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freebsd-nq/sys/dev/wpi/if_wpi.c
Adrian Chadd 3d9089a6f1 Add TX status codes (obtained from iwlegacy) 
PR:		kern/197143
Differential Revision:	Andriy Voskoboinyk <s3erios@gmail.com>
Obtained from:	Linux drivers/net/wireless/iwlegacy
2015-05-03 22:49:47 +00:00

5453 lines
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/*-
* Copyright (c) 2006,2007
* Damien Bergamini <damien.bergamini@free.fr>
* Benjamin Close <Benjamin.Close@clearchain.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* Driver for Intel PRO/Wireless 3945ABG 802.11 network adapters.
*
* The 3945ABG network adapter doesn't use traditional hardware as
* many other adaptors do. Instead at run time the eeprom is set into a known
* state and told to load boot firmware. The boot firmware loads an init and a
* main binary firmware image into SRAM on the card via DMA.
* Once the firmware is loaded, the driver/hw then
* communicate by way of circular dma rings via the SRAM to the firmware.
*
* There is 6 memory rings. 1 command ring, 1 rx data ring & 4 tx data rings.
* The 4 tx data rings allow for prioritization QoS.
*
* The rx data ring consists of 32 dma buffers. Two registers are used to
* indicate where in the ring the driver and the firmware are up to. The
* driver sets the initial read index (reg1) and the initial write index (reg2),
* the firmware updates the read index (reg1) on rx of a packet and fires an
* interrupt. The driver then processes the buffers starting at reg1 indicating
* to the firmware which buffers have been accessed by updating reg2. At the
* same time allocating new memory for the processed buffer.
*
* A similar thing happens with the tx rings. The difference is the firmware
* stop processing buffers once the queue is full and until confirmation
* of a successful transmition (tx_done) has occurred.
*
* The command ring operates in the same manner as the tx queues.
*
* All communication direct to the card (ie eeprom) is classed as Stage1
* communication
*
* All communication via the firmware to the card is classed as State2.
* The firmware consists of 2 parts. A bootstrap firmware and a runtime
* firmware. The bootstrap firmware and runtime firmware are loaded
* from host memory via dma to the card then told to execute. From this point
* on the majority of communications between the driver and the card goes
* via the firmware.
*/
#include "opt_wlan.h"
#include "opt_wpi.h"
#include <sys/param.h>
#include <sys/sysctl.h>
#include <sys/sockio.h>
#include <sys/mbuf.h>
#include <sys/kernel.h>
#include <sys/socket.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/queue.h>
#include <sys/taskqueue.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/endian.h>
#include <sys/linker.h>
#include <sys/firmware.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/rman.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <net/bpf.h>
#include <net/if.h>
#include <net/if_var.h>
#include <net/if_arp.h>
#include <net/ethernet.h>
#include <net/if_dl.h>
#include <net/if_media.h>
#include <net/if_types.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/in_var.h>
#include <netinet/if_ether.h>
#include <netinet/ip.h>
#include <net80211/ieee80211_var.h>
#include <net80211/ieee80211_radiotap.h>
#include <net80211/ieee80211_regdomain.h>
#include <net80211/ieee80211_ratectl.h>
#include <dev/wpi/if_wpireg.h>
#include <dev/wpi/if_wpivar.h>
#include <dev/wpi/if_wpi_debug.h>
struct wpi_ident {
uint16_t vendor;
uint16_t device;
uint16_t subdevice;
const char *name;
};
static const struct wpi_ident wpi_ident_table[] = {
/* The below entries support ABG regardless of the subid */
{ 0x8086, 0x4222, 0x0, "Intel(R) PRO/Wireless 3945ABG" },
{ 0x8086, 0x4227, 0x0, "Intel(R) PRO/Wireless 3945ABG" },
/* The below entries only support BG */
{ 0x8086, 0x4222, 0x1005, "Intel(R) PRO/Wireless 3945BG" },
{ 0x8086, 0x4222, 0x1034, "Intel(R) PRO/Wireless 3945BG" },
{ 0x8086, 0x4227, 0x1014, "Intel(R) PRO/Wireless 3945BG" },
{ 0x8086, 0x4222, 0x1044, "Intel(R) PRO/Wireless 3945BG" },
{ 0, 0, 0, NULL }
};
static int wpi_probe(device_t);
static int wpi_attach(device_t);
static void wpi_radiotap_attach(struct wpi_softc *);
static void wpi_sysctlattach(struct wpi_softc *);
static void wpi_init_beacon(struct wpi_vap *);
static struct ieee80211vap *wpi_vap_create(struct ieee80211com *,
const char [IFNAMSIZ], int, enum ieee80211_opmode, int,
const uint8_t [IEEE80211_ADDR_LEN],
const uint8_t [IEEE80211_ADDR_LEN]);
static void wpi_vap_delete(struct ieee80211vap *);
static int wpi_detach(device_t);
static int wpi_shutdown(device_t);
static int wpi_suspend(device_t);
static int wpi_resume(device_t);
static int wpi_nic_lock(struct wpi_softc *);
static int wpi_read_prom_data(struct wpi_softc *, uint32_t, void *, int);
static void wpi_dma_map_addr(void *, bus_dma_segment_t *, int, int);
static int wpi_dma_contig_alloc(struct wpi_softc *, struct wpi_dma_info *,
void **, bus_size_t, bus_size_t);
static void wpi_dma_contig_free(struct wpi_dma_info *);
static int wpi_alloc_shared(struct wpi_softc *);
static void wpi_free_shared(struct wpi_softc *);
static int wpi_alloc_fwmem(struct wpi_softc *);
static void wpi_free_fwmem(struct wpi_softc *);
static int wpi_alloc_rx_ring(struct wpi_softc *);
static void wpi_update_rx_ring(struct wpi_softc *);
static void wpi_reset_rx_ring(struct wpi_softc *);
static void wpi_free_rx_ring(struct wpi_softc *);
static int wpi_alloc_tx_ring(struct wpi_softc *, struct wpi_tx_ring *,
int);
static void wpi_update_tx_ring(struct wpi_softc *, struct wpi_tx_ring *);
static void wpi_reset_tx_ring(struct wpi_softc *, struct wpi_tx_ring *);
static void wpi_free_tx_ring(struct wpi_softc *, struct wpi_tx_ring *);
static int wpi_read_eeprom(struct wpi_softc *,
uint8_t macaddr[IEEE80211_ADDR_LEN]);
static uint32_t wpi_eeprom_channel_flags(struct wpi_eeprom_chan *);
static void wpi_read_eeprom_band(struct wpi_softc *, int);
static int wpi_read_eeprom_channels(struct wpi_softc *, int);
static struct wpi_eeprom_chan *wpi_find_eeprom_channel(struct wpi_softc *,
struct ieee80211_channel *);
static int wpi_setregdomain(struct ieee80211com *,
struct ieee80211_regdomain *, int,
struct ieee80211_channel[]);
static int wpi_read_eeprom_group(struct wpi_softc *, int);
static int wpi_add_node_entry_adhoc(struct wpi_softc *);
static void wpi_node_free(struct ieee80211_node *);
static struct ieee80211_node *wpi_node_alloc(struct ieee80211vap *,
const uint8_t mac[IEEE80211_ADDR_LEN]);
static int wpi_newstate(struct ieee80211vap *, enum ieee80211_state, int);
static void wpi_calib_timeout(void *);
static void wpi_rx_done(struct wpi_softc *, struct wpi_rx_desc *,
struct wpi_rx_data *);
static void wpi_rx_statistics(struct wpi_softc *, struct wpi_rx_desc *,
struct wpi_rx_data *);
static void wpi_tx_done(struct wpi_softc *, struct wpi_rx_desc *);
static void wpi_cmd_done(struct wpi_softc *, struct wpi_rx_desc *);
static void wpi_notif_intr(struct wpi_softc *);
static void wpi_wakeup_intr(struct wpi_softc *);
#ifdef WPI_DEBUG
static void wpi_debug_registers(struct wpi_softc *);
#endif
static void wpi_fatal_intr(struct wpi_softc *);
static void wpi_intr(void *);
static int wpi_cmd2(struct wpi_softc *, struct wpi_buf *);
static int wpi_tx_data(struct wpi_softc *, struct mbuf *,
struct ieee80211_node *);
static int wpi_tx_data_raw(struct wpi_softc *, struct mbuf *,
struct ieee80211_node *,
const struct ieee80211_bpf_params *);
static int wpi_raw_xmit(struct ieee80211_node *, struct mbuf *,
const struct ieee80211_bpf_params *);
static void wpi_start(struct ifnet *);
static void wpi_start_task(void *, int);
static void wpi_watchdog_rfkill(void *);
static void wpi_scan_timeout(void *);
static void wpi_tx_timeout(void *);
static int wpi_ioctl(struct ifnet *, u_long, caddr_t);
static int wpi_cmd(struct wpi_softc *, int, const void *, size_t, int);
static int wpi_mrr_setup(struct wpi_softc *);
static int wpi_add_node(struct wpi_softc *, struct ieee80211_node *);
static int wpi_add_broadcast_node(struct wpi_softc *, int);
static int wpi_add_ibss_node(struct wpi_softc *, struct ieee80211_node *);
static void wpi_del_node(struct wpi_softc *, struct ieee80211_node *);
static int wpi_updateedca(struct ieee80211com *);
static void wpi_set_promisc(struct wpi_softc *);
static void wpi_update_promisc(struct ifnet *);
static void wpi_update_mcast(struct ifnet *);
static void wpi_set_led(struct wpi_softc *, uint8_t, uint8_t, uint8_t);
static int wpi_set_timing(struct wpi_softc *, struct ieee80211_node *);
static void wpi_power_calibration(struct wpi_softc *);
static int wpi_set_txpower(struct wpi_softc *, int);
static int wpi_get_power_index(struct wpi_softc *,
struct wpi_power_group *, uint8_t, int, int);
static int wpi_set_pslevel(struct wpi_softc *, uint8_t, int, int);
static int wpi_send_btcoex(struct wpi_softc *);
static int wpi_send_rxon(struct wpi_softc *, int, int);
static int wpi_config(struct wpi_softc *);
static uint16_t wpi_get_active_dwell_time(struct wpi_softc *,
struct ieee80211_channel *, uint8_t);
static uint16_t wpi_limit_dwell(struct wpi_softc *, uint16_t);
static uint16_t wpi_get_passive_dwell_time(struct wpi_softc *,
struct ieee80211_channel *);
static int wpi_scan(struct wpi_softc *, struct ieee80211_channel *);
static int wpi_auth(struct wpi_softc *, struct ieee80211vap *);
static int wpi_config_beacon(struct wpi_vap *);
static int wpi_setup_beacon(struct wpi_softc *, struct ieee80211_node *);
static void wpi_update_beacon(struct ieee80211vap *, int);
static void wpi_newassoc(struct ieee80211_node *, int);
static int wpi_run(struct wpi_softc *, struct ieee80211vap *);
static int wpi_load_key(struct ieee80211_node *,
const struct ieee80211_key *);
static void wpi_load_key_cb(void *, struct ieee80211_node *);
static int wpi_set_global_keys(struct ieee80211_node *);
static int wpi_del_key(struct ieee80211_node *,
const struct ieee80211_key *);
static void wpi_del_key_cb(void *, struct ieee80211_node *);
static int wpi_process_key(struct ieee80211vap *,
const struct ieee80211_key *, int);
static int wpi_key_set(struct ieee80211vap *,
const struct ieee80211_key *,
const uint8_t mac[IEEE80211_ADDR_LEN]);
static int wpi_key_delete(struct ieee80211vap *,
const struct ieee80211_key *);
static int wpi_post_alive(struct wpi_softc *);
static int wpi_load_bootcode(struct wpi_softc *, const uint8_t *, int);
static int wpi_load_firmware(struct wpi_softc *);
static int wpi_read_firmware(struct wpi_softc *);
static void wpi_unload_firmware(struct wpi_softc *);
static int wpi_clock_wait(struct wpi_softc *);
static int wpi_apm_init(struct wpi_softc *);
static void wpi_apm_stop_master(struct wpi_softc *);
static void wpi_apm_stop(struct wpi_softc *);
static void wpi_nic_config(struct wpi_softc *);
static int wpi_hw_init(struct wpi_softc *);
static void wpi_hw_stop(struct wpi_softc *);
static void wpi_radio_on(void *, int);
static void wpi_radio_off(void *, int);
static void wpi_init(void *);
static void wpi_stop_locked(struct wpi_softc *);
static void wpi_stop(struct wpi_softc *);
static void wpi_scan_start(struct ieee80211com *);
static void wpi_scan_end(struct ieee80211com *);
static void wpi_set_channel(struct ieee80211com *);
static void wpi_scan_curchan(struct ieee80211_scan_state *, unsigned long);
static void wpi_scan_mindwell(struct ieee80211_scan_state *);
static void wpi_hw_reset(void *, int);
static device_method_t wpi_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, wpi_probe),
DEVMETHOD(device_attach, wpi_attach),
DEVMETHOD(device_detach, wpi_detach),
DEVMETHOD(device_shutdown, wpi_shutdown),
DEVMETHOD(device_suspend, wpi_suspend),
DEVMETHOD(device_resume, wpi_resume),
DEVMETHOD_END
};
static driver_t wpi_driver = {
"wpi",
wpi_methods,
sizeof (struct wpi_softc)
};
static devclass_t wpi_devclass;
DRIVER_MODULE(wpi, pci, wpi_driver, wpi_devclass, NULL, NULL);
MODULE_VERSION(wpi, 1);
MODULE_DEPEND(wpi, pci, 1, 1, 1);
MODULE_DEPEND(wpi, wlan, 1, 1, 1);
MODULE_DEPEND(wpi, firmware, 1, 1, 1);
static int
wpi_probe(device_t dev)
{
const struct wpi_ident *ident;
for (ident = wpi_ident_table; ident->name != NULL; ident++) {
if (pci_get_vendor(dev) == ident->vendor &&
pci_get_device(dev) == ident->device) {
device_set_desc(dev, ident->name);
return (BUS_PROBE_DEFAULT);
}
}
return ENXIO;
}
static int
wpi_attach(device_t dev)
{
struct wpi_softc *sc = (struct wpi_softc *)device_get_softc(dev);
struct ieee80211com *ic;
struct ifnet *ifp;
int i, error, rid;
#ifdef WPI_DEBUG
int supportsa = 1;
const struct wpi_ident *ident;
#endif
uint8_t macaddr[IEEE80211_ADDR_LEN];
sc->sc_dev = dev;
#ifdef WPI_DEBUG
error = resource_int_value(device_get_name(sc->sc_dev),
device_get_unit(sc->sc_dev), "debug", &(sc->sc_debug));
if (error != 0)
sc->sc_debug = 0;
#else
sc->sc_debug = 0;
#endif
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__);
/*
* Get the offset of the PCI Express Capability Structure in PCI
* Configuration Space.
*/
error = pci_find_cap(dev, PCIY_EXPRESS, &sc->sc_cap_off);
if (error != 0) {
device_printf(dev, "PCIe capability structure not found!\n");
return error;
}
/*
* Some card's only support 802.11b/g not a, check to see if
* this is one such card. A 0x0 in the subdevice table indicates
* the entire subdevice range is to be ignored.
*/
#ifdef WPI_DEBUG
for (ident = wpi_ident_table; ident->name != NULL; ident++) {
if (ident->subdevice &&
pci_get_subdevice(dev) == ident->subdevice) {
supportsa = 0;
break;
}
}
#endif
/* Clear device-specific "PCI retry timeout" register (41h). */
pci_write_config(dev, 0x41, 0, 1);
/* Enable bus-mastering. */
pci_enable_busmaster(dev);
rid = PCIR_BAR(0);
sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
RF_ACTIVE);
if (sc->mem == NULL) {
device_printf(dev, "can't map mem space\n");
return ENOMEM;
}
sc->sc_st = rman_get_bustag(sc->mem);
sc->sc_sh = rman_get_bushandle(sc->mem);
i = 1;
rid = 0;
if (pci_alloc_msi(dev, &i) == 0)
rid = 1;
/* Install interrupt handler. */
sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE |
(rid != 0 ? 0 : RF_SHAREABLE));
if (sc->irq == NULL) {
device_printf(dev, "can't map interrupt\n");
error = ENOMEM;
goto fail;
}
WPI_LOCK_INIT(sc);
WPI_TX_LOCK_INIT(sc);
WPI_RXON_LOCK_INIT(sc);
WPI_NT_LOCK_INIT(sc);
WPI_TXQ_LOCK_INIT(sc);
WPI_TXQ_STATE_LOCK_INIT(sc);
/* Allocate DMA memory for firmware transfers. */
if ((error = wpi_alloc_fwmem(sc)) != 0) {
device_printf(dev,
"could not allocate memory for firmware, error %d\n",
error);
goto fail;
}
/* Allocate shared page. */
if ((error = wpi_alloc_shared(sc)) != 0) {
device_printf(dev, "could not allocate shared page\n");
goto fail;
}
/* Allocate TX rings - 4 for QoS purposes, 1 for commands. */
for (i = 0; i < WPI_NTXQUEUES; i++) {
if ((error = wpi_alloc_tx_ring(sc, &sc->txq[i], i)) != 0) {
device_printf(dev,
"could not allocate TX ring %d, error %d\n", i,
error);
goto fail;
}
}
/* Allocate RX ring. */
if ((error = wpi_alloc_rx_ring(sc)) != 0) {
device_printf(dev, "could not allocate RX ring, error %d\n",
error);
goto fail;
}
/* Clear pending interrupts. */
WPI_WRITE(sc, WPI_INT, 0xffffffff);
ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211);
if (ifp == NULL) {
device_printf(dev, "can not allocate ifnet structure\n");
goto fail;
}
ic = ifp->if_l2com;
ic->ic_ifp = ifp;
ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */
ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */
/* Set device capabilities. */
ic->ic_caps =
IEEE80211_C_STA /* station mode supported */
| IEEE80211_C_IBSS /* IBSS mode supported */
| IEEE80211_C_HOSTAP /* Host access point mode */
| IEEE80211_C_MONITOR /* monitor mode supported */
| IEEE80211_C_AHDEMO /* adhoc demo mode */
| IEEE80211_C_BGSCAN /* capable of bg scanning */
| IEEE80211_C_TXPMGT /* tx power management */
| IEEE80211_C_SHSLOT /* short slot time supported */
| IEEE80211_C_WPA /* 802.11i */
| IEEE80211_C_SHPREAMBLE /* short preamble supported */
| IEEE80211_C_WME /* 802.11e */
| IEEE80211_C_PMGT /* Station-side power mgmt */
;
ic->ic_cryptocaps =
IEEE80211_CRYPTO_AES_CCM;
/*
* Read in the eeprom and also setup the channels for
* net80211. We don't set the rates as net80211 does this for us
*/
if ((error = wpi_read_eeprom(sc, macaddr)) != 0) {
device_printf(dev, "could not read EEPROM, error %d\n",
error);
goto fail;
}
#ifdef WPI_DEBUG
if (bootverbose) {
device_printf(sc->sc_dev, "Regulatory Domain: %.4s\n",
sc->domain);
device_printf(sc->sc_dev, "Hardware Type: %c\n",
sc->type > 1 ? 'B': '?');
device_printf(sc->sc_dev, "Hardware Revision: %c\n",
((sc->rev & 0xf0) == 0xd0) ? 'D': '?');
device_printf(sc->sc_dev, "SKU %s support 802.11a\n",
supportsa ? "does" : "does not");
/* XXX hw_config uses the PCIDEV for the Hardware rev. Must
check what sc->rev really represents - benjsc 20070615 */
}
#endif
if_initname(ifp, device_get_name(dev), device_get_unit(dev));
ifp->if_softc = sc;
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
ifp->if_init = wpi_init;
ifp->if_ioctl = wpi_ioctl;
ifp->if_start = wpi_start;
IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
IFQ_SET_READY(&ifp->if_snd);
ieee80211_ifattach(ic, macaddr);
ic->ic_vap_create = wpi_vap_create;
ic->ic_vap_delete = wpi_vap_delete;
ic->ic_raw_xmit = wpi_raw_xmit;
ic->ic_node_alloc = wpi_node_alloc;
sc->sc_node_free = ic->ic_node_free;
ic->ic_node_free = wpi_node_free;
ic->ic_wme.wme_update = wpi_updateedca;
ic->ic_update_promisc = wpi_update_promisc;
ic->ic_update_mcast = wpi_update_mcast;
ic->ic_newassoc = wpi_newassoc;
ic->ic_scan_start = wpi_scan_start;
ic->ic_scan_end = wpi_scan_end;
ic->ic_set_channel = wpi_set_channel;
ic->ic_scan_curchan = wpi_scan_curchan;
ic->ic_scan_mindwell = wpi_scan_mindwell;
ic->ic_setregdomain = wpi_setregdomain;
wpi_radiotap_attach(sc);
callout_init_mtx(&sc->calib_to, &sc->rxon_mtx, 0);
callout_init_mtx(&sc->scan_timeout, &sc->rxon_mtx, 0);
callout_init_mtx(&sc->tx_timeout, &sc->txq_state_mtx, 0);
callout_init_mtx(&sc->watchdog_rfkill, &sc->sc_mtx, 0);
TASK_INIT(&sc->sc_reinittask, 0, wpi_hw_reset, sc);
TASK_INIT(&sc->sc_radiooff_task, 0, wpi_radio_off, sc);
TASK_INIT(&sc->sc_radioon_task, 0, wpi_radio_on, sc);
TASK_INIT(&sc->sc_start_task, 0, wpi_start_task, sc);
sc->sc_tq = taskqueue_create("wpi_taskq", M_WAITOK,
taskqueue_thread_enqueue, &sc->sc_tq);
error = taskqueue_start_threads(&sc->sc_tq, 1, 0, "wpi_taskq");
if (error != 0) {
device_printf(dev, "can't start threads, error %d\n", error);
goto fail;
}
wpi_sysctlattach(sc);
/*
* Hook our interrupt after all initialization is complete.
*/
error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE,
NULL, wpi_intr, sc, &sc->sc_ih);
if (error != 0) {
device_printf(dev, "can't establish interrupt, error %d\n",
error);
goto fail;
}
if (bootverbose)
ieee80211_announce(ic);
#ifdef WPI_DEBUG
if (sc->sc_debug & WPI_DEBUG_HW)
ieee80211_announce_channels(ic);
#endif
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__);
return 0;
fail: wpi_detach(dev);
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__);
return error;
}
/*
* Attach the interface to 802.11 radiotap.
*/
static void
wpi_radiotap_attach(struct wpi_softc *sc)
{
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__);
ieee80211_radiotap_attach(ic,
&sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
WPI_TX_RADIOTAP_PRESENT,
&sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
WPI_RX_RADIOTAP_PRESENT);
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__);
}
static void
wpi_sysctlattach(struct wpi_softc *sc)
{
#ifdef WPI_DEBUG
struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev);
struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev);
SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
"debug", CTLFLAG_RW, &sc->sc_debug, sc->sc_debug,
"control debugging printfs");
#endif
}
static void
wpi_init_beacon(struct wpi_vap *wvp)
{
struct wpi_buf *bcn = &wvp->wv_bcbuf;
struct wpi_cmd_beacon *cmd = (struct wpi_cmd_beacon *)&bcn->data;
cmd->id = WPI_ID_BROADCAST;
cmd->ofdm_mask = 0xff;
cmd->cck_mask = 0x0f;
cmd->lifetime = htole32(WPI_LIFETIME_INFINITE);
cmd->flags = htole32(WPI_TX_AUTO_SEQ | WPI_TX_INSERT_TSTAMP);
bcn->code = WPI_CMD_SET_BEACON;
bcn->ac = WPI_CMD_QUEUE_NUM;
bcn->size = sizeof(struct wpi_cmd_beacon);
}
static struct ieee80211vap *
wpi_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit,
enum ieee80211_opmode opmode, int flags,
const uint8_t bssid[IEEE80211_ADDR_LEN],
const uint8_t mac[IEEE80211_ADDR_LEN])
{
struct wpi_vap *wvp;
struct ieee80211vap *vap;
if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */
return NULL;
wvp = (struct wpi_vap *) malloc(sizeof(struct wpi_vap),
M_80211_VAP, M_NOWAIT | M_ZERO);
if (wvp == NULL)
return NULL;
vap = &wvp->wv_vap;
ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac);
if (opmode == IEEE80211_M_IBSS || opmode == IEEE80211_M_HOSTAP) {
WPI_VAP_LOCK_INIT(wvp);
wpi_init_beacon(wvp);
}
/* Override with driver methods. */
vap->iv_key_set = wpi_key_set;
vap->iv_key_delete = wpi_key_delete;
wvp->wv_newstate = vap->iv_newstate;
vap->iv_newstate = wpi_newstate;
vap->iv_update_beacon = wpi_update_beacon;
vap->iv_max_aid = WPI_ID_IBSS_MAX - WPI_ID_IBSS_MIN + 1;
ieee80211_ratectl_init(vap);
/* Complete setup. */
ieee80211_vap_attach(vap, ieee80211_media_change,
ieee80211_media_status);
ic->ic_opmode = opmode;
return vap;
}
static void
wpi_vap_delete(struct ieee80211vap *vap)
{
struct wpi_vap *wvp = WPI_VAP(vap);
struct wpi_buf *bcn = &wvp->wv_bcbuf;
enum ieee80211_opmode opmode = vap->iv_opmode;
ieee80211_ratectl_deinit(vap);
ieee80211_vap_detach(vap);
if (opmode == IEEE80211_M_IBSS || opmode == IEEE80211_M_HOSTAP) {
if (bcn->m != NULL)
m_freem(bcn->m);
WPI_VAP_LOCK_DESTROY(wvp);
}
free(wvp, M_80211_VAP);
}
static int
wpi_detach(device_t dev)
{
struct wpi_softc *sc = device_get_softc(dev);
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic;
int qid;
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__);
if (ifp != NULL) {
ic = ifp->if_l2com;
ieee80211_draintask(ic, &sc->sc_radioon_task);
ieee80211_draintask(ic, &sc->sc_start_task);
wpi_stop(sc);
taskqueue_drain_all(sc->sc_tq);
taskqueue_free(sc->sc_tq);
callout_drain(&sc->watchdog_rfkill);
callout_drain(&sc->tx_timeout);
callout_drain(&sc->scan_timeout);
callout_drain(&sc->calib_to);
ieee80211_ifdetach(ic);
}
/* Uninstall interrupt handler. */
if (sc->irq != NULL) {
bus_teardown_intr(dev, sc->irq, sc->sc_ih);
bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq),
sc->irq);
pci_release_msi(dev);
}
if (sc->txq[0].data_dmat) {
/* Free DMA resources. */
for (qid = 0; qid < WPI_NTXQUEUES; qid++)
wpi_free_tx_ring(sc, &sc->txq[qid]);
wpi_free_rx_ring(sc);
wpi_free_shared(sc);
}
if (sc->fw_dma.tag)
wpi_free_fwmem(sc);
if (sc->mem != NULL)
bus_release_resource(dev, SYS_RES_MEMORY,
rman_get_rid(sc->mem), sc->mem);
if (ifp != NULL)
if_free(ifp);
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__);
WPI_TXQ_STATE_LOCK_DESTROY(sc);
WPI_TXQ_LOCK_DESTROY(sc);
WPI_NT_LOCK_DESTROY(sc);
WPI_RXON_LOCK_DESTROY(sc);
WPI_TX_LOCK_DESTROY(sc);
WPI_LOCK_DESTROY(sc);
return 0;
}
static int
wpi_shutdown(device_t dev)
{
struct wpi_softc *sc = device_get_softc(dev);
wpi_stop(sc);
return 0;
}
static int
wpi_suspend(device_t dev)
{
struct wpi_softc *sc = device_get_softc(dev);
struct ieee80211com *ic = sc->sc_ifp->if_l2com;
ieee80211_suspend_all(ic);
return 0;
}
static int
wpi_resume(device_t dev)
{
struct wpi_softc *sc = device_get_softc(dev);
struct ieee80211com *ic = sc->sc_ifp->if_l2com;
/* Clear device-specific "PCI retry timeout" register (41h). */
pci_write_config(dev, 0x41, 0, 1);
ieee80211_resume_all(ic);
return 0;
}
/*
* Grab exclusive access to NIC memory.
*/
static int
wpi_nic_lock(struct wpi_softc *sc)
{
int ntries;
/* Request exclusive access to NIC. */
WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ);
/* Spin until we actually get the lock. */
for (ntries = 0; ntries < 1000; ntries++) {
if ((WPI_READ(sc, WPI_GP_CNTRL) &
(WPI_GP_CNTRL_MAC_ACCESS_ENA | WPI_GP_CNTRL_SLEEP)) ==
WPI_GP_CNTRL_MAC_ACCESS_ENA)
return 0;
DELAY(10);
}
device_printf(sc->sc_dev, "could not lock memory\n");
return ETIMEDOUT;
}
/*
* Release lock on NIC memory.
*/
static __inline void
wpi_nic_unlock(struct wpi_softc *sc)
{
WPI_CLRBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ);
}
static __inline uint32_t
wpi_prph_read(struct wpi_softc *sc, uint32_t addr)
{
WPI_WRITE(sc, WPI_PRPH_RADDR, WPI_PRPH_DWORD | addr);
WPI_BARRIER_READ_WRITE(sc);
return WPI_READ(sc, WPI_PRPH_RDATA);
}
static __inline void
wpi_prph_write(struct wpi_softc *sc, uint32_t addr, uint32_t data)
{
WPI_WRITE(sc, WPI_PRPH_WADDR, WPI_PRPH_DWORD | addr);
WPI_BARRIER_WRITE(sc);
WPI_WRITE(sc, WPI_PRPH_WDATA, data);
}
static __inline void
wpi_prph_setbits(struct wpi_softc *sc, uint32_t addr, uint32_t mask)
{
wpi_prph_write(sc, addr, wpi_prph_read(sc, addr) | mask);
}
static __inline void
wpi_prph_clrbits(struct wpi_softc *sc, uint32_t addr, uint32_t mask)
{
wpi_prph_write(sc, addr, wpi_prph_read(sc, addr) & ~mask);
}
static __inline void
wpi_prph_write_region_4(struct wpi_softc *sc, uint32_t addr,
const uint32_t *data, int count)
{
for (; count > 0; count--, data++, addr += 4)
wpi_prph_write(sc, addr, *data);
}
static __inline uint32_t
wpi_mem_read(struct wpi_softc *sc, uint32_t addr)
{
WPI_WRITE(sc, WPI_MEM_RADDR, addr);
WPI_BARRIER_READ_WRITE(sc);
return WPI_READ(sc, WPI_MEM_RDATA);
}
static __inline void
wpi_mem_read_region_4(struct wpi_softc *sc, uint32_t addr, uint32_t *data,
int count)
{
for (; count > 0; count--, addr += 4)
*data++ = wpi_mem_read(sc, addr);
}
static int
wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int count)
{
uint8_t *out = data;
uint32_t val;
int error, ntries;
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__);
if ((error = wpi_nic_lock(sc)) != 0)
return error;
for (; count > 0; count -= 2, addr++) {
WPI_WRITE(sc, WPI_EEPROM, addr << 2);
for (ntries = 0; ntries < 10; ntries++) {
val = WPI_READ(sc, WPI_EEPROM);
if (val & WPI_EEPROM_READ_VALID)
break;
DELAY(5);
}
if (ntries == 10) {
device_printf(sc->sc_dev,
"timeout reading ROM at 0x%x\n", addr);
return ETIMEDOUT;
}
*out++= val >> 16;
if (count > 1)
*out ++= val >> 24;
}
wpi_nic_unlock(sc);
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__);
return 0;
}
static void
wpi_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
{
if (error != 0)
return;
KASSERT(nsegs == 1, ("too many DMA segments, %d should be 1", nsegs));
*(bus_addr_t *)arg = segs[0].ds_addr;
}
/*
* Allocates a contiguous block of dma memory of the requested size and
* alignment.
*/
static int
wpi_dma_contig_alloc(struct wpi_softc *sc, struct wpi_dma_info *dma,
void **kvap, bus_size_t size, bus_size_t alignment)
{
int error;
dma->tag = NULL;
dma->size = size;
error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), alignment,
0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, size,
1, size, BUS_DMA_NOWAIT, NULL, NULL, &dma->tag);
if (error != 0)
goto fail;
error = bus_dmamem_alloc(dma->tag, (void **)&dma->vaddr,
BUS_DMA_NOWAIT | BUS_DMA_ZERO | BUS_DMA_COHERENT, &dma->map);
if (error != 0)
goto fail;
error = bus_dmamap_load(dma->tag, dma->map, dma->vaddr, size,
wpi_dma_map_addr, &dma->paddr, BUS_DMA_NOWAIT);
if (error != 0)
goto fail;
bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE);
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->vaddr != NULL) {
bus_dmamap_sync(dma->tag, dma->map,
BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(dma->tag, dma->map);
bus_dmamem_free(dma->tag, dma->vaddr, dma->map);
dma->vaddr = NULL;
}
if (dma->tag != NULL) {
bus_dma_tag_destroy(dma->tag);
dma->tag = NULL;
}
}
/*
* Allocate a shared page between host and NIC.
*/
static int
wpi_alloc_shared(struct wpi_softc *sc)
{
/* Shared buffer must be aligned on a 4KB boundary. */
return wpi_dma_contig_alloc(sc, &sc->shared_dma,
(void **)&sc->shared, sizeof (struct wpi_shared), 4096);
}
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)
{
/* Must be aligned on a 16-byte boundary. */
return wpi_dma_contig_alloc(sc, &sc->fw_dma, NULL,
WPI_FW_TEXT_MAXSZ + WPI_FW_DATA_MAXSZ, 16);
}
static void
wpi_free_fwmem(struct wpi_softc *sc)
{
wpi_dma_contig_free(&sc->fw_dma);
}
static int
wpi_alloc_rx_ring(struct wpi_softc *sc)
{
struct wpi_rx_ring *ring = &sc->rxq;
bus_size_t size;
int i, error;
ring->cur = 0;
ring->update = 0;
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__);
/* Allocate RX descriptors (16KB aligned.) */
size = WPI_RX_RING_COUNT * sizeof (uint32_t);
error = wpi_dma_contig_alloc(sc, &ring->desc_dma,
(void **)&ring->desc, size, WPI_RING_DMA_ALIGN);
if (error != 0) {
device_printf(sc->sc_dev,
"%s: could not allocate RX ring DMA memory, error %d\n",
__func__, error);
goto fail;
}
/* Create RX buffer DMA tag. */
error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
MJUMPAGESIZE, 1, MJUMPAGESIZE, BUS_DMA_NOWAIT, NULL, NULL,
&ring->data_dmat);
if (error != 0) {
device_printf(sc->sc_dev,
"%s: could not create RX buf DMA tag, error %d\n",
__func__, error);
goto fail;
}
/*
* Allocate and map RX buffers.
*/
for (i = 0; i < WPI_RX_RING_COUNT; i++) {
struct wpi_rx_data *data = &ring->data[i];
bus_addr_t paddr;
error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
if (error != 0) {
device_printf(sc->sc_dev,
"%s: could not create RX buf DMA map, error %d\n",
__func__, error);
goto fail;
}
data->m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE);
if (data->m == NULL) {
device_printf(sc->sc_dev,
"%s: could not allocate RX mbuf\n", __func__);
error = ENOBUFS;
goto fail;
}
error = bus_dmamap_load(ring->data_dmat, data->map,
mtod(data->m, void *), MJUMPAGESIZE, wpi_dma_map_addr,
&paddr, BUS_DMA_NOWAIT);
if (error != 0 && error != EFBIG) {
device_printf(sc->sc_dev,
"%s: can't map mbuf (error %d)\n", __func__,
error);
goto fail;
}
/* Set physical address of RX buffer. */
ring->desc[i] = htole32(paddr);
}
bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
BUS_DMASYNC_PREWRITE);
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__);
return 0;
fail: wpi_free_rx_ring(sc);
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__);
return error;
}
static void
wpi_update_rx_ring(struct wpi_softc *sc)
{
struct wpi_rx_ring *ring = &sc->rxq;
if (ring->update != 0) {
/* Wait for INT_WAKEUP event. */
return;
}
if (WPI_READ(sc, WPI_UCODE_GP1) & WPI_UCODE_GP1_MAC_SLEEP) {
DPRINTF(sc, WPI_DEBUG_PWRSAVE, "%s: wakeup request\n",
__func__);
WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ);
ring->update = 1;
} else
WPI_WRITE(sc, WPI_FH_RX_WPTR, ring->cur & ~7);
}
static void
wpi_reset_rx_ring(struct wpi_softc *sc)
{
struct wpi_rx_ring *ring = &sc->rxq;
int ntries;
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);
if (wpi_nic_lock(sc) == 0) {
WPI_WRITE(sc, WPI_FH_RX_CONFIG, 0);
for (ntries = 0; ntries < 1000; ntries++) {
if (WPI_READ(sc, WPI_FH_RX_STATUS) &
WPI_FH_RX_STATUS_IDLE)
break;
DELAY(10);
}
wpi_nic_unlock(sc);
}
ring->cur = 0;
ring->update = 0;
}
static void
wpi_free_rx_ring(struct wpi_softc *sc)
{
struct wpi_rx_ring *ring = &sc->rxq;
int i;
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);
wpi_dma_contig_free(&ring->desc_dma);
for (i = 0; i < WPI_RX_RING_COUNT; i++) {
struct wpi_rx_data *data = &ring->data[i];
if (data->m != NULL) {
bus_dmamap_sync(ring->data_dmat, data->map,
BUS_DMASYNC_POSTREAD);
bus_dmamap_unload(ring->data_dmat, data->map);
m_freem(data->m);
data->m = NULL;
}
if (data->map != NULL)
bus_dmamap_destroy(ring->data_dmat, data->map);
}
if (ring->data_dmat != NULL) {
bus_dma_tag_destroy(ring->data_dmat);
ring->data_dmat = NULL;
}
}
static int
wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, int qid)
{
bus_addr_t paddr;
bus_size_t size;
int i, error;
ring->qid = qid;
ring->queued = 0;
ring->cur = 0;
ring->update = 0;
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__);
/* Allocate TX descriptors (16KB aligned.) */
size = WPI_TX_RING_COUNT * sizeof (struct wpi_tx_desc);
error = wpi_dma_contig_alloc(sc, &ring->desc_dma, (void **)&ring->desc,
size, WPI_RING_DMA_ALIGN);
if (error != 0) {
device_printf(sc->sc_dev,
"%s: could not allocate TX ring DMA memory, error %d\n",
__func__, error);
goto fail;
}
/* Update shared area with ring physical address. */
sc->shared->txbase[qid] = htole32(ring->desc_dma.paddr);
bus_dmamap_sync(sc->shared_dma.tag, sc->shared_dma.map,
BUS_DMASYNC_PREWRITE);
/*
* We only use rings 0 through 4 (4 EDCA + cmd) so there is no need
* to allocate commands space for other rings.
* XXX Do we really need to allocate descriptors for other rings?
*/
if (qid > WPI_CMD_QUEUE_NUM) {
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__);
return 0;
}
size = WPI_TX_RING_COUNT * sizeof (struct wpi_tx_cmd);
error = wpi_dma_contig_alloc(sc, &ring->cmd_dma, (void **)&ring->cmd,
size, 4);
if (error != 0) {
device_printf(sc->sc_dev,
"%s: could not allocate TX cmd DMA memory, error %d\n",
__func__, error);
goto fail;
}
error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES,
WPI_MAX_SCATTER - 1, MCLBYTES, BUS_DMA_NOWAIT, NULL, NULL,
&ring->data_dmat);
if (error != 0) {
device_printf(sc->sc_dev,
"%s: could not create TX buf DMA tag, error %d\n",
__func__, error);
goto fail;
}
paddr = ring->cmd_dma.paddr;
for (i = 0; i < WPI_TX_RING_COUNT; i++) {
struct wpi_tx_data *data = &ring->data[i];
data->cmd_paddr = paddr;
paddr += sizeof (struct wpi_tx_cmd);
error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
if (error != 0) {
device_printf(sc->sc_dev,
"%s: could not create TX buf DMA map, error %d\n",
__func__, error);
goto fail;
}
}
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__);
return 0;
fail: wpi_free_tx_ring(sc, ring);
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__);
return error;
}
static void
wpi_update_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring)
{
if (ring->update != 0) {
/* Wait for INT_WAKEUP event. */
return;
}
if (WPI_READ(sc, WPI_UCODE_GP1) & WPI_UCODE_GP1_MAC_SLEEP) {
DPRINTF(sc, WPI_DEBUG_PWRSAVE, "%s (%d): requesting wakeup\n",
__func__, ring->qid);
WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ);
ring->update = 1;
} else
WPI_WRITE(sc, WPI_HBUS_TARG_WRPTR, ring->qid << 8 | ring->cur);
}
static void
wpi_reset_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring)
{
int i;
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);
for (i = 0; i < WPI_TX_RING_COUNT; i++) {
struct wpi_tx_data *data = &ring->data[i];
if (data->m != NULL) {
bus_dmamap_sync(ring->data_dmat, data->map,
BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(ring->data_dmat, data->map);
m_freem(data->m);
data->m = NULL;
}
}
/* Clear TX descriptors. */
memset(ring->desc, 0, ring->desc_dma.size);
bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
BUS_DMASYNC_PREWRITE);
sc->qfullmsk &= ~(1 << ring->qid);
ring->queued = 0;
ring->cur = 0;
ring->update = 0;
}
static void
wpi_free_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring)
{
int i;
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);
wpi_dma_contig_free(&ring->desc_dma);
wpi_dma_contig_free(&ring->cmd_dma);
for (i = 0; i < WPI_TX_RING_COUNT; i++) {
struct wpi_tx_data *data = &ring->data[i];
if (data->m != NULL) {
bus_dmamap_sync(ring->data_dmat, data->map,
BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(ring->data_dmat, data->map);
m_freem(data->m);
}
if (data->map != NULL)
bus_dmamap_destroy(ring->data_dmat, data->map);
}
if (ring->data_dmat != NULL) {
bus_dma_tag_destroy(ring->data_dmat);
ring->data_dmat = NULL;
}
}
/*
* Extract various information from EEPROM.
*/
static int
wpi_read_eeprom(struct wpi_softc *sc, uint8_t macaddr[IEEE80211_ADDR_LEN])
{
#define WPI_CHK(res) do { \
if ((error = res) != 0) \
goto fail; \
} while (0)
int error, i;
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__);
/* Adapter has to be powered on for EEPROM access to work. */
if ((error = wpi_apm_init(sc)) != 0) {
device_printf(sc->sc_dev,
"%s: could not power ON adapter, error %d\n", __func__,
error);
return error;
}
if ((WPI_READ(sc, WPI_EEPROM_GP) & 0x6) == 0) {
device_printf(sc->sc_dev, "bad EEPROM signature\n");
error = EIO;
goto fail;
}
/* Clear HW ownership of EEPROM. */
WPI_CLRBITS(sc, WPI_EEPROM_GP, WPI_EEPROM_GP_IF_OWNER);
/* Read the hardware capabilities, revision and SKU type. */
WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_SKU_CAP, &sc->cap,
sizeof(sc->cap)));
WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_REVISION, &sc->rev,
sizeof(sc->rev)));
WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_TYPE, &sc->type,
sizeof(sc->type)));
sc->rev = le16toh(sc->rev);
DPRINTF(sc, WPI_DEBUG_EEPROM, "cap=%x rev=%x type=%x\n", sc->cap,
sc->rev, sc->type);
/* Read the regulatory domain (4 ASCII characters.) */
WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, sc->domain,
sizeof(sc->domain)));
/* Read MAC address. */
WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_MAC, macaddr,
IEEE80211_ADDR_LEN));
/* Read the list of authorized channels. */
for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++)
WPI_CHK(wpi_read_eeprom_channels(sc, i));
/* Read the list of TX power groups. */
for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++)
WPI_CHK(wpi_read_eeprom_group(sc, i));
fail: wpi_apm_stop(sc); /* Power OFF adapter. */
DPRINTF(sc, WPI_DEBUG_TRACE, error ? TRACE_STR_END_ERR : TRACE_STR_END,
__func__);
return error;
#undef WPI_CHK
}
/*
* Translate EEPROM flags to net80211.
*/
static uint32_t
wpi_eeprom_channel_flags(struct wpi_eeprom_chan *channel)
{
uint32_t nflags;
nflags = 0;
if ((channel->flags & WPI_EEPROM_CHAN_ACTIVE) == 0)
nflags |= IEEE80211_CHAN_PASSIVE;
if ((channel->flags & WPI_EEPROM_CHAN_IBSS) == 0)
nflags |= IEEE80211_CHAN_NOADHOC;
if (channel->flags & WPI_EEPROM_CHAN_RADAR) {
nflags |= IEEE80211_CHAN_DFS;
/* XXX apparently IBSS may still be marked */
nflags |= IEEE80211_CHAN_NOADHOC;
}
/* XXX HOSTAP uses WPI_MODE_IBSS */
if (nflags & IEEE80211_CHAN_NOADHOC)
nflags |= IEEE80211_CHAN_NOHOSTAP;
return nflags;
}
static void
wpi_read_eeprom_band(struct wpi_softc *sc, int n)
{
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
struct wpi_eeprom_chan *channels = sc->eeprom_channels[n];
const struct wpi_chan_band *band = &wpi_bands[n];
struct ieee80211_channel *c;
uint8_t chan;
int i, nflags;
for (i = 0; i < band->nchan; i++) {
if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) {
DPRINTF(sc, WPI_DEBUG_EEPROM,
"Channel Not Valid: %d, band %d\n",
band->chan[i],n);
continue;
}
chan = band->chan[i];
nflags = wpi_eeprom_channel_flags(&channels[i]);
c = &ic->ic_channels[ic->ic_nchans++];
c->ic_ieee = chan;
c->ic_maxregpower = channels[i].maxpwr;
c->ic_maxpower = 2*c->ic_maxregpower;
if (n == 0) { /* 2GHz band */
c->ic_freq = ieee80211_ieee2mhz(chan,
IEEE80211_CHAN_G);
/* G =>'s B is supported */
c->ic_flags = IEEE80211_CHAN_B | nflags;
c = &ic->ic_channels[ic->ic_nchans++];
c[0] = c[-1];
c->ic_flags = IEEE80211_CHAN_G | nflags;
} else { /* 5GHz band */
c->ic_freq = ieee80211_ieee2mhz(chan,
IEEE80211_CHAN_A);
c->ic_flags = IEEE80211_CHAN_A | nflags;
}
/* Save maximum allowed TX power for this channel. */
sc->maxpwr[chan] = channels[i].maxpwr;
DPRINTF(sc, WPI_DEBUG_EEPROM,
"adding chan %d (%dMHz) flags=0x%x maxpwr=%d passive=%d,"
" offset %d\n", chan, c->ic_freq,
channels[i].flags, sc->maxpwr[chan],
IEEE80211_IS_CHAN_PASSIVE(c), ic->ic_nchans);
}
}
/**
* Read the eeprom to find out what channels are valid for the given
* band and update net80211 with what we find.
*/
static int
wpi_read_eeprom_channels(struct wpi_softc *sc, int n)
{
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
const struct wpi_chan_band *band = &wpi_bands[n];
int error;
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__);
error = wpi_read_prom_data(sc, band->addr, &sc->eeprom_channels[n],
band->nchan * sizeof (struct wpi_eeprom_chan));
if (error != 0) {
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__);
return error;
}
wpi_read_eeprom_band(sc, n);
ieee80211_sort_channels(ic->ic_channels, ic->ic_nchans);
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__);
return 0;
}
static struct wpi_eeprom_chan *
wpi_find_eeprom_channel(struct wpi_softc *sc, struct ieee80211_channel *c)
{
int i, j;
for (j = 0; j < WPI_CHAN_BANDS_COUNT; j++)
for (i = 0; i < wpi_bands[j].nchan; i++)
if (wpi_bands[j].chan[i] == c->ic_ieee)
return &sc->eeprom_channels[j][i];
return NULL;
}
/*
* Enforce flags read from EEPROM.
*/
static int
wpi_setregdomain(struct ieee80211com *ic, struct ieee80211_regdomain *rd,
int nchan, struct ieee80211_channel chans[])
{
struct ifnet *ifp = ic->ic_ifp;
struct wpi_softc *sc = ifp->if_softc;
int i;
for (i = 0; i < nchan; i++) {
struct ieee80211_channel *c = &chans[i];
struct wpi_eeprom_chan *channel;
channel = wpi_find_eeprom_channel(sc, c);
if (channel == NULL) {
if_printf(ic->ic_ifp,
"%s: invalid channel %u freq %u/0x%x\n",
__func__, c->ic_ieee, c->ic_freq, c->ic_flags);
return EINVAL;
}
c->ic_flags |= wpi_eeprom_channel_flags(channel);
}
return 0;
}
static int
wpi_read_eeprom_group(struct wpi_softc *sc, int n)
{
struct wpi_power_group *group = &sc->groups[n];
struct wpi_eeprom_group rgroup;
int i, error;
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__);
if ((error = wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32,
&rgroup, sizeof rgroup)) != 0) {
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__);
return error;
}
/* Save TX power group information. */
group->chan = rgroup.chan;
group->maxpwr = rgroup.maxpwr;
/* Retrieve temperature at which the samples were taken. */
group->temp = (int16_t)le16toh(rgroup.temp);
DPRINTF(sc, WPI_DEBUG_EEPROM,
"power group %d: chan=%d maxpwr=%d temp=%d\n", n, group->chan,
group->maxpwr, group->temp);
for (i = 0; i < WPI_SAMPLES_COUNT; i++) {
group->samples[i].index = rgroup.samples[i].index;
group->samples[i].power = rgroup.samples[i].power;
DPRINTF(sc, WPI_DEBUG_EEPROM,
"\tsample %d: index=%d power=%d\n", i,
group->samples[i].index, group->samples[i].power);
}
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__);
return 0;
}
static int
wpi_add_node_entry_adhoc(struct wpi_softc *sc)
{
int newid = WPI_ID_IBSS_MIN;
for (; newid <= WPI_ID_IBSS_MAX; newid++) {
if ((sc->nodesmsk & (1 << newid)) == 0) {
sc->nodesmsk |= 1 << newid;
return newid;
}
}
return WPI_ID_UNDEFINED;
}
static __inline int
wpi_add_node_entry_sta(struct wpi_softc *sc)
{
sc->nodesmsk |= 1 << WPI_ID_BSS;
return WPI_ID_BSS;
}
static __inline int
wpi_check_node_entry(struct wpi_softc *sc, uint8_t id)
{
if (id == WPI_ID_UNDEFINED)
return 0;
return (sc->nodesmsk >> id) & 1;
}
static __inline void
wpi_clear_node_table(struct wpi_softc *sc)
{
sc->nodesmsk = 0;
}
static __inline void
wpi_del_node_entry(struct wpi_softc *sc, uint8_t id)
{
sc->nodesmsk &= ~(1 << id);
}
static struct ieee80211_node *
wpi_node_alloc(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN])
{
struct wpi_node *wn;
wn = malloc(sizeof (struct wpi_node), M_80211_NODE,
M_NOWAIT | M_ZERO);
if (wn == NULL)
return NULL;
wn->id = WPI_ID_UNDEFINED;
return &wn->ni;
}
static void
wpi_node_free(struct ieee80211_node *ni)
{
struct ieee80211com *ic = ni->ni_ic;
struct wpi_softc *sc = ic->ic_ifp->if_softc;
struct wpi_node *wn = WPI_NODE(ni);
if (wn->id != WPI_ID_UNDEFINED) {
WPI_NT_LOCK(sc);
if (wpi_check_node_entry(sc, wn->id)) {
wpi_del_node_entry(sc, wn->id);
wpi_del_node(sc, ni);
}
WPI_NT_UNLOCK(sc);
}
sc->sc_node_free(ni);
}
static __inline int
wpi_check_bss_filter(struct wpi_softc *sc)
{
return (sc->rxon.filter & htole32(WPI_FILTER_BSS)) != 0;
}
/**
* Called by net80211 when ever there is a change to 80211 state machine
*/
static int
wpi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
{
struct wpi_vap *wvp = WPI_VAP(vap);
struct ieee80211com *ic = vap->iv_ic;
struct ifnet *ifp = ic->ic_ifp;
struct wpi_softc *sc = ifp->if_softc;
int error = 0;
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__);
DPRINTF(sc, WPI_DEBUG_STATE, "%s: %s -> %s\n", __func__,
ieee80211_state_name[vap->iv_state],
ieee80211_state_name[nstate]);
if (vap->iv_state == IEEE80211_S_RUN && nstate != IEEE80211_S_RUN) {
if ((error = wpi_set_pslevel(sc, 0, 0, 1)) != 0) {
device_printf(sc->sc_dev,
"%s: could not set power saving level\n",
__func__);
return error;
}
}
switch (nstate) {
case IEEE80211_S_SCAN:
WPI_RXON_LOCK(sc);
if (wpi_check_bss_filter(sc) != 0 &&
vap->iv_opmode != IEEE80211_M_STA) {
sc->rxon.filter &= ~htole32(WPI_FILTER_BSS);
if ((error = wpi_send_rxon(sc, 0, 1)) != 0) {
device_printf(sc->sc_dev,
"%s: could not send RXON\n", __func__);
}
}
WPI_RXON_UNLOCK(sc);
break;
case IEEE80211_S_ASSOC:
if (vap->iv_state != IEEE80211_S_RUN)
break;
/* FALLTHROUGH */
case IEEE80211_S_AUTH:
/*
* The node must be registered in the firmware before auth.
* Also the associd must be cleared on RUN -> ASSOC
* transitions.
*/
if ((error = wpi_auth(sc, vap)) != 0) {
device_printf(sc->sc_dev,
"%s: could not move to AUTH state, error %d\n",
__func__, error);
}
break;
case IEEE80211_S_RUN:
/*
* RUN -> RUN transition; Just restart the timers.
*/
if (vap->iv_state == IEEE80211_S_RUN) {
WPI_RXON_LOCK(sc);
wpi_calib_timeout(sc);
WPI_RXON_UNLOCK(sc);
break;
}
/*
* !RUN -> RUN requires setting the association id
* which is done with a firmware cmd. We also defer
* starting the timers until that work is done.
*/
if ((error = wpi_run(sc, vap)) != 0) {
device_printf(sc->sc_dev,
"%s: could not move to RUN state\n", __func__);
}
break;
default:
break;
}
if (error != 0) {
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__);
return error;
}
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__);
return wvp->wv_newstate(vap, nstate, arg);
}
static void
wpi_calib_timeout(void *arg)
{
struct wpi_softc *sc = arg;
if (wpi_check_bss_filter(sc) == 0)
return;
wpi_power_calibration(sc);
callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc);
}
static __inline uint8_t
rate2plcp(const uint8_t rate)
{
switch (rate) {
case 12: return 0xd;
case 18: return 0xf;
case 24: return 0x5;
case 36: return 0x7;
case 48: return 0x9;
case 72: return 0xb;
case 96: return 0x1;
case 108: return 0x3;
case 2: return 10;
case 4: return 20;
case 11: return 55;
case 22: return 110;
default: return 0;
}
}
static __inline uint8_t
plcp2rate(const uint8_t plcp)
{
switch (plcp) {
case 0xd: return 12;
case 0xf: return 18;
case 0x5: return 24;
case 0x7: return 36;
case 0x9: return 48;
case 0xb: return 72;
case 0x1: return 96;
case 0x3: return 108;
case 10: return 2;
case 20: return 4;
case 55: return 11;
case 110: return 22;
default: return 0;
}
}
/* Quickly determine if a given rate is CCK or OFDM. */
#define WPI_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22)
static void
wpi_rx_done(struct wpi_softc *sc, struct wpi_rx_desc *desc,
struct wpi_rx_data *data)
{
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
struct wpi_rx_ring *ring = &sc->rxq;
struct wpi_rx_stat *stat;
struct wpi_rx_head *head;
struct wpi_rx_tail *tail;
struct ieee80211_frame *wh;
struct ieee80211_node *ni;
struct mbuf *m, *m1;
bus_addr_t paddr;
uint32_t flags;
uint16_t len;
int error;
stat = (struct wpi_rx_stat *)(desc + 1);
if (stat->len > WPI_STAT_MAXLEN) {
device_printf(sc->sc_dev, "invalid RX statistic header\n");
goto fail1;
}
bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTREAD);
head = (struct wpi_rx_head *)((caddr_t)(stat + 1) + stat->len);
len = le16toh(head->len);
tail = (struct wpi_rx_tail *)((caddr_t)(head + 1) + len);
flags = le32toh(tail->flags);
DPRINTF(sc, WPI_DEBUG_RECV, "%s: idx %d len %d stat len %u rssi %d"
" rate %x chan %d tstamp %ju\n", __func__, ring->cur,
le32toh(desc->len), len, (int8_t)stat->rssi,
head->plcp, head->chan, (uintmax_t)le64toh(tail->tstamp));
/* Discard frames with a bad FCS early. */
if ((flags & WPI_RX_NOERROR) != WPI_RX_NOERROR) {
DPRINTF(sc, WPI_DEBUG_RECV, "%s: RX flags error %x\n",
__func__, flags);
goto fail1;
}
/* Discard frames that are too short. */
if (len < sizeof (*wh)) {
DPRINTF(sc, WPI_DEBUG_RECV, "%s: frame too short: %d\n",
__func__, len);
goto fail1;
}
m1 = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE);
if (m1 == NULL) {
DPRINTF(sc, WPI_DEBUG_ANY, "%s: no mbuf to restock ring\n",
__func__);
goto fail1;
}
bus_dmamap_unload(ring->data_dmat, data->map);
error = bus_dmamap_load(ring->data_dmat, data->map, mtod(m1, void *),
MJUMPAGESIZE, wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT);
if (error != 0 && error != EFBIG) {
device_printf(sc->sc_dev,
"%s: bus_dmamap_load failed, error %d\n", __func__, error);
m_freem(m1);
/* Try to reload the old mbuf. */
error = bus_dmamap_load(ring->data_dmat, data->map,
mtod(data->m, void *), MJUMPAGESIZE, wpi_dma_map_addr,
&paddr, BUS_DMA_NOWAIT);
if (error != 0 && error != EFBIG) {
panic("%s: could not load old RX mbuf", __func__);
}
/* Physical address may have changed. */
ring->desc[ring->cur] = htole32(paddr);
bus_dmamap_sync(ring->data_dmat, ring->desc_dma.map,
BUS_DMASYNC_PREWRITE);
goto fail1;
}
m = data->m;
data->m = m1;
/* Update RX descriptor. */
ring->desc[ring->cur] = htole32(paddr);
bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
BUS_DMASYNC_PREWRITE);
/* Finalize mbuf. */
m->m_pkthdr.rcvif = ifp;
m->m_data = (caddr_t)(head + 1);
m->m_pkthdr.len = m->m_len = len;
/* Grab a reference to the source node. */
wh = mtod(m, struct ieee80211_frame *);
if ((wh->i_fc[1] & IEEE80211_FC1_PROTECTED) &&
(flags & WPI_RX_CIPHER_MASK) == WPI_RX_CIPHER_CCMP) {
/* Check whether decryption was successful or not. */
if ((flags & WPI_RX_DECRYPT_MASK) != WPI_RX_DECRYPT_OK) {
DPRINTF(sc, WPI_DEBUG_RECV,
"CCMP decryption failed 0x%x\n", flags);
goto fail2;
}
m->m_flags |= M_WEP;
}
ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh);
if (ieee80211_radiotap_active(ic)) {
struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap;
tap->wr_flags = 0;
if (head->flags & htole16(WPI_STAT_FLAG_SHPREAMBLE))
tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
tap->wr_dbm_antsignal = (int8_t)(stat->rssi + WPI_RSSI_OFFSET);
tap->wr_dbm_antnoise = WPI_RSSI_OFFSET;
tap->wr_tsft = tail->tstamp;
tap->wr_antenna = (le16toh(head->flags) >> 4) & 0xf;
tap->wr_rate = plcp2rate(head->plcp);
}
WPI_UNLOCK(sc);
/* Send the frame to the 802.11 layer. */
if (ni != NULL) {
(void)ieee80211_input(ni, m, stat->rssi, WPI_RSSI_OFFSET);
/* Node is no longer needed. */
ieee80211_free_node(ni);
} else
(void)ieee80211_input_all(ic, m, stat->rssi, WPI_RSSI_OFFSET);
WPI_LOCK(sc);
return;
fail2: m_freem(m);
fail1: if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
}
static void
wpi_rx_statistics(struct wpi_softc *sc, struct wpi_rx_desc *desc,
struct wpi_rx_data *data)
{
/* Ignore */
}
static void
wpi_tx_done(struct wpi_softc *sc, struct wpi_rx_desc *desc)
{
struct ifnet *ifp = sc->sc_ifp;
struct wpi_tx_ring *ring = &sc->txq[desc->qid & 0x3];
struct wpi_tx_data *data = &ring->data[desc->idx];
struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1);
struct mbuf *m;
struct ieee80211_node *ni;
struct ieee80211vap *vap;
struct ieee80211com *ic;
uint32_t status = le32toh(stat->status);
int ackfailcnt = stat->ackfailcnt / WPI_NTRIES_DEFAULT;
KASSERT(data->ni != NULL, ("no node"));
KASSERT(data->m != NULL, ("no mbuf"));
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__);
DPRINTF(sc, WPI_DEBUG_XMIT, "%s: "
"qid %d idx %d retries %d btkillcnt %d rate %x duration %d "
"status %x\n", __func__, desc->qid, desc->idx, stat->ackfailcnt,
stat->btkillcnt, stat->rate, le32toh(stat->duration), status);
/* Unmap and free mbuf. */
bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(ring->data_dmat, data->map);
m = data->m, data->m = NULL;
ni = data->ni, data->ni = NULL;
vap = ni->ni_vap;
ic = vap->iv_ic;
/*
* Update rate control statistics for the node.
*/
if (status & WPI_TX_STATUS_FAIL) {
if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
ieee80211_ratectl_tx_complete(vap, ni,
IEEE80211_RATECTL_TX_FAILURE, &ackfailcnt, NULL);
} else {
if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1);
ieee80211_ratectl_tx_complete(vap, ni,
IEEE80211_RATECTL_TX_SUCCESS, &ackfailcnt, NULL);
}
ieee80211_tx_complete(ni, m, (status & WPI_TX_STATUS_FAIL) != 0);
WPI_TXQ_STATE_LOCK(sc);
ring->queued -= 1;
if (ring->queued > 0) {
callout_reset(&sc->tx_timeout, 5*hz, wpi_tx_timeout, sc);
if (sc->qfullmsk != 0 &&
ring->queued < WPI_TX_RING_LOMARK) {
sc->qfullmsk &= ~(1 << ring->qid);
IF_LOCK(&ifp->if_snd);
if (sc->qfullmsk == 0 &&
(ifp->if_drv_flags & IFF_DRV_OACTIVE)) {
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
IF_UNLOCK(&ifp->if_snd);
ieee80211_runtask(ic, &sc->sc_start_task);
} else
IF_UNLOCK(&ifp->if_snd);
}
} else
callout_stop(&sc->tx_timeout);
WPI_TXQ_STATE_UNLOCK(sc);
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__);
}
/*
* Process a "command done" firmware notification. This is where we wakeup
* processes waiting for a synchronous command completion.
*/
static void
wpi_cmd_done(struct wpi_softc *sc, struct wpi_rx_desc *desc)
{
struct wpi_tx_ring *ring = &sc->txq[WPI_CMD_QUEUE_NUM];
struct wpi_tx_data *data;
DPRINTF(sc, WPI_DEBUG_CMD, "cmd notification qid %x idx %d flags %x "
"type %s len %d\n", desc->qid, desc->idx,
desc->flags, wpi_cmd_str(desc->type),
le32toh(desc->len));
if ((desc->qid & WPI_RX_DESC_QID_MSK) != WPI_CMD_QUEUE_NUM)
return; /* Not a command ack. */
KASSERT(ring->queued == 0, ("ring->queued must be 0"));
data = &ring->data[desc->idx];
/* If the command was mapped in an mbuf, free it. */
if (data->m != NULL) {
bus_dmamap_sync(ring->data_dmat, data->map,
BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(ring->data_dmat, data->map);
m_freem(data->m);
data->m = NULL;
}
wakeup(&ring->cmd[desc->idx]);
}
static void
wpi_notif_intr(struct wpi_softc *sc)
{
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
uint32_t hw;
bus_dmamap_sync(sc->shared_dma.tag, sc->shared_dma.map,
BUS_DMASYNC_POSTREAD);
hw = le32toh(sc->shared->next);
hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1;
while (sc->rxq.cur != hw) {
sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT;
struct wpi_rx_data *data = &sc->rxq.data[sc->rxq.cur];
struct wpi_rx_desc *desc;
bus_dmamap_sync(sc->rxq.data_dmat, data->map,
BUS_DMASYNC_POSTREAD);
desc = mtod(data->m, struct wpi_rx_desc *);
DPRINTF(sc, WPI_DEBUG_NOTIFY,
"%s: cur=%d; qid %x idx %d flags %x type %d(%s) len %d\n",
__func__, sc->rxq.cur, desc->qid, desc->idx, desc->flags,
desc->type, wpi_cmd_str(desc->type), le32toh(desc->len));
if (!(desc->qid & WPI_UNSOLICITED_RX_NOTIF)) {
/* Reply to a command. */
wpi_cmd_done(sc, desc);
}
switch (desc->type) {
case WPI_RX_DONE:
/* An 802.11 frame has been received. */
wpi_rx_done(sc, desc, data);
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
/* wpi_stop() was called. */
return;
}
break;
case WPI_TX_DONE:
/* An 802.11 frame has been transmitted. */
wpi_tx_done(sc, desc);
break;
case WPI_RX_STATISTICS:
case WPI_BEACON_STATISTICS:
wpi_rx_statistics(sc, desc, data);
break;
case WPI_BEACON_MISSED:
{
struct wpi_beacon_missed *miss =
(struct wpi_beacon_missed *)(desc + 1);
uint32_t misses;
bus_dmamap_sync(sc->rxq.data_dmat, data->map,
BUS_DMASYNC_POSTREAD);
misses = le32toh(miss->consecutive);
DPRINTF(sc, WPI_DEBUG_STATE,
"%s: beacons missed %d/%d\n", __func__, misses,
le32toh(miss->total));
if (vap->iv_state == IEEE80211_S_RUN &&
(ic->ic_flags & IEEE80211_F_SCAN) == 0 &&
misses >= vap->iv_bmissthreshold)
ieee80211_beacon_miss(ic);
break;
}
case WPI_UC_READY:
{
struct wpi_ucode_info *uc =
(struct wpi_ucode_info *)(desc + 1);
/* The microcontroller is ready. */
bus_dmamap_sync(sc->rxq.data_dmat, data->map,
BUS_DMASYNC_POSTREAD);
DPRINTF(sc, WPI_DEBUG_RESET,
"microcode alive notification version=%d.%d "
"subtype=%x alive=%x\n", uc->major, uc->minor,
uc->subtype, le32toh(uc->valid));
if (le32toh(uc->valid) != 1) {
device_printf(sc->sc_dev,
"microcontroller initialization failed\n");
wpi_stop_locked(sc);
}
/* Save the address of the error log in SRAM. */
sc->errptr = le32toh(uc->errptr);
break;
}
case WPI_STATE_CHANGED:
{
bus_dmamap_sync(sc->rxq.data_dmat, data->map,
BUS_DMASYNC_POSTREAD);
uint32_t *status = (uint32_t *)(desc + 1);
DPRINTF(sc, WPI_DEBUG_STATE, "state changed to %x\n",
le32toh(*status));
if (le32toh(*status) & 1) {
WPI_NT_LOCK(sc);
wpi_clear_node_table(sc);
WPI_NT_UNLOCK(sc);
taskqueue_enqueue(sc->sc_tq,
&sc->sc_radiooff_task);
return;
}
break;
}
case WPI_START_SCAN:
{
bus_dmamap_sync(sc->rxq.data_dmat, data->map,
BUS_DMASYNC_POSTREAD);
#ifdef WPI_DEBUG
struct wpi_start_scan *scan =
(struct wpi_start_scan *)(desc + 1);
DPRINTF(sc, WPI_DEBUG_SCAN,
"%s: scanning channel %d status %x\n",
__func__, scan->chan, le32toh(scan->status));
#endif
break;
}
case WPI_STOP_SCAN:
{
bus_dmamap_sync(sc->rxq.data_dmat, data->map,
BUS_DMASYNC_POSTREAD);
#ifdef WPI_DEBUG
struct wpi_stop_scan *scan =
(struct wpi_stop_scan *)(desc + 1);
DPRINTF(sc, WPI_DEBUG_SCAN,
"scan finished nchan=%d status=%d chan=%d\n",
scan->nchan, scan->status, scan->chan);
#endif
WPI_RXON_LOCK(sc);
callout_stop(&sc->scan_timeout);
WPI_RXON_UNLOCK(sc);
ieee80211_scan_next(vap);
break;
}
}
if (sc->rxq.cur % 8 == 0) {
/* Tell the firmware what we have processed. */
wpi_update_rx_ring(sc);
}
}
}
/*
* Process an INT_WAKEUP interrupt raised when the microcontroller wakes up
* from power-down sleep mode.
*/
static void
wpi_wakeup_intr(struct wpi_softc *sc)
{
int qid;
DPRINTF(sc, WPI_DEBUG_PWRSAVE,
"%s: ucode wakeup from power-down sleep\n", __func__);
/* Wakeup RX and TX rings. */
if (sc->rxq.update) {
sc->rxq.update = 0;
wpi_update_rx_ring(sc);
}
WPI_TXQ_LOCK(sc);
for (qid = 0; qid < WPI_DRV_NTXQUEUES; qid++) {
struct wpi_tx_ring *ring = &sc->txq[qid];
if (ring->update) {
ring->update = 0;
wpi_update_tx_ring(sc, ring);
}
}
WPI_TXQ_UNLOCK(sc);
WPI_CLRBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ);
}
/*
* This function prints firmware registers
*/
#ifdef WPI_DEBUG
static void
wpi_debug_registers(struct wpi_softc *sc)
{
#define COUNTOF(array) (sizeof(array) / sizeof(array[0]))
int i;
static const uint32_t csr_tbl[] = {
WPI_HW_IF_CONFIG,
WPI_INT,
WPI_INT_MASK,
WPI_FH_INT,
WPI_GPIO_IN,
WPI_RESET,
WPI_GP_CNTRL,
WPI_EEPROM,
WPI_EEPROM_GP,
WPI_GIO,
WPI_UCODE_GP1,
WPI_UCODE_GP2,
WPI_GIO_CHICKEN,
WPI_ANA_PLL,
WPI_DBG_HPET_MEM,
};
static const uint32_t prph_tbl[] = {
WPI_APMG_CLK_CTRL,
WPI_APMG_PS,
WPI_APMG_PCI_STT,
WPI_APMG_RFKILL,
};
DPRINTF(sc, WPI_DEBUG_REGISTER,"%s","\n");
for (i = 0; i < COUNTOF(csr_tbl); i++) {
DPRINTF(sc, WPI_DEBUG_REGISTER, " %-18s: 0x%08x ",
wpi_get_csr_string(csr_tbl[i]), WPI_READ(sc, csr_tbl[i]));
if ((i + 1) % 2 == 0)
DPRINTF(sc, WPI_DEBUG_REGISTER, "\n");
}
DPRINTF(sc, WPI_DEBUG_REGISTER, "\n\n");
if (wpi_nic_lock(sc) == 0) {
for (i = 0; i < COUNTOF(prph_tbl); i++) {
DPRINTF(sc, WPI_DEBUG_REGISTER, " %-18s: 0x%08x ",
wpi_get_prph_string(prph_tbl[i]),
wpi_prph_read(sc, prph_tbl[i]));
if ((i + 1) % 2 == 0)
DPRINTF(sc, WPI_DEBUG_REGISTER, "\n");
}
DPRINTF(sc, WPI_DEBUG_REGISTER, "\n");
wpi_nic_unlock(sc);
} else {
DPRINTF(sc, WPI_DEBUG_REGISTER,
"Cannot access internal registers.\n");
}
#undef COUNTOF
}
#endif
/*
* Dump the error log of the firmware when a firmware panic occurs. Although
* we can't debug the firmware because it is neither open source nor free, it
* can help us to identify certain classes of problems.
*/
static void
wpi_fatal_intr(struct wpi_softc *sc)
{
struct wpi_fw_dump dump;
uint32_t i, offset, count;
const uint32_t size_errmsg =
(sizeof (wpi_fw_errmsg) / sizeof ((wpi_fw_errmsg)[0]));
/* Check that the error log address is valid. */
if (sc->errptr < WPI_FW_DATA_BASE ||
sc->errptr + sizeof (dump) >
WPI_FW_DATA_BASE + WPI_FW_DATA_MAXSZ) {
printf("%s: bad firmware error log address 0x%08x\n", __func__,
sc->errptr);
return;
}
if (wpi_nic_lock(sc) != 0) {
printf("%s: could not read firmware error log\n", __func__);
return;
}
/* Read number of entries in the log. */
count = wpi_mem_read(sc, sc->errptr);
if (count == 0 || count * sizeof (dump) > WPI_FW_DATA_MAXSZ) {
printf("%s: invalid count field (count = %u)\n", __func__,
count);
wpi_nic_unlock(sc);
return;
}
/* Skip "count" field. */
offset = sc->errptr + sizeof (uint32_t);
printf("firmware error log (count = %u):\n", count);
for (i = 0; i < count; i++) {
wpi_mem_read_region_4(sc, offset, (uint32_t *)&dump,
sizeof (dump) / sizeof (uint32_t));
printf(" error type = \"%s\" (0x%08X)\n",
(dump.desc < size_errmsg) ?
wpi_fw_errmsg[dump.desc] : "UNKNOWN",
dump.desc);
printf(" error data = 0x%08X\n",
dump.data);
printf(" branch link = 0x%08X%08X\n",
dump.blink[0], dump.blink[1]);
printf(" interrupt link = 0x%08X%08X\n",
dump.ilink[0], dump.ilink[1]);
printf(" time = %u\n", dump.time);
offset += sizeof (dump);
}
wpi_nic_unlock(sc);
/* Dump driver status (TX and RX rings) while we're here. */
printf("driver status:\n");
WPI_TXQ_LOCK(sc);
for (i = 0; i < WPI_DRV_NTXQUEUES; i++) {
struct wpi_tx_ring *ring = &sc->txq[i];
printf(" tx ring %2d: qid=%-2d cur=%-3d queued=%-3d\n",
i, ring->qid, ring->cur, ring->queued);
}
WPI_TXQ_UNLOCK(sc);
printf(" rx ring: cur=%d\n", sc->rxq.cur);
}
static void
wpi_intr(void *arg)
{
struct wpi_softc *sc = arg;
struct ifnet *ifp = sc->sc_ifp;
uint32_t r1, r2;
WPI_LOCK(sc);
/* Disable interrupts. */
WPI_WRITE(sc, WPI_INT_MASK, 0);
r1 = WPI_READ(sc, WPI_INT);
if (r1 == 0xffffffff || (r1 & 0xfffffff0) == 0xa5a5a5a0)
goto end; /* Hardware gone! */
r2 = WPI_READ(sc, WPI_FH_INT);
DPRINTF(sc, WPI_DEBUG_INTR, "%s: reg1=0x%08x reg2=0x%08x\n", __func__,
r1, r2);
if (r1 == 0 && r2 == 0)
goto done; /* Interrupt not for us. */
/* Acknowledge interrupts. */
WPI_WRITE(sc, WPI_INT, r1);
WPI_WRITE(sc, WPI_FH_INT, r2);
if (r1 & (WPI_INT_SW_ERR | WPI_INT_HW_ERR)) {
device_printf(sc->sc_dev, "fatal firmware error\n");
#ifdef WPI_DEBUG
wpi_debug_registers(sc);
#endif
wpi_fatal_intr(sc);
DPRINTF(sc, WPI_DEBUG_HW,
"(%s)\n", (r1 & WPI_INT_SW_ERR) ? "(Software Error)" :
"(Hardware Error)");
taskqueue_enqueue(sc->sc_tq, &sc->sc_reinittask);
goto end;
}
if ((r1 & (WPI_INT_FH_RX | WPI_INT_SW_RX)) ||
(r2 & WPI_FH_INT_RX))
wpi_notif_intr(sc);
if (r1 & WPI_INT_ALIVE)
wakeup(sc); /* Firmware is alive. */
if (r1 & WPI_INT_WAKEUP)
wpi_wakeup_intr(sc);
done:
/* Re-enable interrupts. */
if (ifp->if_flags & IFF_UP)
WPI_WRITE(sc, WPI_INT_MASK, WPI_INT_MASK_DEF);
end: WPI_UNLOCK(sc);
}
static int
wpi_cmd2(struct wpi_softc *sc, struct wpi_buf *buf)
{
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211_frame *wh;
struct wpi_tx_cmd *cmd;
struct wpi_tx_data *data;
struct wpi_tx_desc *desc;
struct wpi_tx_ring *ring;
struct mbuf *m1;
bus_dma_segment_t *seg, segs[WPI_MAX_SCATTER];
int error, i, hdrlen, nsegs, totlen, pad;
WPI_TXQ_LOCK(sc);
KASSERT(buf->size <= sizeof(buf->data), ("buffer overflow"));
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__);
if (sc->txq_active == 0) {
/* wpi_stop() was called */
error = ENETDOWN;
goto fail;
}
wh = mtod(buf->m, struct ieee80211_frame *);
hdrlen = ieee80211_anyhdrsize(wh);
totlen = buf->m->m_pkthdr.len;
if (hdrlen & 3) {
/* First segment length must be a multiple of 4. */
pad = 4 - (hdrlen & 3);
} else
pad = 0;
ring = &sc->txq[buf->ac];
desc = &ring->desc[ring->cur];
data = &ring->data[ring->cur];
/* Prepare TX firmware command. */
cmd = &ring->cmd[ring->cur];
cmd->code = buf->code;
cmd->flags = 0;
cmd->qid = ring->qid;
cmd->idx = ring->cur;
memcpy(cmd->data, buf->data, buf->size);
/* Save and trim IEEE802.11 header. */
memcpy((uint8_t *)(cmd->data + buf->size), wh, hdrlen);
m_adj(buf->m, hdrlen);
error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, buf->m,
segs, &nsegs, BUS_DMA_NOWAIT);
if (error != 0 && error != EFBIG) {
device_printf(sc->sc_dev,
"%s: can't map mbuf (error %d)\n", __func__, error);
goto fail;
}
if (error != 0) {
/* Too many DMA segments, linearize mbuf. */
m1 = m_collapse(buf->m, M_NOWAIT, WPI_MAX_SCATTER - 1);
if (m1 == NULL) {
device_printf(sc->sc_dev,
"%s: could not defrag mbuf\n", __func__);
error = ENOBUFS;
goto fail;
}
buf->m = m1;
error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map,
buf->m, segs, &nsegs, BUS_DMA_NOWAIT);
if (error != 0) {
device_printf(sc->sc_dev,
"%s: can't map mbuf (error %d)\n", __func__,
error);
goto fail;
}
}
KASSERT(nsegs < WPI_MAX_SCATTER,
("too many DMA segments, nsegs (%d) should be less than %d",
nsegs, WPI_MAX_SCATTER));
data->m = buf->m;
data->ni = buf->ni;
DPRINTF(sc, WPI_DEBUG_XMIT, "%s: qid %d idx %d len %d nsegs %d\n",
__func__, ring->qid, ring->cur, totlen, nsegs);
/* Fill TX descriptor. */
desc->nsegs = WPI_PAD32(totlen + pad) << 4 | (1 + nsegs);
/* First DMA segment is used by the TX command. */
desc->segs[0].addr = htole32(data->cmd_paddr);
desc->segs[0].len = htole32(4 + buf->size + hdrlen + pad);
/* Other DMA segments are for data payload. */
seg = &segs[0];
for (i = 1; i <= nsegs; i++) {
desc->segs[i].addr = htole32(seg->ds_addr);
desc->segs[i].len = htole32(seg->ds_len);
seg++;
}
bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE);
bus_dmamap_sync(ring->data_dmat, ring->cmd_dma.map,
BUS_DMASYNC_PREWRITE);
bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
BUS_DMASYNC_PREWRITE);
/* Kick TX ring. */
ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT;
wpi_update_tx_ring(sc, ring);
if (ring->qid < WPI_CMD_QUEUE_NUM) {
/* Mark TX ring as full if we reach a certain threshold. */
WPI_TXQ_STATE_LOCK(sc);
if (++ring->queued > WPI_TX_RING_HIMARK) {
sc->qfullmsk |= 1 << ring->qid;
IF_LOCK(&ifp->if_snd);
ifp->if_drv_flags |= IFF_DRV_OACTIVE;
IF_UNLOCK(&ifp->if_snd);
}
callout_reset(&sc->tx_timeout, 5*hz, wpi_tx_timeout, sc);
WPI_TXQ_STATE_UNLOCK(sc);
}
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__);
WPI_TXQ_UNLOCK(sc);
return 0;
fail: m_freem(buf->m);
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__);
WPI_TXQ_UNLOCK(sc);
return error;
}
/*
* Construct the data packet for a transmit buffer.
*/
static int
wpi_tx_data(struct wpi_softc *sc, struct mbuf *m, struct ieee80211_node *ni)
{
const struct ieee80211_txparam *tp;
struct ieee80211vap *vap = ni->ni_vap;
struct ieee80211com *ic = ni->ni_ic;
struct wpi_node *wn = WPI_NODE(ni);
struct ieee80211_channel *chan;
struct ieee80211_frame *wh;
struct ieee80211_key *k = NULL;
struct wpi_buf tx_data;
struct wpi_cmd_data *tx = (struct wpi_cmd_data *)&tx_data.data;
uint32_t flags;
uint16_t qos;
uint8_t tid, type;
int ac, error, swcrypt, rate, ismcast, totlen;
wh = mtod(m, struct ieee80211_frame *);
type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1);
/* Select EDCA Access Category and TX ring for this frame. */
if (IEEE80211_QOS_HAS_SEQ(wh)) {
qos = ((const struct ieee80211_qosframe *)wh)->i_qos[0];
tid = qos & IEEE80211_QOS_TID;
} else {
qos = 0;
tid = 0;
}
ac = M_WME_GETAC(m);
chan = (ni->ni_chan != IEEE80211_CHAN_ANYC) ?
ni->ni_chan : ic->ic_curchan;
tp = &vap->iv_txparms[ieee80211_chan2mode(chan)];
/* Choose a TX rate index. */
if (type == IEEE80211_FC0_TYPE_MGT)
rate = tp->mgmtrate;
else if (ismcast)
rate = tp->mcastrate;
else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE)
rate = tp->ucastrate;
else if (m->m_flags & M_EAPOL)
rate = tp->mgmtrate;
else {
/* XXX pass pktlen */
(void) ieee80211_ratectl_rate(ni, NULL, 0);
rate = ni->ni_txrate;
}
/* Encrypt the frame if need be. */
if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) {
/* Retrieve key for TX. */
k = ieee80211_crypto_encap(ni, m);
if (k == NULL) {
error = ENOBUFS;
goto fail;
}
swcrypt = k->wk_flags & IEEE80211_KEY_SWCRYPT;
/* 802.11 header may have moved. */
wh = mtod(m, struct ieee80211_frame *);
}
totlen = m->m_pkthdr.len;
if (ieee80211_radiotap_active_vap(vap)) {
struct wpi_tx_radiotap_header *tap = &sc->sc_txtap;
tap->wt_flags = 0;
tap->wt_rate = rate;
if (k != NULL)
tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP;
ieee80211_radiotap_tx(vap, m);
}
flags = 0;
if (!ismcast) {
/* Unicast frame, check if an ACK is expected. */
if (!qos || (qos & IEEE80211_QOS_ACKPOLICY) !=
IEEE80211_QOS_ACKPOLICY_NOACK)
flags |= WPI_TX_NEED_ACK;
}
if (wh->i_fc[1] & IEEE80211_FC1_MORE_FRAG)
flags |= WPI_TX_MORE_FRAG; /* Cannot happen yet. */
/* Check if frame must be protected using RTS/CTS or CTS-to-self. */
if (!ismcast) {
/* NB: Group frames are sent using CCK in 802.11b/g. */
if (totlen + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) {
flags |= WPI_TX_NEED_RTS;
} else if ((ic->ic_flags & IEEE80211_F_USEPROT) &&
WPI_RATE_IS_OFDM(rate)) {
if (ic->ic_protmode == IEEE80211_PROT_CTSONLY)
flags |= WPI_TX_NEED_CTS;
else if (ic->ic_protmode == IEEE80211_PROT_RTSCTS)
flags |= WPI_TX_NEED_RTS;
}
if (flags & (WPI_TX_NEED_RTS | WPI_TX_NEED_CTS))
flags |= WPI_TX_FULL_TXOP;
}
memset(tx, 0, sizeof (struct wpi_cmd_data));
if (type == IEEE80211_FC0_TYPE_MGT) {
uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
/* Tell HW to set timestamp in probe responses. */
if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP)
flags |= WPI_TX_INSERT_TSTAMP;
if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ ||
subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ)
tx->timeout = htole16(3);
else
tx->timeout = htole16(2);
}
if (ismcast || type != IEEE80211_FC0_TYPE_DATA)
tx->id = WPI_ID_BROADCAST;
else {
if (wn->id == WPI_ID_UNDEFINED) {
device_printf(sc->sc_dev,
"%s: undefined node id\n", __func__);
error = EINVAL;
goto fail;
}
tx->id = wn->id;
}
if (k != NULL && !swcrypt) {
switch (k->wk_cipher->ic_cipher) {
case IEEE80211_CIPHER_AES_CCM:
tx->security = WPI_CIPHER_CCMP;
break;
default:
break;
}
memcpy(tx->key, k->wk_key, k->wk_keylen);
}
tx->len = htole16(totlen);
tx->flags = htole32(flags);
tx->plcp = rate2plcp(rate);
tx->tid = tid;
tx->lifetime = htole32(WPI_LIFETIME_INFINITE);
tx->ofdm_mask = 0xff;
tx->cck_mask = 0x0f;
tx->rts_ntries = 7;
tx->data_ntries = tp->maxretry;
tx_data.ni = ni;
tx_data.m = m;
tx_data.size = sizeof(struct wpi_cmd_data);
tx_data.code = WPI_CMD_TX_DATA;
tx_data.ac = ac;
return wpi_cmd2(sc, &tx_data);
fail: m_freem(m);
return error;
}
static int
wpi_tx_data_raw(struct wpi_softc *sc, struct mbuf *m,
struct ieee80211_node *ni, const struct ieee80211_bpf_params *params)
{
struct ieee80211vap *vap = ni->ni_vap;
struct ieee80211_key *k = NULL;
struct ieee80211_frame *wh;
struct wpi_buf tx_data;
struct wpi_cmd_data *tx = (struct wpi_cmd_data *)&tx_data.data;
uint32_t flags;
uint8_t type;
int ac, rate, swcrypt, totlen;
wh = mtod(m, struct ieee80211_frame *);
type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
ac = params->ibp_pri & 3;
/* Choose a TX rate index. */
rate = params->ibp_rate0;
flags = 0;
if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0)
flags |= WPI_TX_NEED_ACK;
if (params->ibp_flags & IEEE80211_BPF_RTS)
flags |= WPI_TX_NEED_RTS;
if (params->ibp_flags & IEEE80211_BPF_CTS)
flags |= WPI_TX_NEED_CTS;
if (flags & (WPI_TX_NEED_RTS | WPI_TX_NEED_CTS))
flags |= WPI_TX_FULL_TXOP;
/* Encrypt the frame if need be. */
if (params->ibp_flags & IEEE80211_BPF_CRYPTO) {
/* Retrieve key for TX. */
k = ieee80211_crypto_encap(ni, m);
if (k == NULL) {
m_freem(m);
return ENOBUFS;
}
swcrypt = k->wk_flags & IEEE80211_KEY_SWCRYPT;
/* 802.11 header may have moved. */
wh = mtod(m, struct ieee80211_frame *);
}
totlen = m->m_pkthdr.len;
if (ieee80211_radiotap_active_vap(vap)) {
struct wpi_tx_radiotap_header *tap = &sc->sc_txtap;
tap->wt_flags = 0;
tap->wt_rate = rate;
if (params->ibp_flags & IEEE80211_BPF_CRYPTO)
tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP;
ieee80211_radiotap_tx(vap, m);
}
memset(tx, 0, sizeof (struct wpi_cmd_data));
if (type == IEEE80211_FC0_TYPE_MGT) {
uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
/* Tell HW to set timestamp in probe responses. */
if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP)
flags |= WPI_TX_INSERT_TSTAMP;
if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ ||
subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ)
tx->timeout = htole16(3);
else
tx->timeout = htole16(2);
}
if (k != NULL && !swcrypt) {
switch (k->wk_cipher->ic_cipher) {
case IEEE80211_CIPHER_AES_CCM:
tx->security = WPI_CIPHER_CCMP;
break;
default:
break;
}
memcpy(tx->key, k->wk_key, k->wk_keylen);
}
tx->len = htole16(totlen);
tx->flags = htole32(flags);
tx->plcp = rate2plcp(rate);
tx->id = WPI_ID_BROADCAST;
tx->lifetime = htole32(WPI_LIFETIME_INFINITE);
tx->rts_ntries = params->ibp_try1;
tx->data_ntries = params->ibp_try0;
tx_data.ni = ni;
tx_data.m = m;
tx_data.size = sizeof(struct wpi_cmd_data);
tx_data.code = WPI_CMD_TX_DATA;
tx_data.ac = ac;
return wpi_cmd2(sc, &tx_data);
}
static int
wpi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
const struct ieee80211_bpf_params *params)
{
struct ieee80211com *ic = ni->ni_ic;
struct ifnet *ifp = ic->ic_ifp;
struct wpi_softc *sc = ifp->if_softc;
int error = 0;
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__);
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
ieee80211_free_node(ni);
m_freem(m);
return ENETDOWN;
}
WPI_TX_LOCK(sc);
if (params == NULL) {
/*
* Legacy path; interpret frame contents to decide
* precisely how to send the frame.
*/
error = wpi_tx_data(sc, m, ni);
} else {
/*
* Caller supplied explicit parameters to use in
* sending the frame.
*/
error = wpi_tx_data_raw(sc, m, ni, params);
}
WPI_TX_UNLOCK(sc);
if (error != 0) {
/* NB: m is reclaimed on tx failure */
ieee80211_free_node(ni);
if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__);
return error;
}
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__);
return 0;
}
/**
* Process data waiting to be sent on the IFNET output queue
*/
static void
wpi_start(struct ifnet *ifp)
{
struct wpi_softc *sc = ifp->if_softc;
struct ieee80211_node *ni;
struct mbuf *m;
WPI_TX_LOCK(sc);
DPRINTF(sc, WPI_DEBUG_XMIT, "%s: called\n", __func__);
for (;;) {
IF_LOCK(&ifp->if_snd);
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 ||
(ifp->if_drv_flags & IFF_DRV_OACTIVE)) {
IF_UNLOCK(&ifp->if_snd);
break;
}
IF_UNLOCK(&ifp->if_snd);
IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
if (m == NULL)
break;
ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
if (wpi_tx_data(sc, m, ni) != 0) {
ieee80211_free_node(ni);
if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
}
}
DPRINTF(sc, WPI_DEBUG_XMIT, "%s: done\n", __func__);
WPI_TX_UNLOCK(sc);
}
static void
wpi_start_task(void *arg0, int pending)
{
struct wpi_softc *sc = arg0;
struct ifnet *ifp = sc->sc_ifp;
wpi_start(ifp);
}
static void
wpi_watchdog_rfkill(void *arg)
{
struct wpi_softc *sc = arg;
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
DPRINTF(sc, WPI_DEBUG_WATCHDOG, "RFkill Watchdog: tick\n");
/* No need to lock firmware memory. */
if ((wpi_prph_read(sc, WPI_APMG_RFKILL) & 0x1) == 0) {
/* Radio kill switch is still off. */
callout_reset(&sc->watchdog_rfkill, hz, wpi_watchdog_rfkill,
sc);
} else
ieee80211_runtask(ic, &sc->sc_radioon_task);
}
static void
wpi_scan_timeout(void *arg)
{
struct wpi_softc *sc = arg;
struct ifnet *ifp = sc->sc_ifp;
if_printf(ifp, "scan timeout\n");
taskqueue_enqueue(sc->sc_tq, &sc->sc_reinittask);
}
static void
wpi_tx_timeout(void *arg)
{
struct wpi_softc *sc = arg;
struct ifnet *ifp = sc->sc_ifp;
if_printf(ifp, "device timeout\n");
if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
taskqueue_enqueue(sc->sc_tq, &sc->sc_reinittask);
}
static int
wpi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
{
struct wpi_softc *sc = ifp->if_softc;
struct ieee80211com *ic = ifp->if_l2com;
struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
struct ifreq *ifr = (struct ifreq *) data;
int error = 0;
switch (cmd) {
case SIOCGIFADDR:
error = ether_ioctl(ifp, cmd, data);
break;
case SIOCSIFFLAGS:
if (ifp->if_flags & IFF_UP) {
wpi_init(sc);
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 &&
vap != NULL)
ieee80211_stop(vap);
} else if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
wpi_stop(sc);
break;
case SIOCGIFMEDIA:
error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
break;
default:
error = EINVAL;
break;
}
return error;
}
/*
* Send a command to the firmware.
*/
static int
wpi_cmd(struct wpi_softc *sc, int code, const void *buf, size_t size,
int async)
{
struct wpi_tx_ring *ring = &sc->txq[WPI_CMD_QUEUE_NUM];
struct wpi_tx_desc *desc;
struct wpi_tx_data *data;
struct wpi_tx_cmd *cmd;
struct mbuf *m;
bus_addr_t paddr;
int totlen, error;
WPI_TXQ_LOCK(sc);
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__);
if (sc->txq_active == 0) {
/* wpi_stop() was called */
error = 0;
goto fail;
}
if (async == 0)
WPI_LOCK_ASSERT(sc);
DPRINTF(sc, WPI_DEBUG_CMD, "%s: cmd %s size %zu async %d\n",
__func__, wpi_cmd_str(code), size, async);
desc = &ring->desc[ring->cur];
data = &ring->data[ring->cur];
totlen = 4 + size;
if (size > sizeof cmd->data) {
/* Command is too large to fit in a descriptor. */
if (totlen > MCLBYTES) {
error = EINVAL;
goto fail;
}
m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE);
if (m == NULL) {
error = ENOMEM;
goto fail;
}
cmd = mtod(m, struct wpi_tx_cmd *);
error = bus_dmamap_load(ring->data_dmat, data->map, cmd,
totlen, wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT);
if (error != 0) {
m_freem(m);
goto fail;
}
data->m = m;
} else {
cmd = &ring->cmd[ring->cur];
paddr = data->cmd_paddr;
}
cmd->code = code;
cmd->flags = 0;
cmd->qid = ring->qid;
cmd->idx = ring->cur;
memcpy(cmd->data, buf, size);
desc->nsegs = 1 + (WPI_PAD32(size) << 4);
desc->segs[0].addr = htole32(paddr);
desc->segs[0].len = htole32(totlen);
if (size > sizeof cmd->data) {
bus_dmamap_sync(ring->data_dmat, data->map,
BUS_DMASYNC_PREWRITE);
} else {
bus_dmamap_sync(ring->data_dmat, ring->cmd_dma.map,
BUS_DMASYNC_PREWRITE);
}
bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
BUS_DMASYNC_PREWRITE);
/* Kick command ring. */
ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT;
wpi_update_tx_ring(sc, ring);
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__);
WPI_TXQ_UNLOCK(sc);
if (async)
return 0;
return mtx_sleep(cmd, &sc->sc_mtx, PCATCH, "wpicmd", hz);
fail: DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__);
WPI_TXQ_UNLOCK(sc);
return error;
}
/*
* Configure HW multi-rate retries.
*/
static int
wpi_mrr_setup(struct wpi_softc *sc)
{
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
struct wpi_mrr_setup mrr;
int i, error;
/* CCK rates (not used with 802.11a). */
for (i = WPI_RIDX_CCK1; i <= WPI_RIDX_CCK11; i++) {
mrr.rates[i].flags = 0;
mrr.rates[i].plcp = wpi_ridx_to_plcp[i];
/* Fallback to the immediate lower CCK rate (if any.) */
mrr.rates[i].next =
(i == WPI_RIDX_CCK1) ? WPI_RIDX_CCK1 : i - 1;
/* Try twice at this rate before falling back to "next". */
mrr.rates[i].ntries = WPI_NTRIES_DEFAULT;
}
/* OFDM rates (not used with 802.11b). */
for (i = WPI_RIDX_OFDM6; i <= WPI_RIDX_OFDM54; i++) {
mrr.rates[i].flags = 0;
mrr.rates[i].plcp = wpi_ridx_to_plcp[i];
/* Fallback to the immediate lower rate (if any.) */
/* We allow fallback from OFDM/6 to CCK/2 in 11b/g mode. */
mrr.rates[i].next = (i == WPI_RIDX_OFDM6) ?
((ic->ic_curmode == IEEE80211_MODE_11A) ?
WPI_RIDX_OFDM6 : WPI_RIDX_CCK2) :
i - 1;
/* Try twice at this rate before falling back to "next". */
mrr.rates[i].ntries = WPI_NTRIES_DEFAULT;
}
/* Setup MRR for control frames. */
mrr.which = htole32(WPI_MRR_CTL);
error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0);
if (error != 0) {
device_printf(sc->sc_dev,
"could not setup MRR for control frames\n");
return error;
}
/* Setup MRR for data frames. */
mrr.which = htole32(WPI_MRR_DATA);
error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0);
if (error != 0) {
device_printf(sc->sc_dev,
"could not setup MRR for data frames\n");
return error;
}
return 0;
}
static int
wpi_add_node(struct wpi_softc *sc, struct ieee80211_node *ni)
{
struct ieee80211com *ic = ni->ni_ic;
struct wpi_vap *wvp = WPI_VAP(ni->ni_vap);
struct wpi_node *wn = WPI_NODE(ni);
struct wpi_node_info node;
int error;
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);
if (wn->id == WPI_ID_UNDEFINED)
return EINVAL;
memset(&node, 0, sizeof node);
IEEE80211_ADDR_COPY(node.macaddr, ni->ni_macaddr);
node.id = wn->id;
node.plcp = (ic->ic_curmode == IEEE80211_MODE_11A) ?
wpi_ridx_to_plcp[WPI_RIDX_OFDM6] : wpi_ridx_to_plcp[WPI_RIDX_CCK1];
node.action = htole32(WPI_ACTION_SET_RATE);
node.antenna = WPI_ANTENNA_BOTH;
DPRINTF(sc, WPI_DEBUG_NODE, "%s: adding node %d (%s)\n", __func__,
wn->id, ether_sprintf(ni->ni_macaddr));
error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1);
if (error != 0) {
device_printf(sc->sc_dev,
"%s: wpi_cmd() call failed with error code %d\n", __func__,
error);
return error;
}
if (wvp->wv_gtk != 0) {
error = wpi_set_global_keys(ni);
if (error != 0) {
device_printf(sc->sc_dev,
"%s: error while setting global keys\n", __func__);
return ENXIO;
}
}
return 0;
}
/*
* Broadcast node is used to send group-addressed and management frames.
*/
static int
wpi_add_broadcast_node(struct wpi_softc *sc, int async)
{
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
struct wpi_node_info node;
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);
memset(&node, 0, sizeof node);
IEEE80211_ADDR_COPY(node.macaddr, ifp->if_broadcastaddr);
node.id = WPI_ID_BROADCAST;
node.plcp = (ic->ic_curmode == IEEE80211_MODE_11A) ?
wpi_ridx_to_plcp[WPI_RIDX_OFDM6] : wpi_ridx_to_plcp[WPI_RIDX_CCK1];
node.action = htole32(WPI_ACTION_SET_RATE);
node.antenna = WPI_ANTENNA_BOTH;
DPRINTF(sc, WPI_DEBUG_NODE, "%s: adding broadcast node\n", __func__);
return wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, async);
}
static int
wpi_add_sta_node(struct wpi_softc *sc, struct ieee80211_node *ni)
{
struct wpi_node *wn = WPI_NODE(ni);
int error;
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);
wn->id = wpi_add_node_entry_sta(sc);
if ((error = wpi_add_node(sc, ni)) != 0) {
wpi_del_node_entry(sc, wn->id);
wn->id = WPI_ID_UNDEFINED;
return error;
}
return 0;
}
static int
wpi_add_ibss_node(struct wpi_softc *sc, struct ieee80211_node *ni)
{
struct wpi_node *wn = WPI_NODE(ni);
int error;
KASSERT(wn->id == WPI_ID_UNDEFINED,
("the node %d was added before", wn->id));
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);
if ((wn->id = wpi_add_node_entry_adhoc(sc)) == WPI_ID_UNDEFINED) {
device_printf(sc->sc_dev, "%s: h/w table is full\n", __func__);
return ENOMEM;
}
if ((error = wpi_add_node(sc, ni)) != 0) {
wpi_del_node_entry(sc, wn->id);
wn->id = WPI_ID_UNDEFINED;
return error;
}
return 0;
}
static void
wpi_del_node(struct wpi_softc *sc, struct ieee80211_node *ni)
{
struct wpi_node *wn = WPI_NODE(ni);
struct wpi_cmd_del_node node;
int error;
KASSERT(wn->id != WPI_ID_UNDEFINED, ("undefined node id passed"));
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);
memset(&node, 0, sizeof node);
IEEE80211_ADDR_COPY(node.macaddr, ni->ni_macaddr);
node.count = 1;
DPRINTF(sc, WPI_DEBUG_NODE, "%s: deleting node %d (%s)\n", __func__,
wn->id, ether_sprintf(ni->ni_macaddr));
error = wpi_cmd(sc, WPI_CMD_DEL_NODE, &node, sizeof node, 1);
if (error != 0) {
device_printf(sc->sc_dev,
"%s: could not delete node %u, error %d\n", __func__,
wn->id, error);
}
}
static int
wpi_updateedca(struct ieee80211com *ic)
{
#define WPI_EXP2(x) ((1 << (x)) - 1) /* CWmin = 2^ECWmin - 1 */
struct wpi_softc *sc = ic->ic_ifp->if_softc;
struct wpi_edca_params cmd;
int aci, error;
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__);
memset(&cmd, 0, sizeof cmd);
cmd.flags = htole32(WPI_EDCA_UPDATE);
for (aci = 0; aci < WME_NUM_AC; aci++) {
const struct wmeParams *ac =
&ic->ic_wme.wme_chanParams.cap_wmeParams[aci];
cmd.ac[aci].aifsn = ac->wmep_aifsn;
cmd.ac[aci].cwmin = htole16(WPI_EXP2(ac->wmep_logcwmin));
cmd.ac[aci].cwmax = htole16(WPI_EXP2(ac->wmep_logcwmax));
cmd.ac[aci].txoplimit =
htole16(IEEE80211_TXOP_TO_US(ac->wmep_txopLimit));
DPRINTF(sc, WPI_DEBUG_EDCA,
"setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d "
"txoplimit=%d\n", aci, cmd.ac[aci].aifsn,
cmd.ac[aci].cwmin, cmd.ac[aci].cwmax,
cmd.ac[aci].txoplimit);
}
error = wpi_cmd(sc, WPI_CMD_EDCA_PARAMS, &cmd, sizeof cmd, 1);
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__);
return error;
#undef WPI_EXP2
}
static void
wpi_set_promisc(struct wpi_softc *sc)
{
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
uint32_t promisc_filter;
promisc_filter = WPI_FILTER_CTL;
if (vap != NULL && vap->iv_opmode != IEEE80211_M_HOSTAP)
promisc_filter |= WPI_FILTER_PROMISC;
if (ifp->if_flags & IFF_PROMISC)
sc->rxon.filter |= htole32(promisc_filter);
else
sc->rxon.filter &= ~htole32(promisc_filter);
}
static void
wpi_update_promisc(struct ifnet *ifp)
{
struct wpi_softc *sc = ifp->if_softc;
WPI_RXON_LOCK(sc);
wpi_set_promisc(sc);
if (wpi_send_rxon(sc, 1, 1) != 0) {
device_printf(sc->sc_dev, "%s: could not send RXON\n",
__func__);
}
WPI_RXON_UNLOCK(sc);
}
static void
wpi_update_mcast(struct ifnet *ifp)
{
/* Ignore */
}
static void
wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on)
{
struct wpi_cmd_led led;
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);
led.which = which;
led.unit = htole32(100000); /* on/off in unit of 100ms */
led.off = off;
led.on = on;
(void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1);
}
static int
wpi_set_timing(struct wpi_softc *sc, struct ieee80211_node *ni)
{
struct wpi_cmd_timing cmd;
uint64_t val, mod;
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);
memset(&cmd, 0, sizeof cmd);
memcpy(&cmd.tstamp, ni->ni_tstamp.data, sizeof (uint64_t));
cmd.bintval = htole16(ni->ni_intval);
cmd.lintval = htole16(10);
/* Compute remaining time until next beacon. */
val = (uint64_t)ni->ni_intval * IEEE80211_DUR_TU;
mod = le64toh(cmd.tstamp) % val;
cmd.binitval = htole32((uint32_t)(val - mod));
DPRINTF(sc, WPI_DEBUG_RESET, "timing bintval=%u tstamp=%ju, init=%u\n",
ni->ni_intval, le64toh(cmd.tstamp), (uint32_t)(val - mod));
return wpi_cmd(sc, WPI_CMD_TIMING, &cmd, sizeof cmd, 1);
}
/*
* This function is called periodically (every 60 seconds) to adjust output
* power to temperature changes.
*/
static void
wpi_power_calibration(struct wpi_softc *sc)
{
int temp;
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);
/* Update sensor data. */
temp = (int)WPI_READ(sc, WPI_UCODE_GP2);
DPRINTF(sc, WPI_DEBUG_TEMP, "Temp in calibration is: %d\n", temp);
/* Sanity-check read value. */
if (temp < -260 || temp > 25) {
/* This can't be correct, ignore. */
DPRINTF(sc, WPI_DEBUG_TEMP,
"out-of-range temperature reported: %d\n", temp);
return;
}
DPRINTF(sc, WPI_DEBUG_TEMP, "temperature %d->%d\n", sc->temp, temp);
/* Adjust Tx power if need be. */
if (abs(temp - sc->temp) <= 6)
return;
sc->temp = temp;
if (wpi_set_txpower(sc, 1) != 0) {
/* just warn, too bad for the automatic calibration... */
device_printf(sc->sc_dev,"could not adjust Tx power\n");
}
}
/*
* Set TX power for current channel.
*/
static int
wpi_set_txpower(struct wpi_softc *sc, int async)
{
struct wpi_power_group *group;
struct wpi_cmd_txpower cmd;
uint8_t chan;
int idx, is_chan_5ghz, i;
/* Retrieve current channel from last RXON. */
chan = sc->rxon.chan;
is_chan_5ghz = (sc->rxon.flags & htole32(WPI_RXON_24GHZ)) == 0;
/* Find the TX power group to which this channel belongs. */
if (is_chan_5ghz) {
for (group = &sc->groups[1]; group < &sc->groups[4]; group++)
if (chan <= group->chan)
break;
} else
group = &sc->groups[0];
memset(&cmd, 0, sizeof cmd);
cmd.band = is_chan_5ghz ? WPI_BAND_5GHZ : WPI_BAND_2GHZ;
cmd.chan = htole16(chan);
/* Set TX power for all OFDM and CCK rates. */
for (i = 0; i <= WPI_RIDX_MAX ; i++) {
/* Retrieve TX power for this channel/rate. */
idx = wpi_get_power_index(sc, group, chan, is_chan_5ghz, i);
cmd.rates[i].plcp = wpi_ridx_to_plcp[i];
if (is_chan_5ghz) {
cmd.rates[i].rf_gain = wpi_rf_gain_5ghz[idx];
cmd.rates[i].dsp_gain = wpi_dsp_gain_5ghz[idx];
} else {
cmd.rates[i].rf_gain = wpi_rf_gain_2ghz[idx];
cmd.rates[i].dsp_gain = wpi_dsp_gain_2ghz[idx];
}
DPRINTF(sc, WPI_DEBUG_TEMP,
"chan %d/ridx %d: power index %d\n", chan, i, idx);
}
return wpi_cmd(sc, WPI_CMD_TXPOWER, &cmd, sizeof cmd, async);
}
/*
* 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,
uint8_t chan, int is_chan_5ghz, int ridx)
{
/* Fixed-point arithmetic division using a n-bit fractional part. */
#define fdivround(a, b, n) \
((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n))
/* Linear interpolation. */
#define interpolate(x, x1, y1, x2, y2, n) \
((y1) + fdivround(((x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n))
struct wpi_power_sample *sample;
int pwr, idx;
/* Default TX power is group maximum TX power minus 3dB. */
pwr = group->maxpwr / 2;
/* Decrease TX power for highest OFDM rates to reduce distortion. */
switch (ridx) {
case WPI_RIDX_OFDM36:
pwr -= is_chan_5ghz ? 5 : 0;
break;
case WPI_RIDX_OFDM48:
pwr -= is_chan_5ghz ? 10 : 7;
break;
case WPI_RIDX_OFDM54:
pwr -= is_chan_5ghz ? 12 : 9;
break;
}
/* Never exceed the channel maximum allowed TX power. */
pwr = min(pwr, sc->maxpwr[chan]);
/* Retrieve TX power index into gain tables from samples. */
for (sample = group->samples; sample < &group->samples[3]; sample++)
if (pwr > sample[1].power)
break;
/* Fixed-point linear interpolation using a 19-bit fractional part. */
idx = interpolate(pwr, sample[0].power, sample[0].index,
sample[1].power, sample[1].index, 19);
/*-
* Adjust power index based on current temperature:
* - if cooler than factory-calibrated: decrease output power
* - if warmer than factory-calibrated: increase output power
*/
idx -= (sc->temp - group->temp) * 11 / 100;
/* Decrease TX power for CCK rates (-5dB). */
if (ridx >= WPI_RIDX_CCK1)
idx += 10;
/* Make sure idx stays in a valid range. */
if (idx < 0)
return 0;
if (idx > WPI_MAX_PWR_INDEX)
return WPI_MAX_PWR_INDEX;
return idx;
#undef interpolate
#undef fdivround
}
/*
* Set STA mode power saving level (between 0 and 5).
* Level 0 is CAM (Continuously Aware Mode), 5 is for maximum power saving.
*/
static int
wpi_set_pslevel(struct wpi_softc *sc, uint8_t dtim, int level, int async)
{
struct wpi_pmgt_cmd cmd;
const struct wpi_pmgt *pmgt;
uint32_t max, skip_dtim;
uint32_t reg;
int i;
DPRINTF(sc, WPI_DEBUG_PWRSAVE,
"%s: dtim=%d, level=%d, async=%d\n",
__func__, dtim, level, async);
/* Select which PS parameters to use. */
if (dtim <= 10)
pmgt = &wpi_pmgt[0][level];
else
pmgt = &wpi_pmgt[1][level];
memset(&cmd, 0, sizeof cmd);
if (level != 0) /* not CAM */
cmd.flags |= htole16(WPI_PS_ALLOW_SLEEP);
/* Retrieve PCIe Active State Power Management (ASPM). */
reg = pci_read_config(sc->sc_dev, sc->sc_cap_off + 0x10, 1);
if (!(reg & 0x1)) /* L0s Entry disabled. */
cmd.flags |= htole16(WPI_PS_PCI_PMGT);
cmd.rxtimeout = htole32(pmgt->rxtimeout * IEEE80211_DUR_TU);
cmd.txtimeout = htole32(pmgt->txtimeout * IEEE80211_DUR_TU);
if (dtim == 0) {
dtim = 1;
skip_dtim = 0;
} else
skip_dtim = pmgt->skip_dtim;
if (skip_dtim != 0) {
cmd.flags |= htole16(WPI_PS_SLEEP_OVER_DTIM);
max = pmgt->intval[4];
if (max == (uint32_t)-1)
max = dtim * (skip_dtim + 1);
else if (max > dtim)
max = (max / dtim) * dtim;
} else
max = dtim;
for (i = 0; i < 5; i++)
cmd.intval[i] = htole32(MIN(max, pmgt->intval[i]));
return wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &cmd, sizeof cmd, async);
}
static int
wpi_send_btcoex(struct wpi_softc *sc)
{
struct wpi_bluetooth cmd;
memset(&cmd, 0, sizeof cmd);
cmd.flags = WPI_BT_COEX_MODE_4WIRE;
cmd.lead_time = WPI_BT_LEAD_TIME_DEF;
cmd.max_kill = WPI_BT_MAX_KILL_DEF;
DPRINTF(sc, WPI_DEBUG_RESET, "%s: configuring bluetooth coexistence\n",
__func__);
return wpi_cmd(sc, WPI_CMD_BT_COEX, &cmd, sizeof(cmd), 0);
}
static int
wpi_send_rxon(struct wpi_softc *sc, int assoc, int async)
{
int error;
if (async)
WPI_RXON_LOCK_ASSERT(sc);
if (assoc && wpi_check_bss_filter(sc) != 0) {
struct wpi_assoc rxon_assoc;
rxon_assoc.flags = sc->rxon.flags;
rxon_assoc.filter = sc->rxon.filter;
rxon_assoc.ofdm_mask = sc->rxon.ofdm_mask;
rxon_assoc.cck_mask = sc->rxon.cck_mask;
rxon_assoc.reserved = 0;
error = wpi_cmd(sc, WPI_CMD_RXON_ASSOC, &rxon_assoc,
sizeof (struct wpi_assoc), async);
if (error != 0) {
device_printf(sc->sc_dev,
"RXON_ASSOC command failed, error %d\n", error);
return error;
}
} else {
if (async) {
WPI_NT_LOCK(sc);
error = wpi_cmd(sc, WPI_CMD_RXON, &sc->rxon,
sizeof (struct wpi_rxon), async);
if (error == 0)
wpi_clear_node_table(sc);
WPI_NT_UNLOCK(sc);
} else {
error = wpi_cmd(sc, WPI_CMD_RXON, &sc->rxon,
sizeof (struct wpi_rxon), async);
if (error == 0)
wpi_clear_node_table(sc);
}
if (error != 0) {
device_printf(sc->sc_dev,
"RXON command failed, error %d\n", error);
return error;
}
/* Add broadcast node. */
error = wpi_add_broadcast_node(sc, async);
if (error != 0) {
device_printf(sc->sc_dev,
"could not add broadcast node, error %d\n", error);
return error;
}
}
/* Configuration has changed, set Tx power accordingly. */
if ((error = wpi_set_txpower(sc, async)) != 0) {
device_printf(sc->sc_dev,
"%s: could not set TX power, error %d\n", __func__, error);
return error;
}
return 0;
}
/**
* Configure the card to listen to a particular channel, this transisions the
* card in to being able to receive frames from remote devices.
*/
static int
wpi_config(struct wpi_softc *sc)
{
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
struct ieee80211_channel *c = ic->ic_curchan;
uint32_t flags;
int error;
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__);
/* Set power saving level to CAM during initialization. */
if ((error = wpi_set_pslevel(sc, 0, 0, 0)) != 0) {
device_printf(sc->sc_dev,
"%s: could not set power saving level\n", __func__);
return error;
}
/* Configure bluetooth coexistence. */
if ((error = wpi_send_btcoex(sc)) != 0) {
device_printf(sc->sc_dev,
"could not configure bluetooth coexistence\n");
return error;
}
/* Configure adapter. */
memset(&sc->rxon, 0, sizeof (struct wpi_rxon));
IEEE80211_ADDR_COPY(sc->rxon.myaddr, vap->iv_myaddr);
/* Set default channel. */
sc->rxon.chan = ieee80211_chan2ieee(ic, c);
sc->rxon.flags = htole32(WPI_RXON_TSF | WPI_RXON_CTS_TO_SELF);
if (IEEE80211_IS_CHAN_2GHZ(c))
sc->rxon.flags |= htole32(WPI_RXON_AUTO | WPI_RXON_24GHZ);
sc->rxon.filter = WPI_FILTER_MULTICAST;
switch (ic->ic_opmode) {
case IEEE80211_M_STA:
sc->rxon.mode = WPI_MODE_STA;
break;
case IEEE80211_M_IBSS:
sc->rxon.mode = WPI_MODE_IBSS;
sc->rxon.filter |= WPI_FILTER_BEACON;
break;
case IEEE80211_M_HOSTAP:
/* XXX workaround for beaconing */
sc->rxon.mode = WPI_MODE_IBSS;
sc->rxon.filter |= WPI_FILTER_ASSOC | WPI_FILTER_PROMISC;
break;
case IEEE80211_M_AHDEMO:
/* XXX workaround for passive channels selection */
sc->rxon.mode = WPI_MODE_HOSTAP;
break;
case IEEE80211_M_MONITOR:
sc->rxon.mode = WPI_MODE_MONITOR;
break;
default:
device_printf(sc->sc_dev, "unknown opmode %d\n",
ic->ic_opmode);
return EINVAL;
}
sc->rxon.filter = htole32(sc->rxon.filter);
wpi_set_promisc(sc);
sc->rxon.cck_mask = 0x0f; /* not yet negotiated */
sc->rxon.ofdm_mask = 0xff; /* not yet negotiated */
if ((error = wpi_send_rxon(sc, 0, 0)) != 0) {
device_printf(sc->sc_dev, "%s: could not send RXON\n",
__func__);
return error;
}
/* Setup rate scalling. */
if ((error = wpi_mrr_setup(sc)) != 0) {
device_printf(sc->sc_dev, "could not setup MRR, error %d\n",
error);
return error;
}
/* Disable beacon notifications (unused). */
flags = WPI_STATISTICS_BEACON_DISABLE;
error = wpi_cmd(sc, WPI_CMD_GET_STATISTICS, &flags, sizeof flags, 1);
if (error != 0) {
device_printf(sc->sc_dev,
"could not disable beacon statistics, error %d\n", error);
return error;
}
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__);
return 0;
}
static uint16_t
wpi_get_active_dwell_time(struct wpi_softc *sc,
struct ieee80211_channel *c, uint8_t n_probes)
{
/* No channel? Default to 2GHz settings. */
if (c == NULL || IEEE80211_IS_CHAN_2GHZ(c)) {
return (WPI_ACTIVE_DWELL_TIME_2GHZ +
WPI_ACTIVE_DWELL_FACTOR_2GHZ * (n_probes + 1));
}
/* 5GHz dwell time. */
return (WPI_ACTIVE_DWELL_TIME_5GHZ +
WPI_ACTIVE_DWELL_FACTOR_5GHZ * (n_probes + 1));
}
/*
* Limit the total dwell time to 85% of the beacon interval.
*
* Returns the dwell time in milliseconds.
*/
static uint16_t
wpi_limit_dwell(struct wpi_softc *sc, uint16_t dwell_time)
{
struct ieee80211com *ic = sc->sc_ifp->if_l2com;
struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
int bintval = 0;
/* bintval is in TU (1.024mS) */
if (vap != NULL)
bintval = vap->iv_bss->ni_intval;
/*
* If it's non-zero, we should calculate the minimum of
* it and the DWELL_BASE.
*
* XXX Yes, the math should take into account that bintval
* is 1.024mS, not 1mS..
*/
if (bintval > 0) {
DPRINTF(sc, WPI_DEBUG_SCAN, "%s: bintval=%d\n", __func__,
bintval);
return (MIN(WPI_PASSIVE_DWELL_BASE, ((bintval * 85) / 100)));
}
/* No association context? Default. */
return (WPI_PASSIVE_DWELL_BASE);
}
static uint16_t
wpi_get_passive_dwell_time(struct wpi_softc *sc, struct ieee80211_channel *c)
{
uint16_t passive;
if (c == NULL || IEEE80211_IS_CHAN_2GHZ(c))
passive = WPI_PASSIVE_DWELL_BASE + WPI_PASSIVE_DWELL_TIME_2GHZ;
else
passive = WPI_PASSIVE_DWELL_BASE + WPI_PASSIVE_DWELL_TIME_5GHZ;
/* Clamp to the beacon interval if we're associated. */
return (wpi_limit_dwell(sc, passive));
}
/*
* Send a scan request to the firmware.
*/
static int
wpi_scan(struct wpi_softc *sc, struct ieee80211_channel *c)
{
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
struct ieee80211_scan_state *ss = ic->ic_scan;
struct ieee80211vap *vap = ss->ss_vap;
struct wpi_scan_hdr *hdr;
struct wpi_cmd_data *tx;
struct wpi_scan_essid *essids;
struct wpi_scan_chan *chan;
struct ieee80211_frame *wh;
struct ieee80211_rateset *rs;
uint16_t dwell_active, dwell_passive;
uint8_t *buf, *frm;
int buflen, error, i, nssid;
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__);
/*
* We are absolutely not allowed to send a scan command when another
* scan command is pending.
*/
if (callout_pending(&sc->scan_timeout)) {
device_printf(sc->sc_dev, "%s: called whilst scanning!\n",
__func__);
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__);
return (EAGAIN);
}
buf = malloc(WPI_SCAN_MAXSZ, M_DEVBUF, M_NOWAIT | M_ZERO);
if (buf == NULL) {
device_printf(sc->sc_dev,
"%s: could not allocate buffer for scan command\n",
__func__);
error = ENOMEM;
goto fail;
}
hdr = (struct wpi_scan_hdr *)buf;
/*
* Move to the next channel if no packets are received within 10 msecs
* after sending the probe request.
*/
hdr->quiet_time = htole16(10); /* timeout in milliseconds */
hdr->quiet_threshold = htole16(1); /* min # of packets */
/*
* Max needs to be greater than active and passive and quiet!
* It's also in microseconds!
*/
hdr->max_svc = htole32(250 * IEEE80211_DUR_TU);
hdr->pause_svc = htole32((4 << 24) |
(100 * IEEE80211_DUR_TU)); /* Hardcode for now */
hdr->filter = htole32(WPI_FILTER_MULTICAST | WPI_FILTER_BEACON);
tx = (struct wpi_cmd_data *)(hdr + 1);
tx->flags = htole32(WPI_TX_AUTO_SEQ);
tx->id = WPI_ID_BROADCAST;
tx->lifetime = htole32(WPI_LIFETIME_INFINITE);
if (IEEE80211_IS_CHAN_5GHZ(c)) {
/* Send probe requests at 6Mbps. */
tx->plcp = wpi_ridx_to_plcp[WPI_RIDX_OFDM6];
rs = &ic->ic_sup_rates[IEEE80211_MODE_11A];
} else {
hdr->flags = htole32(WPI_RXON_24GHZ | WPI_RXON_AUTO);
/* Send probe requests at 1Mbps. */
tx->plcp = wpi_ridx_to_plcp[WPI_RIDX_CCK1];
rs = &ic->ic_sup_rates[IEEE80211_MODE_11G];
}
essids = (struct wpi_scan_essid *)(tx + 1);
nssid = MIN(ss->ss_nssid, WPI_SCAN_MAX_ESSIDS);
for (i = 0; i < nssid; i++) {
essids[i].id = IEEE80211_ELEMID_SSID;
essids[i].len = MIN(ss->ss_ssid[i].len, IEEE80211_NWID_LEN);
memcpy(essids[i].data, ss->ss_ssid[i].ssid, essids[i].len);
#ifdef WPI_DEBUG
if (sc->sc_debug & WPI_DEBUG_SCAN) {
printf("Scanning Essid: ");
ieee80211_print_essid(essids[i].data, essids[i].len);
printf("\n");
}
#endif
}
/*
* Build a probe request frame. Most of the following code is a
* copy & paste of what is done in net80211.
*/
wh = (struct ieee80211_frame *)(essids + WPI_SCAN_MAX_ESSIDS);
wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT |
IEEE80211_FC0_SUBTYPE_PROBE_REQ;
wh->i_fc[1] = IEEE80211_FC1_DIR_NODS;
IEEE80211_ADDR_COPY(wh->i_addr1, ifp->if_broadcastaddr);
IEEE80211_ADDR_COPY(wh->i_addr2, vap->iv_myaddr);
IEEE80211_ADDR_COPY(wh->i_addr3, ifp->if_broadcastaddr);
*(uint16_t *)&wh->i_dur[0] = 0; /* filled by h/w */
*(uint16_t *)&wh->i_seq[0] = 0; /* filled by h/w */
frm = (uint8_t *)(wh + 1);
frm = ieee80211_add_ssid(frm, NULL, 0);
frm = ieee80211_add_rates(frm, rs);
if (rs->rs_nrates > IEEE80211_RATE_SIZE)
frm = ieee80211_add_xrates(frm, rs);
/* Set length of probe request. */
tx->len = htole16(frm - (uint8_t *)wh);
/*
* Construct information about the channel that we
* want to scan. The firmware expects this to be directly
* after the scan probe request
*/
chan = (struct wpi_scan_chan *)frm;
chan->chan = htole16(ieee80211_chan2ieee(ic, c));
chan->flags = 0;
if (nssid) {
hdr->crc_threshold = WPI_SCAN_CRC_TH_DEFAULT;
chan->flags |= WPI_CHAN_NPBREQS(nssid);
} else
hdr->crc_threshold = WPI_SCAN_CRC_TH_NEVER;
if (!IEEE80211_IS_CHAN_PASSIVE(c))
chan->flags |= WPI_CHAN_ACTIVE;
/*
* Calculate the active/passive dwell times.
*/
dwell_active = wpi_get_active_dwell_time(sc, c, nssid);
dwell_passive = wpi_get_passive_dwell_time(sc, c);
/* Make sure they're valid. */
if (dwell_passive <= dwell_active)
dwell_passive = dwell_active + 1;
chan->active = htole16(dwell_active);
chan->passive = htole16(dwell_passive);
chan->dsp_gain = 0x6e; /* Default level */
if (IEEE80211_IS_CHAN_5GHZ(c))
chan->rf_gain = 0x3b;
else
chan->rf_gain = 0x28;
DPRINTF(sc, WPI_DEBUG_SCAN, "Scanning %u Passive: %d\n",
chan->chan, IEEE80211_IS_CHAN_PASSIVE(c));
hdr->nchan++;
if (hdr->nchan == 1 && sc->rxon.chan == chan->chan) {
/* XXX Force probe request transmission. */
memcpy(chan + 1, chan, sizeof (struct wpi_scan_chan));
chan++;
/* Reduce unnecessary delay. */
chan->flags = 0;
chan->passive = chan->active = hdr->quiet_time;
hdr->nchan++;
}
chan++;
buflen = (uint8_t *)chan - buf;
hdr->len = htole16(buflen);
DPRINTF(sc, WPI_DEBUG_CMD, "sending scan command nchan=%d\n",
hdr->nchan);
error = wpi_cmd(sc, WPI_CMD_SCAN, buf, buflen, 1);
free(buf, M_DEVBUF);
if (error != 0)
goto fail;
callout_reset(&sc->scan_timeout, 5*hz, wpi_scan_timeout, sc);
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__);
return 0;
fail: DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__);
return error;
}
static int
wpi_auth(struct wpi_softc *sc, struct ieee80211vap *vap)
{
struct ieee80211com *ic = vap->iv_ic;
struct ieee80211_node *ni = vap->iv_bss;
struct ieee80211_channel *c = ni->ni_chan;
int error;
WPI_RXON_LOCK(sc);
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__);
/* Update adapter configuration. */
sc->rxon.associd = 0;
sc->rxon.filter &= ~htole32(WPI_FILTER_BSS);
IEEE80211_ADDR_COPY(sc->rxon.bssid, ni->ni_bssid);
sc->rxon.chan = ieee80211_chan2ieee(ic, c);
sc->rxon.flags = htole32(WPI_RXON_TSF | WPI_RXON_CTS_TO_SELF);
if (IEEE80211_IS_CHAN_2GHZ(c))
sc->rxon.flags |= htole32(WPI_RXON_AUTO | WPI_RXON_24GHZ);
if (ic->ic_flags & IEEE80211_F_SHSLOT)
sc->rxon.flags |= htole32(WPI_RXON_SHSLOT);
if (ic->ic_flags & IEEE80211_F_SHPREAMBLE)
sc->rxon.flags |= htole32(WPI_RXON_SHPREAMBLE);
if (IEEE80211_IS_CHAN_A(c)) {
sc->rxon.cck_mask = 0;
sc->rxon.ofdm_mask = 0x15;
} else if (IEEE80211_IS_CHAN_B(c)) {
sc->rxon.cck_mask = 0x03;
sc->rxon.ofdm_mask = 0;
} else {
/* Assume 802.11b/g. */
sc->rxon.cck_mask = 0x0f;
sc->rxon.ofdm_mask = 0x15;
}
DPRINTF(sc, WPI_DEBUG_STATE, "rxon chan %d flags %x cck %x ofdm %x\n",
sc->rxon.chan, sc->rxon.flags, sc->rxon.cck_mask,
sc->rxon.ofdm_mask);
if ((error = wpi_send_rxon(sc, 0, 1)) != 0) {
device_printf(sc->sc_dev, "%s: could not send RXON\n",
__func__);
}
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__);
WPI_RXON_UNLOCK(sc);
return error;
}
static int
wpi_config_beacon(struct wpi_vap *wvp)
{
struct ieee80211com *ic = wvp->wv_vap.iv_ic;
struct ieee80211_beacon_offsets *bo = &wvp->wv_boff;
struct wpi_buf *bcn = &wvp->wv_bcbuf;
struct wpi_softc *sc = ic->ic_ifp->if_softc;
struct wpi_cmd_beacon *cmd = (struct wpi_cmd_beacon *)&bcn->data;
struct ieee80211_tim_ie *tie;
struct mbuf *m;
uint8_t *ptr;
int error;
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);
WPI_VAP_LOCK_ASSERT(wvp);
cmd->len = htole16(bcn->m->m_pkthdr.len);
cmd->plcp = (ic->ic_curmode == IEEE80211_MODE_11A) ?
wpi_ridx_to_plcp[WPI_RIDX_OFDM6] : wpi_ridx_to_plcp[WPI_RIDX_CCK1];
/* XXX seems to be unused */
if (*(bo->bo_tim) == IEEE80211_ELEMID_TIM) {
tie = (struct ieee80211_tim_ie *) bo->bo_tim;
ptr = mtod(bcn->m, uint8_t *);
cmd->tim = htole16(bo->bo_tim - ptr);
cmd->timsz = tie->tim_len;
}
/* Necessary for recursion in ieee80211_beacon_update(). */
m = bcn->m;
bcn->m = m_dup(m, M_NOWAIT);
if (bcn->m == NULL) {
device_printf(sc->sc_dev,
"%s: could not copy beacon frame\n", __func__);
error = ENOMEM;
goto end;
}
if ((error = wpi_cmd2(sc, bcn)) != 0) {
device_printf(sc->sc_dev,
"%s: could not update beacon frame, error %d", __func__,
error);
}
/* Restore mbuf. */
end: bcn->m = m;
return error;
}
static int
wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni)
{
struct wpi_vap *wvp = WPI_VAP(ni->ni_vap);
struct wpi_buf *bcn = &wvp->wv_bcbuf;
struct ieee80211_beacon_offsets *bo = &wvp->wv_boff;
struct mbuf *m;
int error;
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);
if (ni->ni_chan == IEEE80211_CHAN_ANYC)
return EINVAL;
m = ieee80211_beacon_alloc(ni, bo);
if (m == NULL) {
device_printf(sc->sc_dev,
"%s: could not allocate beacon frame\n", __func__);
return ENOMEM;
}
WPI_VAP_LOCK(wvp);
if (bcn->m != NULL)
m_freem(bcn->m);
bcn->m = m;
error = wpi_config_beacon(wvp);
WPI_VAP_UNLOCK(wvp);
return error;
}
static void
wpi_update_beacon(struct ieee80211vap *vap, int item)
{
struct wpi_softc *sc = vap->iv_ic->ic_ifp->if_softc;
struct wpi_vap *wvp = WPI_VAP(vap);
struct wpi_buf *bcn = &wvp->wv_bcbuf;
struct ieee80211_beacon_offsets *bo = &wvp->wv_boff;
struct ieee80211_node *ni = vap->iv_bss;
int mcast = 0;
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__);
WPI_VAP_LOCK(wvp);
if (bcn->m == NULL) {
bcn->m = ieee80211_beacon_alloc(ni, bo);
if (bcn->m == NULL) {
device_printf(sc->sc_dev,
"%s: could not allocate beacon frame\n", __func__);
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR,
__func__);
WPI_VAP_UNLOCK(wvp);
return;
}
}
WPI_VAP_UNLOCK(wvp);
if (item == IEEE80211_BEACON_TIM)
mcast = 1; /* TODO */
setbit(bo->bo_flags, item);
ieee80211_beacon_update(ni, bo, bcn->m, mcast);
WPI_VAP_LOCK(wvp);
wpi_config_beacon(wvp);
WPI_VAP_UNLOCK(wvp);
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__);
}
static void
wpi_newassoc(struct ieee80211_node *ni, int isnew)
{
struct ieee80211vap *vap = ni->ni_vap;
struct wpi_softc *sc = ni->ni_ic->ic_ifp->if_softc;
struct wpi_node *wn = WPI_NODE(ni);
int error;
WPI_NT_LOCK(sc);
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);
if (vap->iv_opmode != IEEE80211_M_STA && wn->id == WPI_ID_UNDEFINED) {
if ((error = wpi_add_ibss_node(sc, ni)) != 0) {
device_printf(sc->sc_dev,
"%s: could not add IBSS node, error %d\n",
__func__, error);
}
}
WPI_NT_UNLOCK(sc);
}
static int
wpi_run(struct wpi_softc *sc, struct ieee80211vap *vap)
{
struct ieee80211com *ic = vap->iv_ic;
struct ieee80211_node *ni = vap->iv_bss;
struct ieee80211_channel *c = ni->ni_chan;
int error;
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__);
if (vap->iv_opmode == IEEE80211_M_MONITOR) {
/* Link LED blinks while monitoring. */
wpi_set_led(sc, WPI_LED_LINK, 5, 5);
return 0;
}
/* XXX kernel panic workaround */
if (c == IEEE80211_CHAN_ANYC) {
device_printf(sc->sc_dev, "%s: incomplete configuration\n",
__func__);
return EINVAL;
}
if ((error = wpi_set_timing(sc, ni)) != 0) {
device_printf(sc->sc_dev,
"%s: could not set timing, error %d\n", __func__, error);
return error;
}
/* Update adapter configuration. */
WPI_RXON_LOCK(sc);
IEEE80211_ADDR_COPY(sc->rxon.bssid, ni->ni_bssid);
sc->rxon.associd = htole16(IEEE80211_NODE_AID(ni));
sc->rxon.chan = ieee80211_chan2ieee(ic, c);
sc->rxon.flags = htole32(WPI_RXON_TSF | WPI_RXON_CTS_TO_SELF);
if (IEEE80211_IS_CHAN_2GHZ(c))
sc->rxon.flags |= htole32(WPI_RXON_AUTO | WPI_RXON_24GHZ);
if (ic->ic_flags & IEEE80211_F_SHSLOT)
sc->rxon.flags |= htole32(WPI_RXON_SHSLOT);
if (ic->ic_flags & IEEE80211_F_SHPREAMBLE)
sc->rxon.flags |= htole32(WPI_RXON_SHPREAMBLE);
if (IEEE80211_IS_CHAN_A(c)) {
sc->rxon.cck_mask = 0;
sc->rxon.ofdm_mask = 0x15;
} else if (IEEE80211_IS_CHAN_B(c)) {
sc->rxon.cck_mask = 0x03;
sc->rxon.ofdm_mask = 0;
} else {
/* Assume 802.11b/g. */
sc->rxon.cck_mask = 0x0f;
sc->rxon.ofdm_mask = 0x15;
}
sc->rxon.filter |= htole32(WPI_FILTER_BSS);
DPRINTF(sc, WPI_DEBUG_STATE, "rxon chan %d flags %x\n",
sc->rxon.chan, sc->rxon.flags);
if ((error = wpi_send_rxon(sc, 0, 1)) != 0) {
device_printf(sc->sc_dev, "%s: could not send RXON\n",
__func__);
return error;
}
/* Start periodic calibration timer. */
callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc);
WPI_RXON_UNLOCK(sc);
if (vap->iv_opmode == IEEE80211_M_IBSS ||
vap->iv_opmode == IEEE80211_M_HOSTAP) {
if ((error = wpi_setup_beacon(sc, ni)) != 0) {
device_printf(sc->sc_dev,
"%s: could not setup beacon, error %d\n", __func__,
error);
return error;
}
}
if (vap->iv_opmode == IEEE80211_M_STA) {
/* Add BSS node. */
WPI_NT_LOCK(sc);
error = wpi_add_sta_node(sc, ni);
WPI_NT_UNLOCK(sc);
if (error != 0) {
device_printf(sc->sc_dev,
"%s: could not add BSS node, error %d\n", __func__,
error);
return error;
}
}
/* Link LED always on while associated. */
wpi_set_led(sc, WPI_LED_LINK, 0, 1);
/* Enable power-saving mode if requested by user. */
if ((vap->iv_flags & IEEE80211_F_PMGTON) &&
vap->iv_opmode != IEEE80211_M_IBSS)
(void)wpi_set_pslevel(sc, 0, 3, 1);
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__);
return 0;
}
static int
wpi_load_key(struct ieee80211_node *ni, const struct ieee80211_key *k)
{
const struct ieee80211_cipher *cip = k->wk_cipher;
struct ieee80211vap *vap = ni->ni_vap;
struct wpi_softc *sc = ni->ni_ic->ic_ifp->if_softc;
struct wpi_node *wn = WPI_NODE(ni);
struct wpi_node_info node;
uint16_t kflags;
int error;
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);
if (wpi_check_node_entry(sc, wn->id) == 0) {
device_printf(sc->sc_dev, "%s: node does not exist\n",
__func__);
return 0;
}
switch (cip->ic_cipher) {
case IEEE80211_CIPHER_AES_CCM:
kflags = WPI_KFLAG_CCMP;
break;
default:
device_printf(sc->sc_dev, "%s: unknown cipher %d\n", __func__,
cip->ic_cipher);
return 0;
}
kflags |= WPI_KFLAG_KID(k->wk_keyix);
if (k->wk_flags & IEEE80211_KEY_GROUP)
kflags |= WPI_KFLAG_MULTICAST;
memset(&node, 0, sizeof node);
node.id = wn->id;
node.control = WPI_NODE_UPDATE;
node.flags = WPI_FLAG_KEY_SET;
node.kflags = htole16(kflags);
memcpy(node.key, k->wk_key, k->wk_keylen);
again:
DPRINTF(sc, WPI_DEBUG_KEY,
"%s: setting %s key id %d for node %d (%s)\n", __func__,
(kflags & WPI_KFLAG_MULTICAST) ? "group" : "ucast", k->wk_keyix,
node.id, ether_sprintf(ni->ni_macaddr));
error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1);
if (error != 0) {
device_printf(sc->sc_dev, "can't update node info, error %d\n",
error);
return !error;
}
if (!(kflags & WPI_KFLAG_MULTICAST) && &vap->iv_nw_keys[0] <= k &&
k < &vap->iv_nw_keys[IEEE80211_WEP_NKID]) {
kflags |= WPI_KFLAG_MULTICAST;
node.kflags = htole16(kflags);
goto again;
}
return 1;
}
static void
wpi_load_key_cb(void *arg, struct ieee80211_node *ni)
{
const struct ieee80211_key *k = arg;
struct ieee80211vap *vap = ni->ni_vap;
struct wpi_softc *sc = ni->ni_ic->ic_ifp->if_softc;
struct wpi_node *wn = WPI_NODE(ni);
int error;
if (vap->iv_bss == ni && wn->id == WPI_ID_UNDEFINED)
return;
WPI_NT_LOCK(sc);
error = wpi_load_key(ni, k);
WPI_NT_UNLOCK(sc);
if (error == 0) {
device_printf(sc->sc_dev, "%s: error while setting key\n",
__func__);
}
}
static int
wpi_set_global_keys(struct ieee80211_node *ni)
{
struct ieee80211vap *vap = ni->ni_vap;
struct ieee80211_key *wk = &vap->iv_nw_keys[0];
int error = 1;
for (; wk < &vap->iv_nw_keys[IEEE80211_WEP_NKID] && error; wk++)
if (wk->wk_keyix != IEEE80211_KEYIX_NONE)
error = wpi_load_key(ni, wk);
return !error;
}
static int
wpi_del_key(struct ieee80211_node *ni, const struct ieee80211_key *k)
{
struct ieee80211vap *vap = ni->ni_vap;
struct wpi_softc *sc = ni->ni_ic->ic_ifp->if_softc;
struct wpi_node *wn = WPI_NODE(ni);
struct wpi_node_info node;
uint16_t kflags;
int error;
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);
if (wpi_check_node_entry(sc, wn->id) == 0) {
DPRINTF(sc, WPI_DEBUG_KEY, "%s: node was removed\n", __func__);
return 1; /* Nothing to do. */
}
kflags = WPI_KFLAG_KID(k->wk_keyix);
if (k->wk_flags & IEEE80211_KEY_GROUP)
kflags |= WPI_KFLAG_MULTICAST;
memset(&node, 0, sizeof node);
node.id = wn->id;
node.control = WPI_NODE_UPDATE;
node.flags = WPI_FLAG_KEY_SET;
node.kflags = htole16(kflags);
again:
DPRINTF(sc, WPI_DEBUG_KEY, "%s: deleting %s key %d for node %d (%s)\n",
__func__, (kflags & WPI_KFLAG_MULTICAST) ? "group" : "ucast",
k->wk_keyix, node.id, ether_sprintf(ni->ni_macaddr));
error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1);
if (error != 0) {
device_printf(sc->sc_dev, "can't update node info, error %d\n",
error);
return !error;
}
if (!(kflags & WPI_KFLAG_MULTICAST) && &vap->iv_nw_keys[0] <= k &&
k < &vap->iv_nw_keys[IEEE80211_WEP_NKID]) {
kflags |= WPI_KFLAG_MULTICAST;
node.kflags = htole16(kflags);
goto again;
}
return 1;
}
static void
wpi_del_key_cb(void *arg, struct ieee80211_node *ni)
{
const struct ieee80211_key *k = arg;
struct ieee80211vap *vap = ni->ni_vap;
struct wpi_softc *sc = ni->ni_ic->ic_ifp->if_softc;
struct wpi_node *wn = WPI_NODE(ni);
int error;
if (vap->iv_bss == ni && wn->id == WPI_ID_UNDEFINED)
return;
WPI_NT_LOCK(sc);
error = wpi_del_key(ni, k);
WPI_NT_UNLOCK(sc);
if (error == 0) {
device_printf(sc->sc_dev, "%s: error while deleting key\n",
__func__);
}
}
static int
wpi_process_key(struct ieee80211vap *vap, const struct ieee80211_key *k,
int set)
{
struct ieee80211com *ic = vap->iv_ic;
struct wpi_softc *sc = ic->ic_ifp->if_softc;
struct wpi_vap *wvp = WPI_VAP(vap);
struct ieee80211_node *ni;
int error, ni_ref = 0;
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);
if (k->wk_flags & IEEE80211_KEY_SWCRYPT) {
/* Not for us. */
return 1;
}
if (!(k->wk_flags & IEEE80211_KEY_RECV)) {
/* XMIT keys are handled in wpi_tx_data(). */
return 1;
}
/* Handle group keys. */
if (&vap->iv_nw_keys[0] <= k &&
k < &vap->iv_nw_keys[IEEE80211_WEP_NKID]) {
WPI_NT_LOCK(sc);
if (set)
wvp->wv_gtk |= WPI_VAP_KEY(k->wk_keyix);
else
wvp->wv_gtk &= ~WPI_VAP_KEY(k->wk_keyix);
WPI_NT_UNLOCK(sc);
if (vap->iv_state == IEEE80211_S_RUN) {
ieee80211_iterate_nodes(&ic->ic_sta,
set ? wpi_load_key_cb : wpi_del_key_cb,
__DECONST(void *, k));
}
return 1;
}
switch (vap->iv_opmode) {
case IEEE80211_M_STA:
ni = vap->iv_bss;
break;
case IEEE80211_M_IBSS:
case IEEE80211_M_AHDEMO:
case IEEE80211_M_HOSTAP:
ni = ieee80211_find_vap_node(&ic->ic_sta, vap, k->wk_macaddr);
if (ni == NULL)
return 0; /* should not happen */
ni_ref = 1;
break;
default:
device_printf(sc->sc_dev, "%s: unknown opmode %d\n", __func__,
vap->iv_opmode);
return 0;
}
WPI_NT_LOCK(sc);
if (set)
error = wpi_load_key(ni, k);
else
error = wpi_del_key(ni, k);
WPI_NT_UNLOCK(sc);
if (ni_ref)
ieee80211_node_decref(ni);
return error;
}
static int
wpi_key_set(struct ieee80211vap *vap, const struct ieee80211_key *k,
const uint8_t mac[IEEE80211_ADDR_LEN])
{
return wpi_process_key(vap, k, 1);
}
static int
wpi_key_delete(struct ieee80211vap *vap, const struct ieee80211_key *k)
{
return wpi_process_key(vap, k, 0);
}
/*
* This function is called after the runtime firmware notifies us of its
* readiness (called in a process context).
*/
static int
wpi_post_alive(struct wpi_softc *sc)
{
int ntries, error;
/* Check (again) that the radio is not disabled. */
if ((error = wpi_nic_lock(sc)) != 0)
return error;
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);
/* NB: Runtime firmware must be up and running. */
if (!(wpi_prph_read(sc, WPI_APMG_RFKILL) & 1)) {
device_printf(sc->sc_dev,
"RF switch: radio disabled (%s)\n", __func__);
wpi_nic_unlock(sc);
return EPERM; /* :-) */
}
wpi_nic_unlock(sc);
/* Wait for thermal sensor to calibrate. */
for (ntries = 0; ntries < 1000; ntries++) {
if ((sc->temp = (int)WPI_READ(sc, WPI_UCODE_GP2)) != 0)
break;
DELAY(10);
}
if (ntries == 1000) {
device_printf(sc->sc_dev,
"timeout waiting for thermal sensor calibration\n");
return ETIMEDOUT;
}
DPRINTF(sc, WPI_DEBUG_TEMP, "temperature %d\n", sc->temp);
return 0;
}
/*
* The firmware boot code is small and is intended to be copied directly into
* the NIC internal memory (no DMA transfer).
*/
static int
wpi_load_bootcode(struct wpi_softc *sc, const uint8_t *ucode, int size)
{
int error, ntries;
DPRINTF(sc, WPI_DEBUG_HW, "Loading microcode size 0x%x\n", size);
size /= sizeof (uint32_t);
if ((error = wpi_nic_lock(sc)) != 0)
return error;
/* Copy microcode image into NIC memory. */
wpi_prph_write_region_4(sc, WPI_BSM_SRAM_BASE,
(const uint32_t *)ucode, size);
wpi_prph_write(sc, WPI_BSM_WR_MEM_SRC, 0);
wpi_prph_write(sc, WPI_BSM_WR_MEM_DST, WPI_FW_TEXT_BASE);
wpi_prph_write(sc, WPI_BSM_WR_DWCOUNT, size);
/* Start boot load now. */
wpi_prph_write(sc, WPI_BSM_WR_CTRL, WPI_BSM_WR_CTRL_START);
/* Wait for transfer to complete. */
for (ntries = 0; ntries < 1000; ntries++) {
uint32_t status = WPI_READ(sc, WPI_FH_TX_STATUS);
DPRINTF(sc, WPI_DEBUG_HW,
"firmware status=0x%x, val=0x%x, result=0x%x\n", status,
WPI_FH_TX_STATUS_IDLE(6),
status & WPI_FH_TX_STATUS_IDLE(6));
if (status & WPI_FH_TX_STATUS_IDLE(6)) {
DPRINTF(sc, WPI_DEBUG_HW,
"Status Match! - ntries = %d\n", ntries);
break;
}
DELAY(10);
}
if (ntries == 1000) {
device_printf(sc->sc_dev, "%s: could not load boot firmware\n",
__func__);
wpi_nic_unlock(sc);
return ETIMEDOUT;
}
/* Enable boot after power up. */
wpi_prph_write(sc, WPI_BSM_WR_CTRL, WPI_BSM_WR_CTRL_START_EN);
wpi_nic_unlock(sc);
return 0;
}
static int
wpi_load_firmware(struct wpi_softc *sc)
{
struct wpi_fw_info *fw = &sc->fw;
struct wpi_dma_info *dma = &sc->fw_dma;
int error;
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);
/* Copy initialization sections into pre-allocated DMA-safe memory. */
memcpy(dma->vaddr, fw->init.data, fw->init.datasz);
bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE);
memcpy(dma->vaddr + WPI_FW_DATA_MAXSZ, fw->init.text, fw->init.textsz);
bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE);
/* Tell adapter where to find initialization sections. */
if ((error = wpi_nic_lock(sc)) != 0)
return error;
wpi_prph_write(sc, WPI_BSM_DRAM_DATA_ADDR, dma->paddr);
wpi_prph_write(sc, WPI_BSM_DRAM_DATA_SIZE, fw->init.datasz);
wpi_prph_write(sc, WPI_BSM_DRAM_TEXT_ADDR,
dma->paddr + WPI_FW_DATA_MAXSZ);
wpi_prph_write(sc, WPI_BSM_DRAM_TEXT_SIZE, fw->init.textsz);
wpi_nic_unlock(sc);
/* Load firmware boot code. */
error = wpi_load_bootcode(sc, fw->boot.text, fw->boot.textsz);
if (error != 0) {
device_printf(sc->sc_dev, "%s: could not load boot firmware\n",
__func__);
return error;
}
/* Now press "execute". */
WPI_WRITE(sc, WPI_RESET, 0);
/* Wait at most one second for first alive notification. */
if ((error = mtx_sleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) {
device_printf(sc->sc_dev,
"%s: timeout waiting for adapter to initialize, error %d\n",
__func__, error);
return error;
}
/* Copy runtime sections into pre-allocated DMA-safe memory. */
memcpy(dma->vaddr, fw->main.data, fw->main.datasz);
bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE);
memcpy(dma->vaddr + WPI_FW_DATA_MAXSZ, fw->main.text, fw->main.textsz);
bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE);
/* Tell adapter where to find runtime sections. */
if ((error = wpi_nic_lock(sc)) != 0)
return error;
wpi_prph_write(sc, WPI_BSM_DRAM_DATA_ADDR, dma->paddr);
wpi_prph_write(sc, WPI_BSM_DRAM_DATA_SIZE, fw->main.datasz);
wpi_prph_write(sc, WPI_BSM_DRAM_TEXT_ADDR,
dma->paddr + WPI_FW_DATA_MAXSZ);
wpi_prph_write(sc, WPI_BSM_DRAM_TEXT_SIZE,
WPI_FW_UPDATED | fw->main.textsz);
wpi_nic_unlock(sc);
return 0;
}
static int
wpi_read_firmware(struct wpi_softc *sc)
{
const struct firmware *fp;
struct wpi_fw_info *fw = &sc->fw;
const struct wpi_firmware_hdr *hdr;
int error;
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);
DPRINTF(sc, WPI_DEBUG_FIRMWARE,
"Attempting Loading Firmware from %s module\n", WPI_FW_NAME);
WPI_UNLOCK(sc);
fp = firmware_get(WPI_FW_NAME);
WPI_LOCK(sc);
if (fp == NULL) {
device_printf(sc->sc_dev,
"could not load firmware image '%s'\n", WPI_FW_NAME);
return EINVAL;
}
sc->fw_fp = fp;
if (fp->datasize < sizeof (struct wpi_firmware_hdr)) {
device_printf(sc->sc_dev,
"firmware file too short: %zu bytes\n", fp->datasize);
error = EINVAL;
goto fail;
}
fw->size = fp->datasize;
fw->data = (const uint8_t *)fp->data;
/* Extract firmware header information. */
hdr = (const struct wpi_firmware_hdr *)fw->data;
/* | RUNTIME FIRMWARE | INIT FIRMWARE | BOOT FW |
|HDR|<--TEXT-->|<--DATA-->|<--TEXT-->|<--DATA-->|<--TEXT-->| */
fw->main.textsz = le32toh(hdr->rtextsz);
fw->main.datasz = le32toh(hdr->rdatasz);
fw->init.textsz = le32toh(hdr->itextsz);
fw->init.datasz = le32toh(hdr->idatasz);
fw->boot.textsz = le32toh(hdr->btextsz);
fw->boot.datasz = 0;
/* Sanity-check firmware header. */
if (fw->main.textsz > WPI_FW_TEXT_MAXSZ ||
fw->main.datasz > WPI_FW_DATA_MAXSZ ||
fw->init.textsz > WPI_FW_TEXT_MAXSZ ||
fw->init.datasz > WPI_FW_DATA_MAXSZ ||
fw->boot.textsz > WPI_FW_BOOT_TEXT_MAXSZ ||
(fw->boot.textsz & 3) != 0) {
device_printf(sc->sc_dev, "invalid firmware header\n");
error = EINVAL;
goto fail;
}
/* Check that all firmware sections fit. */
if (fw->size < sizeof (*hdr) + fw->main.textsz + fw->main.datasz +
fw->init.textsz + fw->init.datasz + fw->boot.textsz) {
device_printf(sc->sc_dev,
"firmware file too short: %zu bytes\n", fw->size);
error = EINVAL;
goto fail;
}
/* Get pointers to firmware sections. */
fw->main.text = (const uint8_t *)(hdr + 1);
fw->main.data = fw->main.text + fw->main.textsz;
fw->init.text = fw->main.data + fw->main.datasz;
fw->init.data = fw->init.text + fw->init.textsz;
fw->boot.text = fw->init.data + fw->init.datasz;
DPRINTF(sc, WPI_DEBUG_FIRMWARE,
"Firmware Version: Major %d, Minor %d, Driver %d, \n"
"runtime (text: %u, data: %u) init (text: %u, data %u) "
"boot (text %u)\n", hdr->major, hdr->minor, le32toh(hdr->driver),
fw->main.textsz, fw->main.datasz,
fw->init.textsz, fw->init.datasz, fw->boot.textsz);
DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->main.text %p\n", fw->main.text);
DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->main.data %p\n", fw->main.data);
DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->init.text %p\n", fw->init.text);
DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->init.data %p\n", fw->init.data);
DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->boot.text %p\n", fw->boot.text);
return 0;
fail: wpi_unload_firmware(sc);
return error;
}
/**
* Free the referenced firmware image
*/
static void
wpi_unload_firmware(struct wpi_softc *sc)
{
if (sc->fw_fp != NULL) {
firmware_put(sc->fw_fp, FIRMWARE_UNLOAD);
sc->fw_fp = NULL;
}
}
static int
wpi_clock_wait(struct wpi_softc *sc)
{
int ntries;
/* Set "initialization complete" bit. */
WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_INIT_DONE);
/* Wait for clock stabilization. */
for (ntries = 0; ntries < 2500; ntries++) {
if (WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_MAC_CLOCK_READY)
return 0;
DELAY(100);
}
device_printf(sc->sc_dev,
"%s: timeout waiting for clock stabilization\n", __func__);
return ETIMEDOUT;
}
static int
wpi_apm_init(struct wpi_softc *sc)
{
uint32_t reg;
int error;
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);
/* Disable L0s exit timer (NMI bug workaround). */
WPI_SETBITS(sc, WPI_GIO_CHICKEN, WPI_GIO_CHICKEN_DIS_L0S_TIMER);
/* Don't wait for ICH L0s (ICH bug workaround). */
WPI_SETBITS(sc, WPI_GIO_CHICKEN, WPI_GIO_CHICKEN_L1A_NO_L0S_RX);
/* Set FH wait threshold to max (HW bug under stress workaround). */
WPI_SETBITS(sc, WPI_DBG_HPET_MEM, 0xffff0000);
/* Retrieve PCIe Active State Power Management (ASPM). */
reg = pci_read_config(sc->sc_dev, sc->sc_cap_off + 0x10, 1);
/* Workaround for HW instability in PCIe L0->L0s->L1 transition. */
if (reg & 0x02) /* L1 Entry enabled. */
WPI_SETBITS(sc, WPI_GIO, WPI_GIO_L0S_ENA);
else
WPI_CLRBITS(sc, WPI_GIO, WPI_GIO_L0S_ENA);
WPI_SETBITS(sc, WPI_ANA_PLL, WPI_ANA_PLL_INIT);
/* Wait for clock stabilization before accessing prph. */
if ((error = wpi_clock_wait(sc)) != 0)
return error;
if ((error = wpi_nic_lock(sc)) != 0)
return error;
/* Cleanup. */
wpi_prph_write(sc, WPI_APMG_CLK_DIS, 0x00000400);
wpi_prph_clrbits(sc, WPI_APMG_PS, 0x00000200);
/* Enable DMA and BSM (Bootstrap State Machine). */
wpi_prph_write(sc, WPI_APMG_CLK_EN,
WPI_APMG_CLK_CTRL_DMA_CLK_RQT | WPI_APMG_CLK_CTRL_BSM_CLK_RQT);
DELAY(20);
/* Disable L1-Active. */
wpi_prph_setbits(sc, WPI_APMG_PCI_STT, WPI_APMG_PCI_STT_L1A_DIS);
wpi_nic_unlock(sc);
return 0;
}
static void
wpi_apm_stop_master(struct wpi_softc *sc)
{
int ntries;
/* Stop busmaster DMA activity. */
WPI_SETBITS(sc, WPI_RESET, WPI_RESET_STOP_MASTER);
if ((WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_PS_MASK) ==
WPI_GP_CNTRL_MAC_PS)
return; /* Already asleep. */
for (ntries = 0; ntries < 100; ntries++) {
if (WPI_READ(sc, WPI_RESET) & WPI_RESET_MASTER_DISABLED)
return;
DELAY(10);
}
device_printf(sc->sc_dev, "%s: timeout waiting for master\n",
__func__);
}
static void
wpi_apm_stop(struct wpi_softc *sc)
{
wpi_apm_stop_master(sc);
/* Reset the entire device. */
WPI_SETBITS(sc, WPI_RESET, WPI_RESET_SW);
DELAY(10);
/* Clear "initialization complete" bit. */
WPI_CLRBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_INIT_DONE);
}
static void
wpi_nic_config(struct wpi_softc *sc)
{
uint32_t rev;
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);
/* voodoo from the Linux "driver".. */
rev = pci_read_config(sc->sc_dev, PCIR_REVID, 1);
if ((rev & 0xc0) == 0x40)
WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_ALM_MB);
else if (!(rev & 0x80))
WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_ALM_MM);
if (sc->cap == 0x80)
WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_SKU_MRC);
if ((sc->rev & 0xf0) == 0xd0)
WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_REV_D);
else
WPI_CLRBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_REV_D);
if (sc->type > 1)
WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_TYPE_B);
}
static int
wpi_hw_init(struct wpi_softc *sc)
{
int chnl, ntries, error;
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__);
/* Clear pending interrupts. */
WPI_WRITE(sc, WPI_INT, 0xffffffff);
if ((error = wpi_apm_init(sc)) != 0) {
device_printf(sc->sc_dev,
"%s: could not power ON adapter, error %d\n", __func__,
error);
return error;
}
/* Select VMAIN power source. */
if ((error = wpi_nic_lock(sc)) != 0)
return error;
wpi_prph_clrbits(sc, WPI_APMG_PS, WPI_APMG_PS_PWR_SRC_MASK);
wpi_nic_unlock(sc);
/* Spin until VMAIN gets selected. */
for (ntries = 0; ntries < 5000; ntries++) {
if (WPI_READ(sc, WPI_GPIO_IN) & WPI_GPIO_IN_VMAIN)
break;
DELAY(10);
}
if (ntries == 5000) {
device_printf(sc->sc_dev, "timeout selecting power source\n");
return ETIMEDOUT;
}
/* Perform adapter initialization. */
wpi_nic_config(sc);
/* Initialize RX ring. */
if ((error = wpi_nic_lock(sc)) != 0)
return error;
/* Set physical address of RX ring. */
WPI_WRITE(sc, WPI_FH_RX_BASE, sc->rxq.desc_dma.paddr);
/* Set physical address of RX read pointer. */
WPI_WRITE(sc, WPI_FH_RX_RPTR_ADDR, sc->shared_dma.paddr +
offsetof(struct wpi_shared, next));
WPI_WRITE(sc, WPI_FH_RX_WPTR, 0);
/* Enable RX. */
WPI_WRITE(sc, WPI_FH_RX_CONFIG,
WPI_FH_RX_CONFIG_DMA_ENA |
WPI_FH_RX_CONFIG_RDRBD_ENA |
WPI_FH_RX_CONFIG_WRSTATUS_ENA |
WPI_FH_RX_CONFIG_MAXFRAG |
WPI_FH_RX_CONFIG_NRBD(WPI_RX_RING_COUNT_LOG) |
WPI_FH_RX_CONFIG_IRQ_DST_HOST |
WPI_FH_RX_CONFIG_IRQ_TIMEOUT(1));
(void)WPI_READ(sc, WPI_FH_RSSR_TBL); /* barrier */
wpi_nic_unlock(sc);
WPI_WRITE(sc, WPI_FH_RX_WPTR, (WPI_RX_RING_COUNT - 1) & ~7);
/* Initialize TX rings. */
if ((error = wpi_nic_lock(sc)) != 0)
return error;
wpi_prph_write(sc, WPI_ALM_SCHED_MODE, 2); /* bypass mode */
wpi_prph_write(sc, WPI_ALM_SCHED_ARASTAT, 1); /* enable RA0 */
/* Enable all 6 TX rings. */
wpi_prph_write(sc, WPI_ALM_SCHED_TXFACT, 0x3f);
wpi_prph_write(sc, WPI_ALM_SCHED_SBYPASS_MODE1, 0x10000);
wpi_prph_write(sc, WPI_ALM_SCHED_SBYPASS_MODE2, 0x30002);
wpi_prph_write(sc, WPI_ALM_SCHED_TXF4MF, 4);
wpi_prph_write(sc, WPI_ALM_SCHED_TXF5MF, 5);
/* Set physical address of TX rings. */
WPI_WRITE(sc, WPI_FH_TX_BASE, sc->shared_dma.paddr);
WPI_WRITE(sc, WPI_FH_MSG_CONFIG, 0xffff05a5);
/* Enable all DMA channels. */
for (chnl = 0; chnl < WPI_NDMACHNLS; chnl++) {
WPI_WRITE(sc, WPI_FH_CBBC_CTRL(chnl), 0);
WPI_WRITE(sc, WPI_FH_CBBC_BASE(chnl), 0);
WPI_WRITE(sc, WPI_FH_TX_CONFIG(chnl), 0x80200008);
}
wpi_nic_unlock(sc);
(void)WPI_READ(sc, WPI_FH_TX_BASE); /* barrier */
/* Clear "radio off" and "commands blocked" bits. */
WPI_WRITE(sc, WPI_UCODE_GP1_CLR, WPI_UCODE_GP1_RFKILL);
WPI_WRITE(sc, WPI_UCODE_GP1_CLR, WPI_UCODE_GP1_CMD_BLOCKED);
/* Clear pending interrupts. */
WPI_WRITE(sc, WPI_INT, 0xffffffff);
/* Enable interrupts. */
WPI_WRITE(sc, WPI_INT_MASK, WPI_INT_MASK_DEF);
/* _Really_ make sure "radio off" bit is cleared! */
WPI_WRITE(sc, WPI_UCODE_GP1_CLR, WPI_UCODE_GP1_RFKILL);
WPI_WRITE(sc, WPI_UCODE_GP1_CLR, WPI_UCODE_GP1_RFKILL);
if ((error = wpi_load_firmware(sc)) != 0) {
device_printf(sc->sc_dev,
"%s: could not load firmware, error %d\n", __func__,
error);
return error;
}
/* Wait at most one second for firmware alive notification. */
if ((error = mtx_sleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) {
device_printf(sc->sc_dev,
"%s: timeout waiting for adapter to initialize, error %d\n",
__func__, error);
return error;
}
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__);
/* Do post-firmware initialization. */
return wpi_post_alive(sc);
}
static void
wpi_hw_stop(struct wpi_softc *sc)
{
int chnl, qid, ntries;
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);
if (WPI_READ(sc, WPI_UCODE_GP1) & WPI_UCODE_GP1_MAC_SLEEP)
wpi_nic_lock(sc);
WPI_WRITE(sc, WPI_RESET, WPI_RESET_NEVO);
/* Disable interrupts. */
WPI_WRITE(sc, WPI_INT_MASK, 0);
WPI_WRITE(sc, WPI_INT, 0xffffffff);
WPI_WRITE(sc, WPI_FH_INT, 0xffffffff);
/* Make sure we no longer hold the NIC lock. */
wpi_nic_unlock(sc);
if (wpi_nic_lock(sc) == 0) {
/* Stop TX scheduler. */
wpi_prph_write(sc, WPI_ALM_SCHED_MODE, 0);
wpi_prph_write(sc, WPI_ALM_SCHED_TXFACT, 0);
/* Stop all DMA channels. */
for (chnl = 0; chnl < WPI_NDMACHNLS; chnl++) {
WPI_WRITE(sc, WPI_FH_TX_CONFIG(chnl), 0);
for (ntries = 0; ntries < 200; ntries++) {
if (WPI_READ(sc, WPI_FH_TX_STATUS) &
WPI_FH_TX_STATUS_IDLE(chnl))
break;
DELAY(10);
}
}
wpi_nic_unlock(sc);
}
/* Stop RX ring. */
wpi_reset_rx_ring(sc);
/* Reset all TX rings. */
for (qid = 0; qid < WPI_NTXQUEUES; qid++)
wpi_reset_tx_ring(sc, &sc->txq[qid]);
if (wpi_nic_lock(sc) == 0) {
wpi_prph_write(sc, WPI_APMG_CLK_DIS,
WPI_APMG_CLK_CTRL_DMA_CLK_RQT);
wpi_nic_unlock(sc);
}
DELAY(5);
/* Power OFF adapter. */
wpi_apm_stop(sc);
}
static void
wpi_radio_on(void *arg0, int pending)
{
struct wpi_softc *sc = arg0;
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
device_printf(sc->sc_dev, "RF switch: radio enabled\n");
if (vap != NULL) {
wpi_init(sc);
ieee80211_init(vap);
}
if (WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_RFKILL) {
WPI_LOCK(sc);
callout_stop(&sc->watchdog_rfkill);
WPI_UNLOCK(sc);
}
}
static void
wpi_radio_off(void *arg0, int pending)
{
struct wpi_softc *sc = arg0;
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
device_printf(sc->sc_dev, "RF switch: radio disabled\n");
wpi_stop(sc);
if (vap != NULL)
ieee80211_stop(vap);
WPI_LOCK(sc);
callout_reset(&sc->watchdog_rfkill, hz, wpi_watchdog_rfkill, sc);
WPI_UNLOCK(sc);
}
static void
wpi_init(void *arg)
{
struct wpi_softc *sc = arg;
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
int error;
WPI_LOCK(sc);
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__);
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
goto end;
/* Check that the radio is not disabled by hardware switch. */
if (!(WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_RFKILL)) {
device_printf(sc->sc_dev,
"RF switch: radio disabled (%s)\n", __func__);
callout_reset(&sc->watchdog_rfkill, hz, wpi_watchdog_rfkill,
sc);
goto end;
}
/* Read firmware images from the filesystem. */
if ((error = wpi_read_firmware(sc)) != 0) {
device_printf(sc->sc_dev,
"%s: could not read firmware, error %d\n", __func__,
error);
goto fail;
}
/* Initialize hardware and upload firmware. */
error = wpi_hw_init(sc);
wpi_unload_firmware(sc);
if (error != 0) {
device_printf(sc->sc_dev,
"%s: could not initialize hardware, error %d\n", __func__,
error);
goto fail;
}
/* Configure adapter now that it is ready. */
sc->txq_active = 1;
if ((error = wpi_config(sc)) != 0) {
device_printf(sc->sc_dev,
"%s: could not configure device, error %d\n", __func__,
error);
goto fail;
}
IF_LOCK(&ifp->if_snd);
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
ifp->if_drv_flags |= IFF_DRV_RUNNING;
IF_UNLOCK(&ifp->if_snd);
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__);
WPI_UNLOCK(sc);
ieee80211_start_all(ic);
return;
fail: wpi_stop_locked(sc);
end: DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__);
WPI_UNLOCK(sc);
}
static void
wpi_stop_locked(struct wpi_softc *sc)
{
struct ifnet *ifp = sc->sc_ifp;
WPI_LOCK_ASSERT(sc);
WPI_TXQ_LOCK(sc);
sc->txq_active = 0;
WPI_TXQ_UNLOCK(sc);
WPI_TXQ_STATE_LOCK(sc);
callout_stop(&sc->tx_timeout);
WPI_TXQ_STATE_UNLOCK(sc);
WPI_RXON_LOCK(sc);
callout_stop(&sc->scan_timeout);
callout_stop(&sc->calib_to);
WPI_RXON_UNLOCK(sc);
IF_LOCK(&ifp->if_snd);
ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
IF_UNLOCK(&ifp->if_snd);
/* Power OFF hardware. */
wpi_hw_stop(sc);
}
static void
wpi_stop(struct wpi_softc *sc)
{
WPI_LOCK(sc);
wpi_stop_locked(sc);
WPI_UNLOCK(sc);
}
/*
* Callback from net80211 to start a scan.
*/
static void
wpi_scan_start(struct ieee80211com *ic)
{
struct wpi_softc *sc = ic->ic_ifp->if_softc;
wpi_set_led(sc, WPI_LED_LINK, 20, 2);
}
/*
* Callback from net80211 to terminate a scan.
*/
static void
wpi_scan_end(struct ieee80211com *ic)
{
struct ifnet *ifp = ic->ic_ifp;
struct wpi_softc *sc = ifp->if_softc;
struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
if (vap->iv_state == IEEE80211_S_RUN)
wpi_set_led(sc, WPI_LED_LINK, 0, 1);
}
/**
* Called by the net80211 framework to indicate to the driver
* that the channel should be changed
*/
static void
wpi_set_channel(struct ieee80211com *ic)
{
const struct ieee80211_channel *c = ic->ic_curchan;
struct ifnet *ifp = ic->ic_ifp;
struct wpi_softc *sc = ifp->if_softc;
int error;
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);
WPI_LOCK(sc);
sc->sc_rxtap.wr_chan_freq = htole16(c->ic_freq);
sc->sc_rxtap.wr_chan_flags = htole16(c->ic_flags);
WPI_UNLOCK(sc);
WPI_TX_LOCK(sc);
sc->sc_txtap.wt_chan_freq = htole16(c->ic_freq);
sc->sc_txtap.wt_chan_flags = htole16(c->ic_flags);
WPI_TX_UNLOCK(sc);
/*
* Only need to set the channel in Monitor mode. AP scanning and auth
* are already taken care of by their respective firmware commands.
*/
if (ic->ic_opmode == IEEE80211_M_MONITOR) {
WPI_RXON_LOCK(sc);
sc->rxon.chan = ieee80211_chan2ieee(ic, c);
if (IEEE80211_IS_CHAN_2GHZ(c)) {
sc->rxon.flags |= htole32(WPI_RXON_AUTO |
WPI_RXON_24GHZ);
} else {
sc->rxon.flags &= ~htole32(WPI_RXON_AUTO |
WPI_RXON_24GHZ);
}
if ((error = wpi_send_rxon(sc, 0, 1)) != 0)
device_printf(sc->sc_dev,
"%s: error %d setting channel\n", __func__,
error);
WPI_RXON_UNLOCK(sc);
}
}
/**
* Called by net80211 to indicate that we need to scan the current
* channel. The channel is previously be set via the wpi_set_channel
* callback.
*/
static void
wpi_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell)
{
struct ieee80211vap *vap = ss->ss_vap;
struct ieee80211com *ic = vap->iv_ic;
struct wpi_softc *sc = ic->ic_ifp->if_softc;
int error;
WPI_RXON_LOCK(sc);
error = wpi_scan(sc, ic->ic_curchan);
WPI_RXON_UNLOCK(sc);
if (error != 0)
ieee80211_cancel_scan(vap);
}
/**
* Called by the net80211 framework to indicate
* the minimum dwell time has been met, terminate the scan.
* We don't actually terminate the scan as the firmware will notify
* us when it's finished and we have no way to interrupt it.
*/
static void
wpi_scan_mindwell(struct ieee80211_scan_state *ss)
{
/* NB: don't try to abort scan; wait for firmware to finish */
}
static void
wpi_hw_reset(void *arg, int pending)
{
struct wpi_softc *sc = arg;
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__);
if (vap != NULL && (ic->ic_flags & IEEE80211_F_SCAN))
ieee80211_cancel_scan(vap);
wpi_stop(sc);
if (vap != NULL)
ieee80211_stop(vap);
wpi_init(sc);
if (vap != NULL)
ieee80211_init(vap);
}
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