx_data->m = NULL; tx_data->ni = NULL; } return (0); fail: rtwn_free_tx_list(sc, qid); return (error); } static void rtwn_reset_tx_list(struct rtwn_softc *sc, int qid) { struct rtwn_tx_ring *tx_ring = &sc->tx_ring[qid]; int i; for (i = 0; i < RTWN_TX_LIST_COUNT; i++) { struct r92c_tx_desc *desc = &tx_ring->desc[i]; struct rtwn_tx_data *tx_data = &tx_ring->tx_data[i]; memset(desc, 0, sizeof(*desc) - (sizeof(desc->reserved) + sizeof(desc->nextdescaddr64) + sizeof(desc->nextdescaddr))); if (tx_data->m != NULL) { bus_dmamap_unload(tx_ring->data_dmat, tx_data->map); m_freem(tx_data->m); tx_data->m = NULL; } if (tx_data->ni != NULL) { ieee80211_free_node(tx_data->ni); tx_data->ni = NULL; } } bus_dmamap_sync(tx_ring->desc_dmat, tx_ring->desc_map, BUS_DMASYNC_POSTWRITE); sc->qfullmsk &= ~(1 << qid); tx_ring->queued = 0; tx_ring->cur = 0; } static void rtwn_free_tx_list(struct rtwn_softc *sc, int qid) { struct rtwn_tx_ring *tx_ring = &sc->tx_ring[qid]; struct rtwn_tx_data *tx_data; int i; if (tx_ring->desc_dmat != NULL) { if (tx_ring->desc != NULL) { bus_dmamap_unload(tx_ring->desc_dmat, tx_ring->desc_map); bus_dmamem_free(tx_ring->desc_dmat, tx_ring->desc, tx_ring->desc_map); } bus_dma_tag_destroy(tx_ring->desc_dmat); } for (i = 0; i < RTWN_TX_LIST_COUNT; i++) { tx_data = &tx_ring->tx_data[i]; if (tx_data->m != NULL) { bus_dmamap_unload(tx_ring->data_dmat, tx_data->map); m_freem(tx_data->m); tx_data->m = NULL; } } if (tx_ring->data_dmat != NULL) { bus_dma_tag_destroy(tx_ring->data_dmat); tx_ring->data_dmat = NULL; } sc->qfullmsk &= ~(1 << qid); tx_ring->queued = 0; tx_ring->cur = 0; } static struct ieee80211vap * rtwn_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 rtwn_vap *rvp; struct ieee80211vap *vap; if (!TAILQ_EMPTY(&ic->ic_vaps)) return (NULL); rvp = malloc(sizeof(struct rtwn_vap), M_80211_VAP, M_WAITOK | M_ZERO); vap = &rvp->vap; if (ieee80211_vap_setup(ic, vap, name, unit, opmode, flags | IEEE80211_CLONE_NOBEACONS, bssid) != 0) { /* out of memory */ free(rvp, M_80211_VAP); return (NULL); } /* Override state transition machine. */ rvp->newstate = vap->iv_newstate; vap->iv_newstate = rtwn_newstate; /* Complete setup. */ ieee80211_vap_attach(vap, ieee80211_media_change, ieee80211_media_status, mac); ic->ic_opmode = opmode; return (vap); } static void rtwn_vap_delete(struct ieee80211vap *vap) { struct rtwn_vap *rvp = RTWN_VAP(vap); ieee80211_vap_detach(vap); free(rvp, M_80211_VAP); } static void rtwn_write_1(struct rtwn_softc *sc, uint16_t addr, uint8_t val) { bus_space_write_1(sc->sc_st, sc->sc_sh, addr, val); } static void rtwn_write_2(struct rtwn_softc *sc, uint16_t addr, uint16_t val) { val = htole16(val); bus_space_write_2(sc->sc_st, sc->sc_sh, addr, val); } static void rtwn_write_4(struct rtwn_softc *sc, uint16_t addr, uint32_t val) { val = htole32(val); bus_space_write_4(sc->sc_st, sc->sc_sh, addr, val); } static uint8_t rtwn_read_1(struct rtwn_softc *sc, uint16_t addr) { return (bus_space_read_1(sc->sc_st, sc->sc_sh, addr)); } static uint16_t rtwn_read_2(struct rtwn_softc *sc, uint16_t addr) { return (bus_space_read_2(sc->sc_st, sc->sc_sh, addr)); } static uint32_t rtwn_read_4(struct rtwn_softc *sc, uint16_t addr) { return (bus_space_read_4(sc->sc_st, sc->sc_sh, addr)); } static int rtwn_fw_cmd(struct rtwn_softc *sc, uint8_t id, const void *buf, int len) { struct r92c_fw_cmd cmd; int ntries; /* Wait for current FW box to be empty. */ for (ntries = 0; ntries < 100; ntries++) { if (!(rtwn_read_1(sc, R92C_HMETFR) & (1 << sc->fwcur))) break; DELAY(1); } if (ntries == 100) { device_printf(sc->sc_dev, "could not send firmware command %d\n", id); return (ETIMEDOUT); } memset(&cmd, 0, sizeof(cmd)); cmd.id = id; if (len > 3) cmd.id |= R92C_CMD_FLAG_EXT; KASSERT(len <= sizeof(cmd.msg), ("rtwn_fw_cmd\n")); memcpy(cmd.msg, buf, len); /* Write the first word last since that will trigger the FW. */ rtwn_write_2(sc, R92C_HMEBOX_EXT(sc->fwcur), *((uint8_t *)&cmd + 4)); rtwn_write_4(sc, R92C_HMEBOX(sc->fwcur), *((uint8_t *)&cmd + 0)); sc->fwcur = (sc->fwcur + 1) % R92C_H2C_NBOX; /* Give firmware some time for processing. */ DELAY(2000); return (0); } static void rtwn_rf_write(struct rtwn_softc *sc, int chain, uint8_t addr, uint32_t val) { rtwn_bb_write(sc, R92C_LSSI_PARAM(chain), SM(R92C_LSSI_PARAM_ADDR, addr) | SM(R92C_LSSI_PARAM_DATA, val)); } static uint32_t rtwn_rf_read(struct rtwn_softc *sc, int chain, uint8_t addr) { uint32_t reg[R92C_MAX_CHAINS], val; reg[0] = rtwn_bb_read(sc, R92C_HSSI_PARAM2(0)); if (chain != 0) reg[chain] = rtwn_bb_read(sc, R92C_HSSI_PARAM2(chain)); rtwn_bb_write(sc, R92C_HSSI_PARAM2(0), reg[0] & ~R92C_HSSI_PARAM2_READ_EDGE); DELAY(1000); rtwn_bb_write(sc, R92C_HSSI_PARAM2(chain), RW(reg[chain], R92C_HSSI_PARAM2_READ_ADDR, addr) | R92C_HSSI_PARAM2_READ_EDGE); DELAY(1000); rtwn_bb_write(sc, R92C_HSSI_PARAM2(0), reg[0] | R92C_HSSI_PARAM2_READ_EDGE); DELAY(1000); if (rtwn_bb_read(sc, R92C_HSSI_PARAM1(chain)) & R92C_HSSI_PARAM1_PI) val = rtwn_bb_read(sc, R92C_HSPI_READBACK(chain)); else val = rtwn_bb_read(sc, R92C_LSSI_READBACK(chain)); return (MS(val, R92C_LSSI_READBACK_DATA)); } static int rtwn_llt_write(struct rtwn_softc *sc, uint32_t addr, uint32_t data) { int ntries; rtwn_write_4(sc, R92C_LLT_INIT, SM(R92C_LLT_INIT_OP, R92C_LLT_INIT_OP_WRITE) | SM(R92C_LLT_INIT_ADDR, addr) | SM(R92C_LLT_INIT_DATA, data)); /* Wait for write operation to complete. */ for (ntries = 0; ntries < 20; ntries++) { if (MS(rtwn_read_4(sc, R92C_LLT_INIT), R92C_LLT_INIT_OP) == R92C_LLT_INIT_OP_NO_ACTIVE) return (0); DELAY(5); } return (ETIMEDOUT); } static uint8_t rtwn_efuse_read_1(struct rtwn_softc *sc, uint16_t addr) { uint32_t reg; int ntries; reg = rtwn_read_4(sc, R92C_EFUSE_CTRL); reg = RW(reg, R92C_EFUSE_CTRL_ADDR, addr); reg &= ~R92C_EFUSE_CTRL_VALID; rtwn_write_4(sc, R92C_EFUSE_CTRL, reg); /* Wait for read operation to complete. */ for (ntries = 0; ntries < 100; ntries++) { reg = rtwn_read_4(sc, R92C_EFUSE_CTRL); if (reg & R92C_EFUSE_CTRL_VALID) return (MS(reg, R92C_EFUSE_CTRL_DATA)); DELAY(5); } device_printf(sc->sc_dev, "could not read efuse byte at address 0x%x\n", addr); return (0xff); } static void rtwn_efuse_read(struct rtwn_softc *sc) { uint8_t *rom = (uint8_t *)&sc->rom; uint16_t addr = 0; uint32_t reg; uint8_t off, msk; int i; reg = rtwn_read_2(sc, R92C_SYS_ISO_CTRL); if (!(reg & R92C_SYS_ISO_CTRL_PWC_EV12V)) { rtwn_write_2(sc, R92C_SYS_ISO_CTRL, reg | R92C_SYS_ISO_CTRL_PWC_EV12V); } reg = rtwn_read_2(sc, R92C_SYS_FUNC_EN); if (!(reg & R92C_SYS_FUNC_EN_ELDR)) { rtwn_write_2(sc, R92C_SYS_FUNC_EN, reg | R92C_SYS_FUNC_EN_ELDR); } reg = rtwn_read_2(sc, R92C_SYS_CLKR); if ((reg & (R92C_SYS_CLKR_LOADER_EN | R92C_SYS_CLKR_ANA8M)) != (R92C_SYS_CLKR_LOADER_EN | R92C_SYS_CLKR_ANA8M)) { rtwn_write_2(sc, R92C_SYS_CLKR, reg | R92C_SYS_CLKR_LOADER_EN | R92C_SYS_CLKR_ANA8M); } memset(&sc->rom, 0xff, sizeof(sc->rom)); while (addr < 512) { reg = rtwn_efuse_read_1(sc, addr); if (reg == 0xff) break; addr++; off = reg >> 4; msk = reg & 0xf; for (i = 0; i < 4; i++) { if (msk & (1 << i)) continue; rom[off * 8 + i * 2 + 0] = rtwn_efuse_read_1(sc, addr); addr++; rom[off * 8 + i * 2 + 1] = rtwn_efuse_read_1(sc, addr); addr++; } } #ifdef RTWN_DEBUG if (sc->sc_debug >= 2) { /* Dump ROM content. */ printf("\n"); for (i = 0; i < sizeof(sc->rom); i++) printf("%02x:", rom[i]); printf("\n"); } #endif } static int rtwn_read_chipid(struct rtwn_softc *sc) { uint32_t reg; reg = rtwn_read_4(sc, R92C_SYS_CFG); if (reg & R92C_SYS_CFG_TRP_VAUX_EN) /* Unsupported test chip. */ return (EIO); if (reg & R92C_SYS_CFG_TYPE_92C) { sc->chip |= RTWN_CHIP_92C; /* Check if it is a castrated 8192C. */ if (MS(rtwn_read_4(sc, R92C_HPON_FSM), R92C_HPON_FSM_CHIP_BONDING_ID) == R92C_HPON_FSM_CHIP_BONDING_ID_92C_1T2R) sc->chip |= RTWN_CHIP_92C_1T2R; } if (reg & R92C_SYS_CFG_VENDOR_UMC) { sc->chip |= RTWN_CHIP_UMC; if (MS(reg, R92C_SYS_CFG_CHIP_VER_RTL) == 0) sc->chip |= RTWN_CHIP_UMC_A_CUT; } return (0); } static void rtwn_read_rom(struct rtwn_softc *sc) { struct r92c_rom *rom = &sc->rom; /* Read full ROM image. */ rtwn_efuse_read(sc); if (rom->id != 0x8129) device_printf(sc->sc_dev, "invalid EEPROM ID 0x%x\n", rom->id); /* XXX Weird but this is what the vendor driver does. */ sc->pa_setting = rtwn_efuse_read_1(sc, 0x1fa); DPRINTF(("PA setting=0x%x\n", sc->pa_setting)); sc->board_type = MS(rom->rf_opt1, R92C_ROM_RF1_BOARD_TYPE); sc->regulatory = MS(rom->rf_opt1, R92C_ROM_RF1_REGULATORY); DPRINTF(("regulatory type=%d\n", sc->regulatory)); IEEE80211_ADDR_COPY(sc->sc_ic.ic_macaddr, rom->macaddr); } /* * Initialize rate adaptation in firmware. */ static int rtwn_ra_init(struct rtwn_softc *sc) { static const uint8_t map[] = { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 }; struct ieee80211com *ic = &sc->sc_ic; struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); struct ieee80211_node *ni = ieee80211_ref_node(vap->iv_bss); struct ieee80211_rateset *rs = &ni->ni_rates; struct r92c_fw_cmd_macid_cfg cmd; uint32_t rates, basicrates; uint8_t mode; int maxrate, maxbasicrate, error, i, j; /* Get normal and basic rates mask. */ rates = basicrates = 0; maxrate = maxbasicrate = 0; for (i = 0; i < rs->rs_nrates; i++) { /* Convert 802.11 rate to HW rate index. */ for (j = 0; j < nitems(map); j++) if ((rs->rs_rates[i] & IEEE80211_RATE_VAL) == map[j]) break; if (j == nitems(map)) /* Unknown rate, skip. */ continue; rates |= 1 << j; if (j > maxrate) maxrate = j; if (rs->rs_rates[i] & IEEE80211_RATE_BASIC) { basicrates |= 1 << j; if (j > maxbasicrate) maxbasicrate = j; } } if (ic->ic_curmode == IEEE80211_MODE_11B) mode = R92C_RAID_11B; else mode = R92C_RAID_11BG; DPRINTF(("mode=0x%x rates=0x%08x, basicrates=0x%08x\n", mode, rates, basicrates)); /* Set rates mask for group addressed frames. */ cmd.macid = RTWN_MACID_BC | RTWN_MACID_VALID; cmd.mask = htole32(mode << 28 | basicrates); error = rtwn_fw_cmd(sc, R92C_CMD_MACID_CONFIG, &cmd, sizeof(cmd)); if (error != 0) { device_printf(sc->sc_dev, "could not add broadcast station\n"); return (error); } /* Set initial MRR rate. */ DPRINTF(("maxbasicrate=%d\n", maxbasicrate)); rtwn_write_1(sc, R92C_INIDATA_RATE_SEL(RTWN_MACID_BC), maxbasicrate); /* Set rates mask for unicast frames. */ cmd.macid = RTWN_MACID_BSS | RTWN_MACID_VALID; cmd.mask = htole32(mode << 28 | rates); error = rtwn_fw_cmd(sc, R92C_CMD_MACID_CONFIG, &cmd, sizeof(cmd)); if (error != 0) { device_printf(sc->sc_dev, "could not add BSS station\n"); return (error); } /* Set initial MRR rate. */ DPRINTF(("maxrate=%d\n", maxrate)); rtwn_write_1(sc, R92C_INIDATA_RATE_SEL(RTWN_MACID_BSS), maxrate); /* Configure Automatic Rate Fallback Register. */ if (ic->ic_curmode == IEEE80211_MODE_11B) { if (rates & 0x0c) rtwn_write_4(sc, R92C_ARFR(0), htole32(rates & 0x0d)); else rtwn_write_4(sc, R92C_ARFR(0), htole32(rates & 0x0f)); } else rtwn_write_4(sc, R92C_ARFR(0), htole32(rates & 0x0ff5)); /* Indicate highest supported rate. */ ni->ni_txrate = rs->rs_rates[rs->rs_nrates - 1]; return (0); } static void rtwn_tsf_sync_enable(struct rtwn_softc *sc) { struct ieee80211com *ic = &sc->sc_ic; struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); struct ieee80211_node *ni = vap->iv_bss; uint64_t tsf; /* Enable TSF synchronization. */ rtwn_write_1(sc, R92C_BCN_CTRL, rtwn_read_1(sc, R92C_BCN_CTRL) & ~R92C_BCN_CTRL_DIS_TSF_UDT0); rtwn_write_1(sc, R92C_BCN_CTRL, rtwn_read_1(sc, R92C_BCN_CTRL) & ~R92C_BCN_CTRL_EN_BCN); /* Set initial TSF. */ memcpy(&tsf, ni->ni_tstamp.data, 8); tsf = le64toh(tsf); tsf = tsf - (tsf % (vap->iv_bss->ni_intval * IEEE80211_DUR_TU)); tsf -= IEEE80211_DUR_TU; rtwn_write_4(sc, R92C_TSFTR + 0, tsf); rtwn_write_4(sc, R92C_TSFTR + 4, tsf >> 32); rtwn_write_1(sc, R92C_BCN_CTRL, rtwn_read_1(sc, R92C_BCN_CTRL) | R92C_BCN_CTRL_EN_BCN); } static void rtwn_set_led(struct rtwn_softc *sc, int led, int on) { uint8_t reg; if (led == RTWN_LED_LINK) { reg = rtwn_read_1(sc, R92C_LEDCFG2) & 0xf0; if (!on) reg |= R92C_LEDCFG2_DIS; else reg |= R92C_LEDCFG2_EN; rtwn_write_1(sc, R92C_LEDCFG2, reg); sc->ledlink = on; /* Save LED state. */ } } static void rtwn_calib_to(void *arg) { struct rtwn_softc *sc = arg; struct r92c_fw_cmd_rssi cmd; if (sc->avg_pwdb != -1) { /* Indicate Rx signal strength to FW for rate adaptation. */ memset(&cmd, 0, sizeof(cmd)); cmd.macid = 0; /* BSS. */ cmd.pwdb = sc->avg_pwdb; DPRINTFN(3, ("sending RSSI command avg=%d\n", sc->avg_pwdb)); rtwn_fw_cmd(sc, R92C_CMD_RSSI_SETTING, &cmd, sizeof(cmd)); } /* Do temperature compensation. */ rtwn_temp_calib(sc); callout_reset(&sc->calib_to, hz * 2, rtwn_calib_to, sc); } static int rtwn_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) { struct rtwn_vap *rvp = RTWN_VAP(vap); struct ieee80211com *ic = vap->iv_ic; struct ieee80211_node *ni = vap->iv_bss; struct rtwn_softc *sc = ic->ic_softc; uint32_t reg; IEEE80211_UNLOCK(ic); RTWN_LOCK(sc); if (vap->iv_state == IEEE80211_S_RUN) { /* Stop calibration. */ callout_stop(&sc->calib_to); /* Turn link LED off. */ rtwn_set_led(sc, RTWN_LED_LINK, 0); /* Set media status to 'No Link'. */ reg = rtwn_read_4(sc, R92C_CR); reg = RW(reg, R92C_CR_NETTYPE, R92C_CR_NETTYPE_NOLINK); rtwn_write_4(sc, R92C_CR, reg); /* Stop Rx of data frames. */ rtwn_write_2(sc, R92C_RXFLTMAP2, 0); /* Rest TSF. */ rtwn_write_1(sc, R92C_DUAL_TSF_RST, 0x03); /* Disable TSF synchronization. */ rtwn_write_1(sc, R92C_BCN_CTRL, rtwn_read_1(sc, R92C_BCN_CTRL) | R92C_BCN_CTRL_DIS_TSF_UDT0); /* Reset EDCA parameters. */ rtwn_write_4(sc, R92C_EDCA_VO_PARAM, 0x002f3217); rtwn_write_4(sc, R92C_EDCA_VI_PARAM, 0x005e4317); rtwn_write_4(sc, R92C_EDCA_BE_PARAM, 0x00105320); rtwn_write_4(sc, R92C_EDCA_BK_PARAM, 0x0000a444); } switch (nstate) { case IEEE80211_S_INIT: /* Turn link LED off. */ rtwn_set_led(sc, RTWN_LED_LINK, 0); break; case IEEE80211_S_SCAN: /* Make link LED blink during scan. */ rtwn_set_led(sc, RTWN_LED_LINK, !sc->ledlink); /* Pause AC Tx queues. */ rtwn_write_1(sc, R92C_TXPAUSE, rtwn_read_1(sc, R92C_TXPAUSE) | 0x0f); break; case IEEE80211_S_AUTH: rtwn_set_chan(sc, ic->ic_curchan, NULL); break; case IEEE80211_S_RUN: if (ic->ic_opmode == IEEE80211_M_MONITOR) { /* Enable Rx of data frames. */ rtwn_write_2(sc, R92C_RXFLTMAP2, 0xffff); /* Turn link LED on. */ rtwn_set_led(sc, RTWN_LED_LINK, 1); break; } /* Set media status to 'Associated'. */ reg = rtwn_read_4(sc, R92C_CR); reg = RW(reg, R92C_CR_NETTYPE, R92C_CR_NETTYPE_INFRA); rtwn_write_4(sc, R92C_CR, reg); /* Set BSSID. */ rtwn_write_4(sc, R92C_BSSID + 0, le32dec(&ni->ni_bssid[0])); rtwn_write_4(sc, R92C_BSSID + 4, le16dec(&ni->ni_bssid[4])); if (ic->ic_curmode == IEEE80211_MODE_11B) rtwn_write_1(sc, R92C_INIRTS_RATE_SEL, 0); else /* 802.11b/g */ rtwn_write_1(sc, R92C_INIRTS_RATE_SEL, 3); /* Enable Rx of data frames. */ rtwn_write_2(sc, R92C_RXFLTMAP2, 0xffff); /* Flush all AC queues. */ rtwn_write_1(sc, R92C_TXPAUSE, 0); /* Set beacon interval. */ rtwn_write_2(sc, R92C_BCN_INTERVAL, ni->ni_intval); /* Allow Rx from our BSSID only. */ rtwn_write_4(sc, R92C_RCR, rtwn_read_4(sc, R92C_RCR) | R92C_RCR_CBSSID_DATA | R92C_RCR_CBSSID_BCN); /* Enable TSF synchronization. */ rtwn_tsf_sync_enable(sc); rtwn_write_1(sc, R92C_SIFS_CCK + 1, 10); rtwn_write_1(sc, R92C_SIFS_OFDM + 1, 10); rtwn_write_1(sc, R92C_SPEC_SIFS + 1, 10); rtwn_write_1(sc, R92C_MAC_SPEC_SIFS + 1, 10); rtwn_write_1(sc, R92C_R2T_SIFS + 1, 10); rtwn_write_1(sc, R92C_T2T_SIFS + 1, 10); /* Intialize rate adaptation. */ rtwn_ra_init(sc); /* Turn link LED on. */ rtwn_set_led(sc, RTWN_LED_LINK, 1); sc->avg_pwdb = -1; /* Reset average RSSI. */ /* Reset temperature calibration state machine. */ sc->thcal_state = 0; sc->thcal_lctemp = 0; /* Start periodic calibration. */ callout_reset(&sc->calib_to, hz * 2, rtwn_calib_to, sc); break; default: break; } RTWN_UNLOCK(sc); IEEE80211_LOCK(ic); return (rvp->newstate(vap, nstate, arg)); } static int rtwn_updateedca(struct ieee80211com *ic) { struct rtwn_softc *sc = ic->ic_softc; const uint16_t aci2reg[WME_NUM_AC] = { R92C_EDCA_BE_PARAM, R92C_EDCA_BK_PARAM, R92C_EDCA_VI_PARAM, R92C_EDCA_VO_PARAM }; int aci, aifs, slottime; IEEE80211_LOCK(ic); slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20; for (aci = 0; aci < WME_NUM_AC; aci++) { const struct wmeParams *ac = &ic->ic_wme.wme_chanParams.cap_wmeParams[aci]; /* AIFS[AC] = AIFSN[AC] * aSlotTime + aSIFSTime. */ aifs = ac->wmep_aifsn * slottime + 10; rtwn_write_4(sc, aci2reg[aci], SM(R92C_EDCA_PARAM_TXOP, ac->wmep_txopLimit) | SM(R92C_EDCA_PARAM_ECWMIN, ac->wmep_logcwmin) | SM(R92C_EDCA_PARAM_ECWMAX, ac->wmep_logcwmax) | SM(R92C_EDCA_PARAM_AIFS, aifs)); } IEEE80211_UNLOCK(ic); return (0); } static void rtwn_update_avgrssi(struct rtwn_softc *sc, int rate, int8_t rssi) { int pwdb; /* Convert antenna signal to percentage. */ if (rssi <= -100 || rssi >= 20) pwdb = 0; else if (rssi >= 0) pwdb = 100; else pwdb = 100 + rssi; if (rate <= 3) { /* CCK gain is smaller than OFDM/MCS gain. */ pwdb += 6; if (pwdb > 100) pwdb = 100; if (pwdb <= 14) pwdb -= 4; else if (pwdb <= 26) pwdb -= 8; else if (pwdb <= 34) pwdb -= 6; else if (pwdb <= 42) pwdb -= 2; } if (sc->avg_pwdb == -1) /* Init. */ sc->avg_pwdb = pwdb; else if (sc->avg_pwdb < pwdb) sc->avg_pwdb = ((sc->avg_pwdb * 19 + pwdb) / 20) + 1; else sc->avg_pwdb = ((sc->avg_pwdb * 19 + pwdb) / 20); DPRINTFN(4, ("PWDB=%d EMA=%d\n", pwdb, sc->avg_pwdb)); } static int8_t rtwn_get_rssi(struct rtwn_softc *sc, int rate, void *physt) { static const int8_t cckoff[] = { 16, -12, -26, -46 }; struct r92c_rx_phystat *phy; struct r92c_rx_cck *cck; uint8_t rpt; int8_t rssi; if (rate <= 3) { cck = (struct r92c_rx_cck *)physt; if (sc->sc_flags & RTWN_FLAG_CCK_HIPWR) { rpt = (cck->agc_rpt >> 5) & 0x3; rssi = (cck->agc_rpt & 0x1f) << 1; } else { rpt = (cck->agc_rpt >> 6) & 0x3; rssi = cck->agc_rpt & 0x3e; } rssi = cckoff[rpt] - rssi; } else { /* OFDM/HT. */ phy = (struct r92c_rx_phystat *)physt; rssi = ((le32toh(phy->phydw1) >> 1) & 0x7f) - 110; } return (rssi); } static void rtwn_rx_frame(struct rtwn_softc *sc, struct r92c_rx_desc *rx_desc, struct rtwn_rx_data *rx_data, int desc_idx) { struct ieee80211com *ic = &sc->sc_ic; struct ieee80211_frame_min *wh; struct ieee80211_node *ni; struct r92c_rx_phystat *phy = NULL; uint32_t rxdw0, rxdw3; struct mbuf *m, *m1; bus_dma_segment_t segs[1]; bus_addr_t physaddr; uint8_t rate; int8_t rssi = 0, nf; int infosz, nsegs, pktlen, shift, error; rxdw0 = le32toh(rx_desc->rxdw0); rxdw3 = le32toh(rx_desc->rxdw3); if (__predict_false(rxdw0 & (R92C_RXDW0_CRCERR | R92C_RXDW0_ICVERR))) { /* * This should not happen since we setup our Rx filter * to not receive these frames. */ counter_u64_add(ic->ic_ierrors, 1); return; } pktlen = MS(rxdw0, R92C_RXDW0_PKTLEN); if (__predict_false(pktlen < sizeof(struct ieee80211_frame_ack) || pktlen > MCLBYTES)) { counter_u64_add(ic->ic_ierrors, 1); return; } rate = MS(rxdw3, R92C_RXDW3_RATE); infosz = MS(rxdw0, R92C_RXDW0_INFOSZ) * 8; if (infosz > sizeof(struct r92c_rx_phystat)) infosz = sizeof(struct r92c_rx_phystat); shift = MS(rxdw0, R92C_RXDW0_SHIFT); /* Get RSSI from PHY status descriptor if present. */ if (infosz != 0 && (rxdw0 & R92C_RXDW0_PHYST)) { phy = mtod(rx_data->m, struct r92c_rx_phystat *); rssi = rtwn_get_rssi(sc, rate, phy); /* Update our average RSSI. */ rtwn_update_avgrssi(sc, rate, rssi); } DPRINTFN(5, ("Rx frame len=%d rate=%d infosz=%d shift=%d rssi=%d\n", pktlen, rate, infosz, shift, rssi)); m1 = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); if (m1 == NULL) { counter_u64_add(ic->ic_ierrors, 1); return; } bus_dmamap_unload(sc->rx_ring.data_dmat, rx_data->map); error = bus_dmamap_load(sc->rx_ring.data_dmat, rx_data->map, mtod(m1, void *), MCLBYTES, rtwn_dma_map_addr, &physaddr, 0); if (error != 0) { m_freem(m1); if (bus_dmamap_load_mbuf_sg(sc->rx_ring.data_dmat, rx_data->map, rx_data->m, segs, &nsegs, 0)) panic("%s: could not load old RX mbuf", device_get_name(sc->sc_dev)); /* Physical address may have changed. */ rtwn_setup_rx_desc(sc, rx_desc, physaddr, MCLBYTES, desc_idx); counter_u64_add(ic->ic_ierrors, 1); return; } /* Finalize mbuf. */ m = rx_data->m; rx_data->m = m1; m->m_pkthdr.len = m->m_len = pktlen + infosz + shift; /* Update RX descriptor. */ rtwn_setup_rx_desc(sc, rx_desc, physaddr, MCLBYTES, desc_idx); /* Get ieee80211 frame header. */ if (rxdw0 & R92C_RXDW0_PHYST) m_adj(m, infosz + shift); else m_adj(m, shift); nf = -95; if (ieee80211_radiotap_active(ic)) { struct rtwn_rx_radiotap_header *tap = &sc->sc_rxtap; tap->wr_flags = 0; if (!(rxdw3 & R92C_RXDW3_HT)) { switch (rate) { /* CCK. */ case 0: tap->wr_rate = 2; break; case 1: tap->wr_rate = 4; break; case 2: tap->wr_rate = 11; break; case 3: tap->wr_rate = 22; break; /* OFDM. */ case 4: tap->wr_rate = 12; break; case 5: tap->wr_rate = 18; break; case 6: tap->wr_rate = 24; break; case 7: tap->wr_rate = 36; break; case 8: tap->wr_rate = 48; break; case 9: tap->wr_rate = 72; break; case 10: tap->wr_rate = 96; break; case 11: tap->wr_rate = 108; break; } } else if (rate >= 12) { /* MCS0~15. */ /* Bit 7 set means HT MCS instead of rate. */ tap->wr_rate = 0x80 | (rate - 12); } tap->wr_dbm_antsignal = rssi; tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq); tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags); } RTWN_UNLOCK(sc); wh = mtod(m, struct ieee80211_frame_min *); if (m->m_len >= sizeof(*wh)) ni = ieee80211_find_rxnode(ic, wh); else ni = NULL; /* Send the frame to the 802.11 layer. */ if (ni != NULL) { (void)ieee80211_input(ni, m, rssi - nf, nf); /* Node is no longer needed. */ ieee80211_free_node(ni); } else (void)ieee80211_input_all(ic, m, rssi - nf, nf); RTWN_LOCK(sc); } static int rtwn_tx(struct rtwn_softc *sc, struct mbuf *m, struct ieee80211_node *ni) { struct ieee80211com *ic = &sc->sc_ic; struct ieee80211vap *vap = ni->ni_vap; struct ieee80211_frame *wh; struct ieee80211_key *k = NULL; struct rtwn_tx_ring *tx_ring; struct rtwn_tx_data *data; struct r92c_tx_desc *txd; bus_dma_segment_t segs[1]; uint16_t qos; uint8_t raid, type, tid, qid; int nsegs, error; wh = mtod(m, struct ieee80211_frame *); type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; /* Encrypt the frame if need be. */ if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) { k = ieee80211_crypto_encap(ni, m); if (k == NULL) { m_freem(m); return (ENOBUFS); } /* 802.11 header may have moved. */ wh = mtod(m, struct ieee80211_frame *); } if (IEEE80211_QOS_HAS_SEQ(wh)) { qos = ((const struct ieee80211_qosframe *)wh)->i_qos[0]; tid = qos & IEEE80211_QOS_TID; } else { qos = 0; tid = 0; } switch (type) { case IEEE80211_FC0_TYPE_CTL: case IEEE80211_FC0_TYPE_MGT: qid = RTWN_VO_QUEUE; break; default: qid = M_WME_GETAC(m); break; } /* Grab a Tx buffer from the ring. */ tx_ring = &sc->tx_ring[qid]; data = &tx_ring->tx_data[tx_ring->cur]; if (data->m != NULL) { m_freem(m); return (ENOBUFS); } /* Fill Tx descriptor. */ txd = &tx_ring->desc[tx_ring->cur]; if (htole32(txd->txdw0) & R92C_RXDW0_OWN) { m_freem(m); return (ENOBUFS); } txd->txdw0 = htole32( SM(R92C_TXDW0_PKTLEN, m->m_pkthdr.len) | SM(R92C_TXDW0_OFFSET, sizeof(*txd)) | R92C_TXDW0_FSG | R92C_TXDW0_LSG); if (IEEE80211_IS_MULTICAST(wh->i_addr1)) txd->txdw0 |= htole32(R92C_TXDW0_BMCAST); txd->txdw1 = 0; txd->txdw4 = 0; txd->txdw5 = 0; /* XXX TODO: rate control; implement low-rate for EAPOL */ if (!IEEE80211_IS_MULTICAST(wh->i_addr1) && type == IEEE80211_FC0_TYPE_DATA) { if (ic->ic_curmode == IEEE80211_MODE_11B) raid = R92C_RAID_11B; else raid = R92C_RAID_11BG; txd->txdw1 |= htole32( SM(R92C_TXDW1_MACID, RTWN_MACID_BSS) | SM(R92C_TXDW1_QSEL, R92C_TXDW1_QSEL_BE) | SM(R92C_TXDW1_RAID, raid) | R92C_TXDW1_AGGBK); if (ic->ic_flags & IEEE80211_F_USEPROT) { if (ic->ic_protmode == IEEE80211_PROT_CTSONLY) { txd->txdw4 |= htole32(R92C_TXDW4_CTS2SELF | R92C_TXDW4_HWRTSEN); } else if (ic->ic_protmode == IEEE80211_PROT_RTSCTS) { txd->txdw4 |= htole32(R92C_TXDW4_RTSEN | R92C_TXDW4_HWRTSEN); } } /* XXX TODO: implement rate control */ /* Send RTS at OFDM24. */ txd->txdw4 |= htole32(SM(R92C_TXDW4_RTSRATE, 8)); txd->txdw5 |= htole32(SM(R92C_TXDW5_RTSRATE_FBLIMIT, 0xf)); /* Send data at OFDM54. */ txd->txdw5 |= htole32(SM(R92C_TXDW5_DATARATE, 11)); txd->txdw5 |= htole32(SM(R92C_TXDW5_DATARATE_FBLIMIT, 0x1f)); } else { txd->txdw1 |= htole32( SM(R92C_TXDW1_MACID, 0) | SM(R92C_TXDW1_QSEL, R92C_TXDW1_QSEL_MGNT) | SM(R92C_TXDW1_RAID, R92C_RAID_11B)); /* Force CCK1. */ txd->txdw4 |= htole32(R92C_TXDW4_DRVRATE); txd->txdw5 |= htole32(SM(R92C_TXDW5_DATARATE, 0)); } /* Set sequence number (already little endian). */ txd->txdseq = htole16(M_SEQNO_GET(m) % IEEE80211_SEQ_RANGE); if (!qos) { /* Use HW sequence numbering for non-QoS frames. */ txd->txdw4 |= htole32(R92C_TXDW4_HWSEQ); txd->txdseq |= htole16(0x8000); } else txd->txdw4 |= htole32(R92C_TXDW4_QOS); error = bus_dmamap_load_mbuf_sg(tx_ring->data_dmat, data->map, m, segs, &nsegs, BUS_DMA_NOWAIT); if (error != 0 && error != EFBIG) { device_printf(sc->sc_dev, "can't map mbuf (error %d)\n", error); m_freem(m); return (error); } if (error != 0) { struct mbuf *mnew; mnew = m_defrag(m, M_NOWAIT); if (mnew == NULL) { device_printf(sc->sc_dev, "can't defragment mbuf\n"); m_freem(m); return (ENOBUFS); } m = mnew; error = bus_dmamap_load_mbuf_sg(tx_ring->data_dmat, data->map, m, segs, &nsegs, BUS_DMA_NOWAIT); if (error != 0) { device_printf(sc->sc_dev, "can't map mbuf (error %d)\n", error); m_freem(m); return (error); } } txd->txbufaddr = htole32(segs[0].ds_addr); txd->txbufsize = htole16(m->m_pkthdr.len); bus_space_barrier(sc->sc_st, sc->sc_sh, 0, sc->sc_mapsize, BUS_SPACE_BARRIER_WRITE); txd->txdw0 |= htole32(R92C_TXDW0_OWN); bus_dmamap_sync(tx_ring->desc_dmat, tx_ring->desc_map, BUS_DMASYNC_POSTWRITE); bus_dmamap_sync(tx_ring->data_dmat, data->map, BUS_DMASYNC_POSTWRITE); data->m = m; data->ni = ni; if (ieee80211_radiotap_active_vap(vap)) { struct rtwn_tx_radiotap_header *tap = &sc->sc_txtap; tap->wt_flags = 0; tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); ieee80211_radiotap_tx(vap, m); } tx_ring->cur = (tx_ring->cur + 1) % RTWN_TX_LIST_COUNT; tx_ring->queued++; if (tx_ring->queued >= (RTWN_TX_LIST_COUNT - 1)) sc->qfullmsk |= (1 << qid); /* Kick TX. */ rtwn_write_2(sc, R92C_PCIE_CTRL_REG, (1 << qid)); return (0); } static void rtwn_tx_done(struct rtwn_softc *sc, int qid) { struct rtwn_tx_ring *tx_ring = &sc->tx_ring[qid]; struct rtwn_tx_data *tx_data; struct r92c_tx_desc *tx_desc; int i; bus_dmamap_sync(tx_ring->desc_dmat, tx_ring->desc_map, BUS_DMASYNC_POSTREAD); for (i = 0; i < RTWN_TX_LIST_COUNT; i++) { tx_data = &tx_ring->tx_data[i]; if (tx_data->m == NULL) continue; tx_desc = &tx_ring->desc[i]; if (le32toh(tx_desc->txdw0) & R92C_TXDW0_OWN) continue; bus_dmamap_unload(tx_ring->desc_dmat, tx_ring->desc_map); /* * XXX TODO: figure out whether the transmit succeeded or not. * .. and then notify rate control. */ ieee80211_tx_complete(tx_data->ni, tx_data->m, 0); tx_data->ni = NULL; tx_data->m = NULL; sc->sc_tx_timer = 0; tx_ring->queued--; } if (tx_ring->queued < (RTWN_TX_LIST_COUNT - 1)) sc->qfullmsk &= ~(1 << qid); rtwn_start(sc); } static int rtwn_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, const struct ieee80211_bpf_params *params) { struct ieee80211com *ic = ni->ni_ic; struct rtwn_softc *sc = ic->ic_softc; RTWN_LOCK(sc); /* Prevent management frames from being sent if we're not ready. */ if (!(sc->sc_flags & RTWN_RUNNING)) { RTWN_UNLOCK(sc); m_freem(m); return (ENETDOWN); } if (rtwn_tx(sc, m, ni) != 0) { m_freem(m); RTWN_UNLOCK(sc); return (EIO); } sc->sc_tx_timer = 5; RTWN_UNLOCK(sc); return (0); } static int rtwn_transmit(struct ieee80211com *ic, struct mbuf *m) { struct rtwn_softc *sc = ic->ic_softc; int error; RTWN_LOCK(sc); if ((sc->sc_flags & RTWN_RUNNING) == 0) { RTWN_UNLOCK(sc); return (ENXIO); } error = mbufq_enqueue(&sc->sc_snd, m); if (error) { RTWN_UNLOCK(sc); return (error); } rtwn_start(sc); RTWN_UNLOCK(sc); return (0); } static void rtwn_parent(struct ieee80211com *ic) { struct rtwn_softc *sc = ic->ic_softc; struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); if (ic->ic_nrunning > 0) { if (rtwn_init(sc) == 0) ieee80211_start_all(ic); else ieee80211_stop(vap); } else rtwn_stop(sc); } static void rtwn_start(struct rtwn_softc *sc) { struct ieee80211_node *ni; struct mbuf *m; RTWN_LOCK_ASSERT(sc); if ((sc->sc_flags & RTWN_RUNNING) == 0) return; while (sc->qfullmsk == 0 && (m = mbufq_dequeue(&sc->sc_snd)) != NULL) { ni = (struct ieee80211_node *)m->m_pkthdr.rcvif; if (rtwn_tx(sc, m, ni) != 0) { if_inc_counter(ni->ni_vap->iv_ifp, IFCOUNTER_OERRORS, 1); ieee80211_free_node(ni); continue; } sc->sc_tx_timer = 5; } } static void rtwn_watchdog(void *arg) { struct rtwn_softc *sc = arg; struct ieee80211com *ic = &sc->sc_ic; RTWN_LOCK_ASSERT(sc); KASSERT(sc->sc_flags & RTWN_RUNNING, ("not running")); if (sc->sc_tx_timer != 0 && --sc->sc_tx_timer == 0) { ic_printf(ic, "device timeout\n"); ieee80211_restart_all(ic); return; } callout_reset(&sc->watchdog_to, hz, rtwn_watchdog, sc); } static int rtwn_power_on(struct rtwn_softc *sc) { uint32_t reg; int ntries; /* Wait for autoload done bit. */ for (ntries = 0; ntries < 1000; ntries++) { if (rtwn_read_1(sc, R92C_APS_FSMCO) & R92C_APS_FSMCO_PFM_ALDN) break; DELAY(5); } if (ntries == 1000) { device_printf(sc->sc_dev, "timeout waiting for chip autoload\n"); return (ETIMEDOUT); } /* Unlock ISO/CLK/Power control register. */ rtwn_write_1(sc, R92C_RSV_CTRL, 0); /* TODO: check if we need this for 8188CE */ if (sc->board_type != R92C_BOARD_TYPE_DONGLE) { /* bt coex */ reg = rtwn_read_4(sc, R92C_APS_FSMCO); reg |= (R92C_APS_FSMCO_SOP_ABG | R92C_APS_FSMCO_SOP_AMB | R92C_APS_FSMCO_XOP_BTCK); rtwn_write_4(sc, R92C_APS_FSMCO, reg); } /* Move SPS into PWM mode. */ rtwn_write_1(sc, R92C_SPS0_CTRL, 0x2b); /* Set low byte to 0x0f, leave others unchanged. */ rtwn_write_4(sc, R92C_AFE_XTAL_CTRL, (rtwn_read_4(sc, R92C_AFE_XTAL_CTRL) & 0xffffff00) | 0x0f); /* TODO: check if we need this for 8188CE */ if (sc->board_type != R92C_BOARD_TYPE_DONGLE) { /* bt coex */ reg = rtwn_read_4(sc, R92C_AFE_XTAL_CTRL); reg &= (~0x00024800); /* XXX magic from linux */ rtwn_write_4(sc, R92C_AFE_XTAL_CTRL, reg); } rtwn_write_2(sc, R92C_SYS_ISO_CTRL, (rtwn_read_2(sc, R92C_SYS_ISO_CTRL) & 0xff) | R92C_SYS_ISO_CTRL_PWC_EV12V | R92C_SYS_ISO_CTRL_DIOR); DELAY(200); /* TODO: linux does additional btcoex stuff here */ /* Auto enable WLAN. */ rtwn_write_2(sc, R92C_APS_FSMCO, rtwn_read_2(sc, R92C_APS_FSMCO) | R92C_APS_FSMCO_APFM_ONMAC); for (ntries = 0; ntries < 1000; ntries++) { if (!(rtwn_read_2(sc, R92C_APS_FSMCO) & R92C_APS_FSMCO_APFM_ONMAC)) break; DELAY(5); } if (ntries == 1000) { device_printf(sc->sc_dev, "timeout waiting for MAC auto ON\n"); return (ETIMEDOUT); } /* Enable radio, GPIO and LED functions. */ rtwn_write_2(sc, R92C_APS_FSMCO, R92C_APS_FSMCO_AFSM_PCIE | R92C_APS_FSMCO_PDN_EN | R92C_APS_FSMCO_PFM_ALDN); /* Release RF digital isolation. */ rtwn_write_2(sc, R92C_SYS_ISO_CTRL, rtwn_read_2(sc, R92C_SYS_ISO_CTRL) & ~R92C_SYS_ISO_CTRL_DIOR); if (sc->chip & RTWN_CHIP_92C) rtwn_write_1(sc, R92C_PCIE_CTRL_REG + 3, 0x77); else rtwn_write_1(sc, R92C_PCIE_CTRL_REG + 3, 0x22); rtwn_write_4(sc, R92C_INT_MIG, 0); if (sc->board_type != R92C_BOARD_TYPE_DONGLE) { /* bt coex */ reg = rtwn_read_4(sc, R92C_AFE_XTAL_CTRL + 2); reg &= 0xfd; /* XXX magic from linux */ rtwn_write_4(sc, R92C_AFE_XTAL_CTRL + 2, reg); } rtwn_write_1(sc, R92C_GPIO_MUXCFG, rtwn_read_1(sc, R92C_GPIO_MUXCFG) & ~R92C_GPIO_MUXCFG_RFKILL); reg = rtwn_read_1(sc, R92C_GPIO_IO_SEL); if (!(reg & R92C_GPIO_IO_SEL_RFKILL)) { device_printf(sc->sc_dev, "radio is disabled by hardware switch\n"); return (EPERM); } /* Initialize MAC. */ reg = rtwn_read_1(sc, R92C_APSD_CTRL); rtwn_write_1(sc, R92C_APSD_CTRL, rtwn_read_1(sc, R92C_APSD_CTRL) & ~R92C_APSD_CTRL_OFF); for (ntries = 0; ntries < 200; ntries++) { if (!(rtwn_read_1(sc, R92C_APSD_CTRL) & R92C_APSD_CTRL_OFF_STATUS)) break; DELAY(500); } if (ntries == 200) { device_printf(sc->sc_dev, "timeout waiting for MAC initialization\n"); return (ETIMEDOUT); } /* Enable MAC DMA/WMAC/SCHEDULE/SEC blocks. */ reg = rtwn_read_2(sc, R92C_CR); reg |= R92C_CR_HCI_TXDMA_EN | R92C_CR_HCI_RXDMA_EN | R92C_CR_TXDMA_EN | R92C_CR_RXDMA_EN | R92C_CR_PROTOCOL_EN | R92C_CR_SCHEDULE_EN | R92C_CR_MACTXEN | R92C_CR_MACRXEN | R92C_CR_ENSEC; rtwn_write_2(sc, R92C_CR, reg); rtwn_write_1(sc, 0xfe10, 0x19); return (0); } static int rtwn_llt_init(struct rtwn_softc *sc) { int i, error; /* Reserve pages [0; R92C_TX_PAGE_COUNT]. */ for (i = 0; i < R92C_TX_PAGE_COUNT; i++) { if ((error = rtwn_llt_write(sc, i, i + 1)) != 0) return (error); } /* NB: 0xff indicates end-of-list. */ if ((error = rtwn_llt_write(sc, i, 0xff)) != 0) return (error); /* * Use pages [R92C_TX_PAGE_COUNT + 1; R92C_TXPKTBUF_COUNT - 1] * as ring buffer. */ for (++i; i < R92C_TXPKTBUF_COUNT - 1; i++) { if ((error = rtwn_llt_write(sc, i, i + 1)) != 0) return (error); } /* Make the last page point to the beginning of the ring buffer. */ error = rtwn_llt_write(sc, i, R92C_TX_PAGE_COUNT + 1); return (error); } static void rtwn_fw_reset(struct rtwn_softc *sc) { uint16_t reg; int ntries; /* Tell 8051 to reset itself. */ rtwn_write_1(sc, R92C_HMETFR + 3, 0x20); /* Wait until 8051 resets by itself. */ for (ntries = 0; ntries < 100; ntries++) { reg = rtwn_read_2(sc, R92C_SYS_FUNC_EN); if (!(reg & R92C_SYS_FUNC_EN_CPUEN)) goto sleep; DELAY(50); } /* Force 8051 reset. */ rtwn_write_2(sc, R92C_SYS_FUNC_EN, reg & ~R92C_SYS_FUNC_EN_CPUEN); sleep: /* * We must sleep for one second to let the firmware settle. * Accessing registers too early will hang the whole system. */ if (msleep(®, &sc->sc_mtx, 0, "rtwnrst", hz)) { device_printf(sc->sc_dev, "timeout waiting for firmware " "initialization to complete\n"); } } static void rtwn_fw_loadpage(struct rtwn_softc *sc, int page, const uint8_t *buf, int len) { uint32_t reg; int off, mlen, i; reg = rtwn_read_4(sc, R92C_MCUFWDL); reg = RW(reg, R92C_MCUFWDL_PAGE, page); rtwn_write_4(sc, R92C_MCUFWDL, reg); DELAY(5); off = R92C_FW_START_ADDR; while (len > 0) { if (len > 196) mlen = 196; else if (len > 4) mlen = 4; else mlen = 1; for (i = 0; i < mlen; i++) rtwn_write_1(sc, off++, buf[i]); buf += mlen; len -= mlen; } } static int rtwn_load_firmware(struct rtwn_softc *sc) { const struct firmware *fw; const struct r92c_fw_hdr *hdr; const char *name; const u_char *ptr; size_t len; uint32_t reg; int mlen, ntries, page, error = 0; /* Read firmware image from the filesystem. */ if ((sc->chip & (RTWN_CHIP_UMC_A_CUT | RTWN_CHIP_92C)) == RTWN_CHIP_UMC_A_CUT) name = "rtwn-rtl8192cfwU"; else name = "rtwn-rtl8192cfwU_B"; RTWN_UNLOCK(sc); fw = firmware_get(name); RTWN_LOCK(sc); if (fw == NULL) { device_printf(sc->sc_dev, "could not read firmware %s\n", name); return (ENOENT); } len = fw->datasize; if (len < sizeof(*hdr)) { device_printf(sc->sc_dev, "firmware too short\n"); error = EINVAL; goto fail; } ptr = fw->data; hdr = (const struct r92c_fw_hdr *)ptr; /* Check if there is a valid FW header and skip it. */ if ((le16toh(hdr->signature) >> 4) == 0x88c || (le16toh(hdr->signature) >> 4) == 0x92c) { DPRINTF(("FW V%d.%d %02d-%02d %02d:%02d\n", le16toh(hdr->version), le16toh(hdr->subversion), hdr->month, hdr->date, hdr->hour, hdr->minute)); ptr += sizeof(*hdr); len -= sizeof(*hdr); } if (rtwn_read_1(sc, R92C_MCUFWDL) & R92C_MCUFWDL_RAM_DL_SEL) rtwn_fw_reset(sc); /* Enable FW download. */ rtwn_write_2(sc, R92C_SYS_FUNC_EN, rtwn_read_2(sc, R92C_SYS_FUNC_EN) | R92C_SYS_FUNC_EN_CPUEN); rtwn_write_1(sc, R92C_MCUFWDL, rtwn_read_1(sc, R92C_MCUFWDL) | R92C_MCUFWDL_EN); rtwn_write_1(sc, R92C_MCUFWDL + 2, rtwn_read_1(sc, R92C_MCUFWDL + 2) & ~0x08); /* Reset the FWDL checksum. */ rtwn_write_1(sc, R92C_MCUFWDL, rtwn_read_1(sc, R92C_MCUFWDL) | R92C_MCUFWDL_CHKSUM_RPT); for (page = 0; len > 0; page++) { mlen = MIN(len, R92C_FW_PAGE_SIZE); rtwn_fw_loadpage(sc, page, ptr, mlen); ptr += mlen; len -= mlen; } /* Disable FW download. */ rtwn_write_1(sc, R92C_MCUFWDL, rtwn_read_1(sc, R92C_MCUFWDL) & ~R92C_MCUFWDL_EN); rtwn_write_1(sc, R92C_MCUFWDL + 1, 0); /* Wait for checksum report. */ for (ntries = 0; ntries < 1000; ntries++) { if (rtwn_read_4(sc, R92C_MCUFWDL) & R92C_MCUFWDL_CHKSUM_RPT) break; DELAY(5); } if (ntries == 1000) { device_printf(sc->sc_dev, "timeout waiting for checksum report\n"); error = ETIMEDOUT; goto fail; } reg = rtwn_read_4(sc, R92C_MCUFWDL); reg = (reg & ~R92C_MCUFWDL_WINTINI_RDY) | R92C_MCUFWDL_RDY; rtwn_write_4(sc, R92C_MCUFWDL, reg); /* Wait for firmware readiness. */ for (ntries = 0; ntries < 2000; ntries++) { if (rtwn_read_4(sc, R92C_MCUFWDL) & R92C_MCUFWDL_WINTINI_RDY) break; DELAY(50); } if (ntries == 1000) { device_printf(sc->sc_dev, "timeout waiting for firmware readiness\n"); error = ETIMEDOUT; goto fail; } fail: firmware_put(fw, FIRMWARE_UNLOAD); return (error); } static int rtwn_dma_init(struct rtwn_softc *sc) { uint32_t reg; int error; /* Initialize LLT table. */ error = rtwn_llt_init(sc); if (error != 0) return error; /* Set number of pages for normal priority queue. */ rtwn_write_2(sc, R92C_RQPN_NPQ, 0); rtwn_write_4(sc, R92C_RQPN, /* Set number of pages for public queue. */ SM(R92C_RQPN_PUBQ, R92C_PUBQ_NPAGES) | /* Set number of pages for high priority queue. */ SM(R92C_RQPN_HPQ, R92C_HPQ_NPAGES) | /* Set number of pages for low priority queue. */ SM(R92C_RQPN_LPQ, R92C_LPQ_NPAGES) | /* Load values. */ R92C_RQPN_LD); rtwn_write_1(sc, R92C_TXPKTBUF_BCNQ_BDNY, R92C_TX_PAGE_BOUNDARY); rtwn_write_1(sc, R92C_TXPKTBUF_MGQ_BDNY, R92C_TX_PAGE_BOUNDARY); rtwn_write_1(sc, R92C_TXPKTBUF_WMAC_LBK_BF_HD, R92C_TX_PAGE_BOUNDARY); rtwn_write_1(sc, R92C_TRXFF_BNDY, R92C_TX_PAGE_BOUNDARY); rtwn_write_1(sc, R92C_TDECTRL + 1, R92C_TX_PAGE_BOUNDARY); reg = rtwn_read_2(sc, R92C_TRXDMA_CTRL); reg &= ~R92C_TRXDMA_CTRL_QMAP_M; reg |= 0xF771; rtwn_write_2(sc, R92C_TRXDMA_CTRL, reg); rtwn_write_4(sc, R92C_TCR, R92C_TCR_CFENDFORM | (1 << 12) | (1 << 13)); /* Configure Tx DMA. */ rtwn_write_4(sc, R92C_BKQ_DESA, sc->tx_ring[RTWN_BK_QUEUE].paddr); rtwn_write_4(sc, R92C_BEQ_DESA, sc->tx_ring[RTWN_BE_QUEUE].paddr); rtwn_write_4(sc, R92C_VIQ_DESA, sc->tx_ring[RTWN_VI_QUEUE].paddr); rtwn_write_4(sc, R92C_VOQ_DESA, sc->tx_ring[RTWN_VO_QUEUE].paddr); rtwn_write_4(sc, R92C_BCNQ_DESA, sc->tx_ring[RTWN_BEACON_QUEUE].paddr); rtwn_write_4(sc, R92C_MGQ_DESA, sc->tx_ring[RTWN_MGNT_QUEUE].paddr); rtwn_write_4(sc, R92C_HQ_DESA, sc->tx_ring[RTWN_HIGH_QUEUE].paddr); /* Configure Rx DMA. */ rtwn_write_4(sc, R92C_RX_DESA, sc->rx_ring.paddr); /* Set Tx/Rx transfer page boundary. */ rtwn_write_2(sc, R92C_TRXFF_BNDY + 2, 0x27ff); /* Set Tx/Rx transfer page size. */ rtwn_write_1(sc, R92C_PBP, SM(R92C_PBP_PSRX, R92C_PBP_128) | SM(R92C_PBP_PSTX, R92C_PBP_128)); return (0); } static void rtwn_mac_init(struct rtwn_softc *sc) { int i; /* Write MAC initialization values. */ for (i = 0; i < nitems(rtl8192ce_mac); i++) rtwn_write_1(sc, rtl8192ce_mac[i].reg, rtl8192ce_mac[i].val); } static void rtwn_bb_init(struct rtwn_softc *sc) { const struct rtwn_bb_prog *prog; uint32_t reg; int i; /* Enable BB and RF. */ rtwn_write_2(sc, R92C_SYS_FUNC_EN, rtwn_read_2(sc, R92C_SYS_FUNC_EN) | R92C_SYS_FUNC_EN_BBRSTB | R92C_SYS_FUNC_EN_BB_GLB_RST | R92C_SYS_FUNC_EN_DIO_RF); rtwn_write_2(sc, R92C_AFE_PLL_CTRL, 0xdb83); rtwn_write_1(sc, R92C_RF_CTRL, R92C_RF_CTRL_EN | R92C_RF_CTRL_RSTB | R92C_RF_CTRL_SDMRSTB); rtwn_write_1(sc, R92C_SYS_FUNC_EN, R92C_SYS_FUNC_EN_DIO_PCIE | R92C_SYS_FUNC_EN_PCIEA | R92C_SYS_FUNC_EN_PPLL | R92C_SYS_FUNC_EN_BB_GLB_RST | R92C_SYS_FUNC_EN_BBRSTB); rtwn_write_1(sc, R92C_AFE_XTAL_CTRL + 1, 0x80); rtwn_write_4(sc, R92C_LEDCFG0, rtwn_read_4(sc, R92C_LEDCFG0) | 0x00800000); /* Select BB programming. */ prog = (sc->chip & RTWN_CHIP_92C) ? &rtl8192ce_bb_prog_2t : &rtl8192ce_bb_prog_1t; /* Write BB initialization values. */ for (i = 0; i < prog->count; i++) { rtwn_bb_write(sc, prog->regs[i], prog->vals[i]); DELAY(1); } if (sc->chip & RTWN_CHIP_92C_1T2R) { /* 8192C 1T only configuration. */ reg = rtwn_bb_read(sc, R92C_FPGA0_TXINFO); reg = (reg & ~0x00000003) | 0x2; rtwn_bb_write(sc, R92C_FPGA0_TXINFO, reg); reg = rtwn_bb_read(sc, R92C_FPGA1_TXINFO); reg = (reg & ~0x00300033) | 0x00200022; rtwn_bb_write(sc, R92C_FPGA1_TXINFO, reg); reg = rtwn_bb_read(sc, R92C_CCK0_AFESETTING); reg = (reg & ~0xff000000) | 0x45 << 24; rtwn_bb_write(sc, R92C_CCK0_AFESETTING, reg); reg = rtwn_bb_read(sc, R92C_OFDM0_TRXPATHENA); reg = (reg & ~0x000000ff) | 0x23; rtwn_bb_write(sc, R92C_OFDM0_TRXPATHENA, reg); reg = rtwn_bb_read(sc, R92C_OFDM0_AGCPARAM1); reg = (reg & ~0x00000030) | 1 << 4; rtwn_bb_write(sc, R92C_OFDM0_AGCPARAM1, reg); reg = rtwn_bb_read(sc, 0xe74); reg = (reg & ~0x0c000000) | 2 << 26; rtwn_bb_write(sc, 0xe74, reg); reg = rtwn_bb_read(sc, 0xe78); reg = (reg & ~0x0c000000) | 2 << 26; rtwn_bb_write(sc, 0xe78, reg); reg = rtwn_bb_read(sc, 0xe7c); reg = (reg & ~0x0c000000) | 2 << 26; rtwn_bb_write(sc, 0xe7c, reg); reg = rtwn_bb_read(sc, 0xe80); reg = (reg & ~0x0c000000) | 2 << 26; rtwn_bb_write(sc, 0xe80, reg); reg = rtwn_bb_read(sc, 0xe88); reg = (reg & ~0x0c000000) | 2 << 26; rtwn_bb_write(sc, 0xe88, reg); } /* Write AGC values. */ for (i = 0; i < prog->agccount; i++) { rtwn_bb_write(sc, R92C_OFDM0_AGCRSSITABLE, prog->agcvals[i]); DELAY(1); } if (rtwn_bb_read(sc, R92C_HSSI_PARAM2(0)) & R92C_HSSI_PARAM2_CCK_HIPWR) sc->sc_flags |= RTWN_FLAG_CCK_HIPWR; } static void rtwn_rf_init(struct rtwn_softc *sc) { const struct rtwn_rf_prog *prog; uint32_t reg, type; int i, j, idx, off; /* Select RF programming based on board type. */ if (!(sc->chip & RTWN_CHIP_92C)) { if (sc->board_type == R92C_BOARD_TYPE_MINICARD) prog = rtl8188ce_rf_prog; else if (sc->board_type == R92C_BOARD_TYPE_HIGHPA) prog = rtl8188ru_rf_prog; else prog = rtl8188cu_rf_prog; } else prog = rtl8192ce_rf_prog; for (i = 0; i < sc->nrxchains; i++) { /* Save RF_ENV control type. */ idx = i / 2; off = (i % 2) * 16; reg = rtwn_bb_read(sc, R92C_FPGA0_RFIFACESW(idx)); type = (reg >> off) & 0x10; /* Set RF_ENV enable. */ reg = rtwn_bb_read(sc, R92C_FPGA0_RFIFACEOE(i)); reg |= 0x100000; rtwn_bb_write(sc, R92C_FPGA0_RFIFACEOE(i), reg); DELAY(1); /* Set RF_ENV output high. */ reg = rtwn_bb_read(sc, R92C_FPGA0_RFIFACEOE(i)); reg |= 0x10; rtwn_bb_write(sc, R92C_FPGA0_RFIFACEOE(i), reg); DELAY(1); /* Set address and data lengths of RF registers. */ reg = rtwn_bb_read(sc, R92C_HSSI_PARAM2(i)); reg &= ~R92C_HSSI_PARAM2_ADDR_LENGTH; rtwn_bb_write(sc, R92C_HSSI_PARAM2(i), reg); DELAY(1); reg = rtwn_bb_read(sc, R92C_HSSI_PARAM2(i)); reg &= ~R92C_HSSI_PARAM2_DATA_LENGTH; rtwn_bb_write(sc, R92C_HSSI_PARAM2(i), reg); DELAY(1); /* Write RF initialization values for this chain. */ for (j = 0; j < prog[i].count; j++) { if (prog[i].regs[j] >= 0xf9 && prog[i].regs[j] <= 0xfe) { /* * These are fake RF registers offsets that * indicate a delay is required. */ DELAY(50); continue; } rtwn_rf_write(sc, i, prog[i].regs[j], prog[i].vals[j]); DELAY(1); } /* Restore RF_ENV control type. */ reg = rtwn_bb_read(sc, R92C_FPGA0_RFIFACESW(idx)); reg &= ~(0x10 << off) | (type << off); rtwn_bb_write(sc, R92C_FPGA0_RFIFACESW(idx), reg); /* Cache RF register CHNLBW. */ sc->rf_chnlbw[i] = rtwn_rf_read(sc, i, R92C_RF_CHNLBW); } if ((sc->chip & (RTWN_CHIP_UMC_A_CUT | RTWN_CHIP_92C)) == RTWN_CHIP_UMC_A_CUT) { rtwn_rf_write(sc, 0, R92C_RF_RX_G1, 0x30255); rtwn_rf_write(sc, 0, R92C_RF_RX_G2, 0x50a00); } } static void rtwn_cam_init(struct rtwn_softc *sc) { /* Invalidate all CAM entries. */ rtwn_write_4(sc, R92C_CAMCMD, R92C_CAMCMD_POLLING | R92C_CAMCMD_CLR); } static void rtwn_pa_bias_init(struct rtwn_softc *sc) { uint8_t reg; int i; for (i = 0; i < sc->nrxchains; i++) { if (sc->pa_setting & (1 << i)) continue; rtwn_rf_write(sc, i, R92C_RF_IPA, 0x0f406); rtwn_rf_write(sc, i, R92C_RF_IPA, 0x4f406); rtwn_rf_write(sc, i, R92C_RF_IPA, 0x8f406); rtwn_rf_write(sc, i, R92C_RF_IPA, 0xcf406); } if (!(sc->pa_setting & 0x10)) { reg = rtwn_read_1(sc, 0x16); reg = (reg & ~0xf0) | 0x90; rtwn_write_1(sc, 0x16, reg); } } static void rtwn_rxfilter_init(struct rtwn_softc *sc) { /* Initialize Rx filter. */ /* TODO: use better filter for monitor mode. */ rtwn_write_4(sc, R92C_RCR, R92C_RCR_AAP | R92C_RCR_APM | R92C_RCR_AM | R92C_RCR_AB | R92C_RCR_APP_ICV | R92C_RCR_AMF | R92C_RCR_HTC_LOC_CTRL | R92C_RCR_APP_MIC | R92C_RCR_APP_PHYSTS); /* Accept all multicast frames. */ rtwn_write_4(sc, R92C_MAR + 0, 0xffffffff); rtwn_write_4(sc, R92C_MAR + 4, 0xffffffff); /* Accept all management frames. */ rtwn_write_2(sc, R92C_RXFLTMAP0, 0xffff); /* Reject all control frames. */ rtwn_write_2(sc, R92C_RXFLTMAP1, 0x0000); /* Accept all data frames. */ rtwn_write_2(sc, R92C_RXFLTMAP2, 0xffff); } static void rtwn_edca_init(struct rtwn_softc *sc) { rtwn_write_2(sc, R92C_SPEC_SIFS, 0x1010); rtwn_write_2(sc, R92C_MAC_SPEC_SIFS, 0x1010); rtwn_write_2(sc, R92C_SIFS_CCK, 0x1010); rtwn_write_2(sc, R92C_SIFS_OFDM, 0x0e0e); rtwn_write_4(sc, R92C_EDCA_BE_PARAM, 0x005ea42b); rtwn_write_4(sc, R92C_EDCA_BK_PARAM, 0x0000a44f); rtwn_write_4(sc, R92C_EDCA_VI_PARAM, 0x005e4322); rtwn_write_4(sc, R92C_EDCA_VO_PARAM, 0x002f3222); } static void rtwn_write_txpower(struct rtwn_softc *sc, int chain, uint16_t power[RTWN_RIDX_COUNT]) { uint32_t reg; /* Write per-CCK rate Tx power. */ if (chain == 0) { reg = rtwn_bb_read(sc, R92C_TXAGC_A_CCK1_MCS32); reg = RW(reg, R92C_TXAGC_A_CCK1, power[0]); rtwn_bb_write(sc, R92C_TXAGC_A_CCK1_MCS32, reg); reg = rtwn_bb_read(sc, R92C_TXAGC_B_CCK11_A_CCK2_11); reg = RW(reg, R92C_TXAGC_A_CCK2, power[1]); reg = RW(reg, R92C_TXAGC_A_CCK55, power[2]); reg = RW(reg, R92C_TXAGC_A_CCK11, power[3]); rtwn_bb_write(sc, R92C_TXAGC_B_CCK11_A_CCK2_11, reg); } else { reg = rtwn_bb_read(sc, R92C_TXAGC_B_CCK1_55_MCS32); reg = RW(reg, R92C_TXAGC_B_CCK1, power[0]); reg = RW(reg, R92C_TXAGC_B_CCK2, power[1]); reg = RW(reg, R92C_TXAGC_B_CCK55, power[2]); rtwn_bb_write(sc, R92C_TXAGC_B_CCK1_55_MCS32, reg); reg = rtwn_bb_read(sc, R92C_TXAGC_B_CCK11_A_CCK2_11); reg = RW(reg, R92C_TXAGC_B_CCK11, power[3]); rtwn_bb_write(sc, R92C_TXAGC_B_CCK11_A_CCK2_11, reg); } /* Write per-OFDM rate Tx power. */ rtwn_bb_write(sc, R92C_TXAGC_RATE18_06(chain), SM(R92C_TXAGC_RATE06, power[ 4]) | SM(R92C_TXAGC_RATE09, power[ 5]) | SM(R92C_TXAGC_RATE12, power[ 6]) | SM(R92C_TXAGC_RATE18, power[ 7])); rtwn_bb_write(sc, R92C_TXAGC_RATE54_24(chain), SM(R92C_TXAGC_RATE24, power[ 8]) | SM(R92C_TXAGC_RATE36, power[ 9]) | SM(R92C_TXAGC_RATE48, power[10]) | SM(R92C_TXAGC_RATE54, power[11])); /* Write per-MCS Tx power. */ rtwn_bb_write(sc, R92C_TXAGC_MCS03_MCS00(chain), SM(R92C_TXAGC_MCS00, power[12]) | SM(R92C_TXAGC_MCS01, power[13]) | SM(R92C_TXAGC_MCS02, power[14]) | SM(R92C_TXAGC_MCS03, power[15])); rtwn_bb_write(sc, R92C_TXAGC_MCS07_MCS04(chain), SM(R92C_TXAGC_MCS04, power[16]) | SM(R92C_TXAGC_MCS05, power[17]) | SM(R92C_TXAGC_MCS06, power[18]) | SM(R92C_TXAGC_MCS07, power[19])); rtwn_bb_write(sc, R92C_TXAGC_MCS11_MCS08(chain), SM(R92C_TXAGC_MCS08, power[20]) | SM(R92C_TXAGC_MCS09, power[21]) | SM(R92C_TXAGC_MCS10, power[22]) | SM(R92C_TXAGC_MCS11, power[23])); rtwn_bb_write(sc, R92C_TXAGC_MCS15_MCS12(chain), SM(R92C_TXAGC_MCS12, power[24]) | SM(R92C_TXAGC_MCS13, power[25]) | SM(R92C_TXAGC_MCS14, power[26]) | SM(R92C_TXAGC_MCS15, power[27])); } static void rtwn_get_txpower(struct rtwn_softc *sc, int chain, struct ieee80211_channel *c, struct ieee80211_channel *extc, uint16_t power[RTWN_RIDX_COUNT]) { struct ieee80211com *ic = &sc->sc_ic; struct r92c_rom *rom = &sc->rom; uint16_t cckpow, ofdmpow, htpow, diff, max; const struct rtwn_txpwr *base; int ridx, chan, group; /* Determine channel group. */ chan = ieee80211_chan2ieee(ic, c); /* XXX center freq! */ if (chan <= 3) group = 0; else if (chan <= 9) group = 1; else group = 2; /* Get original Tx power based on board type and RF chain. */ if (!(sc->chip & RTWN_CHIP_92C)) { if (sc->board_type == R92C_BOARD_TYPE_HIGHPA) base = &rtl8188ru_txagc[chain]; else base = &rtl8192cu_txagc[chain]; } else base = &rtl8192cu_txagc[chain]; memset(power, 0, RTWN_RIDX_COUNT * sizeof(power[0])); if (sc->regulatory == 0) { for (ridx = 0; ridx <= 3; ridx++) power[ridx] = base->pwr[0][ridx]; } for (ridx = 4; ridx < RTWN_RIDX_COUNT; ridx++) { if (sc->regulatory == 3) { power[ridx] = base->pwr[0][ridx]; /* Apply vendor limits. */ if (extc != NULL) max = rom->ht40_max_pwr[group]; else max = rom->ht20_max_pwr[group]; max = (max >> (chain * 4)) & 0xf; if (power[ridx] > max) power[ridx] = max; } else if (sc->regulatory == 1) { if (extc == NULL) power[ridx] = base->pwr[group][ridx]; } else if (sc->regulatory != 2) power[ridx] = base->pwr[0][ridx]; } /* Compute per-CCK rate Tx power. */ cckpow = rom->cck_tx_pwr[chain][group]; for (ridx = 0; ridx <= 3; ridx++) { power[ridx] += cckpow; if (power[ridx] > R92C_MAX_TX_PWR) power[ridx] = R92C_MAX_TX_PWR; } htpow = rom->ht40_1s_tx_pwr[chain][group]; if (sc->ntxchains > 1) { /* Apply reduction for 2 spatial streams. */ diff = rom->ht40_2s_tx_pwr_diff[group]; diff = (diff >> (chain * 4)) & 0xf; htpow = (htpow > diff) ? htpow - diff : 0; } /* Compute per-OFDM rate Tx power. */ diff = rom->ofdm_tx_pwr_diff[group]; diff = (diff >> (chain * 4)) & 0xf; ofdmpow = htpow + diff; /* HT->OFDM correction. */ for (ridx = 4; ridx <= 11; ridx++) { power[ridx] += ofdmpow; if (power[ridx] > R92C_MAX_TX_PWR) power[ridx] = R92C_MAX_TX_PWR; } /* Compute per-MCS Tx power. */ if (extc == NULL) { diff = rom->ht20_tx_pwr_diff[group]; diff = (diff >> (chain * 4)) & 0xf; htpow += diff; /* HT40->HT20 correction. */ } for (ridx = 12; ridx <= 27; ridx++) { power[ridx] += htpow; if (power[ridx] > R92C_MAX_TX_PWR) power[ridx] = R92C_MAX_TX_PWR; } #ifdef RTWN_DEBUG if (sc->sc_debug >= 4) { /* Dump per-rate Tx power values. */ printf("Tx power for chain %d:\n", chain); for (ridx = 0; ridx < RTWN_RIDX_COUNT; ridx++) printf("Rate %d = %u\n", ridx, power[ridx]); } #endif } static void rtwn_set_txpower(struct rtwn_softc *sc, struct ieee80211_channel *c, struct ieee80211_channel *extc) { uint16_t power[RTWN_RIDX_COUNT]; int i; for (i = 0; i < sc->ntxchains; i++) { /* Compute per-rate Tx power values. */ rtwn_get_txpower(sc, i, c, extc, power); /* Write per-rate Tx power values to hardware. */ rtwn_write_txpower(sc, i, power); } } static void rtwn_set_rx_bssid_all(struct rtwn_softc *sc, int enable) { uint32_t reg; reg = rtwn_read_4(sc, R92C_RCR); if (enable) reg &= ~R92C_RCR_CBSSID_BCN; else reg |= R92C_RCR_CBSSID_BCN; rtwn_write_4(sc, R92C_RCR, reg); } static void rtwn_set_gain(struct rtwn_softc *sc, uint8_t gain) { uint32_t reg; reg = rtwn_bb_read(sc, R92C_OFDM0_AGCCORE1(0)); reg = RW(reg, R92C_OFDM0_AGCCORE1_GAIN, gain); rtwn_bb_write(sc, R92C_OFDM0_AGCCORE1(0), reg); reg = rtwn_bb_read(sc, R92C_OFDM0_AGCCORE1(1)); reg = RW(reg, R92C_OFDM0_AGCCORE1_GAIN, gain); rtwn_bb_write(sc, R92C_OFDM0_AGCCORE1(1), reg); } static void rtwn_scan_start(struct ieee80211com *ic) { struct rtwn_softc *sc = ic->ic_softc; RTWN_LOCK(sc); /* Receive beacons / probe responses from any BSSID. */ rtwn_set_rx_bssid_all(sc, 1); /* Set gain for scanning. */ rtwn_set_gain(sc, 0x20); RTWN_UNLOCK(sc); } static void rtwn_scan_end(struct ieee80211com *ic) { struct rtwn_softc *sc = ic->ic_softc; RTWN_LOCK(sc); /* Restore limitations. */ rtwn_set_rx_bssid_all(sc, 0); /* Set gain under link. */ rtwn_set_gain(sc, 0x32); RTWN_UNLOCK(sc); } static void rtwn_set_channel(struct ieee80211com *ic) { struct rtwn_softc *sc = ic->ic_softc; struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); RTWN_LOCK(sc); if (vap->iv_state == IEEE80211_S_SCAN) { /* Make link LED blink during scan. */ rtwn_set_led(sc, RTWN_LED_LINK, !sc->ledlink); } rtwn_set_chan(sc, ic->ic_curchan, NULL); RTWN_UNLOCK(sc); } static void rtwn_update_mcast(struct ieee80211com *ic) { /* XXX do nothing? */ } static void rtwn_set_chan(struct rtwn_softc *sc, struct ieee80211_channel *c, struct ieee80211_channel *extc) { struct ieee80211com *ic = &sc->sc_ic; u_int chan; int i; chan = ieee80211_chan2ieee(ic, c); /* XXX center freq! */ if (chan == 0 || chan == IEEE80211_CHAN_ANY) { device_printf(sc->sc_dev, "%s: invalid channel %x\n", __func__, chan); return; } /* Set Tx power for this new channel. */ rtwn_set_txpower(sc, c, extc); for (i = 0; i < sc->nrxchains; i++) { rtwn_rf_write(sc, i, R92C_RF_CHNLBW, RW(sc->rf_chnlbw[i], R92C_RF_CHNLBW_CHNL, chan)); } #ifndef IEEE80211_NO_HT if (extc != NULL) { uint32_t reg; /* Is secondary channel below or above primary? */ int prichlo = c->ic_freq < extc->ic_freq; rtwn_write_1(sc, R92C_BWOPMODE, rtwn_read_1(sc, R92C_BWOPMODE) & ~R92C_BWOPMODE_20MHZ); reg = rtwn_read_1(sc, R92C_RRSR + 2); reg = (reg & ~0x6f) | (prichlo ? 1 : 2) << 5; rtwn_write_1(sc, R92C_RRSR + 2, reg); rtwn_bb_write(sc, R92C_FPGA0_RFMOD, rtwn_bb_read(sc, R92C_FPGA0_RFMOD) | R92C_RFMOD_40MHZ); rtwn_bb_write(sc, R92C_FPGA1_RFMOD, rtwn_bb_read(sc, R92C_FPGA1_RFMOD) | R92C_RFMOD_40MHZ); /* Set CCK side band. */ reg = rtwn_bb_read(sc, R92C_CCK0_SYSTEM); reg = (reg & ~0x00000010) | (prichlo ? 0 : 1) << 4; rtwn_bb_write(sc, R92C_CCK0_SYSTEM, reg); reg = rtwn_bb_read(sc, R92C_OFDM1_LSTF); reg = (reg & ~0x00000c00) | (prichlo ? 1 : 2) << 10; rtwn_bb_write(sc, R92C_OFDM1_LSTF, reg); rtwn_bb_write(sc, R92C_FPGA0_ANAPARAM2, rtwn_bb_read(sc, R92C_FPGA0_ANAPARAM2) & ~R92C_FPGA0_ANAPARAM2_CBW20); reg = rtwn_bb_read(sc, 0x818); reg = (reg & ~0x0c000000) | (prichlo ? 2 : 1) << 26; rtwn_bb_write(sc, 0x818, reg); /* Select 40MHz bandwidth. */ rtwn_rf_write(sc, 0, R92C_RF_CHNLBW, (sc->rf_chnlbw[0] & ~0xfff) | chan); } else #endif { rtwn_write_1(sc, R92C_BWOPMODE, rtwn_read_1(sc, R92C_BWOPMODE) | R92C_BWOPMODE_20MHZ); rtwn_bb_write(sc, R92C_FPGA0_RFMOD, rtwn_bb_read(sc, R92C_FPGA0_RFMOD) & ~R92C_RFMOD_40MHZ); rtwn_bb_write(sc, R92C_FPGA1_RFMOD, rtwn_bb_read(sc, R92C_FPGA1_RFMOD) & ~R92C_RFMOD_40MHZ); rtwn_bb_write(sc, R92C_FPGA0_ANAPARAM2, rtwn_bb_read(sc, R92C_FPGA0_ANAPARAM2) | R92C_FPGA0_ANAPARAM2_CBW20); /* Select 20MHz bandwidth. */ rtwn_rf_write(sc, 0, R92C_RF_CHNLBW, (sc->rf_chnlbw[0] & ~0xfff) | R92C_RF_CHNLBW_BW20 | chan); } } static int rtwn_iq_calib_chain(struct rtwn_softc *sc, int chain, uint16_t tx[2], uint16_t rx[2]) { uint32_t status; int offset = chain * 0x20; if (chain == 0) { /* IQ calibration for chain 0. */ /* IQ calibration settings for chain 0. */ rtwn_bb_write(sc, 0xe30, 0x10008c1f); rtwn_bb_write(sc, 0xe34, 0x10008c1f); rtwn_bb_write(sc, 0xe38, 0x82140102); if (sc->ntxchains > 1) { rtwn_bb_write(sc, 0xe3c, 0x28160202); /* 2T */ /* IQ calibration settings for chain 1. */ rtwn_bb_write(sc, 0xe50, 0x10008c22); rtwn_bb_write(sc, 0xe54, 0x10008c22); rtwn_bb_write(sc, 0xe58, 0x82140102); rtwn_bb_write(sc, 0xe5c, 0x28160202); } else rtwn_bb_write(sc, 0xe3c, 0x28160502); /* 1T */ /* LO calibration settings. */ rtwn_bb_write(sc, 0xe4c, 0x001028d1); /* We're doing LO and IQ calibration in one shot. */ rtwn_bb_write(sc, 0xe48, 0xf9000000); rtwn_bb_write(sc, 0xe48, 0xf8000000); } else { /* IQ calibration for chain 1. */ /* We're doing LO and IQ calibration in one shot. */ rtwn_bb_write(sc, 0xe60, 0x00000002); rtwn_bb_write(sc, 0xe60, 0x00000000); } /* Give LO and IQ calibrations the time to complete. */ DELAY(1000); /* Read IQ calibration status. */ status = rtwn_bb_read(sc, 0xeac); if (status & (1 << (28 + chain * 3))) return (0); /* Tx failed. */ /* Read Tx IQ calibration results. */ tx[0] = (rtwn_bb_read(sc, 0xe94 + offset) >> 16) & 0x3ff; tx[1] = (rtwn_bb_read(sc, 0xe9c + offset) >> 16) & 0x3ff; if (tx[0] == 0x142 || tx[1] == 0x042) return (0); /* Tx failed. */ if (status & (1 << (27 + chain * 3))) return (1); /* Rx failed. */ /* Read Rx IQ calibration results. */ rx[0] = (rtwn_bb_read(sc, 0xea4 + offset) >> 16) & 0x3ff; rx[1] = (rtwn_bb_read(sc, 0xeac + offset) >> 16) & 0x3ff; if (rx[0] == 0x132 || rx[1] == 0x036) return (1); /* Rx failed. */ return (3); /* Both Tx and Rx succeeded. */ } static void rtwn_iq_calib_run(struct rtwn_softc *sc, int n, uint16_t tx[2][2], uint16_t rx[2][2]) { /* Registers to save and restore during IQ calibration. */ struct iq_cal_regs { uint32_t adda[16]; uint8_t txpause; uint8_t bcn_ctrl; uint8_t ustime_tsf; uint32_t gpio_muxcfg; uint32_t ofdm0_trxpathena; uint32_t ofdm0_trmuxpar; uint32_t fpga0_rfifacesw1; } iq_cal_regs; static const uint16_t reg_adda[16] = { 0x85c, 0xe6c, 0xe70, 0xe74, 0xe78, 0xe7c, 0xe80, 0xe84, 0xe88, 0xe8c, 0xed0, 0xed4, 0xed8, 0xedc, 0xee0, 0xeec }; int i, chain; uint32_t hssi_param1; if (n == 0) { for (i = 0; i < nitems(reg_adda); i++) iq_cal_regs.adda[i] = rtwn_bb_read(sc, reg_adda[i]); iq_cal_regs.txpause = rtwn_read_1(sc, R92C_TXPAUSE); iq_cal_regs.bcn_ctrl = rtwn_read_1(sc, R92C_BCN_CTRL); iq_cal_regs.ustime_tsf = rtwn_read_1(sc, R92C_USTIME_TSF); iq_cal_regs.gpio_muxcfg = rtwn_read_4(sc, R92C_GPIO_MUXCFG); } if (sc->ntxchains == 1) { rtwn_bb_write(sc, reg_adda[0], 0x0b1b25a0); for (i = 1; i < nitems(reg_adda); i++) rtwn_bb_write(sc, reg_adda[i], 0x0bdb25a0); } else { for (i = 0; i < nitems(reg_adda); i++) rtwn_bb_write(sc, reg_adda[i], 0x04db25a4); } hssi_param1 = rtwn_bb_read(sc, R92C_HSSI_PARAM1(0)); if (!(hssi_param1 & R92C_HSSI_PARAM1_PI)) { rtwn_bb_write(sc, R92C_HSSI_PARAM1(0), hssi_param1 | R92C_HSSI_PARAM1_PI); rtwn_bb_write(sc, R92C_HSSI_PARAM1(1), hssi_param1 | R92C_HSSI_PARAM1_PI); } if (n == 0) { iq_cal_regs.ofdm0_trxpathena = rtwn_bb_read(sc, R92C_OFDM0_TRXPATHENA); iq_cal_regs.ofdm0_trmuxpar = rtwn_bb_read(sc, R92C_OFDM0_TRMUXPAR); iq_cal_regs.fpga0_rfifacesw1 = rtwn_bb_read(sc, R92C_FPGA0_RFIFACESW(1)); } rtwn_bb_write(sc, R92C_OFDM0_TRXPATHENA, 0x03a05600); rtwn_bb_write(sc, R92C_OFDM0_TRMUXPAR, 0x000800e4); rtwn_bb_write(sc, R92C_FPGA0_RFIFACESW(1), 0x22204000); if (sc->ntxchains > 1) { rtwn_bb_write(sc, R92C_LSSI_PARAM(0), 0x00010000); rtwn_bb_write(sc, R92C_LSSI_PARAM(1), 0x00010000); } rtwn_write_1(sc, R92C_TXPAUSE, 0x3f); rtwn_write_1(sc, R92C_BCN_CTRL, iq_cal_regs.bcn_ctrl & ~(0x08)); rtwn_write_1(sc, R92C_USTIME_TSF, iq_cal_regs.ustime_tsf & ~(0x08)); rtwn_write_1(sc, R92C_GPIO_MUXCFG, iq_cal_regs.gpio_muxcfg & ~(0x20)); rtwn_bb_write(sc, 0x0b68, 0x00080000); if (sc->ntxchains > 1) rtwn_bb_write(sc, 0x0b6c, 0x00080000); rtwn_bb_write(sc, 0x0e28, 0x80800000); rtwn_bb_write(sc, 0x0e40, 0x01007c00); rtwn_bb_write(sc, 0x0e44, 0x01004800); rtwn_bb_write(sc, 0x0b68, 0x00080000); for (chain = 0; chain < sc->ntxchains; chain++) { if (chain > 0) { /* Put chain 0 on standby. */ rtwn_bb_write(sc, 0x0e28, 0x00); rtwn_bb_write(sc, R92C_LSSI_PARAM(0), 0x00010000); rtwn_bb_write(sc, 0x0e28, 0x80800000); /* Enable chain 1. */ for (i = 0; i < nitems(reg_adda); i++) rtwn_bb_write(sc, reg_adda[i], 0x0b1b25a4); } /* Run IQ calibration twice. */ for (i = 0; i < 2; i++) { int ret; ret = rtwn_iq_calib_chain(sc, chain, tx[chain], rx[chain]); if (ret == 0) { DPRINTF(("%s: chain %d: Tx failed.\n", __func__, chain)); tx[chain][0] = 0xff; tx[chain][1] = 0xff; rx[chain][0] = 0xff; rx[chain][1] = 0xff; } else if (ret == 1) { DPRINTF(("%s: chain %d: Rx failed.\n", __func__, chain)); rx[chain][0] = 0xff; rx[chain][1] = 0xff; } else if (ret == 3) { DPRINTF(("%s: chain %d: Both Tx and Rx " "succeeded.\n", __func__, chain)); } } DPRINTF(("%s: results for run %d chain %d: tx[0]=0x%x, " "tx[1]=0x%x rx[0]=0x%x rx[1]=0x%x\n", __func__, n, chain, tx[chain][0], tx[chain][1], rx[chain][0], rx[chain][1])); } rtwn_bb_write(sc, R92C_OFDM0_TRXPATHENA, iq_cal_regs.ofdm0_trxpathena); rtwn_bb_write(sc, R92C_FPGA0_RFIFACESW(1), iq_cal_regs.fpga0_rfifacesw1); rtwn_bb_write(sc, R92C_OFDM0_TRMUXPAR, iq_cal_regs.ofdm0_trmuxpar); rtwn_bb_write(sc, 0x0e28, 0x00); rtwn_bb_write(sc, R92C_LSSI_PARAM(0), 0x00032ed3); if (sc->ntxchains > 1) rtwn_bb_write(sc, R92C_LSSI_PARAM(1), 0x00032ed3); if (n != 0) { if (!(hssi_param1 & R92C_HSSI_PARAM1_PI)) { rtwn_bb_write(sc, R92C_HSSI_PARAM1(0), hssi_param1); rtwn_bb_write(sc, R92C_HSSI_PARAM1(1), hssi_param1); } for (i = 0; i < nitems(reg_adda); i++) rtwn_bb_write(sc, reg_adda[i], iq_cal_regs.adda[i]); rtwn_write_1(sc, R92C_TXPAUSE, iq_cal_regs.txpause); rtwn_write_1(sc, R92C_BCN_CTRL, iq_cal_regs.bcn_ctrl); rtwn_write_1(sc, R92C_USTIME_TSF, iq_cal_regs.ustime_tsf); rtwn_write_4(sc, R92C_GPIO_MUXCFG, iq_cal_regs.gpio_muxcfg); } } #define RTWN_IQ_CAL_MAX_TOLERANCE 5 static int rtwn_iq_calib_compare_results(uint16_t tx1[2][2], uint16_t rx1[2][2], uint16_t tx2[2][2], uint16_t rx2[2][2], int ntxchains) { int chain, i, tx_ok[2], rx_ok[2]; tx_ok[0] = tx_ok[1] = rx_ok[0] = rx_ok[1] = 0; for (chain = 0; chain < ntxchains; chain++) { for (i = 0; i < 2; i++) { if (tx1[chain][i] == 0xff || tx2[chain][i] == 0xff || rx1[chain][i] == 0xff || rx2[chain][i] == 0xff) continue; tx_ok[chain] = (abs(tx1[chain][i] - tx2[chain][i]) <= RTWN_IQ_CAL_MAX_TOLERANCE); rx_ok[chain] = (abs(rx1[chain][i] - rx2[chain][i]) <= RTWN_IQ_CAL_MAX_TOLERANCE); } } if (ntxchains > 1) return (tx_ok[0] && tx_ok[1] && rx_ok[0] && rx_ok[1]); else return (tx_ok[0] && rx_ok[0]); } #undef RTWN_IQ_CAL_MAX_TOLERANCE static void rtwn_iq_calib_write_results(struct rtwn_softc *sc, uint16_t tx[2], uint16_t rx[2], int chain) { uint32_t reg, val, x; long y, tx_c; if (tx[0] == 0xff || tx[1] == 0xff) return; reg = rtwn_bb_read(sc, R92C_OFDM0_TXIQIMBALANCE(chain)); val = ((reg >> 22) & 0x3ff); x = tx[0]; if (x & 0x0200) x |= 0xfc00; reg = (((x * val) >> 8) & 0x3ff); rtwn_bb_write(sc, R92C_OFDM0_TXIQIMBALANCE(chain), reg); reg = rtwn_bb_read(sc, R92C_OFDM0_ECCATHRESHOLD); if (((x * val) >> 7) & 0x01) reg |= 0x80000000; else reg &= ~0x80000000; rtwn_bb_write(sc, R92C_OFDM0_ECCATHRESHOLD, reg); y = tx[1]; if (y & 0x00000200) y |= 0xfffffc00; tx_c = (y * val) >> 8; reg = rtwn_bb_read(sc, R92C_OFDM0_TXAFE(chain)); reg |= ((((tx_c & 0x3c0) >> 6) << 24) & 0xf0000000); rtwn_bb_write(sc, R92C_OFDM0_TXAFE(chain), reg); reg = rtwn_bb_read(sc, R92C_OFDM0_TXIQIMBALANCE(chain)); reg |= (((tx_c & 0x3f) << 16) & 0x003F0000); rtwn_bb_write(sc, R92C_OFDM0_TXIQIMBALANCE(chain), reg); reg = rtwn_bb_read(sc, R92C_OFDM0_ECCATHRESHOLD); if (((y * val) >> 7) & 0x01) reg |= 0x20000000; else reg &= ~0x20000000; rtwn_bb_write(sc, R92C_OFDM0_ECCATHRESHOLD, reg); if (rx[0] == 0xff || rx[1] == 0xff) return; reg = rtwn_bb_read(sc, R92C_OFDM0_RXIQIMBALANCE(chain)); reg |= (rx[0] & 0x3ff); rtwn_bb_write(sc, R92C_OFDM0_RXIQIMBALANCE(chain), reg); reg |= (((rx[1] & 0x03f) << 8) & 0xFC00); rtwn_bb_write(sc, R92C_OFDM0_RXIQIMBALANCE(chain), reg); if (chain == 0) { reg = rtwn_bb_read(sc, R92C_OFDM0_RXIQEXTANTA); reg |= (((rx[1] & 0xf) >> 6) & 0x000f); rtwn_bb_write(sc, R92C_OFDM0_RXIQEXTANTA, reg); } else { reg = rtwn_bb_read(sc, R92C_OFDM0_AGCRSSITABLE); reg |= ((((rx[1] & 0xf) >> 6) << 12) & 0xf000); rtwn_bb_write(sc, R92C_OFDM0_AGCRSSITABLE, reg); } } #define RTWN_IQ_CAL_NRUN 3 static void rtwn_iq_calib(struct rtwn_softc *sc) { uint16_t tx[RTWN_IQ_CAL_NRUN][2][2], rx[RTWN_IQ_CAL_NRUN][2][2]; int n, valid; valid = 0; for (n = 0; n < RTWN_IQ_CAL_NRUN; n++) { rtwn_iq_calib_run(sc, n, tx[n], rx[n]); if (n == 0) continue; /* Valid results remain stable after consecutive runs. */ valid = rtwn_iq_calib_compare_results(tx[n - 1], rx[n - 1], tx[n], rx[n], sc->ntxchains); if (valid) break; } if (valid) { rtwn_iq_calib_write_results(sc, tx[n][0], rx[n][0], 0); if (sc->ntxchains > 1) rtwn_iq_calib_write_results(sc, tx[n][1], rx[n][1], 1); } } #undef RTWN_IQ_CAL_NRUN static void rtwn_lc_calib(struct rtwn_softc *sc) { uint32_t rf_ac[2]; uint8_t txmode; int i; txmode = rtwn_read_1(sc, R92C_OFDM1_LSTF + 3); if ((txmode & 0x70) != 0) { /* Disable all continuous Tx. */ rtwn_write_1(sc, R92C_OFDM1_LSTF + 3, txmode & ~0x70); /* Set RF mode to standby mode. */ for (i = 0; i < sc->nrxchains; i++) { rf_ac[i] = rtwn_rf_read(sc, i, R92C_RF_AC); rtwn_rf_write(sc, i, R92C_RF_AC, RW(rf_ac[i], R92C_RF_AC_MODE, R92C_RF_AC_MODE_STANDBY)); } } else { /* Block all Tx queues. */ rtwn_write_1(sc, R92C_TXPAUSE, 0xff); } /* Start calibration. */ rtwn_rf_write(sc, 0, R92C_RF_CHNLBW, rtwn_rf_read(sc, 0, R92C_RF_CHNLBW) | R92C_RF_CHNLBW_LCSTART); /* Give calibration the time to complete. */ DELAY(100); /* Restore configuration. */ if ((txmode & 0x70) != 0) { /* Restore Tx mode. */ rtwn_write_1(sc, R92C_OFDM1_LSTF + 3, txmode); /* Restore RF mode. */ for (i = 0; i < sc->nrxchains; i++) rtwn_rf_write(sc, i, R92C_RF_AC, rf_ac[i]); } else { /* Unblock all Tx queues. */ rtwn_write_1(sc, R92C_TXPAUSE, 0x00); } } static void rtwn_temp_calib(struct rtwn_softc *sc) { int temp; if (sc->thcal_state == 0) { /* Start measuring temperature. */ rtwn_rf_write(sc, 0, R92C_RF_T_METER, 0x60); sc->thcal_state = 1; return; } sc->thcal_state = 0; /* Read measured temperature. */ temp = rtwn_rf_read(sc, 0, R92C_RF_T_METER) & 0x1f; if (temp == 0) /* Read failed, skip. */ return; DPRINTFN(2, ("temperature=%d\n", temp)); /* * Redo IQ and LC calibration if temperature changed significantly * since last calibration. */ if (sc->thcal_lctemp == 0) { /* First calibration is performed in rtwn_init(). */ sc->thcal_lctemp = temp; } else if (abs(temp - sc->thcal_lctemp) > 1) { DPRINTF(("IQ/LC calib triggered by temp: %d -> %d\n", sc->thcal_lctemp, temp)); rtwn_iq_calib(sc); rtwn_lc_calib(sc); /* Record temperature of last calibration. */ sc->thcal_lctemp = temp; } } static int rtwn_init(struct rtwn_softc *sc) { struct ieee80211com *ic = &sc->sc_ic; struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); uint32_t reg; uint8_t macaddr[IEEE80211_ADDR_LEN]; int i, error; RTWN_LOCK(sc); if (sc->sc_flags & RTWN_RUNNING) { RTWN_UNLOCK(sc); return 0; } sc->sc_flags |= RTWN_RUNNING; /* Init firmware commands ring. */ sc->fwcur = 0; /* Power on adapter. */ error = rtwn_power_on(sc); if (error != 0) { device_printf(sc->sc_dev, "could not power on adapter\n"); goto fail; } /* Initialize DMA. */ error = rtwn_dma_init(sc); if (error != 0) { device_printf(sc->sc_dev, "could not initialize DMA\n"); goto fail; } /* Set info size in Rx descriptors (in 64-bit words). */ rtwn_write_1(sc, R92C_RX_DRVINFO_SZ, 4); /* Disable interrupts. */ rtwn_write_4(sc, R92C_HISR, 0x00000000); rtwn_write_4(sc, R92C_HIMR, 0x00000000); /* Set MAC address. */ IEEE80211_ADDR_COPY(macaddr, vap ? vap->iv_myaddr : ic->ic_macaddr); for (i = 0; i < IEEE80211_ADDR_LEN; i++) rtwn_write_1(sc, R92C_MACID + i, macaddr[i]); /* Set initial network type. */ reg = rtwn_read_4(sc, R92C_CR); reg = RW(reg, R92C_CR_NETTYPE, R92C_CR_NETTYPE_INFRA); rtwn_write_4(sc, R92C_CR, reg); rtwn_rxfilter_init(sc); reg = rtwn_read_4(sc, R92C_RRSR); reg = RW(reg, R92C_RRSR_RATE_BITMAP, R92C_RRSR_RATE_ALL); rtwn_write_4(sc, R92C_RRSR, reg); /* Set short/long retry limits. */ rtwn_write_2(sc, R92C_RL, SM(R92C_RL_SRL, 0x07) | SM(R92C_RL_LRL, 0x07)); /* Initialize EDCA parameters. */ rtwn_edca_init(sc); /* Set data and response automatic rate fallback retry counts. */ rtwn_write_4(sc, R92C_DARFRC + 0, 0x01000000); rtwn_write_4(sc, R92C_DARFRC + 4, 0x07060504); rtwn_write_4(sc, R92C_RARFRC + 0, 0x01000000); rtwn_write_4(sc, R92C_RARFRC + 4, 0x07060504); rtwn_write_2(sc, R92C_FWHW_TXQ_CTRL, 0x1f80); /* Set ACK timeout. */ rtwn_write_1(sc, R92C_ACKTO, 0x40); /* Initialize beacon parameters. */ rtwn_write_2(sc, R92C_TBTT_PROHIBIT, 0x6404); rtwn_write_1(sc, R92C_DRVERLYINT, 0x05); rtwn_write_1(sc, R92C_BCNDMATIM, 0x02); rtwn_write_2(sc, R92C_BCNTCFG, 0x660f); /* Setup AMPDU aggregation. */ rtwn_write_4(sc, R92C_AGGLEN_LMT, 0x99997631); /* MCS7~0 */ rtwn_write_1(sc, R92C_AGGR_BREAK_TIME, 0x16); rtwn_write_1(sc, R92C_BCN_MAX_ERR, 0xff); rtwn_write_1(sc, R92C_BCN_CTRL, R92C_BCN_CTRL_DIS_TSF_UDT0); rtwn_write_4(sc, R92C_PIFS, 0x1c); rtwn_write_4(sc, R92C_MCUTST_1, 0x0); /* Load 8051 microcode. */ error = rtwn_load_firmware(sc); if (error != 0) goto fail; /* Initialize MAC/BB/RF blocks. */ rtwn_mac_init(sc); rtwn_bb_init(sc); rtwn_rf_init(sc); /* Turn CCK and OFDM blocks on. */ reg = rtwn_bb_read(sc, R92C_FPGA0_RFMOD); reg |= R92C_RFMOD_CCK_EN; rtwn_bb_write(sc, R92C_FPGA0_RFMOD, reg); reg = rtwn_bb_read(sc, R92C_FPGA0_RFMOD); reg |= R92C_RFMOD_OFDM_EN; rtwn_bb_write(sc, R92C_FPGA0_RFMOD, reg); /* Clear per-station keys table. */ rtwn_cam_init(sc); /* Enable hardware sequence numbering. */ rtwn_write_1(sc, R92C_HWSEQ_CTRL, 0xff); /* Perform LO and IQ calibrations. */ rtwn_iq_calib(sc); /* Perform LC calibration. */ rtwn_lc_calib(sc); rtwn_pa_bias_init(sc); /* Initialize GPIO setting. */ rtwn_write_1(sc, R92C_GPIO_MUXCFG, rtwn_read_1(sc, R92C_GPIO_MUXCFG) & ~R92C_GPIO_MUXCFG_ENBT); /* Fix for lower temperature. */ rtwn_write_1(sc, 0x15, 0xe9); /* CLear pending interrupts. */ rtwn_write_4(sc, R92C_HISR, 0xffffffff); /* Enable interrupts. */ rtwn_write_4(sc, R92C_HIMR, RTWN_INT_ENABLE); callout_reset(&sc->watchdog_to, hz, rtwn_watchdog, sc); fail: if (error != 0) rtwn_stop_locked(sc); RTWN_UNLOCK(sc); return error; } static void rtwn_stop_locked(struct rtwn_softc *sc) { uint16_t reg; int i; RTWN_LOCK_ASSERT(sc); if (!(sc->sc_flags & RTWN_RUNNING)) return; sc->sc_tx_timer = 0; callout_stop(&sc->watchdog_to); callout_stop(&sc->calib_to); sc->sc_flags &= ~RTWN_RUNNING; /* Disable interrupts. */ rtwn_write_4(sc, R92C_HISR, 0x00000000); rtwn_write_4(sc, R92C_HIMR, 0x00000000); /* Stop hardware. */ rtwn_write_1(sc, R92C_TXPAUSE, 0xff); rtwn_write_1(sc, R92C_RF_CTRL, 0x00); reg = rtwn_read_1(sc, R92C_SYS_FUNC_EN); reg |= R92C_SYS_FUNC_EN_BB_GLB_RST; rtwn_write_1(sc, R92C_SYS_FUNC_EN, reg); reg &= ~R92C_SYS_FUNC_EN_BB_GLB_RST; rtwn_write_1(sc, R92C_SYS_FUNC_EN, reg); reg = rtwn_read_2(sc, R92C_CR); reg &= ~(R92C_CR_HCI_TXDMA_EN | R92C_CR_HCI_RXDMA_EN | R92C_CR_TXDMA_EN | R92C_CR_RXDMA_EN | R92C_CR_PROTOCOL_EN | R92C_CR_SCHEDULE_EN | R92C_CR_MACTXEN | R92C_CR_MACRXEN | R92C_CR_ENSEC); rtwn_write_2(sc, R92C_CR, reg); if (rtwn_read_1(sc, R92C_MCUFWDL) & R92C_MCUFWDL_RAM_DL_SEL) rtwn_fw_reset(sc); /* TODO: linux does additional btcoex stuff here */ rtwn_write_2(sc, R92C_AFE_PLL_CTRL, 0x80); /* linux magic number */ rtwn_write_1(sc, R92C_SPS0_CTRL, 0x23); /* ditto */ rtwn_write_1(sc, R92C_AFE_XTAL_CTRL, 0x0e); /* different with btcoex */ rtwn_write_1(sc, R92C_RSV_CTRL, 0x0e); rtwn_write_1(sc, R92C_APS_FSMCO, R92C_APS_FSMCO_PDN_EN); for (i = 0; i < RTWN_NTXQUEUES; i++) rtwn_reset_tx_list(sc, i); rtwn_reset_rx_list(sc); } static void rtwn_stop(struct rtwn_softc *sc) { RTWN_LOCK(sc); rtwn_stop_locked(sc); RTWN_UNLOCK(sc); } static void rtwn_intr(void *arg) { struct rtwn_softc *sc = arg; uint32_t status; int i; RTWN_LOCK(sc); status = rtwn_read_4(sc, R92C_HISR); if (status == 0 || status == 0xffffffff) { RTWN_UNLOCK(sc); return; } /* Disable interrupts. */ rtwn_write_4(sc, R92C_HIMR, 0x00000000); /* Ack interrupts. */ rtwn_write_4(sc, R92C_HISR, status); /* Vendor driver treats RX errors like ROK... */ if (status & (R92C_IMR_ROK | R92C_IMR_RXFOVW | R92C_IMR_RDU)) { bus_dmamap_sync(sc->rx_ring.desc_dmat, sc->rx_ring.desc_map, BUS_DMASYNC_POSTREAD); for (i = 0; i < RTWN_RX_LIST_COUNT; i++) { struct r92c_rx_desc *rx_desc = &sc->rx_ring.desc[i]; struct rtwn_rx_data *rx_data = &sc->rx_ring.rx_data[i]; if (le32toh(rx_desc->rxdw0) & R92C_RXDW0_OWN) continue; rtwn_rx_frame(sc, rx_desc, rx_data, i); } } if (status & R92C_IMR_BDOK) rtwn_tx_done(sc, RTWN_BEACON_QUEUE); if (status & R92C_IMR_HIGHDOK) rtwn_tx_done(sc, RTWN_HIGH_QUEUE); if (status & R92C_IMR_MGNTDOK) rtwn_tx_done(sc, RTWN_MGNT_QUEUE); if (status & R92C_IMR_BKDOK) rtwn_tx_done(sc, RTWN_BK_QUEUE); if (status & R92C_IMR_BEDOK) rtwn_tx_done(sc, RTWN_BE_QUEUE); if (status & R92C_IMR_VIDOK) rtwn_tx_done(sc, RTWN_VI_QUEUE); if (status & R92C_IMR_VODOK) rtwn_tx_done(sc, RTWN_VO_QUEUE); /* Enable interrupts. */ rtwn_write_4(sc, R92C_HIMR, RTWN_INT_ENABLE); RTWN_UNLOCK(sc); }