3272 lines
84 KiB
C
3272 lines
84 KiB
C
/* $NetBSD: if_wpi.c,v 1.49 2011/04/02 08:11:31 mbalmer Exp $ */
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/*-
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* Copyright (c) 2006, 2007
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* Damien Bergamini <damien.bergamini@free.fr>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: if_wpi.c,v 1.49 2011/04/02 08:11:31 mbalmer Exp $");
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/*
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* Driver for Intel PRO/Wireless 3945ABG 802.11 network adapters.
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*/
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#include <sys/param.h>
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#include <sys/sockio.h>
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#include <sys/sysctl.h>
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#include <sys/mbuf.h>
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#include <sys/kernel.h>
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#include <sys/socket.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <sys/mutex.h>
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#include <sys/once.h>
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#include <sys/conf.h>
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#include <sys/kauth.h>
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#include <sys/callout.h>
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#include <sys/proc.h>
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#include <sys/bus.h>
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#include <machine/endian.h>
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#include <sys/intr.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcidevs.h>
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#include <net/bpf.h>
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#include <net/if.h>
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#include <net/if_arp.h>
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#include <net/if_dl.h>
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#include <net/if_ether.h>
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#include <net/if_media.h>
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#include <net/if_types.h>
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#include <net80211/ieee80211_var.h>
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#include <net80211/ieee80211_amrr.h>
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#include <net80211/ieee80211_radiotap.h>
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/in_var.h>
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#include <netinet/ip.h>
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#include <dev/firmload.h>
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#include <dev/pci/if_wpireg.h>
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#include <dev/pci/if_wpivar.h>
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#ifdef WPI_DEBUG
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#define DPRINTF(x) if (wpi_debug > 0) printf x
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#define DPRINTFN(n, x) if (wpi_debug >= (n)) printf x
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int wpi_debug = 1;
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#else
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#define DPRINTF(x)
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#define DPRINTFN(n, x)
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#endif
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/*
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* Supported rates for 802.11a/b/g modes (in 500Kbps unit).
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*/
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static const struct ieee80211_rateset wpi_rateset_11a =
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{ 8, { 12, 18, 24, 36, 48, 72, 96, 108 } };
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static const struct ieee80211_rateset wpi_rateset_11b =
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{ 4, { 2, 4, 11, 22 } };
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static const struct ieee80211_rateset wpi_rateset_11g =
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{ 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } };
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static once_t wpi_firmware_init;
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static kmutex_t wpi_firmware_mutex;
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static size_t wpi_firmware_users;
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static uint8_t *wpi_firmware_image;
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static size_t wpi_firmware_size;
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static int wpi_match(device_t, cfdata_t, void *);
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static void wpi_attach(device_t, device_t, void *);
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static int wpi_detach(device_t , int);
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static int wpi_dma_contig_alloc(bus_dma_tag_t, struct wpi_dma_info *,
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void **, bus_size_t, bus_size_t, int);
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static void wpi_dma_contig_free(struct wpi_dma_info *);
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static int wpi_alloc_shared(struct wpi_softc *);
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static void wpi_free_shared(struct wpi_softc *);
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static int wpi_alloc_fwmem(struct wpi_softc *);
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static void wpi_free_fwmem(struct wpi_softc *);
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static struct wpi_rbuf *wpi_alloc_rbuf(struct wpi_softc *);
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static void wpi_free_rbuf(struct mbuf *, void *, size_t, void *);
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static int wpi_alloc_rpool(struct wpi_softc *);
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static void wpi_free_rpool(struct wpi_softc *);
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static int wpi_alloc_rx_ring(struct wpi_softc *, struct wpi_rx_ring *);
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static void wpi_reset_rx_ring(struct wpi_softc *, struct wpi_rx_ring *);
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static void wpi_free_rx_ring(struct wpi_softc *, struct wpi_rx_ring *);
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static int wpi_alloc_tx_ring(struct wpi_softc *, struct wpi_tx_ring *, int,
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int);
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static void wpi_reset_tx_ring(struct wpi_softc *, struct wpi_tx_ring *);
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static void wpi_free_tx_ring(struct wpi_softc *, struct wpi_tx_ring *);
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static struct ieee80211_node * wpi_node_alloc(struct ieee80211_node_table *);
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static void wpi_newassoc(struct ieee80211_node *, int);
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static int wpi_media_change(struct ifnet *);
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static int wpi_newstate(struct ieee80211com *, enum ieee80211_state, int);
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static void wpi_fix_channel(struct ieee80211com *, struct mbuf *);
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static void wpi_mem_lock(struct wpi_softc *);
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static void wpi_mem_unlock(struct wpi_softc *);
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static uint32_t wpi_mem_read(struct wpi_softc *, uint16_t);
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static void wpi_mem_write(struct wpi_softc *, uint16_t, uint32_t);
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static void wpi_mem_write_region_4(struct wpi_softc *, uint16_t,
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const uint32_t *, int);
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static int wpi_read_prom_data(struct wpi_softc *, uint32_t, void *, int);
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static int wpi_load_microcode(struct wpi_softc *, const uint8_t *, int);
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static int wpi_load_firmware(struct wpi_softc *);
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static void wpi_calib_timeout(void *);
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static void wpi_iter_func(void *, struct ieee80211_node *);
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static void wpi_power_calibration(struct wpi_softc *, int);
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static void wpi_rx_intr(struct wpi_softc *, struct wpi_rx_desc *,
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struct wpi_rx_data *);
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static void wpi_tx_intr(struct wpi_softc *, struct wpi_rx_desc *);
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static void wpi_cmd_intr(struct wpi_softc *, struct wpi_rx_desc *);
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static void wpi_notif_intr(struct wpi_softc *);
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static int wpi_intr(void *);
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static void wpi_read_eeprom(struct wpi_softc *);
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static void wpi_read_eeprom_channels(struct wpi_softc *, int);
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static void wpi_read_eeprom_group(struct wpi_softc *, int);
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static uint8_t wpi_plcp_signal(int);
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static int wpi_tx_data(struct wpi_softc *, struct mbuf *,
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struct ieee80211_node *, int);
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static void wpi_start(struct ifnet *);
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static void wpi_watchdog(struct ifnet *);
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static int wpi_ioctl(struct ifnet *, u_long, void *);
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static int wpi_cmd(struct wpi_softc *, int, const void *, int, int);
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static int wpi_wme_update(struct ieee80211com *);
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static int wpi_mrr_setup(struct wpi_softc *);
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static void wpi_set_led(struct wpi_softc *, uint8_t, uint8_t, uint8_t);
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static void wpi_enable_tsf(struct wpi_softc *, struct ieee80211_node *);
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static int wpi_set_txpower(struct wpi_softc *,
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struct ieee80211_channel *, int);
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static int wpi_get_power_index(struct wpi_softc *,
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struct wpi_power_group *, struct ieee80211_channel *, int);
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static int wpi_setup_beacon(struct wpi_softc *, struct ieee80211_node *);
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static int wpi_auth(struct wpi_softc *);
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static int wpi_scan(struct wpi_softc *, uint16_t);
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static int wpi_config(struct wpi_softc *);
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static void wpi_stop_master(struct wpi_softc *);
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static int wpi_power_up(struct wpi_softc *);
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static int wpi_reset(struct wpi_softc *);
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static void wpi_hw_config(struct wpi_softc *);
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static int wpi_init(struct ifnet *);
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static void wpi_stop(struct ifnet *, int);
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static bool wpi_resume(device_t, const pmf_qual_t *);
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static int wpi_getrfkill(struct wpi_softc *);
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static void wpi_sysctlattach(struct wpi_softc *);
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CFATTACH_DECL_NEW(wpi, sizeof (struct wpi_softc), wpi_match, wpi_attach,
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wpi_detach, NULL);
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static int
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wpi_match(device_t parent, cfdata_t match __unused, void *aux)
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{
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struct pci_attach_args *pa = aux;
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if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_INTEL)
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return 0;
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if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_3945ABG_1 ||
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PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_3945ABG_2)
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return 1;
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return 0;
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}
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/* Base Address Register */
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#define WPI_PCI_BAR0 0x10
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static int
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wpi_attach_once(void)
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{
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mutex_init(&wpi_firmware_mutex, MUTEX_DEFAULT, IPL_NONE);
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return 0;
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}
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static void
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wpi_attach(device_t parent __unused, device_t self, void *aux)
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{
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struct wpi_softc *sc = device_private(self);
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struct ieee80211com *ic = &sc->sc_ic;
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struct ifnet *ifp = &sc->sc_ec.ec_if;
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struct pci_attach_args *pa = aux;
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const char *intrstr;
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char devinfo[256];
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bus_space_tag_t memt;
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bus_space_handle_t memh;
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pci_intr_handle_t ih;
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pcireg_t data;
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int error, ac, revision;
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RUN_ONCE(&wpi_firmware_init, wpi_attach_once);
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sc->fw_used = false;
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sc->sc_dev = self;
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sc->sc_pct = pa->pa_pc;
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sc->sc_pcitag = pa->pa_tag;
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callout_init(&sc->calib_to, 0);
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callout_setfunc(&sc->calib_to, wpi_calib_timeout, sc);
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pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof devinfo);
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revision = PCI_REVISION(pa->pa_class);
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aprint_normal(": %s (rev. 0x%02x)\n", devinfo, revision);
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/* enable bus-mastering */
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data = pci_conf_read(sc->sc_pct, sc->sc_pcitag, PCI_COMMAND_STATUS_REG);
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data |= PCI_COMMAND_MASTER_ENABLE;
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pci_conf_write(sc->sc_pct, sc->sc_pcitag, PCI_COMMAND_STATUS_REG, data);
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/* map the register window */
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error = pci_mapreg_map(pa, WPI_PCI_BAR0, PCI_MAPREG_TYPE_MEM |
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PCI_MAPREG_MEM_TYPE_32BIT, 0, &memt, &memh, NULL, &sc->sc_sz);
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if (error != 0) {
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aprint_error_dev(self, "could not map memory space\n");
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return;
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}
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sc->sc_st = memt;
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sc->sc_sh = memh;
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sc->sc_dmat = pa->pa_dmat;
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if (pci_intr_map(pa, &ih) != 0) {
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aprint_error_dev(self, "could not map interrupt\n");
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return;
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}
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intrstr = pci_intr_string(sc->sc_pct, ih);
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sc->sc_ih = pci_intr_establish(sc->sc_pct, ih, IPL_NET, wpi_intr, sc);
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if (sc->sc_ih == NULL) {
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aprint_error_dev(self, "could not establish interrupt");
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if (intrstr != NULL)
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aprint_error(" at %s", intrstr);
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aprint_error("\n");
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return;
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}
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aprint_normal_dev(self, "interrupting at %s\n", intrstr);
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if (wpi_reset(sc) != 0) {
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aprint_error_dev(self, "could not reset adapter\n");
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return;
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}
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/*
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* Allocate DMA memory for firmware transfers.
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*/
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if ((error = wpi_alloc_fwmem(sc)) != 0)
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return;
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/*
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* Allocate shared page and Tx/Rx rings.
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*/
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if ((error = wpi_alloc_shared(sc)) != 0) {
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aprint_error_dev(self, "could not allocate shared area\n");
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goto fail1;
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}
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if ((error = wpi_alloc_rpool(sc)) != 0) {
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aprint_error_dev(self, "could not allocate Rx buffers\n");
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goto fail2;
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}
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for (ac = 0; ac < 4; ac++) {
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error = wpi_alloc_tx_ring(sc, &sc->txq[ac], WPI_TX_RING_COUNT, ac);
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if (error != 0) {
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aprint_error_dev(self, "could not allocate Tx ring %d\n", ac);
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goto fail3;
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}
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}
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error = wpi_alloc_tx_ring(sc, &sc->cmdq, WPI_CMD_RING_COUNT, 4);
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if (error != 0) {
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aprint_error_dev(self, "could not allocate command ring\n");
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goto fail3;
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}
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if (wpi_alloc_rx_ring(sc, &sc->rxq) != 0) {
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aprint_error_dev(self, "could not allocate Rx ring\n");
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goto fail4;
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}
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ic->ic_ifp = ifp;
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ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */
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ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */
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ic->ic_state = IEEE80211_S_INIT;
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/* set device capabilities */
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ic->ic_caps =
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IEEE80211_C_IBSS | /* IBSS mode support */
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IEEE80211_C_WPA | /* 802.11i */
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IEEE80211_C_MONITOR | /* monitor mode supported */
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IEEE80211_C_TXPMGT | /* tx power management */
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IEEE80211_C_SHSLOT | /* short slot time supported */
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IEEE80211_C_SHPREAMBLE | /* short preamble supported */
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IEEE80211_C_WME; /* 802.11e */
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/* read supported channels and MAC address from EEPROM */
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wpi_read_eeprom(sc);
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/* set supported .11a, .11b, .11g rates */
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ic->ic_sup_rates[IEEE80211_MODE_11A] = wpi_rateset_11a;
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ic->ic_sup_rates[IEEE80211_MODE_11B] = wpi_rateset_11b;
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ic->ic_sup_rates[IEEE80211_MODE_11G] = wpi_rateset_11g;
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ic->ic_ibss_chan = &ic->ic_channels[0];
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ifp->if_softc = sc;
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ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
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ifp->if_init = wpi_init;
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ifp->if_stop = wpi_stop;
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ifp->if_ioctl = wpi_ioctl;
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ifp->if_start = wpi_start;
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ifp->if_watchdog = wpi_watchdog;
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IFQ_SET_READY(&ifp->if_snd);
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memcpy(ifp->if_xname, device_xname(self), IFNAMSIZ);
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if_attach(ifp);
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ieee80211_ifattach(ic);
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/* override default methods */
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ic->ic_node_alloc = wpi_node_alloc;
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ic->ic_newassoc = wpi_newassoc;
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ic->ic_wme.wme_update = wpi_wme_update;
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/* override state transition machine */
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sc->sc_newstate = ic->ic_newstate;
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ic->ic_newstate = wpi_newstate;
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ieee80211_media_init(ic, wpi_media_change, ieee80211_media_status);
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sc->amrr.amrr_min_success_threshold = 1;
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sc->amrr.amrr_max_success_threshold = 15;
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wpi_sysctlattach(sc);
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if (pmf_device_register(self, NULL, wpi_resume))
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pmf_class_network_register(self, ifp);
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else
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aprint_error_dev(self, "couldn't establish power handler\n");
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bpf_attach2(ifp, DLT_IEEE802_11_RADIO,
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sizeof(struct ieee80211_frame) + IEEE80211_RADIOTAP_HDRLEN,
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&sc->sc_drvbpf);
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sc->sc_rxtap_len = sizeof sc->sc_rxtapu;
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sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len);
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sc->sc_rxtap.wr_ihdr.it_present = htole32(WPI_RX_RADIOTAP_PRESENT);
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sc->sc_txtap_len = sizeof sc->sc_txtapu;
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sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len);
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sc->sc_txtap.wt_ihdr.it_present = htole32(WPI_TX_RADIOTAP_PRESENT);
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ieee80211_announce(ic);
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return;
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fail4: wpi_free_tx_ring(sc, &sc->cmdq);
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fail3: while (--ac >= 0)
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wpi_free_tx_ring(sc, &sc->txq[ac]);
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wpi_free_rpool(sc);
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fail2: wpi_free_shared(sc);
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fail1: wpi_free_fwmem(sc);
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}
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static int
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wpi_detach(device_t self, int flags __unused)
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{
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struct wpi_softc *sc = device_private(self);
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struct ifnet *ifp = sc->sc_ic.ic_ifp;
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int ac;
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wpi_stop(ifp, 1);
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if (ifp != NULL)
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bpf_detach(ifp);
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ieee80211_ifdetach(&sc->sc_ic);
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if (ifp != NULL)
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if_detach(ifp);
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for (ac = 0; ac < 4; ac++)
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wpi_free_tx_ring(sc, &sc->txq[ac]);
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wpi_free_tx_ring(sc, &sc->cmdq);
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wpi_free_rx_ring(sc, &sc->rxq);
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wpi_free_rpool(sc);
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wpi_free_shared(sc);
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if (sc->sc_ih != NULL) {
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pci_intr_disestablish(sc->sc_pct, sc->sc_ih);
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sc->sc_ih = NULL;
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}
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bus_space_unmap(sc->sc_st, sc->sc_sh, sc->sc_sz);
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if (sc->fw_used) {
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mutex_enter(&wpi_firmware_mutex);
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if (--wpi_firmware_users == 0)
|
|
firmware_free(wpi_firmware_image, wpi_firmware_size);
|
|
mutex_exit(&wpi_firmware_mutex);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
wpi_dma_contig_alloc(bus_dma_tag_t tag, struct wpi_dma_info *dma,
|
|
void **kvap, bus_size_t size, bus_size_t alignment, int flags)
|
|
{
|
|
int nsegs, error;
|
|
|
|
dma->tag = tag;
|
|
dma->size = size;
|
|
|
|
error = bus_dmamap_create(tag, size, 1, size, 0, flags, &dma->map);
|
|
if (error != 0)
|
|
goto fail;
|
|
|
|
error = bus_dmamem_alloc(tag, size, alignment, 0, &dma->seg, 1, &nsegs,
|
|
flags);
|
|
if (error != 0)
|
|
goto fail;
|
|
|
|
error = bus_dmamem_map(tag, &dma->seg, 1, size, &dma->vaddr, flags);
|
|
if (error != 0)
|
|
goto fail;
|
|
|
|
error = bus_dmamap_load(tag, dma->map, dma->vaddr, size, NULL, flags);
|
|
if (error != 0)
|
|
goto fail;
|
|
|
|
memset(dma->vaddr, 0, size);
|
|
|
|
dma->paddr = dma->map->dm_segs[0].ds_addr;
|
|
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->map != NULL) {
|
|
if (dma->vaddr != NULL) {
|
|
bus_dmamap_unload(dma->tag, dma->map);
|
|
bus_dmamem_unmap(dma->tag, dma->vaddr, dma->size);
|
|
bus_dmamem_free(dma->tag, &dma->seg, 1);
|
|
dma->vaddr = NULL;
|
|
}
|
|
bus_dmamap_destroy(dma->tag, dma->map);
|
|
dma->map = NULL;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Allocate a shared page between host and NIC.
|
|
*/
|
|
static int
|
|
wpi_alloc_shared(struct wpi_softc *sc)
|
|
{
|
|
int error;
|
|
/* must be aligned on a 4K-page boundary */
|
|
error = wpi_dma_contig_alloc(sc->sc_dmat, &sc->shared_dma,
|
|
(void **)&sc->shared, sizeof (struct wpi_shared),
|
|
WPI_BUF_ALIGN,BUS_DMA_NOWAIT);
|
|
if (error != 0)
|
|
aprint_error_dev(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);
|
|
}
|
|
|
|
/*
|
|
* Allocate DMA-safe memory for firmware transfer.
|
|
*/
|
|
static int
|
|
wpi_alloc_fwmem(struct wpi_softc *sc)
|
|
{
|
|
int error;
|
|
/* allocate enough contiguous space to store text and data */
|
|
error = wpi_dma_contig_alloc(sc->sc_dmat, &sc->fw_dma, NULL,
|
|
WPI_FW_MAIN_TEXT_MAXSZ + WPI_FW_MAIN_DATA_MAXSZ, 0,
|
|
BUS_DMA_NOWAIT);
|
|
|
|
if (error != 0)
|
|
aprint_error_dev(sc->sc_dev,
|
|
"could not allocate firmware transfer area"
|
|
"DMA memory\n");
|
|
return error;
|
|
}
|
|
|
|
static void
|
|
wpi_free_fwmem(struct wpi_softc *sc)
|
|
{
|
|
wpi_dma_contig_free(&sc->fw_dma);
|
|
}
|
|
|
|
|
|
static struct wpi_rbuf *
|
|
wpi_alloc_rbuf(struct wpi_softc *sc)
|
|
{
|
|
struct wpi_rbuf *rbuf;
|
|
|
|
mutex_enter(&sc->rxq.freelist_mtx);
|
|
rbuf = SLIST_FIRST(&sc->rxq.freelist);
|
|
if (rbuf != NULL) {
|
|
SLIST_REMOVE_HEAD(&sc->rxq.freelist, next);
|
|
sc->rxq.nb_free_entries --;
|
|
}
|
|
mutex_exit(&sc->rxq.freelist_mtx);
|
|
|
|
return rbuf;
|
|
}
|
|
|
|
/*
|
|
* This is called automatically by the network stack when the mbuf to which our
|
|
* Rx buffer is attached is freed.
|
|
*/
|
|
static void
|
|
wpi_free_rbuf(struct mbuf* m, void *buf, size_t size, void *arg)
|
|
{
|
|
struct wpi_rbuf *rbuf = arg;
|
|
struct wpi_softc *sc = rbuf->sc;
|
|
|
|
/* put the buffer back in the free list */
|
|
|
|
mutex_enter(&sc->rxq.freelist_mtx);
|
|
SLIST_INSERT_HEAD(&sc->rxq.freelist, rbuf, next);
|
|
mutex_exit(&sc->rxq.freelist_mtx);
|
|
/* No need to protect this with a mutex, see wpi_rx_intr */
|
|
sc->rxq.nb_free_entries ++;
|
|
|
|
if (__predict_true(m != NULL))
|
|
pool_cache_put(mb_cache, m);
|
|
}
|
|
|
|
static int
|
|
wpi_alloc_rpool(struct wpi_softc *sc)
|
|
{
|
|
struct wpi_rx_ring *ring = &sc->rxq;
|
|
struct wpi_rbuf *rbuf;
|
|
int i, error;
|
|
|
|
/* allocate a big chunk of DMA'able memory.. */
|
|
error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->buf_dma, NULL,
|
|
WPI_RBUF_COUNT * WPI_RBUF_SIZE, WPI_BUF_ALIGN, BUS_DMA_NOWAIT);
|
|
if (error != 0) {
|
|
aprint_normal_dev(sc->sc_dev,
|
|
"could not allocate Rx buffers DMA memory\n");
|
|
return error;
|
|
}
|
|
|
|
/* ..and split it into 3KB chunks */
|
|
mutex_init(&ring->freelist_mtx, MUTEX_DEFAULT, IPL_NET);
|
|
SLIST_INIT(&ring->freelist);
|
|
for (i = 0; i < WPI_RBUF_COUNT; i++) {
|
|
rbuf = &ring->rbuf[i];
|
|
rbuf->sc = sc; /* backpointer for callbacks */
|
|
rbuf->vaddr = (char *)ring->buf_dma.vaddr + i * WPI_RBUF_SIZE;
|
|
rbuf->paddr = ring->buf_dma.paddr + i * WPI_RBUF_SIZE;
|
|
|
|
SLIST_INSERT_HEAD(&ring->freelist, rbuf, next);
|
|
}
|
|
|
|
ring->nb_free_entries = WPI_RBUF_COUNT;
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
wpi_free_rpool(struct wpi_softc *sc)
|
|
{
|
|
wpi_dma_contig_free(&sc->rxq.buf_dma);
|
|
}
|
|
|
|
static int
|
|
wpi_alloc_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring)
|
|
{
|
|
struct wpi_rx_data *data;
|
|
struct wpi_rbuf *rbuf;
|
|
int i, error;
|
|
|
|
ring->cur = 0;
|
|
|
|
error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->desc_dma,
|
|
(void **)&ring->desc,
|
|
WPI_RX_RING_COUNT * sizeof (struct wpi_rx_desc),
|
|
WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT);
|
|
if (error != 0) {
|
|
aprint_error_dev(sc->sc_dev, "could not allocate rx ring DMA memory\n");
|
|
goto fail;
|
|
}
|
|
|
|
/*
|
|
* Setup Rx buffers.
|
|
*/
|
|
for (i = 0; i < WPI_RX_RING_COUNT; i++) {
|
|
data = &ring->data[i];
|
|
|
|
MGETHDR(data->m, M_DONTWAIT, MT_DATA);
|
|
if (data->m == NULL) {
|
|
aprint_error_dev(sc->sc_dev, "could not allocate rx mbuf\n");
|
|
error = ENOMEM;
|
|
goto fail;
|
|
}
|
|
if ((rbuf = wpi_alloc_rbuf(sc)) == NULL) {
|
|
m_freem(data->m);
|
|
data->m = NULL;
|
|
aprint_error_dev(sc->sc_dev, "could not allocate rx cluster\n");
|
|
error = ENOMEM;
|
|
goto fail;
|
|
}
|
|
/* attach Rx buffer to mbuf */
|
|
MEXTADD(data->m, rbuf->vaddr, WPI_RBUF_SIZE, 0, wpi_free_rbuf,
|
|
rbuf);
|
|
data->m->m_flags |= M_EXT_RW;
|
|
|
|
ring->desc[i] = htole32(rbuf->paddr);
|
|
}
|
|
|
|
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);
|
|
}
|
|
#ifdef WPI_DEBUG
|
|
if (ntries == 100 && wpi_debug > 0)
|
|
aprint_error_dev(sc->sc_dev, "timeout resetting Rx ring\n");
|
|
#endif
|
|
wpi_mem_unlock(sc);
|
|
|
|
ring->cur = 0;
|
|
}
|
|
|
|
static void
|
|
wpi_free_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring)
|
|
{
|
|
int i;
|
|
|
|
wpi_dma_contig_free(&ring->desc_dma);
|
|
|
|
for (i = 0; i < WPI_RX_RING_COUNT; i++) {
|
|
if (ring->data[i].m != NULL)
|
|
m_freem(ring->data[i].m);
|
|
}
|
|
}
|
|
|
|
static int
|
|
wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, int count,
|
|
int qid)
|
|
{
|
|
struct wpi_tx_data *data;
|
|
int i, error;
|
|
|
|
ring->qid = qid;
|
|
ring->count = count;
|
|
ring->queued = 0;
|
|
ring->cur = 0;
|
|
|
|
error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->desc_dma,
|
|
(void **)&ring->desc, count * sizeof (struct wpi_tx_desc),
|
|
WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT);
|
|
if (error != 0) {
|
|
aprint_error_dev(sc->sc_dev, "could not allocate tx ring 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->sc_dmat, &ring->cmd_dma,
|
|
(void **)&ring->cmd,
|
|
count * sizeof (struct wpi_tx_cmd), 4, BUS_DMA_NOWAIT);
|
|
if (error != 0) {
|
|
aprint_error_dev(sc->sc_dev, "could not allocate tx cmd DMA memory\n");
|
|
goto fail;
|
|
}
|
|
|
|
ring->data = malloc(count * sizeof (struct wpi_tx_data), M_DEVBUF,
|
|
M_NOWAIT);
|
|
if (ring->data == NULL) {
|
|
aprint_error_dev(sc->sc_dev, "could not allocate tx data slots\n");
|
|
goto fail;
|
|
}
|
|
|
|
memset(ring->data, 0, count * sizeof (struct wpi_tx_data));
|
|
|
|
for (i = 0; i < count; i++) {
|
|
data = &ring->data[i];
|
|
|
|
error = bus_dmamap_create(sc->sc_dmat, MCLBYTES,
|
|
WPI_MAX_SCATTER - 1, MCLBYTES, 0, BUS_DMA_NOWAIT,
|
|
&data->map);
|
|
if (error != 0) {
|
|
aprint_error_dev(sc->sc_dev, "could not create tx buf DMA map\n");
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
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) {
|
|
aprint_error_dev(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(sc->sc_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_unload(sc->sc_dmat, data->map);
|
|
m_freem(data->m);
|
|
}
|
|
}
|
|
free(ring->data, M_DEVBUF);
|
|
}
|
|
}
|
|
|
|
/*ARGUSED*/
|
|
static struct ieee80211_node *
|
|
wpi_node_alloc(struct ieee80211_node_table *nt __unused)
|
|
{
|
|
struct wpi_node *wn;
|
|
|
|
wn = malloc(sizeof (struct wpi_node), M_80211_NODE, M_NOWAIT | M_ZERO);
|
|
|
|
return (struct ieee80211_node *)wn;
|
|
}
|
|
|
|
static void
|
|
wpi_newassoc(struct ieee80211_node *ni, int isnew)
|
|
{
|
|
struct wpi_softc *sc = ni->ni_ic->ic_ifp->if_softc;
|
|
int i;
|
|
|
|
ieee80211_amrr_node_init(&sc->amrr, &((struct wpi_node *)ni)->amn);
|
|
|
|
/* set rate to some reasonable initial value */
|
|
for (i = ni->ni_rates.rs_nrates - 1;
|
|
i > 0 && (ni->ni_rates.rs_rates[i] & IEEE80211_RATE_VAL) > 72;
|
|
i--);
|
|
ni->ni_txrate = i;
|
|
}
|
|
|
|
static int
|
|
wpi_media_change(struct ifnet *ifp)
|
|
{
|
|
int error;
|
|
|
|
error = ieee80211_media_change(ifp);
|
|
if (error != ENETRESET)
|
|
return error;
|
|
|
|
if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING))
|
|
wpi_init(ifp);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
wpi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg)
|
|
{
|
|
struct ifnet *ifp = ic->ic_ifp;
|
|
struct wpi_softc *sc = ifp->if_softc;
|
|
struct ieee80211_node *ni;
|
|
int error;
|
|
|
|
callout_stop(&sc->calib_to);
|
|
|
|
switch (nstate) {
|
|
case IEEE80211_S_SCAN:
|
|
|
|
if (sc->is_scanning)
|
|
break;
|
|
|
|
sc->is_scanning = true;
|
|
ieee80211_node_table_reset(&ic->ic_scan);
|
|
ic->ic_flags |= IEEE80211_F_SCAN | IEEE80211_F_ASCAN;
|
|
|
|
/* make the link LED blink while we're scanning */
|
|
wpi_set_led(sc, WPI_LED_LINK, 20, 2);
|
|
|
|
if ((error = wpi_scan(sc, IEEE80211_CHAN_G)) != 0) {
|
|
aprint_error_dev(sc->sc_dev, "could not initiate scan\n");
|
|
ic->ic_flags &= ~(IEEE80211_F_SCAN | IEEE80211_F_ASCAN);
|
|
return error;
|
|
}
|
|
|
|
ic->ic_state = nstate;
|
|
return 0;
|
|
|
|
case IEEE80211_S_ASSOC:
|
|
if (ic->ic_state != IEEE80211_S_RUN)
|
|
break;
|
|
/* FALLTHROUGH */
|
|
case IEEE80211_S_AUTH:
|
|
sc->config.associd = 0;
|
|
sc->config.filter &= ~htole32(WPI_FILTER_BSS);
|
|
if ((error = wpi_auth(sc)) != 0) {
|
|
aprint_error_dev(sc->sc_dev,
|
|
"could not send authentication request\n");
|
|
return error;
|
|
}
|
|
break;
|
|
|
|
case IEEE80211_S_RUN:
|
|
if (ic->ic_opmode == IEEE80211_M_MONITOR) {
|
|
/* link LED blinks while monitoring */
|
|
wpi_set_led(sc, WPI_LED_LINK, 5, 5);
|
|
break;
|
|
}
|
|
|
|
ni = ic->ic_bss;
|
|
|
|
if (ic->ic_opmode != IEEE80211_M_STA) {
|
|
(void) wpi_auth(sc); /* XXX */
|
|
wpi_setup_beacon(sc, ni);
|
|
}
|
|
|
|
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);
|
|
if (ic->ic_opmode != IEEE80211_M_STA)
|
|
sc->config.filter |= htole32(WPI_FILTER_BEACON);
|
|
|
|
/* 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) {
|
|
aprint_error_dev(sc->sc_dev, "could not update configuration\n");
|
|
return error;
|
|
}
|
|
|
|
/* configuration has changed, set Tx power accordingly */
|
|
if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) {
|
|
aprint_error_dev(sc->sc_dev, "could not set Tx power\n");
|
|
return error;
|
|
}
|
|
|
|
if (ic->ic_opmode == IEEE80211_M_STA) {
|
|
/* fake a join to init the tx rate */
|
|
wpi_newassoc(ni, 1);
|
|
}
|
|
|
|
/* start periodic calibration timer */
|
|
sc->calib_cnt = 0;
|
|
callout_schedule(&sc->calib_to, hz/2);
|
|
|
|
/* link LED always on while associated */
|
|
wpi_set_led(sc, WPI_LED_LINK, 0, 1);
|
|
break;
|
|
|
|
case IEEE80211_S_INIT:
|
|
sc->is_scanning = false;
|
|
break;
|
|
}
|
|
|
|
return sc->sc_newstate(ic, nstate, arg);
|
|
}
|
|
|
|
/*
|
|
* XXX: Hack to set the current channel to the value advertised in beacons or
|
|
* probe responses. Only used during AP detection.
|
|
* XXX: Duplicated from if_iwi.c
|
|
*/
|
|
static void
|
|
wpi_fix_channel(struct ieee80211com *ic, struct mbuf *m)
|
|
{
|
|
struct ieee80211_frame *wh;
|
|
uint8_t subtype;
|
|
uint8_t *frm, *efrm;
|
|
|
|
wh = mtod(m, struct ieee80211_frame *);
|
|
|
|
if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT)
|
|
return;
|
|
|
|
subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
|
|
|
|
if (subtype != IEEE80211_FC0_SUBTYPE_BEACON &&
|
|
subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP)
|
|
return;
|
|
|
|
frm = (uint8_t *)(wh + 1);
|
|
efrm = mtod(m, uint8_t *) + m->m_len;
|
|
|
|
frm += 12; /* skip tstamp, bintval and capinfo fields */
|
|
while (frm < efrm) {
|
|
if (*frm == IEEE80211_ELEMID_DSPARMS)
|
|
#if IEEE80211_CHAN_MAX < 255
|
|
if (frm[2] <= IEEE80211_CHAN_MAX)
|
|
#endif
|
|
ic->ic_curchan = &ic->ic_channels[frm[2]];
|
|
|
|
frm += frm[1] + 2;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Grab exclusive access to NIC memory.
|
|
*/
|
|
static void
|
|
wpi_mem_lock(struct wpi_softc *sc)
|
|
{
|
|
uint32_t tmp;
|
|
int ntries;
|
|
|
|
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 < 1000; ntries++) {
|
|
if ((WPI_READ(sc, WPI_GPIO_CTL) &
|
|
(WPI_GPIO_CLOCK | WPI_GPIO_SLEEP)) == WPI_GPIO_CLOCK)
|
|
break;
|
|
DELAY(10);
|
|
}
|
|
if (ntries == 1000)
|
|
aprint_error_dev(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 `len' bytes from the EEPROM. We access the EEPROM through the MAC
|
|
* instead of using the traditional bit-bang method.
|
|
*/
|
|
static int
|
|
wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int len)
|
|
{
|
|
uint8_t *out = data;
|
|
uint32_t val;
|
|
int ntries;
|
|
|
|
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) {
|
|
aprint_error_dev(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 boot code is small and is intended to be copied directly into
|
|
* the NIC internal memory.
|
|
*/
|
|
int
|
|
wpi_load_microcode(struct wpi_softc *sc, const uint8_t *ucode, int size)
|
|
{
|
|
int ntries;
|
|
|
|
size /= sizeof (uint32_t);
|
|
|
|
wpi_mem_lock(sc);
|
|
|
|
/* copy microcode image into NIC memory */
|
|
wpi_mem_write_region_4(sc, WPI_MEM_UCODE_BASE,
|
|
(const uint32_t *)ucode, 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 for transfer to complete */
|
|
for (ntries = 0; ntries < 1000; ntries++) {
|
|
if (!(wpi_mem_read(sc, WPI_MEM_UCODE_CTL) & WPI_UC_RUN))
|
|
break;
|
|
DELAY(10);
|
|
}
|
|
if (ntries == 1000) {
|
|
wpi_mem_unlock(sc);
|
|
aprint_error_dev(sc->sc_dev, "could not load boot firmware\n");
|
|
return ETIMEDOUT;
|
|
}
|
|
wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_ENABLE);
|
|
|
|
wpi_mem_unlock(sc);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
wpi_cache_firmware(struct wpi_softc *sc)
|
|
{
|
|
firmware_handle_t fw;
|
|
int error;
|
|
|
|
if (sc->fw_used)
|
|
return 0;
|
|
|
|
mutex_enter(&wpi_firmware_mutex);
|
|
if (wpi_firmware_users++) {
|
|
mutex_exit(&wpi_firmware_mutex);
|
|
return 0;
|
|
}
|
|
|
|
/* load firmware image from disk */
|
|
if ((error = firmware_open("if_wpi","iwlwifi-3945.ucode", &fw)) != 0) {
|
|
aprint_error_dev(sc->sc_dev, "could not read firmware file\n");
|
|
goto fail1;
|
|
}
|
|
|
|
wpi_firmware_size = firmware_get_size(fw);
|
|
|
|
if (wpi_firmware_size > sizeof (struct wpi_firmware_hdr) +
|
|
WPI_FW_MAIN_TEXT_MAXSZ + WPI_FW_MAIN_DATA_MAXSZ +
|
|
WPI_FW_INIT_TEXT_MAXSZ + WPI_FW_INIT_DATA_MAXSZ +
|
|
WPI_FW_BOOT_TEXT_MAXSZ) {
|
|
aprint_error_dev(sc->sc_dev, "invalid firmware file\n");
|
|
error = EFBIG;
|
|
goto fail1;
|
|
}
|
|
|
|
if (wpi_firmware_size < sizeof (struct wpi_firmware_hdr)) {
|
|
aprint_error_dev(sc->sc_dev,
|
|
"truncated firmware header: %zu bytes\n",
|
|
wpi_firmware_size);
|
|
error = EINVAL;
|
|
goto fail2;
|
|
}
|
|
|
|
wpi_firmware_image = firmware_malloc(wpi_firmware_size);
|
|
if (wpi_firmware_image == NULL) {
|
|
aprint_error_dev(sc->sc_dev, "not enough memory to stock firmware\n");
|
|
error = ENOMEM;
|
|
goto fail1;
|
|
}
|
|
|
|
if ((error = firmware_read(fw, 0, wpi_firmware_image, wpi_firmware_size)) != 0) {
|
|
aprint_error_dev(sc->sc_dev, "can't get firmware\n");
|
|
goto fail2;
|
|
}
|
|
|
|
sc->fw_used = true;
|
|
firmware_close(fw);
|
|
mutex_exit(&wpi_firmware_mutex);
|
|
|
|
return 0;
|
|
|
|
fail2:
|
|
firmware_free(wpi_firmware_image, wpi_firmware_size);
|
|
fail1:
|
|
firmware_close(fw);
|
|
if (--wpi_firmware_users == 0)
|
|
firmware_free(wpi_firmware_image, wpi_firmware_size);
|
|
mutex_exit(&wpi_firmware_mutex);
|
|
return error;
|
|
}
|
|
|
|
static int
|
|
wpi_load_firmware(struct wpi_softc *sc)
|
|
{
|
|
struct wpi_dma_info *dma = &sc->fw_dma;
|
|
struct wpi_firmware_hdr hdr;
|
|
const uint8_t *init_text, *init_data, *main_text, *main_data;
|
|
const uint8_t *boot_text;
|
|
uint32_t init_textsz, init_datasz, main_textsz, main_datasz;
|
|
uint32_t boot_textsz;
|
|
int error;
|
|
|
|
if ((error = wpi_cache_firmware(sc)) != 0)
|
|
return error;
|
|
|
|
memcpy(&hdr, wpi_firmware_image, sizeof(hdr));
|
|
|
|
main_textsz = le32toh(hdr.main_textsz);
|
|
main_datasz = le32toh(hdr.main_datasz);
|
|
init_textsz = le32toh(hdr.init_textsz);
|
|
init_datasz = le32toh(hdr.init_datasz);
|
|
boot_textsz = le32toh(hdr.boot_textsz);
|
|
|
|
/* sanity-check firmware segments sizes */
|
|
if (main_textsz > WPI_FW_MAIN_TEXT_MAXSZ ||
|
|
main_datasz > WPI_FW_MAIN_DATA_MAXSZ ||
|
|
init_textsz > WPI_FW_INIT_TEXT_MAXSZ ||
|
|
init_datasz > WPI_FW_INIT_DATA_MAXSZ ||
|
|
boot_textsz > WPI_FW_BOOT_TEXT_MAXSZ ||
|
|
(boot_textsz & 3) != 0) {
|
|
aprint_error_dev(sc->sc_dev, "invalid firmware header\n");
|
|
error = EINVAL;
|
|
goto free_firmware;
|
|
}
|
|
|
|
/* check that all firmware segments are present */
|
|
if (wpi_firmware_size <
|
|
sizeof (struct wpi_firmware_hdr) + main_textsz +
|
|
main_datasz + init_textsz + init_datasz + boot_textsz) {
|
|
aprint_error_dev(sc->sc_dev,
|
|
"firmware file too short: %zu bytes\n", wpi_firmware_size);
|
|
error = EINVAL;
|
|
goto free_firmware;
|
|
}
|
|
|
|
/* get pointers to firmware segments */
|
|
main_text = wpi_firmware_image + sizeof (struct wpi_firmware_hdr);
|
|
main_data = main_text + main_textsz;
|
|
init_text = main_data + main_datasz;
|
|
init_data = init_text + init_textsz;
|
|
boot_text = init_data + init_datasz;
|
|
|
|
/* copy initialization images into pre-allocated DMA-safe memory */
|
|
memcpy(dma->vaddr, init_data, init_datasz);
|
|
memcpy((char*)dma->vaddr + WPI_FW_INIT_DATA_MAXSZ, init_text, init_textsz);
|
|
|
|
/* 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, init_datasz);
|
|
wpi_mem_write(sc, WPI_MEM_TEXT_BASE,
|
|
dma->paddr + WPI_FW_INIT_DATA_MAXSZ);
|
|
wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, init_textsz);
|
|
wpi_mem_unlock(sc);
|
|
|
|
/* load firmware boot code */
|
|
if ((error = wpi_load_microcode(sc, boot_text, boot_textsz)) != 0) {
|
|
aprint_error_dev(sc->sc_dev, "could not load boot firmware\n");
|
|
return error;
|
|
}
|
|
|
|
/* now press "execute" ;-) */
|
|
WPI_WRITE(sc, WPI_RESET, 0);
|
|
|
|
/* ..and wait at most one second for adapter to initialize */
|
|
if ((error = tsleep(sc, PCATCH, "wpiinit", hz)) != 0) {
|
|
/* this isn't what was supposed to happen.. */
|
|
aprint_error_dev(sc->sc_dev,
|
|
"timeout waiting for adapter to initialize\n");
|
|
}
|
|
|
|
/* copy runtime images into pre-allocated DMA-safe memory */
|
|
memcpy(dma->vaddr, main_data, main_datasz);
|
|
memcpy((char*)dma->vaddr + WPI_FW_MAIN_DATA_MAXSZ, main_text, main_textsz);
|
|
|
|
/* 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, main_datasz);
|
|
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 | main_textsz);
|
|
wpi_mem_unlock(sc);
|
|
|
|
/* wait at most one second for second alive notification */
|
|
if ((error = tsleep(sc, PCATCH, "wpiinit", hz)) != 0) {
|
|
/* this isn't what was supposed to happen.. */
|
|
aprint_error_dev(sc->sc_dev,
|
|
"timeout waiting for adapter to initialize\n");
|
|
}
|
|
|
|
return error;
|
|
|
|
free_firmware:
|
|
mutex_enter(&wpi_firmware_mutex);
|
|
sc->fw_used = false;
|
|
--wpi_firmware_users;
|
|
mutex_exit(&wpi_firmware_mutex);
|
|
return error;
|
|
}
|
|
|
|
static void
|
|
wpi_calib_timeout(void *arg)
|
|
{
|
|
struct wpi_softc *sc = arg;
|
|
struct ieee80211com *ic = &sc->sc_ic;
|
|
int temp, s;
|
|
|
|
/* automatic rate control triggered every 500ms */
|
|
if (ic->ic_fixed_rate == -1) {
|
|
s = splnet();
|
|
if (ic->ic_opmode == IEEE80211_M_STA)
|
|
wpi_iter_func(sc, ic->ic_bss);
|
|
else
|
|
ieee80211_iterate_nodes(&ic->ic_sta, wpi_iter_func, sc);
|
|
splx(s);
|
|
}
|
|
|
|
/* update sensor data */
|
|
temp = (int)WPI_READ(sc, WPI_TEMPERATURE);
|
|
|
|
/* automatic power calibration every 60s */
|
|
if (++sc->calib_cnt >= 120) {
|
|
wpi_power_calibration(sc, temp);
|
|
sc->calib_cnt = 0;
|
|
}
|
|
|
|
callout_schedule(&sc->calib_to, hz/2);
|
|
}
|
|
|
|
static void
|
|
wpi_iter_func(void *arg, struct ieee80211_node *ni)
|
|
{
|
|
struct wpi_softc *sc = arg;
|
|
struct wpi_node *wn = (struct wpi_node *)ni;
|
|
|
|
ieee80211_amrr_choose(&sc->amrr, ni, &wn->amn);
|
|
}
|
|
|
|
/*
|
|
* This function is called periodically (every 60 seconds) to adjust output
|
|
* power to temperature changes.
|
|
*/
|
|
void
|
|
wpi_power_calibration(struct wpi_softc *sc, int temp)
|
|
{
|
|
/* sanity-check read value */
|
|
if (temp < -260 || temp > 25) {
|
|
/* this can't be correct, ignore */
|
|
DPRINTF(("out-of-range temperature reported: %d\n", temp));
|
|
return;
|
|
}
|
|
|
|
DPRINTF(("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, sc->sc_ic.ic_bss->ni_chan, 1) != 0) {
|
|
/* just warn, too bad for the automatic calibration... */
|
|
aprint_error_dev(sc->sc_dev, "could not adjust Tx power\n");
|
|
}
|
|
}
|
|
|
|
static void
|
|
wpi_rx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc,
|
|
struct wpi_rx_data *data)
|
|
{
|
|
struct ieee80211com *ic = &sc->sc_ic;
|
|
struct ifnet *ifp = ic->ic_ifp;
|
|
struct wpi_rx_ring *ring = &sc->rxq;
|
|
struct wpi_rx_stat *stat;
|
|
struct wpi_rx_head *head;
|
|
struct wpi_rx_tail *tail;
|
|
struct wpi_rbuf *rbuf;
|
|
struct ieee80211_frame *wh;
|
|
struct ieee80211_node *ni;
|
|
struct mbuf *m, *mnew;
|
|
int data_off ;
|
|
|
|
stat = (struct wpi_rx_stat *)(desc + 1);
|
|
|
|
if (stat->len > WPI_STAT_MAXLEN) {
|
|
aprint_error_dev(sc->sc_dev, "invalid rx statistic header\n");
|
|
ifp->if_ierrors++;
|
|
return;
|
|
}
|
|
|
|
head = (struct wpi_rx_head *)((char *)(stat + 1) + stat->len);
|
|
tail = (struct wpi_rx_tail *)((char *)(head + 1) + le16toh(head->len));
|
|
|
|
DPRINTFN(4, ("rx intr: idx=%d len=%d stat len=%d rssi=%d rate=%x "
|
|
"chan=%d tstamp=%" PRId64 "\n", ring->cur, le32toh(desc->len),
|
|
le16toh(head->len), (int8_t)stat->rssi, head->rate, head->chan,
|
|
le64toh(tail->tstamp)));
|
|
|
|
/*
|
|
* Discard Rx frames with bad CRC early (XXX we may want to pass them
|
|
* to radiotap in monitor mode).
|
|
*/
|
|
if ((le32toh(tail->flags) & WPI_RX_NOERROR) != WPI_RX_NOERROR) {
|
|
DPRINTF(("rx tail flags error %x\n", le32toh(tail->flags)));
|
|
ifp->if_ierrors++;
|
|
return;
|
|
}
|
|
|
|
/* Compute where are the useful datas */
|
|
data_off = (char*)(head + 1) - mtod(data->m, char*);
|
|
|
|
/*
|
|
* If the number of free entry is too low
|
|
* just dup the data->m socket and reuse the same rbuf entry
|
|
* Note that thi test is not protected by a mutex because the
|
|
* only path that causes nb_free_entries to decrease is through
|
|
* this interrupt routine, which is not re-entrent.
|
|
* What may not be obvious is that the safe path is if that test
|
|
* evaluates as true, so nb_free_entries can grow any time.
|
|
*/
|
|
if (sc->rxq.nb_free_entries <= WPI_RBUF_LOW_LIMIT) {
|
|
|
|
/* Prepare the mbuf for the m_dup */
|
|
data->m->m_pkthdr.len = data->m->m_len = le16toh(head->len);
|
|
data->m->m_data = (char*) data->m->m_data + data_off;
|
|
|
|
m = m_dup(data->m,0,M_COPYALL,M_DONTWAIT);
|
|
|
|
/* Restore the m_data pointer for future use */
|
|
data->m->m_data = (char*) data->m->m_data - data_off;
|
|
|
|
if (m == NULL) {
|
|
ifp->if_ierrors++;
|
|
return;
|
|
}
|
|
} else {
|
|
|
|
MGETHDR(mnew, M_DONTWAIT, MT_DATA);
|
|
if (mnew == NULL) {
|
|
ifp->if_ierrors++;
|
|
return;
|
|
}
|
|
|
|
rbuf = wpi_alloc_rbuf(sc);
|
|
KASSERT(rbuf != NULL);
|
|
|
|
/* attach Rx buffer to mbuf */
|
|
MEXTADD(mnew, rbuf->vaddr, WPI_RBUF_SIZE, 0, wpi_free_rbuf,
|
|
rbuf);
|
|
mnew->m_flags |= M_EXT_RW;
|
|
|
|
m = data->m;
|
|
data->m = mnew;
|
|
|
|
/* update Rx descriptor */
|
|
ring->desc[ring->cur] = htole32(rbuf->paddr);
|
|
|
|
m->m_data = (char*)m->m_data + data_off;
|
|
m->m_pkthdr.len = m->m_len = le16toh(head->len);
|
|
}
|
|
|
|
/* finalize mbuf */
|
|
m->m_pkthdr.rcvif = ifp;
|
|
|
|
if (ic->ic_state == IEEE80211_S_SCAN)
|
|
wpi_fix_channel(ic, m);
|
|
|
|
if (sc->sc_drvbpf != NULL) {
|
|
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;
|
|
|
|
bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m);
|
|
}
|
|
|
|
/* grab a reference to the source node */
|
|
wh = mtod(m, struct ieee80211_frame *);
|
|
ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh);
|
|
|
|
/* send the frame to the 802.11 layer */
|
|
ieee80211_input(ic, m, ni, stat->rssi, 0);
|
|
|
|
/* release node reference */
|
|
ieee80211_free_node(ni);
|
|
}
|
|
|
|
static void
|
|
wpi_tx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc)
|
|
{
|
|
struct ifnet *ifp = sc->sc_ic.ic_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 wpi_node *wn = (struct wpi_node *)txdata->ni;
|
|
|
|
DPRINTFN(4, ("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.
|
|
*/
|
|
wn->amn.amn_txcnt++;
|
|
if (stat->ntries > 0) {
|
|
DPRINTFN(3, ("tx intr ntries %d\n", stat->ntries));
|
|
wn->amn.amn_retrycnt++;
|
|
}
|
|
|
|
if ((le32toh(stat->status) & 0xff) != 1)
|
|
ifp->if_oerrors++;
|
|
else
|
|
ifp->if_opackets++;
|
|
|
|
bus_dmamap_unload(sc->sc_dmat, txdata->map);
|
|
m_freem(txdata->m);
|
|
txdata->m = NULL;
|
|
ieee80211_free_node(txdata->ni);
|
|
txdata->ni = NULL;
|
|
|
|
ring->queued--;
|
|
|
|
sc->sc_tx_timer = 0;
|
|
ifp->if_flags &= ~IFF_OACTIVE;
|
|
wpi_start(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;
|
|
|
|
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(sc->sc_dmat, data->map);
|
|
m_freem(data->m);
|
|
data->m = NULL;
|
|
}
|
|
|
|
wakeup(&ring->cmd[desc->idx]);
|
|
}
|
|
|
|
static void
|
|
wpi_notif_intr(struct wpi_softc *sc)
|
|
{
|
|
struct ieee80211com *ic = &sc->sc_ic;
|
|
struct ifnet *ifp = ic->ic_ifp;
|
|
struct wpi_rx_desc *desc;
|
|
struct wpi_rx_data *data;
|
|
uint32_t hw;
|
|
|
|
hw = le32toh(sc->shared->next);
|
|
while (sc->rxq.cur != hw) {
|
|
data = &sc->rxq.data[sc->rxq.cur];
|
|
|
|
desc = mtod(data->m, struct wpi_rx_desc *);
|
|
|
|
DPRINTFN(4, ("rx notification 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) {
|
|
aprint_error_dev(sc->sc_dev,
|
|
"microcontroller initialization failed\n");
|
|
}
|
|
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) {
|
|
/* the radio button has to be pushed */
|
|
aprint_error_dev(sc->sc_dev, "Radio transmitter is off\n");
|
|
/* turn the interface down */
|
|
ifp->if_flags &= ~IFF_UP;
|
|
wpi_stop(ifp, 1);
|
|
return; /* no further processing */
|
|
}
|
|
break;
|
|
}
|
|
case WPI_START_SCAN:
|
|
{
|
|
struct wpi_start_scan *scan =
|
|
(struct wpi_start_scan *)(desc + 1);
|
|
|
|
DPRINTFN(2, ("scanning channel %d status %x\n",
|
|
scan->chan, le32toh(scan->status)));
|
|
|
|
/* fix current channel */
|
|
ic->ic_bss->ni_chan = &ic->ic_channels[scan->chan];
|
|
break;
|
|
}
|
|
case WPI_STOP_SCAN:
|
|
{
|
|
struct wpi_stop_scan *scan =
|
|
(struct wpi_stop_scan *)(desc + 1);
|
|
|
|
DPRINTF(("scan finished nchan=%d status=%d chan=%d\n",
|
|
scan->nchan, scan->status, scan->chan));
|
|
|
|
if (scan->status == 1 && scan->chan <= 14) {
|
|
/*
|
|
* We just finished scanning 802.11g channels,
|
|
* start scanning 802.11a ones.
|
|
*/
|
|
if (wpi_scan(sc, IEEE80211_CHAN_A) == 0)
|
|
break;
|
|
}
|
|
sc->is_scanning = false;
|
|
ieee80211_end_scan(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 int
|
|
wpi_intr(void *arg)
|
|
{
|
|
struct wpi_softc *sc = arg;
|
|
struct ifnet *ifp = sc->sc_ic.ic_ifp;
|
|
uint32_t r;
|
|
|
|
r = WPI_READ(sc, WPI_INTR);
|
|
if (r == 0 || r == 0xffffffff)
|
|
return 0; /* not for us */
|
|
|
|
DPRINTFN(5, ("interrupt reg %x\n", r));
|
|
|
|
/* disable interrupts */
|
|
WPI_WRITE(sc, WPI_MASK, 0);
|
|
/* ack interrupts */
|
|
WPI_WRITE(sc, WPI_INTR, r);
|
|
|
|
if (r & (WPI_SW_ERROR | WPI_HW_ERROR)) {
|
|
aprint_error_dev(sc->sc_dev, "fatal firmware error\n");
|
|
sc->sc_ic.ic_ifp->if_flags &= ~IFF_UP;
|
|
wpi_stop(sc->sc_ic.ic_ifp, 1);
|
|
return 1;
|
|
}
|
|
|
|
if (r & WPI_RX_INTR)
|
|
wpi_notif_intr(sc);
|
|
|
|
if (r & WPI_ALIVE_INTR) /* firmware initialized */
|
|
wakeup(sc);
|
|
|
|
/* re-enable interrupts */
|
|
if (ifp->if_flags & IFF_UP)
|
|
WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK);
|
|
|
|
return 1;
|
|
}
|
|
|
|
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, (u)ral 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)
|
|
|
|
static int
|
|
wpi_tx_data(struct wpi_softc *sc, struct mbuf *m0, struct ieee80211_node *ni,
|
|
int ac)
|
|
{
|
|
struct ieee80211com *ic = &sc->sc_ic;
|
|
struct wpi_tx_ring *ring = &sc->txq[ac];
|
|
struct wpi_tx_desc *desc;
|
|
struct wpi_tx_data *data;
|
|
struct wpi_tx_cmd *cmd;
|
|
struct wpi_cmd_data *tx;
|
|
struct ieee80211_frame *wh;
|
|
struct ieee80211_key *k;
|
|
const struct chanAccParams *cap;
|
|
struct mbuf *mnew;
|
|
int i, error, rate, hdrlen, noack = 0;
|
|
|
|
desc = &ring->desc[ring->cur];
|
|
data = &ring->data[ring->cur];
|
|
|
|
wh = mtod(m0, struct ieee80211_frame *);
|
|
|
|
if (IEEE80211_QOS_HAS_SEQ(wh)) {
|
|
cap = &ic->ic_wme.wme_chanParams;
|
|
noack = cap->cap_wmeParams[ac].wmep_noackPolicy;
|
|
}
|
|
|
|
if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
|
|
k = ieee80211_crypto_encap(ic, 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 *);
|
|
}
|
|
|
|
hdrlen = ieee80211_anyhdrsize(wh);
|
|
|
|
/* pickup a rate */
|
|
if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) ==
|
|
IEEE80211_FC0_TYPE_MGT) {
|
|
/* mgmt frames are sent at the lowest available bit-rate */
|
|
rate = ni->ni_rates.rs_rates[0];
|
|
} else {
|
|
if (ic->ic_fixed_rate != -1) {
|
|
rate = ic->ic_sup_rates[ic->ic_curmode].
|
|
rs_rates[ic->ic_fixed_rate];
|
|
} else
|
|
rate = ni->ni_rates.rs_rates[ni->ni_txrate];
|
|
}
|
|
rate &= IEEE80211_RATE_VAL;
|
|
|
|
|
|
if (sc->sc_drvbpf != NULL) {
|
|
struct wpi_tx_radiotap_header *tap = &sc->sc_txtap;
|
|
|
|
tap->wt_flags = 0;
|
|
tap->wt_chan_freq = htole16(ni->ni_chan->ic_freq);
|
|
tap->wt_chan_flags = htole16(ni->ni_chan->ic_flags);
|
|
tap->wt_rate = rate;
|
|
tap->wt_hwqueue = ac;
|
|
if (wh->i_fc[1] & IEEE80211_FC1_WEP)
|
|
tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP;
|
|
|
|
bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0);
|
|
}
|
|
|
|
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 = 0;
|
|
|
|
if (!noack && !IEEE80211_IS_MULTICAST(wh->i_addr1)) {
|
|
tx->flags |= htole32(WPI_TX_NEED_ACK);
|
|
} else if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > ic->ic_rtsthreshold)
|
|
tx->flags |= htole32(WPI_TX_NEED_RTS | WPI_TX_FULL_TXOP);
|
|
|
|
tx->flags |= htole32(WPI_TX_AUTO_SEQ);
|
|
|
|
/* retrieve destination node's id */
|
|
tx->id = IEEE80211_IS_MULTICAST(wh->i_addr1) ? WPI_ID_BROADCAST :
|
|
WPI_ID_BSS;
|
|
|
|
if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) ==
|
|
IEEE80211_FC0_TYPE_MGT) {
|
|
/* tell h/w to set timestamp in probe responses */
|
|
if ((wh->i_fc[0] &
|
|
(IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) ==
|
|
(IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP))
|
|
tx->flags |= htole32(WPI_TX_INSERT_TSTAMP);
|
|
|
|
if (((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) ==
|
|
IEEE80211_FC0_SUBTYPE_ASSOC_REQ) ||
|
|
((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) ==
|
|
IEEE80211_FC0_SUBTYPE_REASSOC_REQ))
|
|
tx->timeout = htole16(3);
|
|
else
|
|
tx->timeout = htole16(2);
|
|
} else
|
|
tx->timeout = htole16(0);
|
|
|
|
tx->rate = wpi_plcp_signal(rate);
|
|
|
|
/* be very persistant at sending frames out */
|
|
tx->rts_ntries = 7;
|
|
tx->data_ntries = 15;
|
|
|
|
tx->ofdm_mask = 0xff;
|
|
tx->cck_mask = 0xf;
|
|
tx->lifetime = htole32(WPI_LIFETIME_INFINITE);
|
|
|
|
tx->len = htole16(m0->m_pkthdr.len);
|
|
|
|
/* save and trim IEEE802.11 header */
|
|
memcpy((uint8_t *)(tx + 1), wh, hdrlen);
|
|
m_adj(m0, hdrlen);
|
|
|
|
error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0,
|
|
BUS_DMA_WRITE | BUS_DMA_NOWAIT);
|
|
if (error != 0 && error != EFBIG) {
|
|
aprint_error_dev(sc->sc_dev, "could not map mbuf (error %d)\n", error);
|
|
m_freem(m0);
|
|
return error;
|
|
}
|
|
if (error != 0) {
|
|
/* too many fragments, linearize */
|
|
MGETHDR(mnew, M_DONTWAIT, MT_DATA);
|
|
if (mnew == NULL) {
|
|
m_freem(m0);
|
|
return ENOMEM;
|
|
}
|
|
|
|
M_COPY_PKTHDR(mnew, m0);
|
|
if (m0->m_pkthdr.len > MHLEN) {
|
|
MCLGET(mnew, M_DONTWAIT);
|
|
if (!(mnew->m_flags & M_EXT)) {
|
|
m_freem(m0);
|
|
m_freem(mnew);
|
|
return ENOMEM;
|
|
}
|
|
}
|
|
|
|
m_copydata(m0, 0, m0->m_pkthdr.len, mtod(mnew, void *));
|
|
m_freem(m0);
|
|
mnew->m_len = mnew->m_pkthdr.len;
|
|
m0 = mnew;
|
|
|
|
error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0,
|
|
BUS_DMA_WRITE | BUS_DMA_NOWAIT);
|
|
if (error != 0) {
|
|
aprint_error_dev(sc->sc_dev, "could not map mbuf (error %d)\n",
|
|
error);
|
|
m_freem(m0);
|
|
return error;
|
|
}
|
|
}
|
|
|
|
data->m = m0;
|
|
data->ni = ni;
|
|
|
|
DPRINTFN(4, ("sending data: qid=%d idx=%d len=%d nsegs=%d\n",
|
|
ring->qid, ring->cur, m0->m_pkthdr.len, data->map->dm_nsegs));
|
|
|
|
/* first scatter/gather segment is used by the tx data command */
|
|
desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 |
|
|
(1 + data->map->dm_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) +
|
|
((hdrlen + 3) & ~3));
|
|
|
|
for (i = 1; i <= data->map->dm_nsegs; i++) {
|
|
desc->segs[i].addr =
|
|
htole32(data->map->dm_segs[i - 1].ds_addr);
|
|
desc->segs[i].len =
|
|
htole32(data->map->dm_segs[i - 1].ds_len);
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
static void
|
|
wpi_start(struct ifnet *ifp)
|
|
{
|
|
struct wpi_softc *sc = ifp->if_softc;
|
|
struct ieee80211com *ic = &sc->sc_ic;
|
|
struct ieee80211_node *ni;
|
|
struct ether_header *eh;
|
|
struct mbuf *m0;
|
|
int ac;
|
|
|
|
/*
|
|
* net80211 may still try to send management frames even if the
|
|
* IFF_RUNNING flag is not set...
|
|
*/
|
|
if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING)
|
|
return;
|
|
|
|
for (;;) {
|
|
IF_DEQUEUE(&ic->ic_mgtq, m0);
|
|
if (m0 != NULL) {
|
|
|
|
ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif;
|
|
m0->m_pkthdr.rcvif = NULL;
|
|
|
|
/* management frames go into ring 0 */
|
|
if (sc->txq[0].queued > sc->txq[0].count - 8) {
|
|
ifp->if_oerrors++;
|
|
continue;
|
|
}
|
|
bpf_mtap3(ic->ic_rawbpf, m0);
|
|
if (wpi_tx_data(sc, m0, ni, 0) != 0) {
|
|
ifp->if_oerrors++;
|
|
break;
|
|
}
|
|
} else {
|
|
if (ic->ic_state != IEEE80211_S_RUN)
|
|
break;
|
|
IFQ_POLL(&ifp->if_snd, m0);
|
|
if (m0 == NULL)
|
|
break;
|
|
|
|
if (m0->m_len < sizeof (*eh) &&
|
|
(m0 = m_pullup(m0, sizeof (*eh))) == NULL) {
|
|
ifp->if_oerrors++;
|
|
continue;
|
|
}
|
|
eh = mtod(m0, struct ether_header *);
|
|
ni = ieee80211_find_txnode(ic, eh->ether_dhost);
|
|
if (ni == NULL) {
|
|
m_freem(m0);
|
|
ifp->if_oerrors++;
|
|
continue;
|
|
}
|
|
|
|
/* classify mbuf so we can find which tx ring to use */
|
|
if (ieee80211_classify(ic, m0, ni) != 0) {
|
|
m_freem(m0);
|
|
ieee80211_free_node(ni);
|
|
ifp->if_oerrors++;
|
|
continue;
|
|
}
|
|
|
|
/* no QoS encapsulation for EAPOL frames */
|
|
ac = (eh->ether_type != htons(ETHERTYPE_PAE)) ?
|
|
M_WME_GETAC(m0) : WME_AC_BE;
|
|
|
|
if (sc->txq[ac].queued > sc->txq[ac].count - 8) {
|
|
/* there is no place left in this ring */
|
|
ifp->if_flags |= IFF_OACTIVE;
|
|
break;
|
|
}
|
|
IFQ_DEQUEUE(&ifp->if_snd, m0);
|
|
bpf_mtap(ifp, m0);
|
|
m0 = ieee80211_encap(ic, m0, ni);
|
|
if (m0 == NULL) {
|
|
ieee80211_free_node(ni);
|
|
ifp->if_oerrors++;
|
|
continue;
|
|
}
|
|
bpf_mtap3(ic->ic_rawbpf, m0);
|
|
if (wpi_tx_data(sc, m0, ni, ac) != 0) {
|
|
ieee80211_free_node(ni);
|
|
ifp->if_oerrors++;
|
|
break;
|
|
}
|
|
}
|
|
|
|
sc->sc_tx_timer = 5;
|
|
ifp->if_timer = 1;
|
|
}
|
|
}
|
|
|
|
static void
|
|
wpi_watchdog(struct ifnet *ifp)
|
|
{
|
|
struct wpi_softc *sc = ifp->if_softc;
|
|
|
|
ifp->if_timer = 0;
|
|
|
|
if (sc->sc_tx_timer > 0) {
|
|
if (--sc->sc_tx_timer == 0) {
|
|
aprint_error_dev(sc->sc_dev, "device timeout\n");
|
|
ifp->if_oerrors++;
|
|
ifp->if_flags &= ~IFF_UP;
|
|
wpi_stop(ifp, 1);
|
|
return;
|
|
}
|
|
ifp->if_timer = 1;
|
|
}
|
|
|
|
ieee80211_watchdog(&sc->sc_ic);
|
|
}
|
|
|
|
static int
|
|
wpi_ioctl(struct ifnet *ifp, u_long cmd, void *data)
|
|
{
|
|
#define IS_RUNNING(ifp) \
|
|
((ifp->if_flags & IFF_UP) && (ifp->if_flags & IFF_RUNNING))
|
|
|
|
struct wpi_softc *sc = ifp->if_softc;
|
|
struct ieee80211com *ic = &sc->sc_ic;
|
|
int s, error = 0;
|
|
|
|
s = splnet();
|
|
|
|
switch (cmd) {
|
|
case SIOCSIFFLAGS:
|
|
if ((error = ifioctl_common(ifp, cmd, data)) != 0)
|
|
break;
|
|
if (ifp->if_flags & IFF_UP) {
|
|
if (!(ifp->if_flags & IFF_RUNNING))
|
|
wpi_init(ifp);
|
|
} else {
|
|
if (ifp->if_flags & IFF_RUNNING)
|
|
wpi_stop(ifp, 1);
|
|
}
|
|
break;
|
|
|
|
case SIOCADDMULTI:
|
|
case SIOCDELMULTI:
|
|
/* XXX no h/w multicast filter? --dyoung */
|
|
if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) {
|
|
/* setup multicast filter, etc */
|
|
error = 0;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
error = ieee80211_ioctl(ic, cmd, data);
|
|
}
|
|
|
|
if (error == ENETRESET) {
|
|
if (IS_RUNNING(ifp) &&
|
|
(ic->ic_roaming != IEEE80211_ROAMING_MANUAL))
|
|
wpi_init(ifp);
|
|
error = 0;
|
|
}
|
|
|
|
splx(s);
|
|
return error;
|
|
|
|
#undef IS_RUNNING
|
|
}
|
|
|
|
/*
|
|
* Extract various information from EEPROM.
|
|
*/
|
|
static void
|
|
wpi_read_eeprom(struct wpi_softc *sc)
|
|
{
|
|
struct ieee80211com *ic = &sc->sc_ic;
|
|
char domain[4];
|
|
int i;
|
|
|
|
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);
|
|
|
|
DPRINTF(("cap=%x rev=%x type=%x\n", sc->cap, le16toh(sc->rev),
|
|
sc->type));
|
|
|
|
/* read and print regulatory domain */
|
|
wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, domain, 4);
|
|
aprint_normal_dev(sc->sc_dev, "%.4s", domain);
|
|
|
|
/* read and print MAC address */
|
|
wpi_read_prom_data(sc, WPI_EEPROM_MAC, ic->ic_myaddr, 6);
|
|
aprint_normal(", address %s\n", ether_sprintf(ic->ic_myaddr));
|
|
|
|
/* read the list of authorized channels */
|
|
for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++)
|
|
wpi_read_eeprom_channels(sc, i);
|
|
|
|
/* read the list of power groups */
|
|
for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++)
|
|
wpi_read_eeprom_group(sc, i);
|
|
}
|
|
|
|
static void
|
|
wpi_read_eeprom_channels(struct wpi_softc *sc, int n)
|
|
{
|
|
struct ieee80211com *ic = &sc->sc_ic;
|
|
const struct wpi_chan_band *band = &wpi_bands[n];
|
|
struct wpi_eeprom_chan channels[WPI_MAX_CHAN_PER_BAND];
|
|
int chan, i;
|
|
|
|
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))
|
|
continue;
|
|
|
|
chan = band->chan[i];
|
|
|
|
if (n == 0) { /* 2GHz band */
|
|
ic->ic_channels[chan].ic_freq =
|
|
ieee80211_ieee2mhz(chan, IEEE80211_CHAN_2GHZ);
|
|
ic->ic_channels[chan].ic_flags =
|
|
IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM |
|
|
IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ;
|
|
|
|
} 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.
|
|
*/
|
|
if (chan <= 14)
|
|
continue;
|
|
|
|
ic->ic_channels[chan].ic_freq =
|
|
ieee80211_ieee2mhz(chan, IEEE80211_CHAN_5GHZ);
|
|
ic->ic_channels[chan].ic_flags = IEEE80211_CHAN_A;
|
|
}
|
|
|
|
/* is active scan allowed on this channel? */
|
|
if (!(channels[i].flags & WPI_EEPROM_CHAN_ACTIVE)) {
|
|
ic->ic_channels[chan].ic_flags |=
|
|
IEEE80211_CHAN_PASSIVE;
|
|
}
|
|
|
|
/* save maximum allowed power for this channel */
|
|
sc->maxpwr[chan] = channels[i].maxpwr;
|
|
|
|
DPRINTF(("adding chan %d flags=0x%x maxpwr=%d\n",
|
|
chan, channels[i].flags, sc->maxpwr[chan]));
|
|
}
|
|
}
|
|
|
|
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));
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 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;
|
|
|
|
KASSERT(size <= sizeof cmd->data);
|
|
|
|
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);
|
|
|
|
return async ? 0 : tsleep(cmd, 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 ieee80211com *ic = &sc->sc_ic;
|
|
struct wpi_mrr_setup mrr;
|
|
int i, error;
|
|
|
|
/* CCK rates (not used with 802.11a) */
|
|
for (i = WPI_CCK1; i <= WPI_CCK11; i++) {
|
|
mrr.rates[i].flags = 0;
|
|
mrr.rates[i].plcp = wpi_ridx_to_plcp[i];
|
|
/* fallback to the immediate lower CCK rate (if any) */
|
|
mrr.rates[i].next = (i == WPI_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].plcp = wpi_ridx_to_plcp[i];
|
|
/* fallback to the immediate lower rate (if any) */
|
|
/* we allow fallback from OFDM/6 to CCK/2 in 11b/g mode */
|
|
mrr.rates[i].next = (i == WPI_OFDM6) ?
|
|
((ic->ic_curmode == IEEE80211_MODE_11A) ?
|
|
WPI_OFDM6 : WPI_CCK2) :
|
|
i - 1;
|
|
/* try one time at this rate before falling back to "next" */
|
|
mrr.rates[i].ntries = 1;
|
|
}
|
|
|
|
/* setup MRR for control frames */
|
|
mrr.which = htole32(WPI_MRR_CTL);
|
|
error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0);
|
|
if (error != 0) {
|
|
aprint_error_dev(sc->sc_dev, "could not setup MRR for control frames\n");
|
|
return error;
|
|
}
|
|
|
|
/* setup MRR for data frames */
|
|
mrr.which = htole32(WPI_MRR_DATA);
|
|
error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0);
|
|
if (error != 0) {
|
|
aprint_error_dev(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; /* msecs -> usecs */
|
|
mod = le64toh(tsf.tstamp) % val;
|
|
tsf.binitval = htole32((uint32_t)(val - mod));
|
|
|
|
DPRINTF(("TSF bintval=%u tstamp=%" PRId64 ", init=%u\n",
|
|
ni->ni_intval, le64toh(tsf.tstamp), (uint32_t)(val - mod)));
|
|
|
|
if (wpi_cmd(sc, WPI_CMD_TSF, &tsf, sizeof tsf, 1) != 0)
|
|
aprint_error_dev(sc->sc_dev, "could not enable TSF\n");
|
|
}
|
|
|
|
/*
|
|
* 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 ieee80211com *ic = &sc->sc_ic;
|
|
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.chan = 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].plcp = wpi_ridx_to_plcp[i];
|
|
|
|
if (IEEE80211_IS_CHAN_5GHZ(c)) {
|
|
txpower.rates[i].rf_gain = wpi_rf_gain_5ghz[idx];
|
|
txpower.rates[i].dsp_gain = wpi_dsp_gain_5ghz[idx];
|
|
} else {
|
|
txpower.rates[i].rf_gain = wpi_rf_gain_2ghz[idx];
|
|
txpower.rates[i].dsp_gain = wpi_dsp_gain_2ghz[idx];
|
|
}
|
|
DPRINTF(("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 ieee80211com *ic = &sc->sc_ic;
|
|
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 cooler than factory-calibrated: decrease 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
|
|
}
|
|
|
|
/*
|
|
* 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 ieee80211com *ic = &sc->sc_ic;
|
|
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;
|
|
int error;
|
|
|
|
desc = &ring->desc[ring->cur];
|
|
data = &ring->data[ring->cur];
|
|
|
|
m0 = ieee80211_beacon_alloc(ic, ni, &bo);
|
|
if (m0 == NULL) {
|
|
aprint_error_dev(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), (void *)&bcn->wh);
|
|
m_adj(m0, sizeof (struct ieee80211_frame));
|
|
|
|
/* assume beacon frame is contiguous */
|
|
error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0,
|
|
BUS_DMA_READ | BUS_DMA_NOWAIT);
|
|
if (error) {
|
|
aprint_error_dev(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(data->map->dm_segs[0].ds_addr);
|
|
desc->segs[1].len = htole32(data->map->dm_segs[0].ds_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;
|
|
}
|
|
|
|
static int
|
|
wpi_auth(struct wpi_softc *sc)
|
|
{
|
|
struct ieee80211com *ic = &sc->sc_ic;
|
|
struct ieee80211_node *ni = ic->ic_bss;
|
|
struct wpi_node_info node;
|
|
int error;
|
|
|
|
/* update adapter's configuration */
|
|
IEEE80211_ADDR_COPY(sc->config.bssid, ni->ni_bssid);
|
|
sc->config.chan = ieee80211_chan2ieee(ic, ni->ni_chan);
|
|
sc->config.flags = htole32(WPI_CONFIG_TSF);
|
|
if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) {
|
|
sc->config.flags |= htole32(WPI_CONFIG_AUTO |
|
|
WPI_CONFIG_24GHZ);
|
|
}
|
|
switch (ic->ic_curmode) {
|
|
case IEEE80211_MODE_11A:
|
|
sc->config.cck_mask = 0;
|
|
sc->config.ofdm_mask = 0x15;
|
|
break;
|
|
case IEEE80211_MODE_11B:
|
|
sc->config.cck_mask = 0x03;
|
|
sc->config.ofdm_mask = 0;
|
|
break;
|
|
default: /* 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) {
|
|
aprint_error_dev(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) {
|
|
aprint_error_dev(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) {
|
|
aprint_error_dev(sc->sc_dev, "could not add BSS node\n");
|
|
return error;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Send a scan request to the firmware. Since this command is huge, we map it
|
|
* into a mbuf instead of using the pre-allocated set of commands.
|
|
*/
|
|
static int
|
|
wpi_scan(struct wpi_softc *sc, uint16_t flags)
|
|
{
|
|
struct ieee80211com *ic = &sc->sc_ic;
|
|
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;
|
|
|
|
desc = &ring->desc[ring->cur];
|
|
data = &ring->data[ring->cur];
|
|
|
|
MGETHDR(data->m, M_DONTWAIT, MT_DATA);
|
|
if (data->m == NULL) {
|
|
aprint_error_dev(sc->sc_dev,
|
|
"could not allocate mbuf for scan command\n");
|
|
return ENOMEM;
|
|
}
|
|
|
|
MCLGET(data->m, M_DONTWAIT);
|
|
if (!(data->m->m_flags & M_EXT)) {
|
|
m_freem(data->m);
|
|
data->m = NULL;
|
|
aprint_error_dev(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));
|
|
hdr->txflags = htole32(WPI_TX_AUTO_SEQ);
|
|
hdr->id = WPI_ID_BROADCAST;
|
|
hdr->lifetime = htole32(WPI_LIFETIME_INFINITE);
|
|
|
|
/*
|
|
* 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); /* timeout in milliseconds */
|
|
hdr->plcp_threshold = htole16(1); /* min # of packets */
|
|
|
|
if (flags & IEEE80211_CHAN_A) {
|
|
hdr->crc_threshold = htole16(1);
|
|
/* send probe requests at 6Mbps */
|
|
hdr->rate = wpi_plcp_signal(12);
|
|
} else {
|
|
hdr->flags = htole32(WPI_CONFIG_24GHZ | WPI_CONFIG_AUTO);
|
|
/* send probe requests at 1Mbps */
|
|
hdr->rate = wpi_plcp_signal(2);
|
|
}
|
|
|
|
/* for directed scans, firmware inserts the essid IE itself */
|
|
hdr->essid[0].id = IEEE80211_ELEMID_SSID;
|
|
hdr->essid[0].len = ic->ic_des_esslen;
|
|
memcpy(hdr->essid[0].data, ic->ic_des_essid, ic->ic_des_esslen);
|
|
|
|
/*
|
|
* 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 + 1);
|
|
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, etherbroadcastaddr);
|
|
IEEE80211_ADDR_COPY(wh->i_addr2, ic->ic_myaddr);
|
|
IEEE80211_ADDR_COPY(wh->i_addr3, etherbroadcastaddr);
|
|
*(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 empty essid IE (firmware generates it for directed scans) */
|
|
*frm++ = IEEE80211_ELEMID_SSID;
|
|
*frm++ = 0;
|
|
|
|
mode = ieee80211_chan2mode(ic, ic->ic_ibss_chan);
|
|
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->paylen = htole16(frm - (uint8_t *)wh);
|
|
|
|
chan = (struct wpi_scan_chan *)frm;
|
|
for (c = &ic->ic_channels[1];
|
|
c <= &ic->ic_channels[IEEE80211_CHAN_MAX]; c++) {
|
|
if ((c->ic_flags & flags) != 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_esslen != 0)
|
|
chan->flags |= WPI_CHAN_DIRECT;
|
|
}
|
|
chan->dsp_gain = 0x6e;
|
|
if (IEEE80211_IS_CHAN_5GHZ(c)) {
|
|
chan->rf_gain = 0x3b;
|
|
chan->active = htole16(10);
|
|
chan->passive = htole16(110);
|
|
} else {
|
|
chan->rf_gain = 0x28;
|
|
chan->active = htole16(20);
|
|
chan->passive = htole16(120);
|
|
}
|
|
hdr->nchan++;
|
|
chan++;
|
|
|
|
frm += sizeof (struct wpi_scan_chan);
|
|
}
|
|
hdr->len = htole16(frm - (uint8_t *)hdr);
|
|
pktlen = frm - (uint8_t *)cmd;
|
|
|
|
error = bus_dmamap_load(sc->sc_dmat, data->map, cmd, pktlen,
|
|
NULL, BUS_DMA_NOWAIT);
|
|
if (error) {
|
|
aprint_error_dev(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(data->map->dm_segs[0].ds_addr);
|
|
desc->segs[0].len = htole32(data->map->dm_segs[0].ds_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; /* will be notified async. of failure/success */
|
|
}
|
|
|
|
static int
|
|
wpi_config(struct wpi_softc *sc)
|
|
{
|
|
struct ieee80211com *ic = &sc->sc_ic;
|
|
struct ifnet *ifp = ic->ic_ifp;
|
|
struct wpi_power power;
|
|
struct wpi_bluetooth bluetooth;
|
|
struct wpi_node_info node;
|
|
int error;
|
|
|
|
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) {
|
|
aprint_error_dev(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) {
|
|
aprint_error_dev(sc->sc_dev,
|
|
"could not configure bluetooth coexistence\n");
|
|
return error;
|
|
}
|
|
|
|
/* configure adapter */
|
|
memset(&sc->config, 0, sizeof (struct wpi_config));
|
|
IEEE80211_ADDR_COPY(ic->ic_myaddr, CLLADDR(ifp->if_sadl));
|
|
IEEE80211_ADDR_COPY(sc->config.myaddr, ic->ic_myaddr);
|
|
/*set default channel*/
|
|
sc->config.chan = ieee80211_chan2ieee(ic, ic->ic_ibss_chan);
|
|
sc->config.flags = htole32(WPI_CONFIG_TSF);
|
|
if (IEEE80211_IS_CHAN_2GHZ(ic->ic_ibss_chan)) {
|
|
sc->config.flags |= htole32(WPI_CONFIG_AUTO |
|
|
WPI_CONFIG_24GHZ);
|
|
}
|
|
sc->config.filter = 0;
|
|
switch (ic->ic_opmode) {
|
|
case IEEE80211_M_STA:
|
|
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;
|
|
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;
|
|
}
|
|
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) {
|
|
aprint_error_dev(sc->sc_dev, "configure command failed\n");
|
|
return error;
|
|
}
|
|
|
|
/* configuration has changed, set Tx power accordingly */
|
|
if ((error = wpi_set_txpower(sc, ic->ic_ibss_chan, 0)) != 0) {
|
|
aprint_error_dev(sc->sc_dev, "could not set Tx power\n");
|
|
return error;
|
|
}
|
|
|
|
/* add broadcast node */
|
|
memset(&node, 0, sizeof node);
|
|
IEEE80211_ADDR_COPY(node.bssid, etherbroadcastaddr);
|
|
node.id = WPI_ID_BROADCAST;
|
|
node.rate = 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, 0);
|
|
if (error != 0) {
|
|
aprint_error_dev(sc->sc_dev, "could not add broadcast node\n");
|
|
return error;
|
|
}
|
|
|
|
if ((error = wpi_mrr_setup(sc)) != 0) {
|
|
aprint_error_dev(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;
|
|
|
|
tmp = WPI_READ(sc, WPI_RESET);
|
|
WPI_WRITE(sc, WPI_RESET, tmp | WPI_STOP_MASTER);
|
|
|
|
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) {
|
|
aprint_error_dev(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) {
|
|
aprint_error_dev(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;
|
|
|
|
/* 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 < 1000; ntries++) {
|
|
if (WPI_READ(sc, WPI_GPIO_CTL) & WPI_GPIO_CLOCK)
|
|
break;
|
|
DELAY(10);
|
|
}
|
|
if (ntries == 1000) {
|
|
aprint_error_dev(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) {
|
|
aprint_error_dev(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 reference driver */
|
|
hw = WPI_READ(sc, WPI_HWCONFIG);
|
|
|
|
rev = pci_conf_read(sc->sc_pct, sc->sc_pcitag, PCI_CLASS_REG);
|
|
rev = PCI_REVISION(rev);
|
|
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;
|
|
|
|
DPRINTF(("setting h/w config %x\n", hw));
|
|
WPI_WRITE(sc, WPI_HWCONFIG, hw);
|
|
}
|
|
|
|
static int
|
|
wpi_init(struct ifnet *ifp)
|
|
{
|
|
struct wpi_softc *sc = ifp->if_softc;
|
|
struct ieee80211com *ic = &sc->sc_ic;
|
|
uint32_t tmp;
|
|
int qid, ntries, error;
|
|
|
|
wpi_stop(ifp,1);
|
|
(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);
|
|
|
|
/* clear any pending interrupts */
|
|
WPI_WRITE(sc, WPI_INTR, 0xffffffff);
|
|
/* enable interrupts */
|
|
WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK);
|
|
|
|
/* not sure why/if this is necessary... */
|
|
WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF);
|
|
WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF);
|
|
|
|
if ((error = wpi_load_firmware(sc)) != 0) {
|
|
aprint_error_dev(sc->sc_dev, "could not load firmware\n");
|
|
goto fail1;
|
|
}
|
|
|
|
/* Check the status of the radio switch */
|
|
if (wpi_getrfkill(sc)) {
|
|
aprint_error_dev(sc->sc_dev, "Radio is disabled by hardware switch\n");
|
|
error = EBUSY;
|
|
goto fail1;
|
|
}
|
|
|
|
/* 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) {
|
|
aprint_error_dev(sc->sc_dev,
|
|
"timeout waiting for thermal sensors calibration\n");
|
|
error = ETIMEDOUT;
|
|
goto fail1;
|
|
}
|
|
|
|
DPRINTF(("temperature %d\n", sc->temp));
|
|
|
|
if ((error = wpi_config(sc)) != 0) {
|
|
aprint_error_dev(sc->sc_dev, "could not configure device\n");
|
|
goto fail1;
|
|
}
|
|
|
|
ifp->if_flags &= ~IFF_OACTIVE;
|
|
ifp->if_flags |= IFF_RUNNING;
|
|
|
|
if (ic->ic_opmode != IEEE80211_M_MONITOR) {
|
|
if (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)
|
|
ieee80211_new_state(ic, IEEE80211_S_SCAN, -1);
|
|
}
|
|
else
|
|
ieee80211_new_state(ic, IEEE80211_S_RUN, -1);
|
|
|
|
return 0;
|
|
|
|
fail1: wpi_stop(ifp, 1);
|
|
return error;
|
|
}
|
|
|
|
|
|
static void
|
|
wpi_stop(struct ifnet *ifp, int disable)
|
|
{
|
|
struct wpi_softc *sc = ifp->if_softc;
|
|
struct ieee80211com *ic = &sc->sc_ic;
|
|
uint32_t tmp;
|
|
int ac;
|
|
|
|
ifp->if_timer = sc->sc_tx_timer = 0;
|
|
ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
|
|
|
|
ieee80211_new_state(ic, IEEE80211_S_INIT, -1);
|
|
|
|
/* 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);
|
|
}
|
|
|
|
static bool
|
|
wpi_resume(device_t dv, const pmf_qual_t *qual)
|
|
{
|
|
struct wpi_softc *sc = device_private(dv);
|
|
|
|
(void)wpi_reset(sc);
|
|
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
* Return whether or not the radio is enabled in hardware
|
|
* (i.e. the rfkill switch is "off").
|
|
*/
|
|
static int
|
|
wpi_getrfkill(struct wpi_softc *sc)
|
|
{
|
|
uint32_t tmp;
|
|
|
|
wpi_mem_lock(sc);
|
|
tmp = wpi_mem_read(sc, WPI_MEM_RFKILL);
|
|
wpi_mem_unlock(sc);
|
|
|
|
return !(tmp & 0x01);
|
|
}
|
|
|
|
static int
|
|
wpi_sysctl_radio(SYSCTLFN_ARGS)
|
|
{
|
|
struct sysctlnode node;
|
|
struct wpi_softc *sc;
|
|
int val, error;
|
|
|
|
node = *rnode;
|
|
sc = (struct wpi_softc *)node.sysctl_data;
|
|
|
|
val = !wpi_getrfkill(sc);
|
|
|
|
node.sysctl_data = &val;
|
|
error = sysctl_lookup(SYSCTLFN_CALL(&node));
|
|
|
|
if (error || newp == NULL)
|
|
return error;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
wpi_sysctlattach(struct wpi_softc *sc)
|
|
{
|
|
int rc;
|
|
const struct sysctlnode *rnode;
|
|
const struct sysctlnode *cnode;
|
|
|
|
struct sysctllog **clog = &sc->sc_sysctllog;
|
|
|
|
if ((rc = sysctl_createv(clog, 0, NULL, &rnode,
|
|
CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", NULL,
|
|
NULL, 0, NULL, 0, CTL_HW, CTL_EOL)) != 0)
|
|
goto err;
|
|
|
|
if ((rc = sysctl_createv(clog, 0, &rnode, &rnode,
|
|
CTLFLAG_PERMANENT, CTLTYPE_NODE, device_xname(sc->sc_dev),
|
|
SYSCTL_DESCR("wpi controls and statistics"),
|
|
NULL, 0, NULL, 0, CTL_CREATE, CTL_EOL)) != 0)
|
|
goto err;
|
|
|
|
if ((rc = sysctl_createv(clog, 0, &rnode, &cnode,
|
|
CTLFLAG_PERMANENT, CTLTYPE_INT, "radio",
|
|
SYSCTL_DESCR("radio transmitter switch state (0=off, 1=on)"),
|
|
wpi_sysctl_radio, 0, sc, 0, CTL_CREATE, CTL_EOL)) != 0)
|
|
goto err;
|
|
|
|
#ifdef WPI_DEBUG
|
|
/* control debugging printfs */
|
|
if ((rc = sysctl_createv(clog, 0, &rnode, &cnode,
|
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT,
|
|
"debug", SYSCTL_DESCR("Enable debugging output"),
|
|
NULL, 0, &wpi_debug, 0, CTL_CREATE, CTL_EOL)) != 0)
|
|
goto err;
|
|
#endif
|
|
|
|
return;
|
|
err:
|
|
aprint_error("%s: sysctl_createv failed (rc = %d)\n", __func__, rc);
|
|
}
|