4629 lines
127 KiB
C
4629 lines
127 KiB
C
/*-
|
||
* Copyright (c) 2007
|
||
* Damien Bergamini <damien.bergamini@free.fr>
|
||
* Copyright (c) 2008
|
||
* Benjamin Close <benjsc@FreeBSD.org>
|
||
* Copyright (c) 2008 Sam Leffler, Errno Consulting
|
||
*
|
||
* 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.
|
||
*/
|
||
|
||
/*
|
||
* Driver for Intel Wireless WiFi Link 4965AGN 802.11 network adapters.
|
||
*/
|
||
|
||
#include <sys/cdefs.h>
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||
__FBSDID("$FreeBSD$");
|
||
|
||
#include <sys/param.h>
|
||
#include <sys/sockio.h>
|
||
#include <sys/sysctl.h>
|
||
#include <sys/mbuf.h>
|
||
#include <sys/kernel.h>
|
||
#include <sys/socket.h>
|
||
#include <sys/systm.h>
|
||
#include <sys/malloc.h>
|
||
#include <sys/bus.h>
|
||
#include <sys/rman.h>
|
||
#include <sys/endian.h>
|
||
#include <sys/firmware.h>
|
||
#include <sys/limits.h>
|
||
#include <sys/module.h>
|
||
#include <sys/queue.h>
|
||
#include <sys/taskqueue.h>
|
||
|
||
#include <machine/bus.h>
|
||
#include <machine/resource.h>
|
||
#include <machine/clock.h>
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||
|
||
#include <dev/pci/pcireg.h>
|
||
#include <dev/pci/pcivar.h>
|
||
|
||
#include <net/bpf.h>
|
||
#include <net/if.h>
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||
#include <net/if_arp.h>
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||
#include <net/ethernet.h>
|
||
#include <net/if_dl.h>
|
||
#include <net/if_media.h>
|
||
#include <net/if_types.h>
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||
|
||
#include <netinet/in.h>
|
||
#include <netinet/in_systm.h>
|
||
#include <netinet/in_var.h>
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||
#include <netinet/if_ether.h>
|
||
#include <netinet/ip.h>
|
||
|
||
#include <net80211/ieee80211_var.h>
|
||
#include <net80211/ieee80211_amrr.h>
|
||
#include <net80211/ieee80211_radiotap.h>
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||
#include <net80211/ieee80211_regdomain.h>
|
||
|
||
#include <dev/iwn/if_iwnreg.h>
|
||
#include <dev/iwn/if_iwnvar.h>
|
||
|
||
static int iwn_probe(device_t);
|
||
static int iwn_attach(device_t);
|
||
static int iwn_detach(device_t);
|
||
static int iwn_cleanup(device_t);
|
||
static struct ieee80211vap *iwn_vap_create(struct ieee80211com *,
|
||
const char name[IFNAMSIZ], int unit, int opmode,
|
||
int flags, const uint8_t bssid[IEEE80211_ADDR_LEN],
|
||
const uint8_t mac[IEEE80211_ADDR_LEN]);
|
||
static void iwn_vap_delete(struct ieee80211vap *);
|
||
static int iwn_shutdown(device_t);
|
||
static int iwn_suspend(device_t);
|
||
static int iwn_resume(device_t);
|
||
static int iwn_dma_contig_alloc(struct iwn_softc *, struct iwn_dma_info *,
|
||
void **, bus_size_t, bus_size_t, int);
|
||
static void iwn_dma_contig_free(struct iwn_dma_info *);
|
||
int iwn_alloc_shared(struct iwn_softc *);
|
||
void iwn_free_shared(struct iwn_softc *);
|
||
int iwn_alloc_kw(struct iwn_softc *);
|
||
void iwn_free_kw(struct iwn_softc *);
|
||
int iwn_alloc_fwmem(struct iwn_softc *);
|
||
void iwn_free_fwmem(struct iwn_softc *);
|
||
struct iwn_rbuf *iwn_alloc_rbuf(struct iwn_softc *);
|
||
void iwn_free_rbuf(void *, void *);
|
||
int iwn_alloc_rpool(struct iwn_softc *);
|
||
void iwn_free_rpool(struct iwn_softc *);
|
||
int iwn_alloc_rx_ring(struct iwn_softc *, struct iwn_rx_ring *);
|
||
void iwn_reset_rx_ring(struct iwn_softc *, struct iwn_rx_ring *);
|
||
void iwn_free_rx_ring(struct iwn_softc *, struct iwn_rx_ring *);
|
||
int iwn_alloc_tx_ring(struct iwn_softc *, struct iwn_tx_ring *,
|
||
int);
|
||
void iwn_reset_tx_ring(struct iwn_softc *, struct iwn_tx_ring *);
|
||
void iwn_free_tx_ring(struct iwn_softc *, struct iwn_tx_ring *);
|
||
static struct ieee80211_node *iwn_node_alloc(struct ieee80211vap *,
|
||
const uint8_t [IEEE80211_ADDR_LEN]);
|
||
void iwn_newassoc(struct ieee80211_node *, int);
|
||
int iwn_media_change(struct ifnet *);
|
||
int iwn_newstate(struct ieee80211vap *, enum ieee80211_state, int);
|
||
void iwn_mem_lock(struct iwn_softc *);
|
||
void iwn_mem_unlock(struct iwn_softc *);
|
||
uint32_t iwn_mem_read(struct iwn_softc *, uint32_t);
|
||
void iwn_mem_write(struct iwn_softc *, uint32_t, uint32_t);
|
||
void iwn_mem_write_region_4(struct iwn_softc *, uint32_t,
|
||
const uint32_t *, int);
|
||
int iwn_eeprom_lock(struct iwn_softc *);
|
||
void iwn_eeprom_unlock(struct iwn_softc *);
|
||
int iwn_read_prom_data(struct iwn_softc *, uint32_t, void *, int);
|
||
int iwn_transfer_microcode(struct iwn_softc *, const uint8_t *, int);
|
||
int iwn_transfer_firmware(struct iwn_softc *);
|
||
int iwn_load_firmware(struct iwn_softc *);
|
||
void iwn_unload_firmware(struct iwn_softc *);
|
||
static void iwn_timer_timeout(void *);
|
||
static void iwn_calib_reset(struct iwn_softc *);
|
||
void iwn_ampdu_rx_start(struct iwn_softc *, struct iwn_rx_desc *);
|
||
void iwn_rx_intr(struct iwn_softc *, struct iwn_rx_desc *,
|
||
struct iwn_rx_data *);
|
||
void iwn_rx_statistics(struct iwn_softc *, struct iwn_rx_desc *);
|
||
void iwn_tx_intr(struct iwn_softc *, struct iwn_rx_desc *);
|
||
void iwn_cmd_intr(struct iwn_softc *, struct iwn_rx_desc *);
|
||
static void iwn_bmiss(void *, int);
|
||
void iwn_notif_intr(struct iwn_softc *);
|
||
void iwn_intr(void *);
|
||
void iwn_read_eeprom(struct iwn_softc *);
|
||
static void iwn_read_eeprom_channels(struct iwn_softc *);
|
||
void iwn_print_power_group(struct iwn_softc *, int);
|
||
uint8_t iwn_plcp_signal(int);
|
||
int iwn_tx_data(struct iwn_softc *, struct mbuf *,
|
||
struct ieee80211_node *, struct iwn_tx_ring *);
|
||
void iwn_start(struct ifnet *);
|
||
void iwn_start_locked(struct ifnet *);
|
||
static int iwn_raw_xmit(struct ieee80211_node *, struct mbuf *,
|
||
const struct ieee80211_bpf_params *);
|
||
static void iwn_watchdog(struct iwn_softc *);
|
||
int iwn_ioctl(struct ifnet *, u_long, caddr_t);
|
||
int iwn_cmd(struct iwn_softc *, int, const void *, int, int);
|
||
int iwn_set_link_quality(struct iwn_softc *, uint8_t,
|
||
const struct ieee80211_channel *, int);
|
||
int iwn_set_key(struct ieee80211com *, struct ieee80211_node *,
|
||
const struct ieee80211_key *);
|
||
int iwn_wme_update(struct ieee80211com *);
|
||
void iwn_set_led(struct iwn_softc *, uint8_t, uint8_t, uint8_t);
|
||
int iwn_set_critical_temp(struct iwn_softc *);
|
||
void iwn_enable_tsf(struct iwn_softc *, struct ieee80211_node *);
|
||
void iwn_power_calibration(struct iwn_softc *, int);
|
||
int iwn_set_txpower(struct iwn_softc *,
|
||
struct ieee80211_channel *, int);
|
||
int8_t iwn_get_rssi(struct iwn_softc *, const struct iwn_rx_stat *);
|
||
int iwn_get_noise(const struct iwn_rx_general_stats *);
|
||
int iwn_get_temperature(struct iwn_softc *);
|
||
int iwn_init_sensitivity(struct iwn_softc *);
|
||
void iwn_compute_differential_gain(struct iwn_softc *,
|
||
const struct iwn_rx_general_stats *);
|
||
void iwn_tune_sensitivity(struct iwn_softc *,
|
||
const struct iwn_rx_stats *);
|
||
int iwn_send_sensitivity(struct iwn_softc *);
|
||
int iwn_auth(struct iwn_softc *);
|
||
int iwn_run(struct iwn_softc *);
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int iwn_scan(struct iwn_softc *);
|
||
int iwn_config(struct iwn_softc *);
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void iwn_post_alive(struct iwn_softc *);
|
||
void iwn_stop_master(struct iwn_softc *);
|
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int iwn_reset(struct iwn_softc *);
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||
void iwn_hw_config(struct iwn_softc *);
|
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void iwn_init_locked(struct iwn_softc *);
|
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void iwn_init(void *);
|
||
void iwn_stop_locked(struct iwn_softc *);
|
||
void iwn_stop(struct iwn_softc *);
|
||
static void iwn_scan_start(struct ieee80211com *);
|
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static void iwn_scan_end(struct ieee80211com *);
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static void iwn_set_channel(struct ieee80211com *);
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static void iwn_scan_curchan(struct ieee80211_scan_state *, unsigned long);
|
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static void iwn_scan_mindwell(struct ieee80211_scan_state *);
|
||
static void iwn_ops(void *, int);
|
||
static int iwn_queue_cmd( struct iwn_softc *, int, int, int);
|
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static void iwn_bpfattach(struct iwn_softc *);
|
||
static void iwn_sysctlattach(struct iwn_softc *);
|
||
|
||
#define IWN_DEBUG
|
||
#ifdef IWN_DEBUG
|
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enum {
|
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IWN_DEBUG_XMIT = 0x00000001, /* basic xmit operation */
|
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IWN_DEBUG_RECV = 0x00000002, /* basic recv operation */
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IWN_DEBUG_STATE = 0x00000004, /* 802.11 state transitions */
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IWN_DEBUG_TXPOW = 0x00000008, /* tx power processing */
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IWN_DEBUG_RESET = 0x00000010, /* reset processing */
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IWN_DEBUG_OPS = 0x00000020, /* iwn_ops processing */
|
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IWN_DEBUG_BEACON = 0x00000040, /* beacon handling */
|
||
IWN_DEBUG_WATCHDOG = 0x00000080, /* watchdog timeout */
|
||
IWN_DEBUG_INTR = 0x00000100, /* ISR */
|
||
IWN_DEBUG_CALIBRATE = 0x00000200, /* periodic calibration */
|
||
IWN_DEBUG_NODE = 0x00000400, /* node management */
|
||
IWN_DEBUG_LED = 0x00000800, /* led management */
|
||
IWN_DEBUG_CMD = 0x00001000, /* cmd submission */
|
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IWN_DEBUG_FATAL = 0x80000000, /* fatal errors */
|
||
IWN_DEBUG_ANY = 0xffffffff
|
||
};
|
||
|
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#define DPRINTF(sc, m, fmt, ...) do { \
|
||
if (sc->sc_debug & (m)) \
|
||
printf(fmt, __VA_ARGS__); \
|
||
} while (0)
|
||
|
||
static const char *iwn_ops_str(int);
|
||
static const char *iwn_intr_str(uint8_t);
|
||
#else
|
||
#define DPRINTF(sc, m, fmt, ...) do { (void) sc; } while (0)
|
||
#endif
|
||
|
||
struct iwn_ident {
|
||
uint16_t vendor;
|
||
uint16_t device;
|
||
const char *name;
|
||
};
|
||
|
||
static const struct iwn_ident iwn_ident_table [] = {
|
||
{ 0x8086, 0x4229, "Intel(R) PRO/Wireless 4965BGN" },
|
||
{ 0x8086, 0x422D, "Intel(R) PRO/Wireless 4965BGN" },
|
||
{ 0x8086, 0x4230, "Intel(R) PRO/Wireless 4965BGN" },
|
||
{ 0x8086, 0x4233, "Intel(R) PRO/Wireless 4965BGN" },
|
||
{ 0, 0, NULL }
|
||
};
|
||
|
||
static int
|
||
iwn_probe(device_t dev)
|
||
{
|
||
const struct iwn_ident *ident;
|
||
|
||
for (ident = iwn_ident_table; ident->name != NULL; ident++) {
|
||
if (pci_get_vendor(dev) == ident->vendor &&
|
||
pci_get_device(dev) == ident->device) {
|
||
device_set_desc(dev, ident->name);
|
||
return 0;
|
||
}
|
||
}
|
||
return ENXIO;
|
||
}
|
||
|
||
static int
|
||
iwn_attach(device_t dev)
|
||
{
|
||
struct iwn_softc *sc = (struct iwn_softc *)device_get_softc(dev);
|
||
struct ieee80211com *ic;
|
||
struct ifnet *ifp;
|
||
int i, error, result;
|
||
|
||
sc->sc_dev = dev;
|
||
|
||
/* XXX */
|
||
if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) {
|
||
device_printf(dev, "chip is in D%d power mode "
|
||
"-- setting to D0\n", pci_get_powerstate(dev));
|
||
pci_set_powerstate(dev, PCI_POWERSTATE_D0);
|
||
}
|
||
|
||
/* clear device specific PCI configuration register 0x41 */
|
||
pci_write_config(dev, 0x41, 0, 1);
|
||
|
||
/* enable bus-mastering */
|
||
pci_enable_busmaster(dev);
|
||
|
||
sc->mem_rid= PCIR_BAR(0);
|
||
sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mem_rid,
|
||
RF_ACTIVE);
|
||
if (sc->mem == NULL ) {
|
||
device_printf(dev, "could not allocate memory resources\n");
|
||
error = ENOMEM;
|
||
return error;
|
||
}
|
||
|
||
sc->sc_st = rman_get_bustag(sc->mem);
|
||
sc->sc_sh = rman_get_bushandle(sc->mem);
|
||
sc->irq_rid = 0;
|
||
if ((result = pci_msi_count(dev)) == 1 &&
|
||
pci_alloc_msi(dev, &result) == 0)
|
||
sc->irq_rid = 1;
|
||
sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid,
|
||
RF_ACTIVE | RF_SHAREABLE);
|
||
if (sc->irq == NULL) {
|
||
device_printf(dev, "could not allocate interrupt resource\n");
|
||
error = ENOMEM;
|
||
return error;
|
||
}
|
||
|
||
IWN_LOCK_INIT(sc);
|
||
IWN_CMD_LOCK_INIT(sc);
|
||
callout_init_mtx(&sc->sc_timer_to, &sc->sc_mtx, 0);
|
||
|
||
/*
|
||
* Create the taskqueues used by the driver. Primarily
|
||
* sc_tq handles most the task
|
||
*/
|
||
sc->sc_tq = taskqueue_create("iwn_taskq", M_NOWAIT | M_ZERO,
|
||
taskqueue_thread_enqueue, &sc->sc_tq);
|
||
taskqueue_start_threads(&sc->sc_tq, 1, PI_NET, "%s taskq",
|
||
device_get_nameunit(dev));
|
||
|
||
TASK_INIT(&sc->sc_ops_task, 0, iwn_ops, sc );
|
||
TASK_INIT(&sc->sc_bmiss_task, 0, iwn_bmiss, sc);
|
||
|
||
/*
|
||
* Put adapter into a known state.
|
||
*/
|
||
error = iwn_reset(sc);
|
||
if (error != 0) {
|
||
device_printf(dev,
|
||
"could not reset adapter, error %d\n", error);
|
||
goto fail;
|
||
}
|
||
|
||
/*
|
||
* Allocate DMA memory for firmware transfers.
|
||
*/
|
||
error = iwn_alloc_fwmem(sc);
|
||
if (error != 0) {
|
||
device_printf(dev,
|
||
"could not allocate firmware memory, error %d\n", error);
|
||
goto fail;
|
||
}
|
||
|
||
/*
|
||
* Allocate a "keep warm" page.
|
||
*/
|
||
error = iwn_alloc_kw(sc);
|
||
if (error != 0) {
|
||
device_printf(dev,
|
||
"could not allocate keep-warm page, error %d\n", error);
|
||
goto fail;
|
||
}
|
||
|
||
/*
|
||
* Allocate shared area (communication area).
|
||
*/
|
||
error = iwn_alloc_shared(sc);
|
||
if (error != 0) {
|
||
device_printf(dev,
|
||
"could not allocate shared area, error %d\n", error);
|
||
goto fail;
|
||
}
|
||
|
||
/*
|
||
* Allocate Tx rings.
|
||
*/
|
||
for (i = 0; i < IWN_NTXQUEUES; i++) {
|
||
error = iwn_alloc_tx_ring(sc, &sc->txq[i], i);
|
||
if (error != 0) {
|
||
device_printf(dev,
|
||
"could not allocate Tx ring %d, error %d\n",
|
||
i, error);
|
||
goto fail;
|
||
}
|
||
}
|
||
|
||
error = iwn_alloc_rx_ring(sc, &sc->rxq);
|
||
if (error != 0 ){
|
||
device_printf(dev,
|
||
"could not allocate Rx ring, error %d\n", error);
|
||
goto fail;
|
||
}
|
||
|
||
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_MONITOR /* monitor mode supported */
|
||
| IEEE80211_C_TXPMGT /* tx power management */
|
||
| IEEE80211_C_SHSLOT /* short slot time supported */
|
||
| IEEE80211_C_WPA
|
||
| IEEE80211_C_SHPREAMBLE /* short preamble supported */
|
||
#if 0
|
||
| IEEE80211_C_BGSCAN /* background scanning */
|
||
| IEEE80211_C_IBSS /* ibss/adhoc mode */
|
||
#endif
|
||
| IEEE80211_C_WME /* WME */
|
||
;
|
||
#if 0
|
||
/* XXX disable until HT channel setup works */
|
||
ic->ic_htcaps =
|
||
IEEE80211_HTCAP_SMPS_ENA /* SM PS mode enabled */
|
||
| IEEE80211_HTCAP_CHWIDTH40 /* 40MHz channel width */
|
||
| IEEE80211_HTCAP_SHORTGI20 /* short GI in 20MHz */
|
||
| IEEE80211_HTCAP_SHORTGI40 /* short GI in 40MHz */
|
||
| IEEE80211_HTCAP_RXSTBC_2STREAM/* 1-2 spatial streams */
|
||
| IEEE80211_HTCAP_MAXAMSDU_3839 /* max A-MSDU length */
|
||
/* s/w capabilities */
|
||
| IEEE80211_HTC_HT /* HT operation */
|
||
| IEEE80211_HTC_AMPDU /* tx A-MPDU */
|
||
| IEEE80211_HTC_AMSDU /* tx A-MSDU */
|
||
;
|
||
#endif
|
||
/* read supported channels and MAC address from EEPROM */
|
||
iwn_read_eeprom(sc);
|
||
|
||
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 = iwn_init;
|
||
ifp->if_ioctl = iwn_ioctl;
|
||
ifp->if_start = iwn_start;
|
||
IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN);
|
||
ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN;
|
||
IFQ_SET_READY(&ifp->if_snd);
|
||
|
||
ieee80211_ifattach(ic);
|
||
ic->ic_vap_create = iwn_vap_create;
|
||
ic->ic_vap_delete = iwn_vap_delete;
|
||
ic->ic_raw_xmit = iwn_raw_xmit;
|
||
ic->ic_node_alloc = iwn_node_alloc;
|
||
ic->ic_newassoc = iwn_newassoc;
|
||
ic->ic_wme.wme_update = iwn_wme_update;
|
||
ic->ic_scan_start = iwn_scan_start;
|
||
ic->ic_scan_end = iwn_scan_end;
|
||
ic->ic_set_channel = iwn_set_channel;
|
||
ic->ic_scan_curchan = iwn_scan_curchan;
|
||
ic->ic_scan_mindwell = iwn_scan_mindwell;
|
||
|
||
iwn_bpfattach(sc);
|
||
iwn_sysctlattach(sc);
|
||
|
||
/*
|
||
* Hook our interrupt after all initialization is complete.
|
||
*/
|
||
error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE,
|
||
NULL, iwn_intr, sc, &sc->sc_ih);
|
||
if (error != 0) {
|
||
device_printf(dev, "could not set up interrupt, error %d\n", error);
|
||
goto fail;
|
||
}
|
||
|
||
ieee80211_announce(ic);
|
||
return 0;
|
||
fail:
|
||
iwn_cleanup(dev);
|
||
return error;
|
||
}
|
||
|
||
static int
|
||
iwn_detach(device_t dev)
|
||
{
|
||
iwn_cleanup(dev);
|
||
return 0;
|
||
}
|
||
|
||
/*
|
||
* Cleanup any device resources that were allocated
|
||
*/
|
||
int
|
||
iwn_cleanup(device_t dev)
|
||
{
|
||
struct iwn_softc *sc = device_get_softc(dev);
|
||
struct ifnet *ifp = sc->sc_ifp;
|
||
struct ieee80211com *ic = ifp->if_l2com;
|
||
int i;
|
||
|
||
if (ifp != NULL) {
|
||
iwn_stop(sc);
|
||
callout_drain(&sc->sc_timer_to);
|
||
bpfdetach(ifp);
|
||
ieee80211_ifdetach(ic);
|
||
}
|
||
|
||
iwn_unload_firmware(sc);
|
||
|
||
iwn_free_rx_ring(sc, &sc->rxq);
|
||
for (i = 0; i < IWN_NTXQUEUES; i++)
|
||
iwn_free_tx_ring(sc, &sc->txq[i]);
|
||
iwn_free_kw(sc);
|
||
iwn_free_fwmem(sc);
|
||
if (sc->irq != NULL) {
|
||
bus_teardown_intr(dev, sc->irq, sc->sc_ih);
|
||
bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq);
|
||
if (sc->irq_rid == 1)
|
||
pci_release_msi(dev);
|
||
}
|
||
if (sc->mem != NULL)
|
||
bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem);
|
||
if (ifp != NULL)
|
||
if_free(ifp);
|
||
taskqueue_free(sc->sc_tq);
|
||
IWN_CMD_LOCK_DESTROY(sc);
|
||
IWN_LOCK_DESTROY(sc);
|
||
return 0;
|
||
}
|
||
|
||
static struct ieee80211vap *
|
||
iwn_vap_create(struct ieee80211com *ic,
|
||
const char name[IFNAMSIZ], int unit, int opmode, int flags,
|
||
const uint8_t bssid[IEEE80211_ADDR_LEN],
|
||
const uint8_t mac[IEEE80211_ADDR_LEN])
|
||
{
|
||
struct iwn_vap *ivp;
|
||
struct ieee80211vap *vap;
|
||
|
||
if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */
|
||
return NULL;
|
||
ivp = (struct iwn_vap *) malloc(sizeof(struct iwn_vap),
|
||
M_80211_VAP, M_NOWAIT | M_ZERO);
|
||
if (ivp == NULL)
|
||
return NULL;
|
||
vap = &ivp->iv_vap;
|
||
ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac);
|
||
vap->iv_bmissthreshold = 10; /* override default */
|
||
/* override with driver methods */
|
||
ivp->iv_newstate = vap->iv_newstate;
|
||
vap->iv_newstate = iwn_newstate;
|
||
|
||
ieee80211_amrr_init(&ivp->iv_amrr, vap,
|
||
IEEE80211_AMRR_MIN_SUCCESS_THRESHOLD,
|
||
IEEE80211_AMRR_MAX_SUCCESS_THRESHOLD,
|
||
500 /*ms*/);
|
||
|
||
/* complete setup */
|
||
ieee80211_vap_attach(vap, ieee80211_media_change, ieee80211_media_status);
|
||
ic->ic_opmode = opmode;
|
||
return vap;
|
||
}
|
||
|
||
static void
|
||
iwn_vap_delete(struct ieee80211vap *vap)
|
||
{
|
||
struct iwn_vap *ivp = IWN_VAP(vap);
|
||
|
||
ieee80211_amrr_cleanup(&ivp->iv_amrr);
|
||
ieee80211_vap_detach(vap);
|
||
free(ivp, M_80211_VAP);
|
||
}
|
||
|
||
static int
|
||
iwn_shutdown(device_t dev)
|
||
{
|
||
struct iwn_softc *sc = device_get_softc(dev);
|
||
|
||
iwn_stop(sc);
|
||
return 0;
|
||
}
|
||
|
||
static int
|
||
iwn_suspend(device_t dev)
|
||
{
|
||
struct iwn_softc *sc = device_get_softc(dev);
|
||
|
||
iwn_stop(sc);
|
||
return 0;
|
||
}
|
||
|
||
static int
|
||
iwn_resume(device_t dev)
|
||
{
|
||
struct iwn_softc *sc = device_get_softc(dev);
|
||
struct ifnet *ifp = sc->sc_ifp;
|
||
|
||
pci_write_config(dev, 0x41, 0, 1);
|
||
|
||
if (ifp->if_flags & IFF_UP)
|
||
iwn_init(sc);
|
||
return 0;
|
||
}
|
||
|
||
static void
|
||
iwn_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
|
||
{
|
||
if (error != 0)
|
||
return;
|
||
KASSERT(nsegs == 1, ("too many DMA segments, %d should be 1", nsegs));
|
||
*(bus_addr_t *)arg = segs[0].ds_addr;
|
||
}
|
||
|
||
static int
|
||
iwn_dma_contig_alloc(struct iwn_softc *sc, struct iwn_dma_info *dma,
|
||
void **kvap, bus_size_t size, bus_size_t alignment, int flags)
|
||
{
|
||
int error, lalignment, i;
|
||
|
||
/*
|
||
* FreeBSD can't guarrenty 16k alignment at the moment (11/2007) so
|
||
* we allocate an extra 12k with 4k alignement and walk through
|
||
* it trying to find where the alignment is. It's a nasty fix for
|
||
* a bigger problem.
|
||
*/
|
||
DPRINTF(sc, IWN_DEBUG_RESET,
|
||
"Size: %zd - alignment %zd\n", size, alignment);
|
||
if (alignment == 0x4000) {
|
||
size += 12*1024;
|
||
lalignment = 4096;
|
||
DPRINTF(sc, IWN_DEBUG_RESET, "%s\n",
|
||
"Attempting to find a 16k boundary");
|
||
} else
|
||
lalignment = alignment;
|
||
dma->size = size;
|
||
dma->tag = NULL;
|
||
|
||
error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), lalignment,
|
||
0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, size,
|
||
1, size, flags, NULL, NULL, &dma->tag);
|
||
if (error != 0) {
|
||
device_printf(sc->sc_dev,
|
||
"%s: bus_dma_tag_create failed, error %d\n",
|
||
__func__, error);
|
||
goto fail;
|
||
}
|
||
error = bus_dmamem_alloc(dma->tag, (void **)&dma->vaddr,
|
||
flags | BUS_DMA_ZERO, &dma->map);
|
||
if (error != 0) {
|
||
device_printf(sc->sc_dev,
|
||
"%s: bus_dmamem_alloc failed, error %d\n",
|
||
__func__, error);
|
||
goto fail;
|
||
}
|
||
if (alignment == 0x4000) {
|
||
for (i = 0; i < 3 && (((uintptr_t)dma->vaddr) & 0x3fff); i++) {
|
||
DPRINTF(sc, IWN_DEBUG_RESET, "%s\n",
|
||
"Memory Unaligned, shifting pointer by 4k");
|
||
dma->vaddr += 4096;
|
||
size -= 4096;
|
||
}
|
||
if ((((uintptr_t)dma->vaddr ) & (alignment-1))) {
|
||
DPRINTF(sc, IWN_DEBUG_ANY,
|
||
"%s: failed to align memory, vaddr %p, align %zd\n",
|
||
__func__, dma->vaddr, alignment);
|
||
error = ENOMEM;
|
||
goto fail;
|
||
}
|
||
}
|
||
|
||
error = bus_dmamap_load(dma->tag, dma->map, dma->vaddr,
|
||
size, iwn_dma_map_addr, &dma->paddr, flags);
|
||
if (error != 0) {
|
||
device_printf(sc->sc_dev,
|
||
"%s: bus_dmamap_load failed, error %d\n", __func__, error);
|
||
goto fail;
|
||
}
|
||
|
||
if (kvap != NULL)
|
||
*kvap = dma->vaddr;
|
||
return 0;
|
||
fail:
|
||
iwn_dma_contig_free(dma);
|
||
return error;
|
||
}
|
||
|
||
static void
|
||
iwn_dma_contig_free(struct iwn_dma_info *dma)
|
||
{
|
||
if (dma->tag != NULL) {
|
||
if (dma->map != NULL) {
|
||
if (dma->paddr == 0) {
|
||
bus_dmamap_sync(dma->tag, dma->map,
|
||
BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE);
|
||
bus_dmamap_unload(dma->tag, dma->map);
|
||
}
|
||
bus_dmamem_free(dma->tag, &dma->vaddr, dma->map);
|
||
}
|
||
bus_dma_tag_destroy(dma->tag);
|
||
}
|
||
}
|
||
|
||
int
|
||
iwn_alloc_shared(struct iwn_softc *sc)
|
||
{
|
||
/* must be aligned on a 1KB boundary */
|
||
return iwn_dma_contig_alloc(sc, &sc->shared_dma,
|
||
(void **)&sc->shared, sizeof (struct iwn_shared), 1024,
|
||
BUS_DMA_NOWAIT);
|
||
}
|
||
|
||
void
|
||
iwn_free_shared(struct iwn_softc *sc)
|
||
{
|
||
iwn_dma_contig_free(&sc->shared_dma);
|
||
}
|
||
|
||
int
|
||
iwn_alloc_kw(struct iwn_softc *sc)
|
||
{
|
||
/* must be aligned on a 4k boundary */
|
||
return iwn_dma_contig_alloc(sc, &sc->kw_dma, NULL,
|
||
PAGE_SIZE, PAGE_SIZE, BUS_DMA_NOWAIT);
|
||
}
|
||
|
||
void
|
||
iwn_free_kw(struct iwn_softc *sc)
|
||
{
|
||
iwn_dma_contig_free(&sc->kw_dma);
|
||
}
|
||
|
||
int
|
||
iwn_alloc_fwmem(struct iwn_softc *sc)
|
||
{
|
||
/* allocate enough contiguous space to store text and data */
|
||
return iwn_dma_contig_alloc(sc, &sc->fw_dma, NULL,
|
||
IWN_FW_MAIN_TEXT_MAXSZ + IWN_FW_MAIN_DATA_MAXSZ, 16,
|
||
BUS_DMA_NOWAIT);
|
||
}
|
||
|
||
void
|
||
iwn_free_fwmem(struct iwn_softc *sc)
|
||
{
|
||
iwn_dma_contig_free(&sc->fw_dma);
|
||
}
|
||
|
||
int
|
||
iwn_alloc_rx_ring(struct iwn_softc *sc, struct iwn_rx_ring *ring)
|
||
{
|
||
int i, error;
|
||
|
||
ring->cur = 0;
|
||
|
||
error = iwn_dma_contig_alloc(sc, &ring->desc_dma,
|
||
(void **)&ring->desc, IWN_RX_RING_COUNT * sizeof (uint32_t),
|
||
IWN_RING_DMA_ALIGN, BUS_DMA_NOWAIT);
|
||
if (error != 0) {
|
||
device_printf(sc->sc_dev,
|
||
"%s: could not allocate rx ring DMA memory, error %d\n",
|
||
__func__, error);
|
||
goto fail;
|
||
}
|
||
|
||
error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
|
||
BUS_SPACE_MAXADDR_32BIT,
|
||
BUS_SPACE_MAXADDR, NULL, NULL, MJUMPAGESIZE, 1,
|
||
MJUMPAGESIZE, BUS_DMA_NOWAIT, NULL, NULL, &ring->data_dmat);
|
||
if (error != 0) {
|
||
device_printf(sc->sc_dev,
|
||
"%s: bus_dma_tag_create_failed, error %d\n",
|
||
__func__, error);
|
||
goto fail;
|
||
}
|
||
|
||
/*
|
||
* Setup Rx buffers.
|
||
*/
|
||
for (i = 0; i < IWN_RX_RING_COUNT; i++) {
|
||
struct iwn_rx_data *data = &ring->data[i];
|
||
struct mbuf *m;
|
||
bus_addr_t paddr;
|
||
|
||
error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
|
||
if (error != 0) {
|
||
device_printf(sc->sc_dev,
|
||
"%s: bus_dmamap_create failed, error %d\n",
|
||
__func__, error);
|
||
goto fail;
|
||
}
|
||
m = m_getjcl(M_DONTWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE);
|
||
if (m == NULL) {
|
||
device_printf(sc->sc_dev,
|
||
"%s: could not allocate rx mbuf\n", __func__);
|
||
error = ENOMEM;
|
||
goto fail;
|
||
}
|
||
/* map page */
|
||
error = bus_dmamap_load(ring->data_dmat, data->map,
|
||
mtod(m, caddr_t), MJUMPAGESIZE,
|
||
iwn_dma_map_addr, &paddr, BUS_DMA_NOWAIT);
|
||
if (error != 0 && error != EFBIG) {
|
||
device_printf(sc->sc_dev,
|
||
"%s: bus_dmamap_load failed, error %d\n",
|
||
__func__, error);
|
||
m_freem(m);
|
||
error = ENOMEM; /* XXX unique code */
|
||
goto fail;
|
||
}
|
||
bus_dmamap_sync(ring->data_dmat, data->map,
|
||
BUS_DMASYNC_PREWRITE);
|
||
|
||
data->m = m;
|
||
/* Rx buffers are aligned on a 256-byte boundary */
|
||
ring->desc[i] = htole32(paddr >> 8);
|
||
}
|
||
bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
|
||
BUS_DMASYNC_PREWRITE);
|
||
return 0;
|
||
fail:
|
||
iwn_free_rx_ring(sc, ring);
|
||
return error;
|
||
}
|
||
|
||
void
|
||
iwn_reset_rx_ring(struct iwn_softc *sc, struct iwn_rx_ring *ring)
|
||
{
|
||
int ntries;
|
||
|
||
iwn_mem_lock(sc);
|
||
|
||
IWN_WRITE(sc, IWN_RX_CONFIG, 0);
|
||
for (ntries = 0; ntries < 100; ntries++) {
|
||
if (IWN_READ(sc, IWN_RX_STATUS) & IWN_RX_IDLE)
|
||
break;
|
||
DELAY(10);
|
||
}
|
||
#ifdef IWN_DEBUG
|
||
if (ntries == 100)
|
||
DPRINTF(sc, IWN_DEBUG_ANY, "%s\n", "timeout resetting Rx ring");
|
||
#endif
|
||
iwn_mem_unlock(sc);
|
||
|
||
ring->cur = 0;
|
||
}
|
||
|
||
void
|
||
iwn_free_rx_ring(struct iwn_softc *sc, struct iwn_rx_ring *ring)
|
||
{
|
||
int i;
|
||
|
||
iwn_dma_contig_free(&ring->desc_dma);
|
||
|
||
for (i = 0; i < IWN_RX_RING_COUNT; i++)
|
||
if (ring->data[i].m != NULL)
|
||
m_freem(ring->data[i].m);
|
||
}
|
||
|
||
int
|
||
iwn_alloc_tx_ring(struct iwn_softc *sc, struct iwn_tx_ring *ring, int qid)
|
||
{
|
||
bus_size_t size;
|
||
int i, error;
|
||
|
||
ring->qid = qid;
|
||
ring->queued = 0;
|
||
ring->cur = 0;
|
||
|
||
size = IWN_TX_RING_COUNT * sizeof(struct iwn_tx_desc);
|
||
error = iwn_dma_contig_alloc(sc, &ring->desc_dma,
|
||
(void **)&ring->desc, size, IWN_RING_DMA_ALIGN, BUS_DMA_NOWAIT);
|
||
if (error != 0) {
|
||
device_printf(sc->sc_dev,
|
||
"%s: could not allocate tx ring DMA memory, error %d\n",
|
||
__func__, error);
|
||
goto fail;
|
||
}
|
||
|
||
size = IWN_TX_RING_COUNT * sizeof(struct iwn_tx_cmd);
|
||
error = iwn_dma_contig_alloc(sc, &ring->cmd_dma,
|
||
(void **)&ring->cmd, size, 4, BUS_DMA_NOWAIT);
|
||
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, IWN_MAX_SCATTER - 1,
|
||
MCLBYTES, BUS_DMA_NOWAIT, NULL, NULL, &ring->data_dmat);
|
||
if (error != 0) {
|
||
device_printf(sc->sc_dev,
|
||
"%s: bus_dma_tag_create_failed, error %d\n",
|
||
__func__, error);
|
||
goto fail;
|
||
}
|
||
|
||
for (i = 0; i < IWN_TX_RING_COUNT; i++) {
|
||
struct iwn_tx_data *data = &ring->data[i];
|
||
|
||
error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
|
||
if (error != 0) {
|
||
device_printf(sc->sc_dev,
|
||
"%s: bus_dmamap_create failed, error %d\n",
|
||
__func__, error);
|
||
goto fail;
|
||
}
|
||
bus_dmamap_sync(ring->data_dmat, data->map,
|
||
BUS_DMASYNC_PREWRITE);
|
||
}
|
||
return 0;
|
||
fail:
|
||
iwn_free_tx_ring(sc, ring);
|
||
return error;
|
||
}
|
||
|
||
void
|
||
iwn_reset_tx_ring(struct iwn_softc *sc, struct iwn_tx_ring *ring)
|
||
{
|
||
uint32_t tmp;
|
||
int i, ntries;
|
||
|
||
iwn_mem_lock(sc);
|
||
|
||
IWN_WRITE(sc, IWN_TX_CONFIG(ring->qid), 0);
|
||
for (ntries = 0; ntries < 20; ntries++) {
|
||
tmp = IWN_READ(sc, IWN_TX_STATUS);
|
||
if ((tmp & IWN_TX_IDLE(ring->qid)) == IWN_TX_IDLE(ring->qid))
|
||
break;
|
||
DELAY(10);
|
||
}
|
||
#ifdef IWN_DEBUG
|
||
if (ntries == 20)
|
||
DPRINTF(sc, IWN_DEBUG_RESET,
|
||
"%s: timeout resetting Tx ring %d\n", __func__, ring->qid);
|
||
#endif
|
||
iwn_mem_unlock(sc);
|
||
|
||
for (i = 0; i < IWN_TX_RING_COUNT; i++) {
|
||
struct iwn_tx_data *data = &ring->data[i];
|
||
|
||
if (data->m != NULL) {
|
||
bus_dmamap_unload(ring->data_dmat, data->map);
|
||
m_freem(data->m);
|
||
data->m = NULL;
|
||
}
|
||
}
|
||
|
||
ring->queued = 0;
|
||
ring->cur = 0;
|
||
}
|
||
|
||
void
|
||
iwn_free_tx_ring(struct iwn_softc *sc, struct iwn_tx_ring *ring)
|
||
{
|
||
int i;
|
||
|
||
iwn_dma_contig_free(&ring->desc_dma);
|
||
iwn_dma_contig_free(&ring->cmd_dma);
|
||
|
||
if (ring->data != NULL) {
|
||
for (i = 0; i < IWN_TX_RING_COUNT; i++) {
|
||
struct iwn_tx_data *data = &ring->data[i];
|
||
|
||
if (data->m != NULL) {
|
||
bus_dmamap_unload(ring->data_dmat, data->map);
|
||
m_freem(data->m);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
struct ieee80211_node *
|
||
iwn_node_alloc(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN])
|
||
{
|
||
return malloc(sizeof (struct iwn_node), M_80211_NODE,M_NOWAIT | M_ZERO);
|
||
}
|
||
|
||
void
|
||
iwn_newassoc(struct ieee80211_node *ni, int isnew)
|
||
{
|
||
struct ieee80211vap *vap = ni->ni_vap;
|
||
|
||
ieee80211_amrr_node_init(&IWN_VAP(vap)->iv_amrr,
|
||
&IWN_NODE(ni)->amn, ni);
|
||
}
|
||
|
||
int
|
||
iwn_media_change(struct ifnet *ifp)
|
||
{
|
||
int error = ieee80211_media_change(ifp);
|
||
/* NB: only the fixed rate can change and that doesn't need a reset */
|
||
return (error == ENETRESET ? 0 : error);
|
||
}
|
||
|
||
int
|
||
iwn_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
|
||
{
|
||
struct iwn_vap *ivp = IWN_VAP(vap);
|
||
struct ieee80211com *ic = vap->iv_ic;
|
||
struct iwn_softc *sc = ic->ic_ifp->if_softc;
|
||
int error;
|
||
|
||
DPRINTF(sc, IWN_DEBUG_STATE, "%s: %s -> %s\n", __func__,
|
||
ieee80211_state_name[vap->iv_state],
|
||
ieee80211_state_name[nstate]);
|
||
|
||
IWN_LOCK(sc);
|
||
callout_stop(&sc->sc_timer_to);
|
||
IWN_UNLOCK(sc);
|
||
|
||
/*
|
||
* Some state transitions require issuing a configure request
|
||
* to the adapter. This must be done in a blocking context
|
||
* so we toss control to the task q thread where the state
|
||
* change will be finished after the command completes.
|
||
*/
|
||
if (nstate == IEEE80211_S_AUTH && vap->iv_state != IEEE80211_S_AUTH) {
|
||
/* !AUTH -> AUTH requires adapter config */
|
||
error = iwn_queue_cmd(sc, IWN_AUTH, arg, IWN_QUEUE_NORMAL);
|
||
return (error != 0 ? error : EINPROGRESS);
|
||
}
|
||
if (nstate == IEEE80211_S_RUN && vap->iv_state != IEEE80211_S_RUN) {
|
||
/*
|
||
* !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.
|
||
*/
|
||
error = iwn_queue_cmd(sc, IWN_RUN, arg, IWN_QUEUE_NORMAL);
|
||
return (error != 0 ? error : EINPROGRESS);
|
||
}
|
||
if (nstate == IEEE80211_S_RUN) {
|
||
/*
|
||
* RUN -> RUN transition; just restart the timers.
|
||
*/
|
||
iwn_calib_reset(sc);
|
||
}
|
||
return ivp->iv_newstate(vap, nstate, arg);
|
||
}
|
||
|
||
/*
|
||
* Grab exclusive access to NIC memory.
|
||
*/
|
||
void
|
||
iwn_mem_lock(struct iwn_softc *sc)
|
||
{
|
||
uint32_t tmp;
|
||
int ntries;
|
||
|
||
tmp = IWN_READ(sc, IWN_GPIO_CTL);
|
||
IWN_WRITE(sc, IWN_GPIO_CTL, tmp | IWN_GPIO_MAC);
|
||
|
||
/* spin until we actually get the lock */
|
||
for (ntries = 0; ntries < 1000; ntries++) {
|
||
if ((IWN_READ(sc, IWN_GPIO_CTL) &
|
||
(IWN_GPIO_CLOCK | IWN_GPIO_SLEEP)) == IWN_GPIO_CLOCK)
|
||
break;
|
||
DELAY(10);
|
||
}
|
||
if (ntries == 1000)
|
||
device_printf(sc->sc_dev,
|
||
"%s: could not lock memory\n", __func__);
|
||
}
|
||
|
||
/*
|
||
* Release lock on NIC memory.
|
||
*/
|
||
void
|
||
iwn_mem_unlock(struct iwn_softc *sc)
|
||
{
|
||
uint32_t tmp = IWN_READ(sc, IWN_GPIO_CTL);
|
||
IWN_WRITE(sc, IWN_GPIO_CTL, tmp & ~IWN_GPIO_MAC);
|
||
}
|
||
|
||
uint32_t
|
||
iwn_mem_read(struct iwn_softc *sc, uint32_t addr)
|
||
{
|
||
IWN_WRITE(sc, IWN_READ_MEM_ADDR, IWN_MEM_4 | addr);
|
||
return IWN_READ(sc, IWN_READ_MEM_DATA);
|
||
}
|
||
|
||
void
|
||
iwn_mem_write(struct iwn_softc *sc, uint32_t addr, uint32_t data)
|
||
{
|
||
IWN_WRITE(sc, IWN_WRITE_MEM_ADDR, IWN_MEM_4 | addr);
|
||
IWN_WRITE(sc, IWN_WRITE_MEM_DATA, data);
|
||
}
|
||
|
||
void
|
||
iwn_mem_write_region_4(struct iwn_softc *sc, uint32_t addr,
|
||
const uint32_t *data, int wlen)
|
||
{
|
||
for (; wlen > 0; wlen--, data++, addr += 4)
|
||
iwn_mem_write(sc, addr, *data);
|
||
}
|
||
|
||
int
|
||
iwn_eeprom_lock(struct iwn_softc *sc)
|
||
{
|
||
uint32_t tmp;
|
||
int ntries;
|
||
|
||
tmp = IWN_READ(sc, IWN_HWCONFIG);
|
||
IWN_WRITE(sc, IWN_HWCONFIG, tmp | IWN_HW_EEPROM_LOCKED);
|
||
|
||
/* spin until we actually get the lock */
|
||
for (ntries = 0; ntries < 100; ntries++) {
|
||
if (IWN_READ(sc, IWN_HWCONFIG) & IWN_HW_EEPROM_LOCKED)
|
||
return 0;
|
||
DELAY(10);
|
||
}
|
||
return ETIMEDOUT;
|
||
}
|
||
|
||
void
|
||
iwn_eeprom_unlock(struct iwn_softc *sc)
|
||
{
|
||
uint32_t tmp = IWN_READ(sc, IWN_HWCONFIG);
|
||
IWN_WRITE(sc, IWN_HWCONFIG, tmp & ~IWN_HW_EEPROM_LOCKED);
|
||
}
|
||
|
||
/*
|
||
* Read `len' bytes from the EEPROM. We access the EEPROM through the MAC
|
||
* instead of using the traditional bit-bang method.
|
||
*/
|
||
int
|
||
iwn_read_prom_data(struct iwn_softc *sc, uint32_t addr, void *data, int len)
|
||
{
|
||
uint8_t *out = data;
|
||
uint32_t val;
|
||
int ntries, tmp;
|
||
|
||
iwn_mem_lock(sc);
|
||
for (; len > 0; len -= 2, addr++) {
|
||
IWN_WRITE(sc, IWN_EEPROM_CTL, addr << 2);
|
||
tmp = IWN_READ(sc, IWN_EEPROM_CTL);
|
||
IWN_WRITE(sc, IWN_EEPROM_CTL, tmp & ~IWN_EEPROM_MSK );
|
||
|
||
for (ntries = 0; ntries < 10; ntries++) {
|
||
if ((val = IWN_READ(sc, IWN_EEPROM_CTL)) &
|
||
IWN_EEPROM_READY)
|
||
break;
|
||
DELAY(5);
|
||
}
|
||
if (ntries == 10) {
|
||
device_printf(sc->sc_dev,"could not read EEPROM\n");
|
||
return ETIMEDOUT;
|
||
}
|
||
*out++ = val >> 16;
|
||
if (len > 1)
|
||
*out++ = val >> 24;
|
||
}
|
||
iwn_mem_unlock(sc);
|
||
|
||
return 0;
|
||
}
|
||
|
||
/*
|
||
* The firmware boot code is small and is intended to be copied directly into
|
||
* the NIC internal memory.
|
||
*/
|
||
int
|
||
iwn_transfer_microcode(struct iwn_softc *sc, const uint8_t *ucode, int size)
|
||
{
|
||
int ntries;
|
||
|
||
size /= sizeof (uint32_t);
|
||
|
||
iwn_mem_lock(sc);
|
||
|
||
/* copy microcode image into NIC memory */
|
||
iwn_mem_write_region_4(sc, IWN_MEM_UCODE_BASE,
|
||
(const uint32_t *)ucode, size);
|
||
|
||
iwn_mem_write(sc, IWN_MEM_UCODE_SRC, 0);
|
||
iwn_mem_write(sc, IWN_MEM_UCODE_DST, IWN_FW_TEXT);
|
||
iwn_mem_write(sc, IWN_MEM_UCODE_SIZE, size);
|
||
|
||
/* run microcode */
|
||
iwn_mem_write(sc, IWN_MEM_UCODE_CTL, IWN_UC_RUN);
|
||
|
||
/* wait for transfer to complete */
|
||
for (ntries = 0; ntries < 1000; ntries++) {
|
||
if (!(iwn_mem_read(sc, IWN_MEM_UCODE_CTL) & IWN_UC_RUN))
|
||
break;
|
||
DELAY(10);
|
||
}
|
||
if (ntries == 1000) {
|
||
iwn_mem_unlock(sc);
|
||
device_printf(sc->sc_dev,
|
||
"%s: could not load boot firmware\n", __func__);
|
||
return ETIMEDOUT;
|
||
}
|
||
iwn_mem_write(sc, IWN_MEM_UCODE_CTL, IWN_UC_ENABLE);
|
||
|
||
iwn_mem_unlock(sc);
|
||
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
iwn_load_firmware(struct iwn_softc *sc)
|
||
{
|
||
int error;
|
||
|
||
KASSERT(sc->fw_fp == NULL, ("firmware already loaded"));
|
||
|
||
IWN_UNLOCK(sc);
|
||
/* load firmware image from disk */
|
||
sc->fw_fp = firmware_get("iwnfw");
|
||
if (sc->fw_fp == NULL) {
|
||
device_printf(sc->sc_dev,
|
||
"%s: could not load firmare image \"iwnfw\"\n", __func__);
|
||
error = EINVAL;
|
||
} else
|
||
error = 0;
|
||
IWN_LOCK(sc);
|
||
return error;
|
||
}
|
||
|
||
int
|
||
iwn_transfer_firmware(struct iwn_softc *sc)
|
||
{
|
||
struct iwn_dma_info *dma = &sc->fw_dma;
|
||
const struct iwn_firmware_hdr *hdr;
|
||
const uint8_t *init_text, *init_data, *main_text, *main_data;
|
||
const uint8_t *boot_text;
|
||
uint32_t init_textsz, init_datasz, main_textsz, main_datasz;
|
||
uint32_t boot_textsz;
|
||
int error = 0;
|
||
const struct firmware *fp = sc->fw_fp;
|
||
|
||
/* extract firmware header information */
|
||
if (fp->datasize < sizeof (struct iwn_firmware_hdr)) {
|
||
device_printf(sc->sc_dev,
|
||
"%s: truncated firmware header: %zu bytes, expecting %zu\n",
|
||
__func__, fp->datasize, sizeof (struct iwn_firmware_hdr));
|
||
error = EINVAL;
|
||
goto fail;
|
||
}
|
||
hdr = (const struct iwn_firmware_hdr *)fp->data;
|
||
main_textsz = le32toh(hdr->main_textsz);
|
||
main_datasz = le32toh(hdr->main_datasz);
|
||
init_textsz = le32toh(hdr->init_textsz);
|
||
init_datasz = le32toh(hdr->init_datasz);
|
||
boot_textsz = le32toh(hdr->boot_textsz);
|
||
|
||
/* sanity-check firmware segments sizes */
|
||
if (main_textsz > IWN_FW_MAIN_TEXT_MAXSZ ||
|
||
main_datasz > IWN_FW_MAIN_DATA_MAXSZ ||
|
||
init_textsz > IWN_FW_INIT_TEXT_MAXSZ ||
|
||
init_datasz > IWN_FW_INIT_DATA_MAXSZ ||
|
||
boot_textsz > IWN_FW_BOOT_TEXT_MAXSZ ||
|
||
(boot_textsz & 3) != 0) {
|
||
device_printf(sc->sc_dev,
|
||
"%s: invalid firmware header, main [%d,%d], init [%d,%d] "
|
||
"boot %d\n", __func__, main_textsz, main_datasz,
|
||
init_textsz, init_datasz, boot_textsz);
|
||
error = EINVAL;
|
||
goto fail;
|
||
}
|
||
|
||
/* check that all firmware segments are present */
|
||
if (fp->datasize < sizeof (struct iwn_firmware_hdr) + main_textsz +
|
||
main_datasz + init_textsz + init_datasz + boot_textsz) {
|
||
device_printf(sc->sc_dev, "%s: firmware file too short: "
|
||
"%zu bytes, main [%d, %d], init [%d,%d] boot %d\n",
|
||
__func__, fp->datasize, main_textsz, main_datasz,
|
||
init_textsz, init_datasz, boot_textsz);
|
||
error = EINVAL;
|
||
goto fail;
|
||
}
|
||
|
||
/* get pointers to firmware segments */
|
||
main_text = (const uint8_t *)(hdr + 1);
|
||
main_data = main_text + main_textsz;
|
||
init_text = main_data + main_datasz;
|
||
init_data = init_text + init_textsz;
|
||
boot_text = init_data + init_datasz;
|
||
|
||
/* copy initialization images into pre-allocated DMA-safe memory */
|
||
memcpy(dma->vaddr, init_data, init_datasz);
|
||
memcpy(dma->vaddr + IWN_FW_INIT_DATA_MAXSZ, init_text, init_textsz);
|
||
|
||
/* tell adapter where to find initialization images */
|
||
iwn_mem_lock(sc);
|
||
iwn_mem_write(sc, IWN_MEM_DATA_BASE, dma->paddr >> 4);
|
||
iwn_mem_write(sc, IWN_MEM_DATA_SIZE, init_datasz);
|
||
iwn_mem_write(sc, IWN_MEM_TEXT_BASE,
|
||
(dma->paddr + IWN_FW_INIT_DATA_MAXSZ) >> 4);
|
||
iwn_mem_write(sc, IWN_MEM_TEXT_SIZE, init_textsz);
|
||
iwn_mem_unlock(sc);
|
||
|
||
/* load firmware boot code */
|
||
error = iwn_transfer_microcode(sc, boot_text, boot_textsz);
|
||
if (error != 0) {
|
||
device_printf(sc->sc_dev,
|
||
"%s: could not load boot firmware, error %d\n",
|
||
__func__, error);
|
||
goto fail;
|
||
}
|
||
|
||
/* now press "execute" ;-) */
|
||
IWN_WRITE(sc, IWN_RESET, 0);
|
||
|
||
/* wait at most one second for first alive notification */
|
||
error = msleep(sc, &sc->sc_mtx, PCATCH, "iwninit", hz);
|
||
if (error != 0) {
|
||
/* this isn't what was supposed to happen.. */
|
||
device_printf(sc->sc_dev,
|
||
"%s: timeout waiting for first alive notice, error %d\n",
|
||
__func__, error);
|
||
goto fail;
|
||
}
|
||
|
||
/* copy runtime images into pre-allocated DMA-safe memory */
|
||
memcpy(dma->vaddr, main_data, main_datasz);
|
||
memcpy(dma->vaddr + IWN_FW_MAIN_DATA_MAXSZ, main_text, main_textsz);
|
||
|
||
/* tell adapter where to find runtime images */
|
||
iwn_mem_lock(sc);
|
||
iwn_mem_write(sc, IWN_MEM_DATA_BASE, dma->paddr >> 4);
|
||
iwn_mem_write(sc, IWN_MEM_DATA_SIZE, main_datasz);
|
||
iwn_mem_write(sc, IWN_MEM_TEXT_BASE,
|
||
(dma->paddr + IWN_FW_MAIN_DATA_MAXSZ) >> 4);
|
||
iwn_mem_write(sc, IWN_MEM_TEXT_SIZE, IWN_FW_UPDATED | main_textsz);
|
||
iwn_mem_unlock(sc);
|
||
|
||
/* wait at most one second for second alive notification */
|
||
error = msleep(sc, &sc->sc_mtx, PCATCH, "iwninit", hz);
|
||
if (error != 0) {
|
||
/* this isn't what was supposed to happen.. */
|
||
device_printf(sc->sc_dev,
|
||
"%s: timeout waiting for second alive notice, error %d\n",
|
||
__func__, error);
|
||
goto fail;
|
||
}
|
||
return 0;
|
||
fail:
|
||
return error;
|
||
}
|
||
|
||
void
|
||
iwn_unload_firmware(struct iwn_softc *sc)
|
||
{
|
||
if (sc->fw_fp != NULL) {
|
||
firmware_put(sc->fw_fp, FIRMWARE_UNLOAD);
|
||
sc->fw_fp = NULL;
|
||
}
|
||
}
|
||
|
||
static void
|
||
iwn_timer_timeout(void *arg)
|
||
{
|
||
struct iwn_softc *sc = arg;
|
||
|
||
IWN_LOCK_ASSERT(sc);
|
||
|
||
if (sc->calib_cnt && --sc->calib_cnt == 0) {
|
||
DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s\n",
|
||
"send statistics request");
|
||
(void) iwn_cmd(sc, IWN_CMD_GET_STATISTICS, NULL, 0, 1);
|
||
sc->calib_cnt = 60; /* do calibration every 60s */
|
||
}
|
||
iwn_watchdog(sc); /* NB: piggyback tx watchdog */
|
||
callout_reset(&sc->sc_timer_to, hz, iwn_timer_timeout, sc);
|
||
}
|
||
|
||
static void
|
||
iwn_calib_reset(struct iwn_softc *sc)
|
||
{
|
||
callout_reset(&sc->sc_timer_to, hz, iwn_timer_timeout, sc);
|
||
sc->calib_cnt = 60; /* do calibration every 60s */
|
||
}
|
||
|
||
void
|
||
iwn_ampdu_rx_start(struct iwn_softc *sc, struct iwn_rx_desc *desc)
|
||
{
|
||
struct iwn_rx_stat *stat;
|
||
|
||
DPRINTF(sc, IWN_DEBUG_RECV, "%s\n", "received AMPDU stats");
|
||
/* save Rx statistics, they will be used on IWN_AMPDU_RX_DONE */
|
||
stat = (struct iwn_rx_stat *)(desc + 1);
|
||
memcpy(&sc->last_rx_stat, stat, sizeof (*stat));
|
||
sc->last_rx_valid = 1;
|
||
}
|
||
|
||
static __inline int
|
||
maprate(int iwnrate)
|
||
{
|
||
switch (iwnrate) {
|
||
/* CCK rates */
|
||
case 10: return 2;
|
||
case 20: return 4;
|
||
case 55: return 11;
|
||
case 110: return 22;
|
||
/* OFDM rates */
|
||
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;
|
||
/* XXX MCS */
|
||
}
|
||
/* unknown rate: should not happen */
|
||
return 0;
|
||
}
|
||
|
||
void
|
||
iwn_rx_intr(struct iwn_softc *sc, struct iwn_rx_desc *desc,
|
||
struct iwn_rx_data *data)
|
||
{
|
||
struct ifnet *ifp = sc->sc_ifp;
|
||
struct ieee80211com *ic = ifp->if_l2com;
|
||
struct iwn_rx_ring *ring = &sc->rxq;
|
||
struct ieee80211_frame *wh;
|
||
struct ieee80211_node *ni;
|
||
struct mbuf *m, *mnew;
|
||
struct iwn_rx_stat *stat;
|
||
caddr_t head;
|
||
uint32_t *tail;
|
||
int8_t rssi, nf;
|
||
int len, error;
|
||
bus_addr_t paddr;
|
||
|
||
if (desc->type == IWN_AMPDU_RX_DONE) {
|
||
/* check for prior AMPDU_RX_START */
|
||
if (!sc->last_rx_valid) {
|
||
DPRINTF(sc, IWN_DEBUG_ANY,
|
||
"%s: missing AMPDU_RX_START\n", __func__);
|
||
ifp->if_ierrors++;
|
||
return;
|
||
}
|
||
sc->last_rx_valid = 0;
|
||
stat = &sc->last_rx_stat;
|
||
} else
|
||
stat = (struct iwn_rx_stat *)(desc + 1);
|
||
|
||
if (stat->cfg_phy_len > IWN_STAT_MAXLEN) {
|
||
device_printf(sc->sc_dev,
|
||
"%s: invalid rx statistic header, len %d\n",
|
||
__func__, stat->cfg_phy_len);
|
||
ifp->if_ierrors++;
|
||
return;
|
||
}
|
||
if (desc->type == IWN_AMPDU_RX_DONE) {
|
||
struct iwn_rx_ampdu *ampdu = (struct iwn_rx_ampdu *)(desc + 1);
|
||
head = (caddr_t)(ampdu + 1);
|
||
len = le16toh(ampdu->len);
|
||
} else {
|
||
head = (caddr_t)(stat + 1) + stat->cfg_phy_len;
|
||
len = le16toh(stat->len);
|
||
}
|
||
|
||
/* discard Rx frames with bad CRC early */
|
||
tail = (uint32_t *)(head + len);
|
||
if ((le32toh(*tail) & IWN_RX_NOERROR) != IWN_RX_NOERROR) {
|
||
DPRINTF(sc, IWN_DEBUG_RECV, "%s: rx flags error %x\n",
|
||
__func__, le32toh(*tail));
|
||
ifp->if_ierrors++;
|
||
return;
|
||
}
|
||
if (len < sizeof (struct ieee80211_frame)) {
|
||
DPRINTF(sc, IWN_DEBUG_RECV, "%s: frame too short: %d\n",
|
||
__func__, len);
|
||
ifp->if_ierrors++;
|
||
return;
|
||
}
|
||
|
||
/* XXX don't need mbuf, just dma buffer */
|
||
mnew = m_getjcl(M_DONTWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE);
|
||
if (mnew == NULL) {
|
||
DPRINTF(sc, IWN_DEBUG_ANY, "%s: no mbuf to restock ring\n",
|
||
__func__);
|
||
ifp->if_ierrors++;
|
||
return;
|
||
}
|
||
error = bus_dmamap_load(ring->data_dmat, data->map,
|
||
mtod(mnew, caddr_t), MJUMPAGESIZE,
|
||
iwn_dma_map_addr, &paddr, BUS_DMA_NOWAIT);
|
||
if (error != 0 && error != EFBIG) {
|
||
device_printf(sc->sc_dev,
|
||
"%s: bus_dmamap_load failed, error %d\n", __func__, error);
|
||
m_freem(mnew);
|
||
ifp->if_ierrors++;
|
||
return;
|
||
}
|
||
bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE);
|
||
|
||
/* finalize mbuf and swap in new one */
|
||
m = data->m;
|
||
m->m_pkthdr.rcvif = ifp;
|
||
m->m_data = head;
|
||
m->m_pkthdr.len = m->m_len = len;
|
||
|
||
data->m = mnew;
|
||
/* update Rx descriptor */
|
||
ring->desc[ring->cur] = htole32(paddr >> 8);
|
||
|
||
rssi = iwn_get_rssi(sc, stat);
|
||
|
||
/* grab a reference to the source node */
|
||
wh = mtod(m, struct ieee80211_frame *);
|
||
ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh);
|
||
|
||
nf = (ni != NULL && ni->ni_vap->iv_state == IEEE80211_S_RUN &&
|
||
(ic->ic_flags & IEEE80211_F_SCAN) == 0) ? sc->noise : -95;
|
||
|
||
if (bpf_peers_present(ifp->if_bpf)) {
|
||
struct iwn_rx_radiotap_header *tap = &sc->sc_rxtap;
|
||
|
||
tap->wr_flags = 0;
|
||
tap->wr_dbm_antsignal = rssi;
|
||
tap->wr_dbm_antnoise = nf;
|
||
tap->wr_rate = maprate(stat->rate);
|
||
tap->wr_tsft = htole64(stat->tstamp);
|
||
|
||
if (stat->flags & htole16(IWN_CONFIG_SHPREAMBLE))
|
||
tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
|
||
|
||
bpf_mtap2(ifp->if_bpf, tap, sc->sc_rxtap_len, m);
|
||
}
|
||
|
||
IWN_UNLOCK(sc);
|
||
|
||
/* send the frame to the 802.11 layer */
|
||
if (ni != NULL) {
|
||
(void) ieee80211_input(ni, m, rssi - nf, nf, 0);
|
||
ieee80211_free_node(ni);
|
||
} else
|
||
(void) ieee80211_input_all(ic, m, rssi - nf, nf, 0);
|
||
|
||
IWN_LOCK(sc);
|
||
}
|
||
|
||
void
|
||
iwn_rx_statistics(struct iwn_softc *sc, struct iwn_rx_desc *desc)
|
||
{
|
||
struct ifnet *ifp = sc->sc_ifp;
|
||
struct ieee80211com *ic = ifp->if_l2com;
|
||
struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
|
||
struct iwn_calib_state *calib = &sc->calib;
|
||
struct iwn_stats *stats = (struct iwn_stats *)(desc + 1);
|
||
|
||
/* beacon stats are meaningful only when associated and not scanning */
|
||
if (vap->iv_state != IEEE80211_S_RUN ||
|
||
(ic->ic_flags & IEEE80211_F_SCAN))
|
||
return;
|
||
|
||
DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s: cmd %d\n", __func__, desc->type);
|
||
iwn_calib_reset(sc);
|
||
|
||
/* test if temperature has changed */
|
||
if (stats->general.temp != sc->rawtemp) {
|
||
int temp;
|
||
|
||
sc->rawtemp = stats->general.temp;
|
||
temp = iwn_get_temperature(sc);
|
||
DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s: temperature %d\n",
|
||
__func__, temp);
|
||
|
||
/* update Tx power if need be */
|
||
iwn_power_calibration(sc, temp);
|
||
}
|
||
|
||
if (desc->type != IWN_BEACON_STATISTICS)
|
||
return; /* reply to a statistics request */
|
||
|
||
sc->noise = iwn_get_noise(&stats->rx.general);
|
||
DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s: noise %d\n", __func__, sc->noise);
|
||
|
||
/* test that RSSI and noise are present in stats report */
|
||
if (stats->rx.general.flags != htole32(1)) {
|
||
DPRINTF(sc, IWN_DEBUG_ANY, "%s\n",
|
||
"received statistics without RSSI");
|
||
return;
|
||
}
|
||
|
||
if (calib->state == IWN_CALIB_STATE_ASSOC)
|
||
iwn_compute_differential_gain(sc, &stats->rx.general);
|
||
else if (calib->state == IWN_CALIB_STATE_RUN)
|
||
iwn_tune_sensitivity(sc, &stats->rx);
|
||
}
|
||
|
||
void
|
||
iwn_tx_intr(struct iwn_softc *sc, struct iwn_rx_desc *desc)
|
||
{
|
||
struct ifnet *ifp = sc->sc_ifp;
|
||
struct iwn_tx_ring *ring = &sc->txq[desc->qid & 0xf];
|
||
struct iwn_tx_data *data = &ring->data[desc->idx];
|
||
struct iwn_tx_stat *stat = (struct iwn_tx_stat *)(desc + 1);
|
||
struct iwn_node *wn = IWN_NODE(data->ni);
|
||
struct mbuf *m;
|
||
struct ieee80211_node *ni;
|
||
uint32_t status;
|
||
|
||
KASSERT(data->ni != NULL, ("no node"));
|
||
|
||
DPRINTF(sc, IWN_DEBUG_XMIT, "%s: "
|
||
"qid %d idx %d retries %d nkill %d rate %x duration %d status %x\n",
|
||
__func__, desc->qid, desc->idx, stat->ntries,
|
||
stat->nkill, stat->rate, le16toh(stat->duration),
|
||
le32toh(stat->status));
|
||
|
||
/*
|
||
* Update rate control statistics for the node.
|
||
*/
|
||
status = le32toh(stat->status) & 0xff;
|
||
if (status & 0x80) {
|
||
DPRINTF(sc, IWN_DEBUG_ANY, "%s: status 0x%x\n",
|
||
__func__, le32toh(stat->status));
|
||
ifp->if_oerrors++;
|
||
ieee80211_amrr_tx_complete(&wn->amn,
|
||
IEEE80211_AMRR_FAILURE, stat->ntries);
|
||
} else {
|
||
ieee80211_amrr_tx_complete(&wn->amn,
|
||
IEEE80211_AMRR_SUCCESS, stat->ntries);
|
||
}
|
||
|
||
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;
|
||
|
||
if (m->m_flags & M_TXCB) {
|
||
/*
|
||
* Channels marked for "radar" require traffic to be received
|
||
* to unlock before we can transmit. Until traffic is seen
|
||
* any attempt to transmit is returned immediately with status
|
||
* set to IWN_TX_FAIL_TX_LOCKED. Unfortunately this can easily
|
||
* happen on first authenticate after scanning. To workaround
|
||
* this we ignore a failure of this sort in AUTH state so the
|
||
* 802.11 layer will fall back to using a timeout to wait for
|
||
* the AUTH reply. This allows the firmware time to see
|
||
* traffic so a subsequent retry of AUTH succeeds. It's
|
||
* unclear why the firmware does not maintain state for
|
||
* channels recently visited as this would allow immediate
|
||
* use of the channel after a scan (where we see traffic).
|
||
*/
|
||
if (status == IWN_TX_FAIL_TX_LOCKED &&
|
||
ni->ni_vap->iv_state == IEEE80211_S_AUTH)
|
||
ieee80211_process_callback(ni, m, 0);
|
||
else
|
||
ieee80211_process_callback(ni, m,
|
||
(status & IWN_TX_FAIL) != 0);
|
||
}
|
||
m_freem(m);
|
||
ieee80211_free_node(ni);
|
||
|
||
ring->queued--;
|
||
|
||
sc->sc_tx_timer = 0;
|
||
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
|
||
iwn_start_locked(ifp);
|
||
}
|
||
|
||
void
|
||
iwn_cmd_intr(struct iwn_softc *sc, struct iwn_rx_desc *desc)
|
||
{
|
||
struct iwn_tx_ring *ring = &sc->txq[4];
|
||
struct iwn_tx_data *data;
|
||
|
||
if ((desc->qid & 0xf) != 4)
|
||
return; /* not a command ack */
|
||
|
||
data = &ring->data[desc->idx];
|
||
|
||
/* if the command was mapped in a mbuf, free it */
|
||
if (data->m != NULL) {
|
||
bus_dmamap_unload(ring->data_dmat, data->map);
|
||
m_freem(data->m);
|
||
data->m = NULL;
|
||
}
|
||
|
||
wakeup(&ring->cmd[desc->idx]);
|
||
}
|
||
|
||
static void
|
||
iwn_bmiss(void *arg, int npending)
|
||
{
|
||
struct iwn_softc *sc = arg;
|
||
struct ieee80211com *ic = sc->sc_ifp->if_l2com;
|
||
|
||
ieee80211_beacon_miss(ic);
|
||
}
|
||
|
||
void
|
||
iwn_notif_intr(struct iwn_softc *sc)
|
||
{
|
||
struct ifnet *ifp = sc->sc_ifp;
|
||
struct ieee80211com *ic = ifp->if_l2com;
|
||
struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
|
||
uint16_t hw;
|
||
|
||
hw = le16toh(sc->shared->closed_count) & 0xfff;
|
||
while (sc->rxq.cur != hw) {
|
||
struct iwn_rx_data *data = &sc->rxq.data[sc->rxq.cur];
|
||
struct iwn_rx_desc *desc = (void *)data->m->m_ext.ext_buf;
|
||
|
||
DPRINTF(sc, IWN_DEBUG_RECV,
|
||
"%s: qid %x idx %d flags %x type %d(%s) len %d\n",
|
||
__func__, desc->qid, desc->idx, desc->flags,
|
||
desc->type, iwn_intr_str(desc->type),
|
||
le16toh(desc->len));
|
||
|
||
if (!(desc->qid & 0x80)) /* reply to a command */
|
||
iwn_cmd_intr(sc, desc);
|
||
|
||
switch (desc->type) {
|
||
case IWN_RX_DONE:
|
||
case IWN_AMPDU_RX_DONE:
|
||
iwn_rx_intr(sc, desc, data);
|
||
break;
|
||
|
||
case IWN_AMPDU_RX_START:
|
||
iwn_ampdu_rx_start(sc, desc);
|
||
break;
|
||
|
||
case IWN_TX_DONE:
|
||
/* a 802.11 frame has been transmitted */
|
||
iwn_tx_intr(sc, desc);
|
||
break;
|
||
|
||
case IWN_RX_STATISTICS:
|
||
case IWN_BEACON_STATISTICS:
|
||
iwn_rx_statistics(sc, desc);
|
||
break;
|
||
|
||
case IWN_BEACON_MISSED: {
|
||
struct iwn_beacon_missed *miss =
|
||
(struct iwn_beacon_missed *)(desc + 1);
|
||
int misses = le32toh(miss->consecutive);
|
||
|
||
/* XXX not sure why we're notified w/ zero */
|
||
if (misses == 0)
|
||
break;
|
||
DPRINTF(sc, IWN_DEBUG_STATE,
|
||
"%s: beacons missed %d/%d\n", __func__,
|
||
misses, le32toh(miss->total));
|
||
/*
|
||
* If more than 5 consecutive beacons are missed,
|
||
* reinitialize the sensitivity state machine.
|
||
*/
|
||
if (vap->iv_state == IEEE80211_S_RUN && misses > 5)
|
||
(void) iwn_init_sensitivity(sc);
|
||
if (misses >= vap->iv_bmissthreshold)
|
||
taskqueue_enqueue(taskqueue_swi,
|
||
&sc->sc_bmiss_task);
|
||
break;
|
||
}
|
||
case IWN_UC_READY: {
|
||
struct iwn_ucode_info *uc =
|
||
(struct iwn_ucode_info *)(desc + 1);
|
||
|
||
/* the microcontroller is ready */
|
||
DPRINTF(sc, IWN_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");
|
||
break;
|
||
}
|
||
if (uc->subtype == IWN_UCODE_INIT) {
|
||
/* save microcontroller's report */
|
||
memcpy(&sc->ucode_info, uc, sizeof (*uc));
|
||
}
|
||
break;
|
||
}
|
||
case IWN_STATE_CHANGED: {
|
||
uint32_t *status = (uint32_t *)(desc + 1);
|
||
|
||
/*
|
||
* State change allows hardware switch change to be
|
||
* noted. However, we handle this in iwn_intr as we
|
||
* get both the enable/disble intr.
|
||
*/
|
||
DPRINTF(sc, IWN_DEBUG_INTR, "state changed to %x\n",
|
||
le32toh(*status));
|
||
break;
|
||
}
|
||
case IWN_START_SCAN: {
|
||
struct iwn_start_scan *scan =
|
||
(struct iwn_start_scan *)(desc + 1);
|
||
|
||
DPRINTF(sc, IWN_DEBUG_ANY,
|
||
"%s: scanning channel %d status %x\n",
|
||
__func__, scan->chan, le32toh(scan->status));
|
||
break;
|
||
}
|
||
case IWN_STOP_SCAN: {
|
||
struct iwn_stop_scan *scan =
|
||
(struct iwn_stop_scan *)(desc + 1);
|
||
|
||
DPRINTF(sc, IWN_DEBUG_STATE,
|
||
"scan finished nchan=%d status=%d chan=%d\n",
|
||
scan->nchan, scan->status, scan->chan);
|
||
|
||
iwn_queue_cmd(sc, IWN_SCAN_NEXT, 0, IWN_QUEUE_NORMAL);
|
||
break;
|
||
}
|
||
}
|
||
sc->rxq.cur = (sc->rxq.cur + 1) % IWN_RX_RING_COUNT;
|
||
}
|
||
|
||
/* tell the firmware what we have processed */
|
||
hw = (hw == 0) ? IWN_RX_RING_COUNT - 1 : hw - 1;
|
||
IWN_WRITE(sc, IWN_RX_WIDX, hw & ~7);
|
||
}
|
||
|
||
void
|
||
iwn_intr(void *arg)
|
||
{
|
||
struct iwn_softc *sc = arg;
|
||
uint32_t r1, r2;
|
||
|
||
IWN_LOCK(sc);
|
||
|
||
/* disable interrupts */
|
||
IWN_WRITE(sc, IWN_MASK, 0);
|
||
|
||
r1 = IWN_READ(sc, IWN_INTR);
|
||
r2 = IWN_READ(sc, IWN_INTR_STATUS);
|
||
|
||
if (r1 == 0 && r2 == 0) {
|
||
IWN_WRITE(sc, IWN_MASK, IWN_INTR_MASK);
|
||
goto done; /* not for us */
|
||
}
|
||
|
||
if (r1 == 0xffffffff)
|
||
goto done; /* hardware gone */
|
||
|
||
/* ack interrupts */
|
||
IWN_WRITE(sc, IWN_INTR, r1);
|
||
IWN_WRITE(sc, IWN_INTR_STATUS, r2);
|
||
|
||
DPRINTF(sc, IWN_DEBUG_INTR, "interrupt reg1=%x reg2=%x\n", r1, r2);
|
||
|
||
if (r1 & IWN_RF_TOGGLED) {
|
||
uint32_t tmp = IWN_READ(sc, IWN_GPIO_CTL);
|
||
device_printf(sc->sc_dev, "RF switch: radio %s\n",
|
||
(tmp & IWN_GPIO_RF_ENABLED) ? "enabled" : "disabled");
|
||
if (tmp & IWN_GPIO_RF_ENABLED)
|
||
iwn_queue_cmd(sc, IWN_RADIO_ENABLE, 0, IWN_QUEUE_CLEAR);
|
||
else
|
||
iwn_queue_cmd(sc, IWN_RADIO_DISABLE, 0, IWN_QUEUE_CLEAR);
|
||
}
|
||
if (r1 & IWN_CT_REACHED)
|
||
device_printf(sc->sc_dev, "critical temperature reached!\n");
|
||
if (r1 & (IWN_SW_ERROR | IWN_HW_ERROR)) {
|
||
device_printf(sc->sc_dev, "error, INTR=%b STATUS=0x%x\n",
|
||
r1, IWN_INTR_BITS, r2);
|
||
iwn_queue_cmd(sc, IWN_REINIT, 0, IWN_QUEUE_CLEAR);
|
||
goto done;
|
||
}
|
||
if ((r1 & (IWN_RX_INTR | IWN_SW_RX_INTR)) || (r2 & IWN_RX_STATUS_INTR))
|
||
iwn_notif_intr(sc);
|
||
if (r1 & IWN_ALIVE_INTR)
|
||
wakeup(sc);
|
||
|
||
/* re-enable interrupts */
|
||
IWN_WRITE(sc, IWN_MASK, IWN_INTR_MASK);
|
||
done:
|
||
IWN_UNLOCK(sc);
|
||
}
|
||
|
||
uint8_t
|
||
iwn_plcp_signal(int rate)
|
||
{
|
||
switch (rate) {
|
||
/* CCK rates (returned values are device-dependent) */
|
||
case 2: return 10;
|
||
case 4: return 20;
|
||
case 11: return 55;
|
||
case 22: return 110;
|
||
|
||
/* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */
|
||
/* R1-R4, (u)ral is R4-R1 */
|
||
case 12: return 0xd;
|
||
case 18: return 0xf;
|
||
case 24: return 0x5;
|
||
case 36: return 0x7;
|
||
case 48: return 0x9;
|
||
case 72: return 0xb;
|
||
case 96: return 0x1;
|
||
case 108: return 0x3;
|
||
case 120: return 0x3;
|
||
}
|
||
/* unknown rate (should not get there) */
|
||
return 0;
|
||
}
|
||
|
||
/* determine if a given rate is CCK or OFDM */
|
||
#define IWN_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22)
|
||
|
||
int
|
||
iwn_tx_data(struct iwn_softc *sc, struct mbuf *m0, struct ieee80211_node *ni,
|
||
struct iwn_tx_ring *ring)
|
||
{
|
||
struct ieee80211vap *vap = ni->ni_vap;
|
||
struct ieee80211com *ic = ni->ni_ic;
|
||
struct ifnet *ifp = sc->sc_ifp;
|
||
const struct ieee80211_txparam *tp;
|
||
struct iwn_tx_desc *desc;
|
||
struct iwn_tx_data *data;
|
||
struct iwn_tx_cmd *cmd;
|
||
struct iwn_cmd_data *tx;
|
||
struct ieee80211_frame *wh;
|
||
struct ieee80211_key *k;
|
||
bus_addr_t paddr;
|
||
uint32_t flags;
|
||
uint16_t timeout;
|
||
uint8_t type;
|
||
u_int hdrlen;
|
||
struct mbuf *mnew;
|
||
int rate, error, pad, nsegs, i, ismcast, id;
|
||
bus_dma_segment_t segs[IWN_MAX_SCATTER];
|
||
|
||
IWN_LOCK_ASSERT(sc);
|
||
|
||
wh = mtod(m0, struct ieee80211_frame *);
|
||
type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
|
||
ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1);
|
||
hdrlen = ieee80211_anyhdrsize(wh);
|
||
|
||
/* pick a tx rate */
|
||
/* XXX ni_chan */
|
||
tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
|
||
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 {
|
||
(void) ieee80211_amrr_choose(ni, &IWN_NODE(ni)->amn);
|
||
rate = ni->ni_txrate;
|
||
}
|
||
|
||
if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
|
||
k = ieee80211_crypto_encap(ni, m0);
|
||
if (k == NULL) {
|
||
m_freem(m0);
|
||
return ENOBUFS;
|
||
}
|
||
/* packet header may have moved, reset our local pointer */
|
||
wh = mtod(m0, struct ieee80211_frame *);
|
||
} else
|
||
k = NULL;
|
||
|
||
if (bpf_peers_present(ifp->if_bpf)) {
|
||
struct iwn_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;
|
||
|
||
bpf_mtap2(ifp->if_bpf, tap, sc->sc_txtap_len, m0);
|
||
}
|
||
|
||
flags = IWN_TX_AUTO_SEQ;
|
||
/* XXX honor ACM */
|
||
if (!ismcast)
|
||
flags |= IWN_TX_NEED_ACK;
|
||
|
||
if (ismcast || type != IEEE80211_FC0_TYPE_DATA)
|
||
id = IWN_ID_BROADCAST;
|
||
else
|
||
id = IWN_ID_BSS;
|
||
|
||
/* check if RTS/CTS or CTS-to-self protection must be used */
|
||
if (!ismcast) {
|
||
/* multicast frames are not sent at OFDM rates in 802.11b/g */
|
||
if (m0->m_pkthdr.len+IEEE80211_CRC_LEN > vap->iv_rtsthreshold) {
|
||
flags |= IWN_TX_NEED_RTS | IWN_TX_FULL_TXOP;
|
||
} else if ((ic->ic_flags & IEEE80211_F_USEPROT) &&
|
||
IWN_RATE_IS_OFDM(rate)) {
|
||
if (ic->ic_protmode == IEEE80211_PROT_CTSONLY)
|
||
flags |= IWN_TX_NEED_CTS | IWN_TX_FULL_TXOP;
|
||
else if (ic->ic_protmode == IEEE80211_PROT_RTSCTS)
|
||
flags |= IWN_TX_NEED_RTS | IWN_TX_FULL_TXOP;
|
||
}
|
||
}
|
||
|
||
if (type == IEEE80211_FC0_TYPE_MGT) {
|
||
uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
|
||
|
||
/* tell h/w to set timestamp in probe responses */
|
||
if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP)
|
||
flags |= IWN_TX_INSERT_TSTAMP;
|
||
|
||
if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ ||
|
||
subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ)
|
||
timeout = htole16(3);
|
||
else
|
||
timeout = htole16(2);
|
||
} else
|
||
timeout = htole16(0);
|
||
|
||
if (hdrlen & 3) {
|
||
/* first segment's length must be a multiple of 4 */
|
||
flags |= IWN_TX_NEED_PADDING;
|
||
pad = 4 - (hdrlen & 3);
|
||
} else
|
||
pad = 0;
|
||
|
||
desc = &ring->desc[ring->cur];
|
||
data = &ring->data[ring->cur];
|
||
|
||
cmd = &ring->cmd[ring->cur];
|
||
cmd->code = IWN_CMD_TX_DATA;
|
||
cmd->flags = 0;
|
||
cmd->qid = ring->qid;
|
||
cmd->idx = ring->cur;
|
||
|
||
tx = (struct iwn_cmd_data *)cmd->data;
|
||
/* NB: no need to bzero tx, all fields are reinitialized here */
|
||
tx->id = id;
|
||
tx->flags = htole32(flags);
|
||
tx->len = htole16(m0->m_pkthdr.len);
|
||
tx->rate = iwn_plcp_signal(rate);
|
||
tx->rts_ntries = 60; /* XXX? */
|
||
tx->data_ntries = 15; /* XXX? */
|
||
tx->lifetime = htole32(IWN_LIFETIME_INFINITE);
|
||
tx->timeout = timeout;
|
||
|
||
if (k != NULL) {
|
||
/* XXX fill in */;
|
||
} else
|
||
tx->security = 0;
|
||
|
||
/* XXX alternate between Ant A and Ant B ? */
|
||
tx->rflags = IWN_RFLAG_ANT_B;
|
||
if (tx->id == IWN_ID_BROADCAST) {
|
||
tx->ridx = IWN_MAX_TX_RETRIES - 1;
|
||
if (!IWN_RATE_IS_OFDM(rate))
|
||
tx->rflags |= IWN_RFLAG_CCK;
|
||
} else {
|
||
tx->ridx = 0;
|
||
/* tell adapter to ignore rflags */
|
||
tx->flags |= htole32(IWN_TX_USE_NODE_RATE);
|
||
}
|
||
|
||
/* copy and trim IEEE802.11 header */
|
||
memcpy((uint8_t *)(tx + 1), wh, hdrlen);
|
||
m_adj(m0, hdrlen);
|
||
|
||
error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, m0, segs,
|
||
&nsegs, BUS_DMA_NOWAIT);
|
||
if (error != 0) {
|
||
if (error == EFBIG) {
|
||
/* too many fragments, linearize */
|
||
mnew = m_collapse(m0, M_DONTWAIT, IWN_MAX_SCATTER);
|
||
if (mnew == NULL) {
|
||
IWN_UNLOCK(sc);
|
||
device_printf(sc->sc_dev,
|
||
"%s: could not defrag mbuf\n", __func__);
|
||
m_freem(m0);
|
||
return ENOBUFS;
|
||
}
|
||
m0 = mnew;
|
||
error = bus_dmamap_load_mbuf_sg(ring->data_dmat,
|
||
data->map, m0, segs, &nsegs, BUS_DMA_NOWAIT);
|
||
}
|
||
if (error != 0) {
|
||
IWN_UNLOCK(sc);
|
||
device_printf(sc->sc_dev,
|
||
"%s: bus_dmamap_load_mbuf_sg failed, error %d\n",
|
||
__func__, error);
|
||
m_freem(m0);
|
||
return error;
|
||
}
|
||
}
|
||
|
||
data->m = m0;
|
||
data->ni = ni;
|
||
|
||
DPRINTF(sc, IWN_DEBUG_XMIT, "%s: qid %d idx %d len %d nsegs %d\n",
|
||
__func__, ring->qid, ring->cur, m0->m_pkthdr.len, nsegs);
|
||
|
||
paddr = ring->cmd_dma.paddr + ring->cur * sizeof (struct iwn_tx_cmd);
|
||
tx->loaddr = htole32(paddr + 4 +
|
||
offsetof(struct iwn_cmd_data, ntries));
|
||
tx->hiaddr = 0; /* limit to 32-bit physical addresses */
|
||
|
||
/* first scatter/gather segment is used by the tx data command */
|
||
IWN_SET_DESC_NSEGS(desc, 1 + nsegs);
|
||
IWN_SET_DESC_SEG(desc, 0, paddr, 4 + sizeof (*tx) + hdrlen + pad);
|
||
for (i = 1; i <= nsegs; i++) {
|
||
IWN_SET_DESC_SEG(desc, i, segs[i - 1].ds_addr,
|
||
segs[i - 1].ds_len);
|
||
}
|
||
sc->shared->len[ring->qid][ring->cur] =
|
||
htole16(hdrlen + m0->m_pkthdr.len + 8);
|
||
|
||
if (ring->cur < IWN_TX_WINDOW)
|
||
sc->shared->len[ring->qid][ring->cur + IWN_TX_RING_COUNT] =
|
||
htole16(hdrlen + m0->m_pkthdr.len + 8);
|
||
|
||
ring->queued++;
|
||
|
||
/* kick Tx ring */
|
||
ring->cur = (ring->cur + 1) % IWN_TX_RING_COUNT;
|
||
IWN_WRITE(sc, IWN_TX_WIDX, ring->qid << 8 | ring->cur);
|
||
|
||
ifp->if_opackets++;
|
||
sc->sc_tx_timer = 5;
|
||
|
||
return 0;
|
||
}
|
||
|
||
void
|
||
iwn_start(struct ifnet *ifp)
|
||
{
|
||
struct iwn_softc *sc = ifp->if_softc;
|
||
|
||
IWN_LOCK(sc);
|
||
iwn_start_locked(ifp);
|
||
IWN_UNLOCK(sc);
|
||
}
|
||
|
||
void
|
||
iwn_start_locked(struct ifnet *ifp)
|
||
{
|
||
struct iwn_softc *sc = ifp->if_softc;
|
||
struct ieee80211_node *ni;
|
||
struct iwn_tx_ring *txq;
|
||
struct mbuf *m;
|
||
int pri;
|
||
|
||
IWN_LOCK_ASSERT(sc);
|
||
|
||
for (;;) {
|
||
IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
|
||
if (m == NULL)
|
||
break;
|
||
ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
|
||
pri = M_WME_GETAC(m);
|
||
txq = &sc->txq[pri];
|
||
m = ieee80211_encap(ni, m);
|
||
if (m == NULL) {
|
||
ifp->if_oerrors++;
|
||
ieee80211_free_node(ni);
|
||
continue;
|
||
}
|
||
if (txq->queued >= IWN_TX_RING_COUNT - 8) {
|
||
/* XXX not right */
|
||
/* ring is nearly full, stop flow */
|
||
ifp->if_drv_flags |= IFF_DRV_OACTIVE;
|
||
}
|
||
if (iwn_tx_data(sc, m, ni, txq) != 0) {
|
||
ifp->if_oerrors++;
|
||
ieee80211_free_node(ni);
|
||
IWN_UNLOCK(sc);
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
static int
|
||
iwn_tx_handoff(struct iwn_softc *sc,
|
||
struct iwn_tx_ring *ring,
|
||
struct iwn_tx_cmd *cmd,
|
||
struct iwn_cmd_data *tx,
|
||
struct ieee80211_node *ni,
|
||
struct mbuf *m0, u_int hdrlen, int pad)
|
||
{
|
||
struct ifnet *ifp = sc->sc_ifp;
|
||
struct iwn_tx_desc *desc;
|
||
struct iwn_tx_data *data;
|
||
bus_addr_t paddr;
|
||
struct mbuf *mnew;
|
||
int error, nsegs, i;
|
||
bus_dma_segment_t segs[IWN_MAX_SCATTER];
|
||
|
||
/* copy and trim IEEE802.11 header */
|
||
memcpy((uint8_t *)(tx + 1), mtod(m0, uint8_t *), hdrlen);
|
||
m_adj(m0, hdrlen);
|
||
|
||
desc = &ring->desc[ring->cur];
|
||
data = &ring->data[ring->cur];
|
||
|
||
error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, m0, segs,
|
||
&nsegs, BUS_DMA_NOWAIT);
|
||
if (error != 0) {
|
||
if (error == EFBIG) {
|
||
/* too many fragments, linearize */
|
||
mnew = m_collapse(m0, M_DONTWAIT, IWN_MAX_SCATTER);
|
||
if (mnew == NULL) {
|
||
IWN_UNLOCK(sc);
|
||
device_printf(sc->sc_dev,
|
||
"%s: could not defrag mbuf\n", __func__);
|
||
m_freem(m0);
|
||
return ENOBUFS;
|
||
}
|
||
m0 = mnew;
|
||
error = bus_dmamap_load_mbuf_sg(ring->data_dmat,
|
||
data->map, m0, segs, &nsegs, BUS_DMA_NOWAIT);
|
||
}
|
||
if (error != 0) {
|
||
IWN_UNLOCK(sc);
|
||
device_printf(sc->sc_dev,
|
||
"%s: bus_dmamap_load_mbuf_sg failed, error %d\n",
|
||
__func__, error);
|
||
m_freem(m0);
|
||
return error;
|
||
}
|
||
}
|
||
|
||
data->m = m0;
|
||
data->ni = ni;
|
||
|
||
DPRINTF(sc, IWN_DEBUG_XMIT, "%s: qid %d idx %d len %d nsegs %d\n",
|
||
__func__, ring->qid, ring->cur, m0->m_pkthdr.len, nsegs);
|
||
|
||
paddr = ring->cmd_dma.paddr + ring->cur * sizeof (struct iwn_tx_cmd);
|
||
tx->loaddr = htole32(paddr + 4 +
|
||
offsetof(struct iwn_cmd_data, ntries));
|
||
tx->hiaddr = 0; /* limit to 32-bit physical addresses */
|
||
|
||
/* first scatter/gather segment is used by the tx data command */
|
||
IWN_SET_DESC_NSEGS(desc, 1 + nsegs);
|
||
IWN_SET_DESC_SEG(desc, 0, paddr, 4 + sizeof (*tx) + hdrlen + pad);
|
||
for (i = 1; i <= nsegs; i++) {
|
||
IWN_SET_DESC_SEG(desc, i, segs[i - 1].ds_addr,
|
||
segs[i - 1].ds_len);
|
||
}
|
||
sc->shared->len[ring->qid][ring->cur] =
|
||
htole16(hdrlen + m0->m_pkthdr.len + 8);
|
||
|
||
if (ring->cur < IWN_TX_WINDOW)
|
||
sc->shared->len[ring->qid][ring->cur + IWN_TX_RING_COUNT] =
|
||
htole16(hdrlen + m0->m_pkthdr.len + 8);
|
||
|
||
ring->queued++;
|
||
|
||
/* kick Tx ring */
|
||
ring->cur = (ring->cur + 1) % IWN_TX_RING_COUNT;
|
||
IWN_WRITE(sc, IWN_TX_WIDX, ring->qid << 8 | ring->cur);
|
||
|
||
ifp->if_opackets++;
|
||
sc->sc_tx_timer = 5;
|
||
|
||
return 0;
|
||
}
|
||
|
||
static int
|
||
iwn_tx_data_raw(struct iwn_softc *sc, struct mbuf *m0,
|
||
struct ieee80211_node *ni, struct iwn_tx_ring *ring,
|
||
const struct ieee80211_bpf_params *params)
|
||
{
|
||
struct ifnet *ifp = sc->sc_ifp;
|
||
struct iwn_tx_cmd *cmd;
|
||
struct iwn_cmd_data *tx;
|
||
struct ieee80211_frame *wh;
|
||
uint32_t flags;
|
||
uint8_t type, subtype;
|
||
u_int hdrlen;
|
||
int rate, pad;
|
||
|
||
IWN_LOCK_ASSERT(sc);
|
||
|
||
wh = mtod(m0, struct ieee80211_frame *);
|
||
type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
|
||
subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
|
||
hdrlen = ieee80211_anyhdrsize(wh);
|
||
|
||
flags = IWN_TX_AUTO_SEQ;
|
||
if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0)
|
||
flags |= IWN_TX_NEED_ACK;
|
||
if (params->ibp_flags & IEEE80211_BPF_RTS)
|
||
flags |= IWN_TX_NEED_RTS | IWN_TX_FULL_TXOP;
|
||
if (params->ibp_flags & IEEE80211_BPF_CTS)
|
||
flags |= IWN_TX_NEED_CTS | IWN_TX_FULL_TXOP;
|
||
if (type == IEEE80211_FC0_TYPE_MGT &&
|
||
subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP) {
|
||
/* tell h/w to set timestamp in probe responses */
|
||
flags |= IWN_TX_INSERT_TSTAMP;
|
||
}
|
||
if (hdrlen & 3) {
|
||
/* first segment's length must be a multiple of 4 */
|
||
flags |= IWN_TX_NEED_PADDING;
|
||
pad = 4 - (hdrlen & 3);
|
||
} else
|
||
pad = 0;
|
||
|
||
/* pick a tx rate */
|
||
rate = params->ibp_rate0;
|
||
|
||
if (bpf_peers_present(ifp->if_bpf)) {
|
||
struct iwn_tx_radiotap_header *tap = &sc->sc_txtap;
|
||
|
||
tap->wt_flags = 0;
|
||
tap->wt_rate = rate;
|
||
|
||
bpf_mtap2(ifp->if_bpf, tap, sc->sc_txtap_len, m0);
|
||
}
|
||
|
||
cmd = &ring->cmd[ring->cur];
|
||
cmd->code = IWN_CMD_TX_DATA;
|
||
cmd->flags = 0;
|
||
cmd->qid = ring->qid;
|
||
cmd->idx = ring->cur;
|
||
|
||
tx = (struct iwn_cmd_data *)cmd->data;
|
||
/* NB: no need to bzero tx, all fields are reinitialized here */
|
||
tx->id = IWN_ID_BROADCAST;
|
||
tx->flags = htole32(flags);
|
||
tx->len = htole16(m0->m_pkthdr.len);
|
||
tx->rate = iwn_plcp_signal(rate);
|
||
tx->rts_ntries = params->ibp_try1; /* XXX? */
|
||
tx->data_ntries = params->ibp_try0;
|
||
tx->lifetime = htole32(IWN_LIFETIME_INFINITE);
|
||
/* XXX use try count? */
|
||
if (type == IEEE80211_FC0_TYPE_MGT) {
|
||
if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ ||
|
||
subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ)
|
||
tx->timeout = htole16(3);
|
||
else
|
||
tx->timeout = htole16(2);
|
||
} else
|
||
tx->timeout = htole16(0);
|
||
tx->security = 0;
|
||
/* XXX alternate between Ant A and Ant B ? */
|
||
tx->rflags = IWN_RFLAG_ANT_B; /* XXX params->ibp_pri >> 2 */
|
||
tx->ridx = IWN_MAX_TX_RETRIES - 1;
|
||
if (!IWN_RATE_IS_OFDM(rate))
|
||
tx->rflags |= IWN_RFLAG_CCK;
|
||
|
||
return iwn_tx_handoff(sc, ring, cmd, tx, ni, m0, hdrlen, pad);
|
||
}
|
||
|
||
static int
|
||
iwn_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 iwn_softc *sc = ifp->if_softc;
|
||
struct iwn_tx_ring *txq;
|
||
int error;
|
||
|
||
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
|
||
ieee80211_free_node(ni);
|
||
m_freem(m);
|
||
return ENETDOWN;
|
||
}
|
||
|
||
IWN_LOCK(sc);
|
||
if (params == NULL)
|
||
txq = &sc->txq[M_WME_GETAC(m)];
|
||
else
|
||
txq = &sc->txq[params->ibp_pri & 3];
|
||
if (txq->queued >= IWN_TX_RING_COUNT - 8) {
|
||
/* XXX not right */
|
||
/* ring is nearly full, stop flow */
|
||
ifp->if_drv_flags |= IFF_DRV_OACTIVE;
|
||
}
|
||
if (params == NULL) {
|
||
/*
|
||
* Legacy path; interpret frame contents to decide
|
||
* precisely how to send the frame.
|
||
*/
|
||
error = iwn_tx_data(sc, m, ni, txq);
|
||
} else {
|
||
/*
|
||
* Caller supplied explicit parameters to use in
|
||
* sending the frame.
|
||
*/
|
||
error = iwn_tx_data_raw(sc, m, ni, txq, params);
|
||
}
|
||
if (error != 0) {
|
||
/* NB: m is reclaimed on tx failure */
|
||
ieee80211_free_node(ni);
|
||
ifp->if_oerrors++;
|
||
}
|
||
IWN_UNLOCK(sc);
|
||
return error;
|
||
}
|
||
|
||
static void
|
||
iwn_watchdog(struct iwn_softc *sc)
|
||
{
|
||
if (sc->sc_tx_timer > 0 && --sc->sc_tx_timer == 0) {
|
||
struct ifnet *ifp = sc->sc_ifp;
|
||
|
||
if_printf(ifp, "device timeout\n");
|
||
iwn_queue_cmd(sc, IWN_REINIT, 0, IWN_QUEUE_CLEAR);
|
||
}
|
||
}
|
||
|
||
int
|
||
iwn_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
|
||
{
|
||
struct iwn_softc *sc = ifp->if_softc;
|
||
struct ieee80211com *ic = ifp->if_l2com;
|
||
struct ifreq *ifr = (struct ifreq *) data;
|
||
int error = 0, startall = 0;
|
||
|
||
switch (cmd) {
|
||
case SIOCSIFFLAGS:
|
||
IWN_LOCK(sc);
|
||
if (ifp->if_flags & IFF_UP) {
|
||
if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
|
||
iwn_init_locked(sc);
|
||
startall = 1;
|
||
}
|
||
} else {
|
||
if (ifp->if_drv_flags & IFF_DRV_RUNNING)
|
||
iwn_stop_locked(sc);
|
||
}
|
||
IWN_UNLOCK(sc);
|
||
if (startall)
|
||
ieee80211_start_all(ic);
|
||
break;
|
||
case SIOCGIFMEDIA:
|
||
error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
|
||
break;
|
||
case SIOCGIFADDR:
|
||
error = ether_ioctl(ifp, cmd, data);
|
||
break;
|
||
default:
|
||
error = EINVAL;
|
||
break;
|
||
}
|
||
return error;
|
||
}
|
||
|
||
void
|
||
iwn_read_eeprom(struct iwn_softc *sc)
|
||
{
|
||
struct ifnet *ifp = sc->sc_ifp;
|
||
struct ieee80211com *ic = ifp->if_l2com;
|
||
char domain[4];
|
||
uint16_t val;
|
||
int i, error;
|
||
|
||
if ((error = iwn_eeprom_lock(sc)) != 0) {
|
||
device_printf(sc->sc_dev,
|
||
"%s: could not lock EEPROM, error %d\n", __func__, error);
|
||
return;
|
||
}
|
||
/* read and print regulatory domain */
|
||
iwn_read_prom_data(sc, IWN_EEPROM_DOMAIN, domain, 4);
|
||
device_printf(sc->sc_dev,"Reg Domain: %.4s", domain);
|
||
|
||
/* read and print MAC address */
|
||
iwn_read_prom_data(sc, IWN_EEPROM_MAC, ic->ic_myaddr, 6);
|
||
printf(", address %s\n", ether_sprintf(ic->ic_myaddr));
|
||
|
||
/* read the list of authorized channels */
|
||
iwn_read_eeprom_channels(sc);
|
||
|
||
/* read maximum allowed Tx power for 2GHz and 5GHz bands */
|
||
iwn_read_prom_data(sc, IWN_EEPROM_MAXPOW, &val, 2);
|
||
sc->maxpwr2GHz = val & 0xff;
|
||
sc->maxpwr5GHz = val >> 8;
|
||
/* check that EEPROM values are correct */
|
||
if (sc->maxpwr5GHz < 20 || sc->maxpwr5GHz > 50)
|
||
sc->maxpwr5GHz = 38;
|
||
if (sc->maxpwr2GHz < 20 || sc->maxpwr2GHz > 50)
|
||
sc->maxpwr2GHz = 38;
|
||
DPRINTF(sc, IWN_DEBUG_RESET, "maxpwr 2GHz=%d 5GHz=%d\n",
|
||
sc->maxpwr2GHz, sc->maxpwr5GHz);
|
||
|
||
/* read voltage at which samples were taken */
|
||
iwn_read_prom_data(sc, IWN_EEPROM_VOLTAGE, &val, 2);
|
||
sc->eeprom_voltage = (int16_t)le16toh(val);
|
||
DPRINTF(sc, IWN_DEBUG_RESET, "voltage=%d (in 0.3V)\n",
|
||
sc->eeprom_voltage);
|
||
|
||
/* read power groups */
|
||
iwn_read_prom_data(sc, IWN_EEPROM_BANDS, sc->bands, sizeof sc->bands);
|
||
#ifdef IWN_DEBUG
|
||
if (sc->sc_debug & IWN_DEBUG_ANY) {
|
||
for (i = 0; i < IWN_NBANDS; i++)
|
||
iwn_print_power_group(sc, i);
|
||
}
|
||
#endif
|
||
iwn_eeprom_unlock(sc);
|
||
}
|
||
|
||
struct iwn_chan_band {
|
||
uint32_t addr; /* offset in EEPROM */
|
||
uint32_t flags; /* net80211 flags */
|
||
uint8_t nchan;
|
||
#define IWN_MAX_CHAN_PER_BAND 14
|
||
uint8_t chan[IWN_MAX_CHAN_PER_BAND];
|
||
};
|
||
|
||
static void
|
||
iwn_read_eeprom_band(struct iwn_softc *sc, const struct iwn_chan_band *band)
|
||
{
|
||
struct ifnet *ifp = sc->sc_ifp;
|
||
struct ieee80211com *ic = ifp->if_l2com;
|
||
struct iwn_eeprom_chan channels[IWN_MAX_CHAN_PER_BAND];
|
||
struct ieee80211_channel *c;
|
||
int i, chan, flags;
|
||
|
||
iwn_read_prom_data(sc, band->addr, channels,
|
||
band->nchan * sizeof (struct iwn_eeprom_chan));
|
||
|
||
for (i = 0; i < band->nchan; i++) {
|
||
if (!(channels[i].flags & IWN_EEPROM_CHAN_VALID)) {
|
||
DPRINTF(sc, IWN_DEBUG_RESET,
|
||
"skip chan %d flags 0x%x maxpwr %d\n",
|
||
band->chan[i], channels[i].flags,
|
||
channels[i].maxpwr);
|
||
continue;
|
||
}
|
||
chan = band->chan[i];
|
||
|
||
/* translate EEPROM flags to net80211 */
|
||
flags = 0;
|
||
if ((channels[i].flags & IWN_EEPROM_CHAN_ACTIVE) == 0)
|
||
flags |= IEEE80211_CHAN_PASSIVE;
|
||
if ((channels[i].flags & IWN_EEPROM_CHAN_IBSS) == 0)
|
||
flags |= IEEE80211_CHAN_NOADHOC;
|
||
if (channels[i].flags & IWN_EEPROM_CHAN_RADAR) {
|
||
flags |= IEEE80211_CHAN_DFS;
|
||
/* XXX apparently IBSS may still be marked */
|
||
flags |= IEEE80211_CHAN_NOADHOC;
|
||
}
|
||
|
||
DPRINTF(sc, IWN_DEBUG_RESET,
|
||
"add chan %d flags 0x%x maxpwr %d\n",
|
||
chan, channels[i].flags, channels[i].maxpwr);
|
||
|
||
c = &ic->ic_channels[ic->ic_nchans++];
|
||
c->ic_ieee = chan;
|
||
c->ic_freq = ieee80211_ieee2mhz(chan, band->flags);
|
||
c->ic_maxregpower = channels[i].maxpwr;
|
||
c->ic_maxpower = 2*c->ic_maxregpower;
|
||
if (band->flags & IEEE80211_CHAN_2GHZ) {
|
||
/* G =>'s B is supported */
|
||
c->ic_flags = IEEE80211_CHAN_B | flags;
|
||
|
||
c = &ic->ic_channels[ic->ic_nchans++];
|
||
c[0] = c[-1];
|
||
c->ic_flags = IEEE80211_CHAN_G | flags;
|
||
} else { /* 5GHz band */
|
||
c->ic_flags = IEEE80211_CHAN_A | flags;
|
||
}
|
||
/* XXX no constraints on using HT20 */
|
||
/* add HT20, HT40 added separately */
|
||
c = &ic->ic_channels[ic->ic_nchans++];
|
||
c[0] = c[-1];
|
||
c->ic_flags |= IEEE80211_CHAN_HT20;
|
||
/* XXX NARROW =>'s 1/2 and 1/4 width? */
|
||
}
|
||
}
|
||
|
||
static void
|
||
iwn_read_eeprom_ht40(struct iwn_softc *sc, const struct iwn_chan_band *band)
|
||
{
|
||
struct ifnet *ifp = sc->sc_ifp;
|
||
struct ieee80211com *ic = ifp->if_l2com;
|
||
struct iwn_eeprom_chan channels[IWN_MAX_CHAN_PER_BAND];
|
||
struct ieee80211_channel *c, *cent, *extc;
|
||
int i;
|
||
|
||
iwn_read_prom_data(sc, band->addr, channels,
|
||
band->nchan * sizeof (struct iwn_eeprom_chan));
|
||
|
||
for (i = 0; i < band->nchan; i++) {
|
||
if (!(channels[i].flags & IWN_EEPROM_CHAN_VALID) ||
|
||
!(channels[i].flags & IWN_EEPROM_CHAN_WIDE)) {
|
||
DPRINTF(sc, IWN_DEBUG_RESET,
|
||
"skip chan %d flags 0x%x maxpwr %d\n",
|
||
band->chan[i], channels[i].flags,
|
||
channels[i].maxpwr);
|
||
continue;
|
||
}
|
||
/*
|
||
* Each entry defines an HT40 channel pair; find the
|
||
* center channel, then the extension channel above.
|
||
*/
|
||
cent = ieee80211_find_channel_byieee(ic, band->chan[i],
|
||
band->flags & ~IEEE80211_CHAN_HT);
|
||
if (cent == NULL) { /* XXX shouldn't happen */
|
||
device_printf(sc->sc_dev,
|
||
"%s: no entry for channel %d\n",
|
||
__func__, band->chan[i]);
|
||
continue;
|
||
}
|
||
extc = ieee80211_find_channel(ic, cent->ic_freq+20,
|
||
band->flags & ~IEEE80211_CHAN_HT);
|
||
if (extc == NULL) {
|
||
DPRINTF(sc, IWN_DEBUG_RESET,
|
||
"skip chan %d, extension channel not found\n",
|
||
band->chan[i]);
|
||
continue;
|
||
}
|
||
|
||
DPRINTF(sc, IWN_DEBUG_RESET,
|
||
"add ht40 chan %d flags 0x%x maxpwr %d\n",
|
||
band->chan[i], channels[i].flags, channels[i].maxpwr);
|
||
|
||
c = &ic->ic_channels[ic->ic_nchans++];
|
||
c[0] = cent[0];
|
||
c->ic_extieee = extc->ic_ieee;
|
||
c->ic_flags &= ~IEEE80211_CHAN_HT;
|
||
c->ic_flags |= IEEE80211_CHAN_HT40U;
|
||
c = &ic->ic_channels[ic->ic_nchans++];
|
||
c[0] = extc[0];
|
||
c->ic_extieee = cent->ic_ieee;
|
||
c->ic_flags &= ~IEEE80211_CHAN_HT;
|
||
c->ic_flags |= IEEE80211_CHAN_HT40D;
|
||
}
|
||
}
|
||
|
||
static void
|
||
iwn_read_eeprom_channels(struct iwn_softc *sc)
|
||
{
|
||
#define N(a) (sizeof(a)/sizeof(a[0]))
|
||
static const struct iwn_chan_band iwn_bands[] = {
|
||
{ IWN_EEPROM_BAND1, IEEE80211_CHAN_G, 14,
|
||
{ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 } },
|
||
{ IWN_EEPROM_BAND2, IEEE80211_CHAN_A, 13,
|
||
{ 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16 } },
|
||
{ IWN_EEPROM_BAND3, IEEE80211_CHAN_A, 12,
|
||
{ 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64 } },
|
||
{ IWN_EEPROM_BAND4, IEEE80211_CHAN_A, 11,
|
||
{ 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140 } },
|
||
{ IWN_EEPROM_BAND5, IEEE80211_CHAN_A, 6,
|
||
{ 145, 149, 153, 157, 161, 165 } },
|
||
{ IWN_EEPROM_BAND6, IEEE80211_CHAN_G | IEEE80211_CHAN_HT40, 7,
|
||
{ 1, 2, 3, 4, 5, 6, 7 } },
|
||
{ IWN_EEPROM_BAND7, IEEE80211_CHAN_A | IEEE80211_CHAN_HT40, 11,
|
||
{ 36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157 } }
|
||
};
|
||
struct ifnet *ifp = sc->sc_ifp;
|
||
struct ieee80211com *ic = ifp->if_l2com;
|
||
int i;
|
||
|
||
/* read the list of authorized channels */
|
||
for (i = 0; i < N(iwn_bands)-2; i++)
|
||
iwn_read_eeprom_band(sc, &iwn_bands[i]);
|
||
for (; i < N(iwn_bands); i++)
|
||
iwn_read_eeprom_ht40(sc, &iwn_bands[i]);
|
||
ieee80211_sort_channels(ic->ic_channels, ic->ic_nchans);
|
||
#undef N
|
||
}
|
||
|
||
#ifdef IWN_DEBUG
|
||
void
|
||
iwn_print_power_group(struct iwn_softc *sc, int i)
|
||
{
|
||
struct iwn_eeprom_band *band = &sc->bands[i];
|
||
struct iwn_eeprom_chan_samples *chans = band->chans;
|
||
int j, c;
|
||
|
||
printf("===band %d===\n", i);
|
||
printf("chan lo=%d, chan hi=%d\n", band->lo, band->hi);
|
||
printf("chan1 num=%d\n", chans[0].num);
|
||
for (c = 0; c < IWN_NTXCHAINS; c++) {
|
||
for (j = 0; j < IWN_NSAMPLES; j++) {
|
||
printf("chain %d, sample %d: temp=%d gain=%d "
|
||
"power=%d pa_det=%d\n", c, j,
|
||
chans[0].samples[c][j].temp,
|
||
chans[0].samples[c][j].gain,
|
||
chans[0].samples[c][j].power,
|
||
chans[0].samples[c][j].pa_det);
|
||
}
|
||
}
|
||
printf("chan2 num=%d\n", chans[1].num);
|
||
for (c = 0; c < IWN_NTXCHAINS; c++) {
|
||
for (j = 0; j < IWN_NSAMPLES; j++) {
|
||
printf("chain %d, sample %d: temp=%d gain=%d "
|
||
"power=%d pa_det=%d\n", c, j,
|
||
chans[1].samples[c][j].temp,
|
||
chans[1].samples[c][j].gain,
|
||
chans[1].samples[c][j].power,
|
||
chans[1].samples[c][j].pa_det);
|
||
}
|
||
}
|
||
}
|
||
#endif
|
||
|
||
/*
|
||
* Send a command to the firmware.
|
||
*/
|
||
int
|
||
iwn_cmd(struct iwn_softc *sc, int code, const void *buf, int size, int async)
|
||
{
|
||
struct iwn_tx_ring *ring = &sc->txq[4];
|
||
struct iwn_tx_desc *desc;
|
||
struct iwn_tx_cmd *cmd;
|
||
bus_addr_t paddr;
|
||
|
||
IWN_LOCK_ASSERT(sc);
|
||
|
||
KASSERT(size <= sizeof cmd->data, ("Command too big"));
|
||
|
||
desc = &ring->desc[ring->cur];
|
||
cmd = &ring->cmd[ring->cur];
|
||
|
||
cmd->code = code;
|
||
cmd->flags = 0;
|
||
cmd->qid = ring->qid;
|
||
cmd->idx = ring->cur;
|
||
memcpy(cmd->data, buf, size);
|
||
|
||
paddr = ring->cmd_dma.paddr + ring->cur * sizeof (struct iwn_tx_cmd);
|
||
|
||
IWN_SET_DESC_NSEGS(desc, 1);
|
||
IWN_SET_DESC_SEG(desc, 0, paddr, 4 + size);
|
||
sc->shared->len[ring->qid][ring->cur] = htole16(8);
|
||
if (ring->cur < IWN_TX_WINDOW) {
|
||
sc->shared->len[ring->qid][ring->cur + IWN_TX_RING_COUNT] =
|
||
htole16(8);
|
||
}
|
||
|
||
DPRINTF(sc, IWN_DEBUG_CMD, "%s: %s (0x%x) flags %d qid %d idx %d\n",
|
||
__func__, iwn_intr_str(cmd->code), cmd->code,
|
||
cmd->flags, cmd->qid, cmd->idx);
|
||
|
||
/* kick cmd ring */
|
||
ring->cur = (ring->cur + 1) % IWN_TX_RING_COUNT;
|
||
IWN_WRITE(sc, IWN_TX_WIDX, ring->qid << 8 | ring->cur);
|
||
|
||
return async ? 0 : msleep(cmd, &sc->sc_mtx, PCATCH, "iwncmd", hz);
|
||
}
|
||
|
||
static const uint8_t iwn_ridx_to_plcp[] = {
|
||
10, 20, 55, 110, /* CCK */
|
||
0xd, 0xf, 0x5, 0x7, 0x9, 0xb, 0x1, 0x3, 0x3 /* OFDM R1-R4 */
|
||
};
|
||
static const uint8_t iwn_siso_mcs_to_plcp[] = {
|
||
0, 0, 0, 0, /* CCK */
|
||
0, 0, 1, 2, 3, 4, 5, 6, 7 /* HT */
|
||
};
|
||
static const uint8_t iwn_mimo_mcs_to_plcp[] = {
|
||
0, 0, 0, 0, /* CCK */
|
||
8, 8, 9, 10, 11, 12, 13, 14, 15 /* HT */
|
||
};
|
||
static const uint8_t iwn_prev_ridx[] = {
|
||
/* NB: allow fallback from CCK11 to OFDM9 and from OFDM6 to CCK5 */
|
||
0, 0, 1, 5, /* CCK */
|
||
2, 4, 3, 6, 7, 8, 9, 10, 10 /* OFDM */
|
||
};
|
||
|
||
/*
|
||
* Configure hardware link parameters for the specified
|
||
* node operating on the specified channel.
|
||
*/
|
||
int
|
||
iwn_set_link_quality(struct iwn_softc *sc, uint8_t id,
|
||
const struct ieee80211_channel *c, int async)
|
||
{
|
||
struct iwn_cmd_link_quality lq;
|
||
int i, ridx;
|
||
|
||
memset(&lq, 0, sizeof(lq));
|
||
lq.id = id;
|
||
if (IEEE80211_IS_CHAN_HT(c)) {
|
||
lq.mimo = 1;
|
||
lq.ssmask = 0x1;
|
||
} else
|
||
lq.ssmask = 0x2;
|
||
|
||
if (id == IWN_ID_BSS)
|
||
ridx = IWN_RATE_OFDM54;
|
||
else if (IEEE80211_IS_CHAN_A(c))
|
||
ridx = IWN_RATE_OFDM6;
|
||
else
|
||
ridx = IWN_RATE_CCK1;
|
||
for (i = 0; i < IWN_MAX_TX_RETRIES; i++) {
|
||
/* XXX toggle antenna for retry patterns */
|
||
if (IEEE80211_IS_CHAN_HT40(c)) {
|
||
lq.table[i].rate = iwn_mimo_mcs_to_plcp[ridx]
|
||
| IWN_RATE_MCS;
|
||
lq.table[i].rflags = IWN_RFLAG_HT
|
||
| IWN_RFLAG_HT40
|
||
| IWN_RFLAG_ANT_A;
|
||
/* XXX shortGI */
|
||
} else if (IEEE80211_IS_CHAN_HT(c)) {
|
||
lq.table[i].rate = iwn_siso_mcs_to_plcp[ridx]
|
||
| IWN_RATE_MCS;
|
||
lq.table[i].rflags = IWN_RFLAG_HT
|
||
| IWN_RFLAG_ANT_A;
|
||
/* XXX shortGI */
|
||
} else {
|
||
lq.table[i].rate = iwn_ridx_to_plcp[ridx];
|
||
if (ridx <= IWN_RATE_CCK11)
|
||
lq.table[i].rflags = IWN_RFLAG_CCK;
|
||
lq.table[i].rflags |= IWN_RFLAG_ANT_B;
|
||
}
|
||
ridx = iwn_prev_ridx[ridx];
|
||
}
|
||
|
||
lq.dsmask = 0x3;
|
||
lq.ampdu_disable = 3;
|
||
lq.ampdu_limit = htole16(4000);
|
||
#ifdef IWN_DEBUG
|
||
if (sc->sc_debug & IWN_DEBUG_STATE) {
|
||
printf("%s: set link quality for node %d, mimo %d ssmask %d\n",
|
||
__func__, id, lq.mimo, lq.ssmask);
|
||
printf("%s:", __func__);
|
||
for (i = 0; i < IWN_MAX_TX_RETRIES; i++)
|
||
printf(" %d:%x", lq.table[i].rate, lq.table[i].rflags);
|
||
printf("\n");
|
||
}
|
||
#endif
|
||
return iwn_cmd(sc, IWN_CMD_TX_LINK_QUALITY, &lq, sizeof(lq), async);
|
||
}
|
||
|
||
#if 0
|
||
|
||
/*
|
||
* Install a pairwise key into the hardware.
|
||
*/
|
||
int
|
||
iwn_set_key(struct ieee80211com *ic, struct ieee80211_node *ni,
|
||
const struct ieee80211_key *k)
|
||
{
|
||
struct iwn_softc *sc = ic->ic_softc;
|
||
struct iwn_node_info node;
|
||
|
||
if (k->k_flags & IEEE80211_KEY_GROUP)
|
||
return 0;
|
||
|
||
memset(&node, 0, sizeof node);
|
||
|
||
switch (k->k_cipher) {
|
||
case IEEE80211_CIPHER_CCMP:
|
||
node.security = htole16(IWN_CIPHER_CCMP);
|
||
memcpy(node.key, k->k_key, k->k_len);
|
||
break;
|
||
default:
|
||
return 0;
|
||
}
|
||
|
||
node.id = IWN_ID_BSS;
|
||
IEEE80211_ADDR_COPY(node.macaddr, ni->ni_macaddr);
|
||
node.control = IWN_NODE_UPDATE;
|
||
node.flags = IWN_FLAG_SET_KEY;
|
||
|
||
return iwn_cmd(sc, IWN_CMD_ADD_NODE, &node, sizeof node, 1);
|
||
}
|
||
#endif
|
||
|
||
int
|
||
iwn_wme_update(struct ieee80211com *ic)
|
||
{
|
||
#define IWN_EXP2(x) ((1 << (x)) - 1) /* CWmin = 2^ECWmin - 1 */
|
||
#define IWN_TXOP_TO_US(v) (v<<5)
|
||
struct iwn_softc *sc = ic->ic_ifp->if_softc;
|
||
struct iwn_edca_params cmd;
|
||
int i;
|
||
|
||
memset(&cmd, 0, sizeof cmd);
|
||
cmd.flags = htole32(IWN_EDCA_UPDATE);
|
||
for (i = 0; i < WME_NUM_AC; i++) {
|
||
const struct wmeParams *wmep =
|
||
&ic->ic_wme.wme_chanParams.cap_wmeParams[i];
|
||
cmd.ac[i].aifsn = wmep->wmep_aifsn;
|
||
cmd.ac[i].cwmin = htole16(IWN_EXP2(wmep->wmep_logcwmin));
|
||
cmd.ac[i].cwmax = htole16(IWN_EXP2(wmep->wmep_logcwmax));
|
||
cmd.ac[i].txoplimit =
|
||
htole16(IWN_TXOP_TO_US(wmep->wmep_txopLimit));
|
||
}
|
||
IWN_LOCK(sc);
|
||
(void) iwn_cmd(sc, IWN_CMD_EDCA_PARAMS, &cmd, sizeof cmd, 1 /*async*/);
|
||
IWN_UNLOCK(sc);
|
||
return 0;
|
||
#undef IWN_TXOP_TO_US
|
||
#undef IWN_EXP2
|
||
}
|
||
|
||
void
|
||
iwn_set_led(struct iwn_softc *sc, uint8_t which, uint8_t off, uint8_t on)
|
||
{
|
||
struct iwn_cmd_led led;
|
||
|
||
led.which = which;
|
||
led.unit = htole32(100000); /* on/off in unit of 100ms */
|
||
led.off = off;
|
||
led.on = on;
|
||
|
||
(void) iwn_cmd(sc, IWN_CMD_SET_LED, &led, sizeof led, 1);
|
||
}
|
||
|
||
/*
|
||
* Set the critical temperature at which the firmware will automatically stop
|
||
* the radio transmitter.
|
||
*/
|
||
int
|
||
iwn_set_critical_temp(struct iwn_softc *sc)
|
||
{
|
||
struct iwn_ucode_info *uc = &sc->ucode_info;
|
||
struct iwn_critical_temp crit;
|
||
uint32_t r1, r2, r3, temp;
|
||
|
||
r1 = le32toh(uc->temp[0].chan20MHz);
|
||
r2 = le32toh(uc->temp[1].chan20MHz);
|
||
r3 = le32toh(uc->temp[2].chan20MHz);
|
||
/* inverse function of iwn_get_temperature() */
|
||
temp = r2 + (IWN_CTOK(110) * (r3 - r1)) / 259;
|
||
|
||
IWN_WRITE(sc, IWN_UCODE_CLR, IWN_CTEMP_STOP_RF);
|
||
|
||
memset(&crit, 0, sizeof crit);
|
||
crit.tempR = htole32(temp);
|
||
DPRINTF(sc, IWN_DEBUG_RESET, "setting critical temp to %u\n", temp);
|
||
return iwn_cmd(sc, IWN_CMD_SET_CRITICAL_TEMP, &crit, sizeof crit, 0);
|
||
}
|
||
|
||
void
|
||
iwn_enable_tsf(struct iwn_softc *sc, struct ieee80211_node *ni)
|
||
{
|
||
struct iwn_cmd_tsf tsf;
|
||
uint64_t val, mod;
|
||
|
||
memset(&tsf, 0, sizeof tsf);
|
||
memcpy(&tsf.tstamp, ni->ni_tstamp.data, sizeof (uint64_t));
|
||
tsf.bintval = htole16(ni->ni_intval);
|
||
tsf.lintval = htole16(10);
|
||
|
||
/* XXX all wrong */
|
||
/* compute remaining time until next beacon */
|
||
val = (uint64_t)ni->ni_intval * 1024; /* msecs -> usecs */
|
||
DPRINTF(sc, IWN_DEBUG_ANY, "%s: val = %ju %s\n", __func__,
|
||
val, val == 0 ? "correcting" : "");
|
||
if (val == 0)
|
||
val = 1;
|
||
mod = le64toh(tsf.tstamp) % val;
|
||
tsf.binitval = htole32((uint32_t)(val - mod));
|
||
|
||
DPRINTF(sc, IWN_DEBUG_RESET, "TSF bintval=%u tstamp=%ju, init=%u\n",
|
||
ni->ni_intval, le64toh(tsf.tstamp), (uint32_t)(val - mod));
|
||
|
||
if (iwn_cmd(sc, IWN_CMD_TSF, &tsf, sizeof tsf, 1) != 0)
|
||
device_printf(sc->sc_dev,
|
||
"%s: could not enable TSF\n", __func__);
|
||
}
|
||
|
||
void
|
||
iwn_power_calibration(struct iwn_softc *sc, int temp)
|
||
{
|
||
struct ifnet *ifp = sc->sc_ifp;
|
||
struct ieee80211com *ic = ifp->if_l2com;
|
||
#if 0
|
||
KASSERT(ic->ic_state == IEEE80211_S_RUN, ("not running"));
|
||
#endif
|
||
DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s: temperature %d->%d\n",
|
||
__func__, sc->temp, temp);
|
||
|
||
/* adjust Tx power if need be (delta >= 3<>C) */
|
||
if (abs(temp - sc->temp) < 3)
|
||
return;
|
||
|
||
sc->temp = temp;
|
||
|
||
DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s: set Tx power for channel %d\n",
|
||
__func__, ieee80211_chan2ieee(ic, ic->ic_bsschan));
|
||
if (iwn_set_txpower(sc, ic->ic_bsschan, 1) != 0) {
|
||
/* just warn, too bad for the automatic calibration... */
|
||
device_printf(sc->sc_dev,
|
||
"%s: could not adjust Tx power\n", __func__);
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Set Tx power for a given channel (each rate has its own power settings).
|
||
* This function takes into account the regulatory information from EEPROM,
|
||
* the current temperature and the current voltage.
|
||
*/
|
||
int
|
||
iwn_set_txpower(struct iwn_softc *sc, struct ieee80211_channel *ch, int async)
|
||
{
|
||
/* 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(((int)(x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n))
|
||
|
||
static const int tdiv[IWN_NATTEN_GROUPS] = { 9, 8, 8, 8, 6 };
|
||
struct ifnet *ifp = sc->sc_ifp;
|
||
struct ieee80211com *ic = ifp->if_l2com;
|
||
struct iwn_ucode_info *uc = &sc->ucode_info;
|
||
struct iwn_cmd_txpower cmd;
|
||
struct iwn_eeprom_chan_samples *chans;
|
||
const uint8_t *rf_gain, *dsp_gain;
|
||
int32_t vdiff, tdiff;
|
||
int i, c, grp, maxpwr;
|
||
u_int chan;
|
||
|
||
/* get channel number */
|
||
chan = ieee80211_chan2ieee(ic, ch);
|
||
|
||
memset(&cmd, 0, sizeof cmd);
|
||
cmd.band = IEEE80211_IS_CHAN_5GHZ(ch) ? 0 : 1;
|
||
cmd.chan = chan;
|
||
|
||
if (IEEE80211_IS_CHAN_5GHZ(ch)) {
|
||
maxpwr = sc->maxpwr5GHz;
|
||
rf_gain = iwn_rf_gain_5ghz;
|
||
dsp_gain = iwn_dsp_gain_5ghz;
|
||
} else {
|
||
maxpwr = sc->maxpwr2GHz;
|
||
rf_gain = iwn_rf_gain_2ghz;
|
||
dsp_gain = iwn_dsp_gain_2ghz;
|
||
}
|
||
|
||
/* compute voltage compensation */
|
||
vdiff = ((int32_t)le32toh(uc->volt) - sc->eeprom_voltage) / 7;
|
||
if (vdiff > 0)
|
||
vdiff *= 2;
|
||
if (abs(vdiff) > 2)
|
||
vdiff = 0;
|
||
DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_TXPOW,
|
||
"%s: voltage compensation=%d (UCODE=%d, EEPROM=%d)\n",
|
||
__func__, vdiff, le32toh(uc->volt), sc->eeprom_voltage);
|
||
|
||
/* get channel's attenuation group */
|
||
if (chan <= 20) /* 1-20 */
|
||
grp = 4;
|
||
else if (chan <= 43) /* 34-43 */
|
||
grp = 0;
|
||
else if (chan <= 70) /* 44-70 */
|
||
grp = 1;
|
||
else if (chan <= 124) /* 71-124 */
|
||
grp = 2;
|
||
else /* 125-200 */
|
||
grp = 3;
|
||
DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_TXPOW,
|
||
"%s: chan %d, attenuation group=%d\n", __func__, chan, grp);
|
||
|
||
/* get channel's sub-band */
|
||
for (i = 0; i < IWN_NBANDS; i++)
|
||
if (sc->bands[i].lo != 0 &&
|
||
sc->bands[i].lo <= chan && chan <= sc->bands[i].hi)
|
||
break;
|
||
chans = sc->bands[i].chans;
|
||
DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_TXPOW,
|
||
"%s: chan %d sub-band=%d\n", __func__, chan, i);
|
||
|
||
for (c = 0; c < IWN_NTXCHAINS; c++) {
|
||
uint8_t power, gain, temp;
|
||
int maxchpwr, pwr, ridx, idx;
|
||
|
||
power = interpolate(chan,
|
||
chans[0].num, chans[0].samples[c][1].power,
|
||
chans[1].num, chans[1].samples[c][1].power, 1);
|
||
gain = interpolate(chan,
|
||
chans[0].num, chans[0].samples[c][1].gain,
|
||
chans[1].num, chans[1].samples[c][1].gain, 1);
|
||
temp = interpolate(chan,
|
||
chans[0].num, chans[0].samples[c][1].temp,
|
||
chans[1].num, chans[1].samples[c][1].temp, 1);
|
||
DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_TXPOW,
|
||
"%s: Tx chain %d: power=%d gain=%d temp=%d\n",
|
||
__func__, c, power, gain, temp);
|
||
|
||
/* compute temperature compensation */
|
||
tdiff = ((sc->temp - temp) * 2) / tdiv[grp];
|
||
DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_TXPOW,
|
||
"%s: temperature compensation=%d (current=%d, EEPROM=%d)\n",
|
||
__func__, tdiff, sc->temp, temp);
|
||
|
||
for (ridx = 0; ridx <= IWN_RIDX_MAX; ridx++) {
|
||
maxchpwr = ch->ic_maxpower;
|
||
if ((ridx / 8) & 1) {
|
||
/* MIMO: decrease Tx power (-3dB) */
|
||
maxchpwr -= 6;
|
||
}
|
||
|
||
pwr = maxpwr - 10;
|
||
|
||
/* decrease power for highest OFDM rates */
|
||
if ((ridx % 8) == 5) /* 48Mbit/s */
|
||
pwr -= 5;
|
||
else if ((ridx % 8) == 6) /* 54Mbit/s */
|
||
pwr -= 7;
|
||
else if ((ridx % 8) == 7) /* 60Mbit/s */
|
||
pwr -= 10;
|
||
|
||
if (pwr > maxchpwr)
|
||
pwr = maxchpwr;
|
||
|
||
idx = gain - (pwr - power) - tdiff - vdiff;
|
||
if ((ridx / 8) & 1) /* MIMO */
|
||
idx += (int32_t)le32toh(uc->atten[grp][c]);
|
||
|
||
if (cmd.band == 0)
|
||
idx += 9; /* 5GHz */
|
||
if (ridx == IWN_RIDX_MAX)
|
||
idx += 5; /* CCK */
|
||
|
||
/* make sure idx stays in a valid range */
|
||
if (idx < 0)
|
||
idx = 0;
|
||
else if (idx > IWN_MAX_PWR_INDEX)
|
||
idx = IWN_MAX_PWR_INDEX;
|
||
|
||
DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_TXPOW,
|
||
"%s: Tx chain %d, rate idx %d: power=%d\n",
|
||
__func__, c, ridx, idx);
|
||
cmd.power[ridx].rf_gain[c] = rf_gain[idx];
|
||
cmd.power[ridx].dsp_gain[c] = dsp_gain[idx];
|
||
}
|
||
}
|
||
|
||
DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_TXPOW,
|
||
"%s: set tx power for chan %d\n", __func__, chan);
|
||
return iwn_cmd(sc, IWN_CMD_TXPOWER, &cmd, sizeof cmd, async);
|
||
|
||
#undef interpolate
|
||
#undef fdivround
|
||
}
|
||
|
||
/*
|
||
* Get the best (maximum) RSSI among the
|
||
* connected antennas and convert to dBm.
|
||
*/
|
||
int8_t
|
||
iwn_get_rssi(struct iwn_softc *sc, const struct iwn_rx_stat *stat)
|
||
{
|
||
int mask, agc, rssi;
|
||
|
||
mask = (le16toh(stat->antenna) >> 4) & 0x7;
|
||
agc = (le16toh(stat->agc) >> 7) & 0x7f;
|
||
|
||
rssi = 0;
|
||
#if 0
|
||
if (mask & (1 << 0)) /* Ant A */
|
||
rssi = max(rssi, stat->rssi[0]);
|
||
if (mask & (1 << 1)) /* Ant B */
|
||
rssi = max(rssi, stat->rssi[2]);
|
||
if (mask & (1 << 2)) /* Ant C */
|
||
rssi = max(rssi, stat->rssi[4]);
|
||
#else
|
||
rssi = max(rssi, stat->rssi[0]);
|
||
rssi = max(rssi, stat->rssi[2]);
|
||
rssi = max(rssi, stat->rssi[4]);
|
||
#endif
|
||
DPRINTF(sc, IWN_DEBUG_RECV, "%s: agc %d mask 0x%x rssi %d %d %d "
|
||
"result %d\n", __func__, agc, mask,
|
||
stat->rssi[0], stat->rssi[2], stat->rssi[4],
|
||
rssi - agc - IWN_RSSI_TO_DBM);
|
||
return rssi - agc - IWN_RSSI_TO_DBM;
|
||
}
|
||
|
||
/*
|
||
* Get the average noise among Rx antennas (in dBm).
|
||
*/
|
||
int
|
||
iwn_get_noise(const struct iwn_rx_general_stats *stats)
|
||
{
|
||
int i, total, nbant, noise;
|
||
|
||
total = nbant = 0;
|
||
for (i = 0; i < 3; i++) {
|
||
noise = le32toh(stats->noise[i]) & 0xff;
|
||
if (noise != 0) {
|
||
total += noise;
|
||
nbant++;
|
||
}
|
||
}
|
||
/* there should be at least one antenna but check anyway */
|
||
return (nbant == 0) ? -127 : (total / nbant) - 107;
|
||
}
|
||
|
||
/*
|
||
* Read temperature (in degC) from the on-board thermal sensor.
|
||
*/
|
||
int
|
||
iwn_get_temperature(struct iwn_softc *sc)
|
||
{
|
||
struct iwn_ucode_info *uc = &sc->ucode_info;
|
||
int32_t r1, r2, r3, r4, temp;
|
||
|
||
r1 = le32toh(uc->temp[0].chan20MHz);
|
||
r2 = le32toh(uc->temp[1].chan20MHz);
|
||
r3 = le32toh(uc->temp[2].chan20MHz);
|
||
r4 = le32toh(sc->rawtemp);
|
||
|
||
if (r1 == r3) /* prevents division by 0 (should not happen) */
|
||
return 0;
|
||
|
||
/* sign-extend 23-bit R4 value to 32-bit */
|
||
r4 = (r4 << 8) >> 8;
|
||
/* compute temperature */
|
||
temp = (259 * (r4 - r2)) / (r3 - r1);
|
||
temp = (temp * 97) / 100 + 8;
|
||
|
||
return IWN_KTOC(temp);
|
||
}
|
||
|
||
/*
|
||
* Initialize sensitivity calibration state machine.
|
||
*/
|
||
int
|
||
iwn_init_sensitivity(struct iwn_softc *sc)
|
||
{
|
||
struct iwn_calib_state *calib = &sc->calib;
|
||
struct iwn_phy_calib_cmd cmd;
|
||
int error;
|
||
|
||
/* reset calibration state */
|
||
memset(calib, 0, sizeof (*calib));
|
||
calib->state = IWN_CALIB_STATE_INIT;
|
||
calib->cck_state = IWN_CCK_STATE_HIFA;
|
||
/* initial values taken from the reference driver */
|
||
calib->corr_ofdm_x1 = 105;
|
||
calib->corr_ofdm_mrc_x1 = 220;
|
||
calib->corr_ofdm_x4 = 90;
|
||
calib->corr_ofdm_mrc_x4 = 170;
|
||
calib->corr_cck_x4 = 125;
|
||
calib->corr_cck_mrc_x4 = 200;
|
||
calib->energy_cck = 100;
|
||
|
||
/* write initial sensitivity values */
|
||
error = iwn_send_sensitivity(sc);
|
||
if (error != 0)
|
||
return error;
|
||
|
||
memset(&cmd, 0, sizeof cmd);
|
||
cmd.code = IWN_SET_DIFF_GAIN;
|
||
/* differential gains initially set to 0 for all 3 antennas */
|
||
DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s: calibrate phy\n", __func__);
|
||
return iwn_cmd(sc, IWN_PHY_CALIB, &cmd, sizeof cmd, 1);
|
||
}
|
||
|
||
/*
|
||
* Collect noise and RSSI statistics for the first 20 beacons received
|
||
* after association and use them to determine connected antennas and
|
||
* set differential gains.
|
||
*/
|
||
void
|
||
iwn_compute_differential_gain(struct iwn_softc *sc,
|
||
const struct iwn_rx_general_stats *stats)
|
||
{
|
||
struct iwn_calib_state *calib = &sc->calib;
|
||
struct iwn_phy_calib_cmd cmd;
|
||
int i, val;
|
||
|
||
/* accumulate RSSI and noise for all 3 antennas */
|
||
for (i = 0; i < 3; i++) {
|
||
calib->rssi[i] += le32toh(stats->rssi[i]) & 0xff;
|
||
calib->noise[i] += le32toh(stats->noise[i]) & 0xff;
|
||
}
|
||
|
||
/* we update differential gain only once after 20 beacons */
|
||
if (++calib->nbeacons < 20)
|
||
return;
|
||
|
||
/* determine antenna with highest average RSSI */
|
||
val = max(calib->rssi[0], calib->rssi[1]);
|
||
val = max(calib->rssi[2], val);
|
||
|
||
/* determine which antennas are connected */
|
||
sc->antmsk = 0;
|
||
for (i = 0; i < 3; i++)
|
||
if (val - calib->rssi[i] <= 15 * 20)
|
||
sc->antmsk |= 1 << i;
|
||
/* if neither Ant A and Ant B are connected.. */
|
||
if ((sc->antmsk & (1 << 0 | 1 << 1)) == 0)
|
||
sc->antmsk |= 1 << 1; /* ..mark Ant B as connected! */
|
||
|
||
/* get minimal noise among connected antennas */
|
||
val = INT_MAX; /* ok, there's at least one */
|
||
for (i = 0; i < 3; i++)
|
||
if (sc->antmsk & (1 << i))
|
||
val = min(calib->noise[i], val);
|
||
|
||
memset(&cmd, 0, sizeof cmd);
|
||
cmd.code = IWN_SET_DIFF_GAIN;
|
||
/* set differential gains for connected antennas */
|
||
for (i = 0; i < 3; i++) {
|
||
if (sc->antmsk & (1 << i)) {
|
||
cmd.gain[i] = (calib->noise[i] - val) / 30;
|
||
/* limit differential gain to 3 */
|
||
cmd.gain[i] = min(cmd.gain[i], 3);
|
||
cmd.gain[i] |= IWN_GAIN_SET;
|
||
}
|
||
}
|
||
DPRINTF(sc, IWN_DEBUG_CALIBRATE,
|
||
"%s: set differential gains Ant A/B/C: %x/%x/%x (%x)\n",
|
||
__func__,cmd.gain[0], cmd.gain[1], cmd.gain[2], sc->antmsk);
|
||
if (iwn_cmd(sc, IWN_PHY_CALIB, &cmd, sizeof cmd, 1) == 0)
|
||
calib->state = IWN_CALIB_STATE_RUN;
|
||
}
|
||
|
||
/*
|
||
* Tune RF Rx sensitivity based on the number of false alarms detected
|
||
* during the last beacon period.
|
||
*/
|
||
void
|
||
iwn_tune_sensitivity(struct iwn_softc *sc, const struct iwn_rx_stats *stats)
|
||
{
|
||
#define inc_clip(val, inc, max) \
|
||
if ((val) < (max)) { \
|
||
if ((val) < (max) - (inc)) \
|
||
(val) += (inc); \
|
||
else \
|
||
(val) = (max); \
|
||
needs_update = 1; \
|
||
}
|
||
#define dec_clip(val, dec, min) \
|
||
if ((val) > (min)) { \
|
||
if ((val) > (min) + (dec)) \
|
||
(val) -= (dec); \
|
||
else \
|
||
(val) = (min); \
|
||
needs_update = 1; \
|
||
}
|
||
|
||
struct iwn_calib_state *calib = &sc->calib;
|
||
uint32_t val, rxena, fa;
|
||
uint32_t energy[3], energy_min;
|
||
uint8_t noise[3], noise_ref;
|
||
int i, needs_update = 0;
|
||
|
||
/* check that we've been enabled long enough */
|
||
if ((rxena = le32toh(stats->general.load)) == 0)
|
||
return;
|
||
|
||
/* compute number of false alarms since last call for OFDM */
|
||
fa = le32toh(stats->ofdm.bad_plcp) - calib->bad_plcp_ofdm;
|
||
fa += le32toh(stats->ofdm.fa) - calib->fa_ofdm;
|
||
fa *= 200 * 1024; /* 200TU */
|
||
|
||
/* save counters values for next call */
|
||
calib->bad_plcp_ofdm = le32toh(stats->ofdm.bad_plcp);
|
||
calib->fa_ofdm = le32toh(stats->ofdm.fa);
|
||
|
||
if (fa > 50 * rxena) {
|
||
/* high false alarm count, decrease sensitivity */
|
||
DPRINTF(sc, IWN_DEBUG_CALIBRATE,
|
||
"%s: OFDM high false alarm count: %u\n", __func__, fa);
|
||
inc_clip(calib->corr_ofdm_x1, 1, 140);
|
||
inc_clip(calib->corr_ofdm_mrc_x1, 1, 270);
|
||
inc_clip(calib->corr_ofdm_x4, 1, 120);
|
||
inc_clip(calib->corr_ofdm_mrc_x4, 1, 210);
|
||
|
||
} else if (fa < 5 * rxena) {
|
||
/* low false alarm count, increase sensitivity */
|
||
DPRINTF(sc, IWN_DEBUG_CALIBRATE,
|
||
"%s: OFDM low false alarm count: %u\n", __func__, fa);
|
||
dec_clip(calib->corr_ofdm_x1, 1, 105);
|
||
dec_clip(calib->corr_ofdm_mrc_x1, 1, 220);
|
||
dec_clip(calib->corr_ofdm_x4, 1, 85);
|
||
dec_clip(calib->corr_ofdm_mrc_x4, 1, 170);
|
||
}
|
||
|
||
/* compute maximum noise among 3 antennas */
|
||
for (i = 0; i < 3; i++)
|
||
noise[i] = (le32toh(stats->general.noise[i]) >> 8) & 0xff;
|
||
val = max(noise[0], noise[1]);
|
||
val = max(noise[2], val);
|
||
/* insert it into our samples table */
|
||
calib->noise_samples[calib->cur_noise_sample] = val;
|
||
calib->cur_noise_sample = (calib->cur_noise_sample + 1) % 20;
|
||
|
||
/* compute maximum noise among last 20 samples */
|
||
noise_ref = calib->noise_samples[0];
|
||
for (i = 1; i < 20; i++)
|
||
noise_ref = max(noise_ref, calib->noise_samples[i]);
|
||
|
||
/* compute maximum energy among 3 antennas */
|
||
for (i = 0; i < 3; i++)
|
||
energy[i] = le32toh(stats->general.energy[i]);
|
||
val = min(energy[0], energy[1]);
|
||
val = min(energy[2], val);
|
||
/* insert it into our samples table */
|
||
calib->energy_samples[calib->cur_energy_sample] = val;
|
||
calib->cur_energy_sample = (calib->cur_energy_sample + 1) % 10;
|
||
|
||
/* compute minimum energy among last 10 samples */
|
||
energy_min = calib->energy_samples[0];
|
||
for (i = 1; i < 10; i++)
|
||
energy_min = max(energy_min, calib->energy_samples[i]);
|
||
energy_min += 6;
|
||
|
||
/* compute number of false alarms since last call for CCK */
|
||
fa = le32toh(stats->cck.bad_plcp) - calib->bad_plcp_cck;
|
||
fa += le32toh(stats->cck.fa) - calib->fa_cck;
|
||
fa *= 200 * 1024; /* 200TU */
|
||
|
||
/* save counters values for next call */
|
||
calib->bad_plcp_cck = le32toh(stats->cck.bad_plcp);
|
||
calib->fa_cck = le32toh(stats->cck.fa);
|
||
|
||
if (fa > 50 * rxena) {
|
||
/* high false alarm count, decrease sensitivity */
|
||
DPRINTF(sc, IWN_DEBUG_CALIBRATE,
|
||
"%s: CCK high false alarm count: %u\n", __func__, fa);
|
||
calib->cck_state = IWN_CCK_STATE_HIFA;
|
||
calib->low_fa = 0;
|
||
|
||
if (calib->corr_cck_x4 > 160) {
|
||
calib->noise_ref = noise_ref;
|
||
if (calib->energy_cck > 2)
|
||
dec_clip(calib->energy_cck, 2, energy_min);
|
||
}
|
||
if (calib->corr_cck_x4 < 160) {
|
||
calib->corr_cck_x4 = 161;
|
||
needs_update = 1;
|
||
} else
|
||
inc_clip(calib->corr_cck_x4, 3, 200);
|
||
|
||
inc_clip(calib->corr_cck_mrc_x4, 3, 400);
|
||
|
||
} else if (fa < 5 * rxena) {
|
||
/* low false alarm count, increase sensitivity */
|
||
DPRINTF(sc, IWN_DEBUG_CALIBRATE,
|
||
"%s: CCK low false alarm count: %u\n", __func__, fa);
|
||
calib->cck_state = IWN_CCK_STATE_LOFA;
|
||
calib->low_fa++;
|
||
|
||
if (calib->cck_state != 0 &&
|
||
((calib->noise_ref - noise_ref) > 2 ||
|
||
calib->low_fa > 100)) {
|
||
inc_clip(calib->energy_cck, 2, 97);
|
||
dec_clip(calib->corr_cck_x4, 3, 125);
|
||
dec_clip(calib->corr_cck_mrc_x4, 3, 200);
|
||
}
|
||
} else {
|
||
/* not worth to increase or decrease sensitivity */
|
||
DPRINTF(sc, IWN_DEBUG_CALIBRATE,
|
||
"%s: CCK normal false alarm count: %u\n", __func__, fa);
|
||
calib->low_fa = 0;
|
||
calib->noise_ref = noise_ref;
|
||
|
||
if (calib->cck_state == IWN_CCK_STATE_HIFA) {
|
||
/* previous interval had many false alarms */
|
||
dec_clip(calib->energy_cck, 8, energy_min);
|
||
}
|
||
calib->cck_state = IWN_CCK_STATE_INIT;
|
||
}
|
||
|
||
if (needs_update)
|
||
(void)iwn_send_sensitivity(sc);
|
||
#undef dec_clip
|
||
#undef inc_clip
|
||
}
|
||
|
||
int
|
||
iwn_send_sensitivity(struct iwn_softc *sc)
|
||
{
|
||
struct iwn_calib_state *calib = &sc->calib;
|
||
struct iwn_sensitivity_cmd cmd;
|
||
|
||
memset(&cmd, 0, sizeof cmd);
|
||
cmd.which = IWN_SENSITIVITY_WORKTBL;
|
||
/* OFDM modulation */
|
||
cmd.corr_ofdm_x1 = htole16(calib->corr_ofdm_x1);
|
||
cmd.corr_ofdm_mrc_x1 = htole16(calib->corr_ofdm_mrc_x1);
|
||
cmd.corr_ofdm_x4 = htole16(calib->corr_ofdm_x4);
|
||
cmd.corr_ofdm_mrc_x4 = htole16(calib->corr_ofdm_mrc_x4);
|
||
cmd.energy_ofdm = htole16(100);
|
||
cmd.energy_ofdm_th = htole16(62);
|
||
/* CCK modulation */
|
||
cmd.corr_cck_x4 = htole16(calib->corr_cck_x4);
|
||
cmd.corr_cck_mrc_x4 = htole16(calib->corr_cck_mrc_x4);
|
||
cmd.energy_cck = htole16(calib->energy_cck);
|
||
/* Barker modulation: use default values */
|
||
cmd.corr_barker = htole16(190);
|
||
cmd.corr_barker_mrc = htole16(390);
|
||
|
||
DPRINTF(sc, IWN_DEBUG_RESET,
|
||
"%s: set sensitivity %d/%d/%d/%d/%d/%d/%d\n", __func__,
|
||
calib->corr_ofdm_x1, calib->corr_ofdm_mrc_x1, calib->corr_ofdm_x4,
|
||
calib->corr_ofdm_mrc_x4, calib->corr_cck_x4,
|
||
calib->corr_cck_mrc_x4, calib->energy_cck);
|
||
return iwn_cmd(sc, IWN_SENSITIVITY, &cmd, sizeof cmd, 1);
|
||
}
|
||
|
||
int
|
||
iwn_auth(struct iwn_softc *sc)
|
||
{
|
||
struct ifnet *ifp = sc->sc_ifp;
|
||
struct ieee80211com *ic = ifp->if_l2com;
|
||
struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); /*XXX*/
|
||
struct ieee80211_node *ni = vap->iv_bss;
|
||
struct iwn_node_info node;
|
||
int error;
|
||
|
||
sc->calib.state = IWN_CALIB_STATE_INIT;
|
||
|
||
/* update adapter's configuration */
|
||
sc->config.associd = 0;
|
||
IEEE80211_ADDR_COPY(sc->config.bssid, ni->ni_bssid);
|
||
sc->config.chan = htole16(ieee80211_chan2ieee(ic, ni->ni_chan));
|
||
sc->config.flags = htole32(IWN_CONFIG_TSF);
|
||
if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan))
|
||
sc->config.flags |= htole32(IWN_CONFIG_AUTO | IWN_CONFIG_24GHZ);
|
||
if (IEEE80211_IS_CHAN_A(ni->ni_chan)) {
|
||
sc->config.cck_mask = 0;
|
||
sc->config.ofdm_mask = 0x15;
|
||
} else if (IEEE80211_IS_CHAN_B(ni->ni_chan)) {
|
||
sc->config.cck_mask = 0x03;
|
||
sc->config.ofdm_mask = 0;
|
||
} else {
|
||
/* XXX assume 802.11b/g */
|
||
sc->config.cck_mask = 0x0f;
|
||
sc->config.ofdm_mask = 0x15;
|
||
}
|
||
if (ic->ic_flags & IEEE80211_F_SHSLOT)
|
||
sc->config.flags |= htole32(IWN_CONFIG_SHSLOT);
|
||
if (ic->ic_flags & IEEE80211_F_SHPREAMBLE)
|
||
sc->config.flags |= htole32(IWN_CONFIG_SHPREAMBLE);
|
||
sc->config.filter &= ~htole32(IWN_FILTER_BSS);
|
||
|
||
DPRINTF(sc, IWN_DEBUG_STATE,
|
||
"%s: config chan %d mode %d flags 0x%x cck 0x%x ofdm 0x%x "
|
||
"ht_single 0x%x ht_dual 0x%x rxchain 0x%x "
|
||
"myaddr %6D wlap %6D bssid %6D associd %d filter 0x%x\n",
|
||
__func__,
|
||
le16toh(sc->config.chan), sc->config.mode, le32toh(sc->config.flags),
|
||
sc->config.cck_mask, sc->config.ofdm_mask,
|
||
sc->config.ht_single_mask, sc->config.ht_dual_mask,
|
||
le16toh(sc->config.rxchain),
|
||
sc->config.myaddr, ":", sc->config.wlap, ":", sc->config.bssid, ":",
|
||
le16toh(sc->config.associd), le32toh(sc->config.filter));
|
||
error = iwn_cmd(sc, IWN_CMD_CONFIGURE, &sc->config,
|
||
sizeof (struct iwn_config), 1);
|
||
if (error != 0) {
|
||
device_printf(sc->sc_dev,
|
||
"%s: could not configure, error %d\n", __func__, error);
|
||
return error;
|
||
}
|
||
sc->sc_curchan = ic->ic_curchan;
|
||
|
||
/* configuration has changed, set Tx power accordingly */
|
||
error = iwn_set_txpower(sc, ni->ni_chan, 1);
|
||
if (error != 0) {
|
||
device_printf(sc->sc_dev,
|
||
"%s: could not set Tx power, error %d\n", __func__, error);
|
||
return error;
|
||
}
|
||
|
||
/*
|
||
* Reconfiguring clears the adapter's nodes table so we must
|
||
* add the broadcast node again.
|
||
*/
|
||
memset(&node, 0, sizeof node);
|
||
IEEE80211_ADDR_COPY(node.macaddr, ifp->if_broadcastaddr);
|
||
node.id = IWN_ID_BROADCAST;
|
||
DPRINTF(sc, IWN_DEBUG_STATE, "%s: add broadcast node\n", __func__);
|
||
error = iwn_cmd(sc, IWN_CMD_ADD_NODE, &node, sizeof node, 1);
|
||
if (error != 0) {
|
||
device_printf(sc->sc_dev,
|
||
"%s: could not add broadcast node, error %d\n",
|
||
__func__, error);
|
||
return error;
|
||
}
|
||
error = iwn_set_link_quality(sc, node.id, ic->ic_curchan, 1);
|
||
if (error != 0) {
|
||
device_printf(sc->sc_dev,
|
||
"%s: could not setup MRR for broadcast node, error %d\n",
|
||
__func__, error);
|
||
return error;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
/*
|
||
* Configure the adapter for associated state.
|
||
*/
|
||
int
|
||
iwn_run(struct iwn_softc *sc)
|
||
{
|
||
#define MS(v,x) (((v) & x) >> x##_S)
|
||
struct ifnet *ifp = sc->sc_ifp;
|
||
struct ieee80211com *ic = ifp->if_l2com;
|
||
struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); /*XXX*/
|
||
struct ieee80211_node *ni = vap->iv_bss;
|
||
struct iwn_node_info node;
|
||
int error, maxrxampdu, ampdudensity;
|
||
|
||
sc->calib.state = IWN_CALIB_STATE_INIT;
|
||
|
||
if (ic->ic_opmode == IEEE80211_M_MONITOR) {
|
||
/* link LED blinks while monitoring */
|
||
iwn_set_led(sc, IWN_LED_LINK, 5, 5);
|
||
return 0;
|
||
}
|
||
|
||
iwn_enable_tsf(sc, ni);
|
||
|
||
/* update adapter's configuration */
|
||
sc->config.associd = htole16(IEEE80211_AID(ni->ni_associd));
|
||
/* short preamble/slot time are negotiated when associating */
|
||
sc->config.flags &= ~htole32(IWN_CONFIG_SHPREAMBLE | IWN_CONFIG_SHSLOT);
|
||
if (ic->ic_flags & IEEE80211_F_SHSLOT)
|
||
sc->config.flags |= htole32(IWN_CONFIG_SHSLOT);
|
||
if (ic->ic_flags & IEEE80211_F_SHPREAMBLE)
|
||
sc->config.flags |= htole32(IWN_CONFIG_SHPREAMBLE);
|
||
if (IEEE80211_IS_CHAN_HT(ni->ni_chan)) {
|
||
sc->config.flags &= ~htole32(IWN_CONFIG_HT);
|
||
if (IEEE80211_IS_CHAN_HT40U(ni->ni_chan))
|
||
sc->config.flags |= htole32(IWN_CONFIG_HT40U);
|
||
else if (IEEE80211_IS_CHAN_HT40D(ni->ni_chan))
|
||
sc->config.flags |= htole32(IWN_CONFIG_HT40D);
|
||
else
|
||
sc->config.flags |= htole32(IWN_CONFIG_HT20);
|
||
sc->config.rxchain = htole16(
|
||
(3 << IWN_RXCHAIN_VALID_S)
|
||
| (3 << IWN_RXCHAIN_MIMO_CNT_S)
|
||
| (1 << IWN_RXCHAIN_CNT_S)
|
||
| IWN_RXCHAIN_MIMO_FORCE);
|
||
|
||
maxrxampdu = MS(ni->ni_htparam, IEEE80211_HTCAP_MAXRXAMPDU);
|
||
ampdudensity = MS(ni->ni_htparam, IEEE80211_HTCAP_MPDUDENSITY);
|
||
} else
|
||
maxrxampdu = ampdudensity = 0;
|
||
sc->config.filter |= htole32(IWN_FILTER_BSS);
|
||
|
||
DPRINTF(sc, IWN_DEBUG_STATE,
|
||
"%s: config chan %d mode %d flags 0x%x cck 0x%x ofdm 0x%x "
|
||
"ht_single 0x%x ht_dual 0x%x rxchain 0x%x "
|
||
"myaddr %6D wlap %6D bssid %6D associd %d filter 0x%x\n",
|
||
__func__,
|
||
le16toh(sc->config.chan), sc->config.mode, le32toh(sc->config.flags),
|
||
sc->config.cck_mask, sc->config.ofdm_mask,
|
||
sc->config.ht_single_mask, sc->config.ht_dual_mask,
|
||
le16toh(sc->config.rxchain),
|
||
sc->config.myaddr, ":", sc->config.wlap, ":", sc->config.bssid, ":",
|
||
le16toh(sc->config.associd), le32toh(sc->config.filter));
|
||
error = iwn_cmd(sc, IWN_CMD_CONFIGURE, &sc->config,
|
||
sizeof (struct iwn_config), 1);
|
||
if (error != 0) {
|
||
device_printf(sc->sc_dev,
|
||
"%s: could not update configuration, error %d\n",
|
||
__func__, error);
|
||
return error;
|
||
}
|
||
sc->sc_curchan = ni->ni_chan;
|
||
|
||
/* configuration has changed, set Tx power accordingly */
|
||
error = iwn_set_txpower(sc, ni->ni_chan, 1);
|
||
if (error != 0) {
|
||
device_printf(sc->sc_dev,
|
||
"%s: could not set Tx power, error %d\n", __func__, error);
|
||
return error;
|
||
}
|
||
|
||
/* add BSS node */
|
||
memset(&node, 0, sizeof node);
|
||
IEEE80211_ADDR_COPY(node.macaddr, ni->ni_macaddr);
|
||
node.id = IWN_ID_BSS;
|
||
node.htflags = htole32(
|
||
(maxrxampdu << IWN_MAXRXAMPDU_S) |
|
||
(ampdudensity << IWN_MPDUDENSITY_S));
|
||
DPRINTF(sc, IWN_DEBUG_STATE, "%s: add BSS node, id %d htflags 0x%x\n",
|
||
__func__, node.id, le32toh(node.htflags));
|
||
error = iwn_cmd(sc, IWN_CMD_ADD_NODE, &node, sizeof node, 1);
|
||
if (error != 0) {
|
||
device_printf(sc->sc_dev,"could not add BSS node\n");
|
||
return error;
|
||
}
|
||
error = iwn_set_link_quality(sc, node.id, ni->ni_chan, 1);
|
||
if (error != 0) {
|
||
device_printf(sc->sc_dev,
|
||
"%s: could not setup MRR for node %d, error %d\n",
|
||
__func__, node.id, error);
|
||
return error;
|
||
}
|
||
|
||
error = iwn_init_sensitivity(sc);
|
||
if (error != 0) {
|
||
device_printf(sc->sc_dev,
|
||
"%s: could not set sensitivity, error %d\n",
|
||
__func__, error);
|
||
return error;
|
||
}
|
||
|
||
/* start/restart periodic calibration timer */
|
||
sc->calib.state = IWN_CALIB_STATE_ASSOC;
|
||
iwn_calib_reset(sc);
|
||
|
||
/* link LED always on while associated */
|
||
iwn_set_led(sc, IWN_LED_LINK, 0, 1);
|
||
|
||
return 0;
|
||
#undef MS
|
||
}
|
||
|
||
/*
|
||
* Send a scan request to the firmware. Since this command is huge, we map it
|
||
* into a mbuf instead of using the pre-allocated set of commands.
|
||
*/
|
||
int
|
||
iwn_scan(struct iwn_softc *sc)
|
||
{
|
||
struct ifnet *ifp = sc->sc_ifp;
|
||
struct ieee80211com *ic = ifp->if_l2com;
|
||
struct ieee80211_scan_state *ss = ic->ic_scan; /*XXX*/
|
||
struct iwn_tx_ring *ring = &sc->txq[4];
|
||
struct iwn_tx_desc *desc;
|
||
struct iwn_tx_data *data;
|
||
struct iwn_tx_cmd *cmd;
|
||
struct iwn_cmd_data *tx;
|
||
struct iwn_scan_hdr *hdr;
|
||
struct iwn_scan_essid *essid;
|
||
struct iwn_scan_chan *chan;
|
||
struct ieee80211_frame *wh;
|
||
struct ieee80211_rateset *rs;
|
||
struct ieee80211_channel *c;
|
||
enum ieee80211_phymode mode;
|
||
uint8_t *frm;
|
||
int pktlen, error, nrates;
|
||
bus_addr_t physaddr;
|
||
|
||
desc = &ring->desc[ring->cur];
|
||
data = &ring->data[ring->cur];
|
||
|
||
/* XXX malloc */
|
||
data->m = m_getcl(M_DONTWAIT, MT_DATA, 0);
|
||
if (data->m == NULL) {
|
||
device_printf(sc->sc_dev,
|
||
"%s: could not allocate mbuf for scan command\n", __func__);
|
||
return ENOMEM;
|
||
}
|
||
|
||
cmd = mtod(data->m, struct iwn_tx_cmd *);
|
||
cmd->code = IWN_CMD_SCAN;
|
||
cmd->flags = 0;
|
||
cmd->qid = ring->qid;
|
||
cmd->idx = ring->cur;
|
||
|
||
hdr = (struct iwn_scan_hdr *)cmd->data;
|
||
memset(hdr, 0, sizeof (struct iwn_scan_hdr));
|
||
|
||
/* XXX use scan state */
|
||
/*
|
||
* Move to the next channel if no packets are received within 5 msecs
|
||
* after sending the probe request (this helps to reduce the duration
|
||
* of active scans).
|
||
*/
|
||
hdr->quiet = htole16(5); /* timeout in milliseconds */
|
||
hdr->plcp_threshold = htole16(1); /* min # of packets */
|
||
|
||
/* select Ant B and Ant C for scanning */
|
||
hdr->rxchain = htole16(0x3e1 | (7 << IWN_RXCHAIN_VALID_S));
|
||
|
||
tx = (struct iwn_cmd_data *)(hdr + 1);
|
||
memset(tx, 0, sizeof (struct iwn_cmd_data));
|
||
tx->flags = htole32(IWN_TX_AUTO_SEQ | 0x200); /* XXX */
|
||
tx->id = IWN_ID_BROADCAST;
|
||
tx->lifetime = htole32(IWN_LIFETIME_INFINITE);
|
||
tx->rflags = IWN_RFLAG_ANT_B;
|
||
|
||
if (IEEE80211_IS_CHAN_A(ic->ic_curchan)) {
|
||
hdr->crc_threshold = htole16(1);
|
||
/* send probe requests at 6Mbps */
|
||
tx->rate = iwn_ridx_to_plcp[IWN_RATE_OFDM6];
|
||
} else {
|
||
hdr->flags = htole32(IWN_CONFIG_24GHZ | IWN_CONFIG_AUTO);
|
||
/* send probe requests at 1Mbps */
|
||
tx->rate = iwn_ridx_to_plcp[IWN_RATE_CCK1];
|
||
tx->rflags |= IWN_RFLAG_CCK;
|
||
}
|
||
|
||
essid = (struct iwn_scan_essid *)(tx + 1);
|
||
memset(essid, 0, 4 * sizeof (struct iwn_scan_essid));
|
||
essid[0].id = IEEE80211_ELEMID_SSID;
|
||
essid[0].len = ss->ss_ssid[0].len;
|
||
memcpy(essid[0].data, ss->ss_ssid[0].ssid, ss->ss_ssid[0].len);
|
||
|
||
/*
|
||
* Build a probe request frame. Most of the following code is a
|
||
* copy & paste of what is done in net80211.
|
||
*/
|
||
wh = (struct ieee80211_frame *)&essid[4];
|
||
wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT |
|
||
IEEE80211_FC0_SUBTYPE_PROBE_REQ;
|
||
wh->i_fc[1] = IEEE80211_FC1_DIR_NODS;
|
||
IEEE80211_ADDR_COPY(wh->i_addr1, ifp->if_broadcastaddr);
|
||
IEEE80211_ADDR_COPY(wh->i_addr2, ic->ic_myaddr);
|
||
IEEE80211_ADDR_COPY(wh->i_addr3, ifp->if_broadcastaddr);
|
||
*(u_int16_t *)&wh->i_dur[0] = 0; /* filled by h/w */
|
||
*(u_int16_t *)&wh->i_seq[0] = 0; /* filled by h/w */
|
||
|
||
frm = (uint8_t *)(wh + 1);
|
||
|
||
/* add SSID IE */
|
||
*frm++ = IEEE80211_ELEMID_SSID;
|
||
*frm++ = ss->ss_ssid[0].len;
|
||
memcpy(frm, ss->ss_ssid[0].ssid, ss->ss_ssid[0].len);
|
||
frm += ss->ss_ssid[0].len;
|
||
|
||
mode = ieee80211_chan2mode(ic->ic_curchan);
|
||
rs = &ic->ic_sup_rates[mode];
|
||
|
||
/* add supported rates IE */
|
||
*frm++ = IEEE80211_ELEMID_RATES;
|
||
nrates = rs->rs_nrates;
|
||
if (nrates > IEEE80211_RATE_SIZE)
|
||
nrates = IEEE80211_RATE_SIZE;
|
||
*frm++ = nrates;
|
||
memcpy(frm, rs->rs_rates, nrates);
|
||
frm += nrates;
|
||
|
||
/* add supported xrates IE */
|
||
if (rs->rs_nrates > IEEE80211_RATE_SIZE) {
|
||
nrates = rs->rs_nrates - IEEE80211_RATE_SIZE;
|
||
*frm++ = IEEE80211_ELEMID_XRATES;
|
||
*frm++ = (uint8_t)nrates;
|
||
memcpy(frm, rs->rs_rates + IEEE80211_RATE_SIZE, nrates);
|
||
frm += nrates;
|
||
}
|
||
|
||
/* setup length of probe request */
|
||
tx->len = htole16(frm - (uint8_t *)wh);
|
||
|
||
c = ic->ic_curchan;
|
||
chan = (struct iwn_scan_chan *)frm;
|
||
chan->chan = ieee80211_chan2ieee(ic, c);
|
||
chan->flags = 0;
|
||
if ((c->ic_flags & IEEE80211_CHAN_PASSIVE) == 0) {
|
||
chan->flags |= IWN_CHAN_ACTIVE;
|
||
if (ss->ss_nssid > 0)
|
||
chan->flags |= IWN_CHAN_DIRECT;
|
||
}
|
||
chan->dsp_gain = 0x6e;
|
||
if (IEEE80211_IS_CHAN_5GHZ(c)) {
|
||
chan->rf_gain = 0x3b;
|
||
chan->active = htole16(10);
|
||
chan->passive = htole16(110);
|
||
} else {
|
||
chan->rf_gain = 0x28;
|
||
chan->active = htole16(20);
|
||
chan->passive = htole16(120);
|
||
}
|
||
|
||
DPRINTF(sc, IWN_DEBUG_STATE, "%s: chan %u flags 0x%x rf_gain 0x%x "
|
||
"dsp_gain 0x%x active 0x%x passive 0x%x\n", __func__,
|
||
chan->chan, chan->flags, chan->rf_gain, chan->dsp_gain,
|
||
chan->active, chan->passive);
|
||
hdr->nchan++;
|
||
chan++;
|
||
|
||
frm += sizeof (struct iwn_scan_chan);
|
||
|
||
hdr->len = htole16(frm - (uint8_t *)hdr);
|
||
pktlen = frm - (uint8_t *)cmd;
|
||
|
||
error = bus_dmamap_load(ring->data_dmat, data->map, cmd, pktlen,
|
||
iwn_dma_map_addr, &physaddr, BUS_DMA_NOWAIT);
|
||
if (error != 0) {
|
||
device_printf(sc->sc_dev,
|
||
"%s: could not map scan command, error %d\n",
|
||
__func__, error);
|
||
m_freem(data->m);
|
||
data->m = NULL;
|
||
return error;
|
||
}
|
||
|
||
IWN_SET_DESC_NSEGS(desc, 1);
|
||
IWN_SET_DESC_SEG(desc, 0, physaddr, pktlen);
|
||
sc->shared->len[ring->qid][ring->cur] = htole16(8);
|
||
if (ring->cur < IWN_TX_WINDOW)
|
||
sc->shared->len[ring->qid][ring->cur + IWN_TX_RING_COUNT] =
|
||
htole16(8);
|
||
|
||
bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
|
||
BUS_DMASYNC_PREWRITE);
|
||
bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE);
|
||
|
||
/* kick cmd ring */
|
||
ring->cur = (ring->cur + 1) % IWN_TX_RING_COUNT;
|
||
IWN_WRITE(sc, IWN_TX_WIDX, ring->qid << 8 | ring->cur);
|
||
|
||
return 0; /* will be notified async. of failure/success */
|
||
}
|
||
|
||
int
|
||
iwn_config(struct iwn_softc *sc)
|
||
{
|
||
struct ifnet *ifp = sc->sc_ifp;
|
||
struct ieee80211com *ic = ifp->if_l2com;
|
||
struct iwn_power power;
|
||
struct iwn_bluetooth bluetooth;
|
||
struct iwn_node_info node;
|
||
int error;
|
||
|
||
/* set power mode */
|
||
memset(&power, 0, sizeof power);
|
||
power.flags = htole16(IWN_POWER_CAM | 0x8);
|
||
DPRINTF(sc, IWN_DEBUG_RESET, "%s: set power mode\n", __func__);
|
||
error = iwn_cmd(sc, IWN_CMD_SET_POWER_MODE, &power, sizeof power, 0);
|
||
if (error != 0) {
|
||
device_printf(sc->sc_dev,
|
||
"%s: could not set power mode, error %d\n",
|
||
__func__, error);
|
||
return error;
|
||
}
|
||
|
||
/* configure bluetooth coexistence */
|
||
memset(&bluetooth, 0, sizeof bluetooth);
|
||
bluetooth.flags = 3;
|
||
bluetooth.lead = 0xaa;
|
||
bluetooth.kill = 1;
|
||
DPRINTF(sc, IWN_DEBUG_RESET, "%s: config bluetooth coexistence\n",
|
||
__func__);
|
||
error = iwn_cmd(sc, IWN_CMD_BLUETOOTH, &bluetooth, sizeof bluetooth,
|
||
0);
|
||
if (error != 0) {
|
||
device_printf(sc->sc_dev,
|
||
"%s: could not configure bluetooth coexistence, error %d\n",
|
||
__func__, error);
|
||
return error;
|
||
}
|
||
|
||
/* configure adapter */
|
||
memset(&sc->config, 0, sizeof (struct iwn_config));
|
||
IEEE80211_ADDR_COPY(sc->config.myaddr, ic->ic_myaddr);
|
||
IEEE80211_ADDR_COPY(sc->config.wlap, ic->ic_myaddr);
|
||
/* set default channel */
|
||
sc->config.chan = htole16(ieee80211_chan2ieee(ic, ic->ic_curchan));
|
||
sc->config.flags = htole32(IWN_CONFIG_TSF);
|
||
if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan))
|
||
sc->config.flags |= htole32(IWN_CONFIG_AUTO | IWN_CONFIG_24GHZ);
|
||
sc->config.filter = 0;
|
||
switch (ic->ic_opmode) {
|
||
case IEEE80211_M_STA:
|
||
sc->config.mode = IWN_MODE_STA;
|
||
sc->config.filter |= htole32(IWN_FILTER_MULTICAST);
|
||
break;
|
||
case IEEE80211_M_IBSS:
|
||
case IEEE80211_M_AHDEMO:
|
||
sc->config.mode = IWN_MODE_IBSS;
|
||
break;
|
||
case IEEE80211_M_HOSTAP:
|
||
sc->config.mode = IWN_MODE_HOSTAP;
|
||
break;
|
||
case IEEE80211_M_MONITOR:
|
||
sc->config.mode = IWN_MODE_MONITOR;
|
||
sc->config.filter |= htole32(IWN_FILTER_MULTICAST |
|
||
IWN_FILTER_CTL | IWN_FILTER_PROMISC);
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
sc->config.cck_mask = 0x0f; /* not yet negotiated */
|
||
sc->config.ofdm_mask = 0xff; /* not yet negotiated */
|
||
sc->config.ht_single_mask = 0xff;
|
||
sc->config.ht_dual_mask = 0xff;
|
||
sc->config.rxchain = htole16(0x2800 | (7 << IWN_RXCHAIN_VALID_S));
|
||
|
||
DPRINTF(sc, IWN_DEBUG_STATE,
|
||
"%s: config chan %d mode %d flags 0x%x cck 0x%x ofdm 0x%x "
|
||
"ht_single 0x%x ht_dual 0x%x rxchain 0x%x "
|
||
"myaddr %6D wlap %6D bssid %6D associd %d filter 0x%x\n",
|
||
__func__,
|
||
le16toh(sc->config.chan), sc->config.mode, le32toh(sc->config.flags),
|
||
sc->config.cck_mask, sc->config.ofdm_mask,
|
||
sc->config.ht_single_mask, sc->config.ht_dual_mask,
|
||
le16toh(sc->config.rxchain),
|
||
sc->config.myaddr, ":", sc->config.wlap, ":", sc->config.bssid, ":",
|
||
le16toh(sc->config.associd), le32toh(sc->config.filter));
|
||
error = iwn_cmd(sc, IWN_CMD_CONFIGURE, &sc->config,
|
||
sizeof (struct iwn_config), 0);
|
||
if (error != 0) {
|
||
device_printf(sc->sc_dev,
|
||
"%s: configure command failed, error %d\n",
|
||
__func__, error);
|
||
return error;
|
||
}
|
||
sc->sc_curchan = ic->ic_curchan;
|
||
|
||
/* configuration has changed, set Tx power accordingly */
|
||
error = iwn_set_txpower(sc, ic->ic_curchan, 0);
|
||
if (error != 0) {
|
||
device_printf(sc->sc_dev,
|
||
"%s: could not set Tx power, error %d\n", __func__, error);
|
||
return error;
|
||
}
|
||
|
||
/* add broadcast node */
|
||
memset(&node, 0, sizeof node);
|
||
IEEE80211_ADDR_COPY(node.macaddr, ic->ic_ifp->if_broadcastaddr);
|
||
node.id = IWN_ID_BROADCAST;
|
||
node.rate = iwn_plcp_signal(2);
|
||
DPRINTF(sc, IWN_DEBUG_RESET, "%s: add broadcast node\n", __func__);
|
||
error = iwn_cmd(sc, IWN_CMD_ADD_NODE, &node, sizeof node, 0);
|
||
if (error != 0) {
|
||
device_printf(sc->sc_dev,
|
||
"%s: could not add broadcast node, error %d\n",
|
||
__func__, error);
|
||
return error;
|
||
}
|
||
error = iwn_set_link_quality(sc, node.id, ic->ic_curchan, 0);
|
||
if (error != 0) {
|
||
device_printf(sc->sc_dev,
|
||
"%s: could not setup MRR for node %d, error %d\n",
|
||
__func__, node.id, error);
|
||
return error;
|
||
}
|
||
|
||
error = iwn_set_critical_temp(sc);
|
||
if (error != 0) {
|
||
device_printf(sc->sc_dev,
|
||
"%s: could not set critical temperature, error %d\n",
|
||
__func__, error);
|
||
return error;
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
/*
|
||
* Do post-alive initialization of the NIC (after firmware upload).
|
||
*/
|
||
void
|
||
iwn_post_alive(struct iwn_softc *sc)
|
||
{
|
||
uint32_t base;
|
||
uint16_t offset;
|
||
int qid;
|
||
|
||
iwn_mem_lock(sc);
|
||
|
||
/* clear SRAM */
|
||
base = iwn_mem_read(sc, IWN_SRAM_BASE);
|
||
for (offset = 0x380; offset < 0x520; offset += 4) {
|
||
IWN_WRITE(sc, IWN_MEM_WADDR, base + offset);
|
||
IWN_WRITE(sc, IWN_MEM_WDATA, 0);
|
||
}
|
||
|
||
/* shared area is aligned on a 1K boundary */
|
||
iwn_mem_write(sc, IWN_SRAM_BASE, sc->shared_dma.paddr >> 10);
|
||
iwn_mem_write(sc, IWN_SELECT_QCHAIN, 0);
|
||
|
||
for (qid = 0; qid < IWN_NTXQUEUES; qid++) {
|
||
iwn_mem_write(sc, IWN_QUEUE_RIDX(qid), 0);
|
||
IWN_WRITE(sc, IWN_TX_WIDX, qid << 8 | 0);
|
||
|
||
/* set sched. window size */
|
||
IWN_WRITE(sc, IWN_MEM_WADDR, base + IWN_QUEUE_OFFSET(qid));
|
||
IWN_WRITE(sc, IWN_MEM_WDATA, 64);
|
||
/* set sched. frame limit */
|
||
IWN_WRITE(sc, IWN_MEM_WADDR, base + IWN_QUEUE_OFFSET(qid) + 4);
|
||
IWN_WRITE(sc, IWN_MEM_WDATA, 10 << 16);
|
||
}
|
||
|
||
/* enable interrupts for all 16 queues */
|
||
iwn_mem_write(sc, IWN_QUEUE_INTR_MASK, 0xffff);
|
||
|
||
/* identify active Tx rings (0-7) */
|
||
iwn_mem_write(sc, IWN_TX_ACTIVE, 0xff);
|
||
|
||
/* mark Tx rings (4 EDCA + cmd + 2 HCCA) as active */
|
||
for (qid = 0; qid < 7; qid++) {
|
||
iwn_mem_write(sc, IWN_TXQ_STATUS(qid),
|
||
IWN_TXQ_STATUS_ACTIVE | qid << 1);
|
||
}
|
||
|
||
iwn_mem_unlock(sc);
|
||
}
|
||
|
||
void
|
||
iwn_stop_master(struct iwn_softc *sc)
|
||
{
|
||
uint32_t tmp;
|
||
int ntries;
|
||
|
||
tmp = IWN_READ(sc, IWN_RESET);
|
||
IWN_WRITE(sc, IWN_RESET, tmp | IWN_STOP_MASTER);
|
||
|
||
tmp = IWN_READ(sc, IWN_GPIO_CTL);
|
||
if ((tmp & IWN_GPIO_PWR_STATUS) == IWN_GPIO_PWR_SLEEP)
|
||
return; /* already asleep */
|
||
|
||
for (ntries = 0; ntries < 100; ntries++) {
|
||
if (IWN_READ(sc, IWN_RESET) & IWN_MASTER_DISABLED)
|
||
break;
|
||
DELAY(10);
|
||
}
|
||
if (ntries == 100)
|
||
device_printf(sc->sc_dev,
|
||
"%s: timeout waiting for master\n", __func__);
|
||
}
|
||
|
||
int
|
||
iwn_reset(struct iwn_softc *sc)
|
||
{
|
||
uint32_t tmp;
|
||
int ntries;
|
||
|
||
/* clear any pending interrupts */
|
||
IWN_WRITE(sc, IWN_INTR, 0xffffffff);
|
||
|
||
tmp = IWN_READ(sc, IWN_CHICKEN);
|
||
IWN_WRITE(sc, IWN_CHICKEN, tmp | IWN_CHICKEN_DISLOS);
|
||
|
||
tmp = IWN_READ(sc, IWN_GPIO_CTL);
|
||
IWN_WRITE(sc, IWN_GPIO_CTL, tmp | IWN_GPIO_INIT);
|
||
|
||
/* wait for clock stabilization */
|
||
for (ntries = 0; ntries < 1000; ntries++) {
|
||
if (IWN_READ(sc, IWN_GPIO_CTL) & IWN_GPIO_CLOCK)
|
||
break;
|
||
DELAY(10);
|
||
}
|
||
if (ntries == 1000) {
|
||
device_printf(sc->sc_dev,
|
||
"%s: timeout waiting for clock stabilization\n", __func__);
|
||
return ETIMEDOUT;
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
void
|
||
iwn_hw_config(struct iwn_softc *sc)
|
||
{
|
||
uint32_t tmp, hw;
|
||
|
||
/* enable interrupts mitigation */
|
||
IWN_WRITE(sc, IWN_INTR_MIT, 512 / 32);
|
||
|
||
/* voodoo from the reference driver */
|
||
tmp = pci_read_config(sc->sc_dev, PCIR_REVID,1);
|
||
if ((tmp & 0x80) && (tmp & 0x7f) < 8) {
|
||
/* enable "no snoop" field */
|
||
tmp = pci_read_config(sc->sc_dev, 0xe8, 1);
|
||
tmp &= ~IWN_DIS_NOSNOOP;
|
||
/* clear device specific PCI configuration register 0x41 */
|
||
pci_write_config(sc->sc_dev, 0xe8, tmp, 1);
|
||
}
|
||
|
||
/* disable L1 entry to work around a hardware bug */
|
||
tmp = pci_read_config(sc->sc_dev, 0xf0, 1);
|
||
tmp &= ~IWN_ENA_L1;
|
||
pci_write_config(sc->sc_dev, 0xf0, tmp, 1 );
|
||
|
||
hw = IWN_READ(sc, IWN_HWCONFIG);
|
||
IWN_WRITE(sc, IWN_HWCONFIG, hw | 0x310);
|
||
|
||
iwn_mem_lock(sc);
|
||
tmp = iwn_mem_read(sc, IWN_MEM_POWER);
|
||
iwn_mem_write(sc, IWN_MEM_POWER, tmp | IWN_POWER_RESET);
|
||
DELAY(5);
|
||
tmp = iwn_mem_read(sc, IWN_MEM_POWER);
|
||
iwn_mem_write(sc, IWN_MEM_POWER, tmp & ~IWN_POWER_RESET);
|
||
iwn_mem_unlock(sc);
|
||
}
|
||
|
||
void
|
||
iwn_init_locked(struct iwn_softc *sc)
|
||
{
|
||
struct ifnet *ifp = sc->sc_ifp;
|
||
uint32_t tmp;
|
||
int error, qid;
|
||
|
||
IWN_LOCK_ASSERT(sc);
|
||
|
||
/* load the firmware */
|
||
if (sc->fw_fp == NULL && (error = iwn_load_firmware(sc)) != 0) {
|
||
device_printf(sc->sc_dev,
|
||
"%s: could not load firmware, error %d\n", __func__, error);
|
||
return;
|
||
}
|
||
|
||
error = iwn_reset(sc);
|
||
if (error != 0) {
|
||
device_printf(sc->sc_dev,
|
||
"%s: could not reset adapter, error %d\n", __func__, error);
|
||
return;
|
||
}
|
||
|
||
iwn_mem_lock(sc);
|
||
iwn_mem_read(sc, IWN_CLOCK_CTL);
|
||
iwn_mem_write(sc, IWN_CLOCK_CTL, 0xa00);
|
||
iwn_mem_read(sc, IWN_CLOCK_CTL);
|
||
iwn_mem_unlock(sc);
|
||
|
||
DELAY(20);
|
||
|
||
iwn_mem_lock(sc);
|
||
tmp = iwn_mem_read(sc, IWN_MEM_PCIDEV);
|
||
iwn_mem_write(sc, IWN_MEM_PCIDEV, tmp | 0x800);
|
||
iwn_mem_unlock(sc);
|
||
|
||
iwn_mem_lock(sc);
|
||
tmp = iwn_mem_read(sc, IWN_MEM_POWER);
|
||
iwn_mem_write(sc, IWN_MEM_POWER, tmp & ~0x03000000);
|
||
iwn_mem_unlock(sc);
|
||
|
||
iwn_hw_config(sc);
|
||
|
||
/* init Rx ring */
|
||
iwn_mem_lock(sc);
|
||
IWN_WRITE(sc, IWN_RX_CONFIG, 0);
|
||
IWN_WRITE(sc, IWN_RX_WIDX, 0);
|
||
/* Rx ring is aligned on a 256-byte boundary */
|
||
IWN_WRITE(sc, IWN_RX_BASE, sc->rxq.desc_dma.paddr >> 8);
|
||
/* shared area is aligned on a 16-byte boundary */
|
||
IWN_WRITE(sc, IWN_RW_WIDX_PTR, (sc->shared_dma.paddr +
|
||
offsetof(struct iwn_shared, closed_count)) >> 4);
|
||
IWN_WRITE(sc, IWN_RX_CONFIG, 0x80601000);
|
||
iwn_mem_unlock(sc);
|
||
|
||
IWN_WRITE(sc, IWN_RX_WIDX, (IWN_RX_RING_COUNT - 1) & ~7);
|
||
|
||
iwn_mem_lock(sc);
|
||
iwn_mem_write(sc, IWN_TX_ACTIVE, 0);
|
||
|
||
/* set physical address of "keep warm" page */
|
||
IWN_WRITE(sc, IWN_KW_BASE, sc->kw_dma.paddr >> 4);
|
||
|
||
/* init Tx rings */
|
||
for (qid = 0; qid < IWN_NTXQUEUES; qid++) {
|
||
struct iwn_tx_ring *txq = &sc->txq[qid];
|
||
IWN_WRITE(sc, IWN_TX_BASE(qid), txq->desc_dma.paddr >> 8);
|
||
IWN_WRITE(sc, IWN_TX_CONFIG(qid), 0x80000008);
|
||
}
|
||
iwn_mem_unlock(sc);
|
||
|
||
/* clear "radio off" and "disable command" bits (reversed logic) */
|
||
IWN_WRITE(sc, IWN_UCODE_CLR, IWN_RADIO_OFF);
|
||
IWN_WRITE(sc, IWN_UCODE_CLR, IWN_DISABLE_CMD);
|
||
|
||
/* clear any pending interrupts */
|
||
IWN_WRITE(sc, IWN_INTR, 0xffffffff);
|
||
/* enable interrupts */
|
||
IWN_WRITE(sc, IWN_MASK, IWN_INTR_MASK);
|
||
|
||
/* not sure why/if this is necessary... */
|
||
IWN_WRITE(sc, IWN_UCODE_CLR, IWN_RADIO_OFF);
|
||
IWN_WRITE(sc, IWN_UCODE_CLR, IWN_RADIO_OFF);
|
||
|
||
/* check that the radio is not disabled by RF switch */
|
||
if (!(IWN_READ(sc, IWN_GPIO_CTL) & IWN_GPIO_RF_ENABLED)) {
|
||
device_printf(sc->sc_dev,
|
||
"radio is disabled by hardware switch\n");
|
||
return;
|
||
}
|
||
|
||
error = iwn_transfer_firmware(sc);
|
||
if (error != 0) {
|
||
device_printf(sc->sc_dev,
|
||
"%s: could not load firmware, error %d\n", __func__, error);
|
||
return;
|
||
}
|
||
|
||
/* firmware has notified us that it is alive.. */
|
||
iwn_post_alive(sc); /* ..do post alive initialization */
|
||
|
||
sc->rawtemp = sc->ucode_info.temp[3].chan20MHz;
|
||
sc->temp = iwn_get_temperature(sc);
|
||
DPRINTF(sc, IWN_DEBUG_RESET, "%s: temperature=%d\n",
|
||
__func__, sc->temp);
|
||
|
||
error = iwn_config(sc);
|
||
if (error != 0) {
|
||
device_printf(sc->sc_dev,
|
||
"%s: could not configure device, error %d\n",
|
||
__func__, error);
|
||
return;
|
||
}
|
||
|
||
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
|
||
ifp->if_drv_flags |= IFF_DRV_RUNNING;
|
||
}
|
||
|
||
void
|
||
iwn_init(void *arg)
|
||
{
|
||
struct iwn_softc *sc = arg;
|
||
struct ifnet *ifp = sc->sc_ifp;
|
||
struct ieee80211com *ic = ifp->if_l2com;
|
||
|
||
IWN_LOCK(sc);
|
||
iwn_init_locked(sc);
|
||
IWN_UNLOCK(sc);
|
||
|
||
if (ifp->if_drv_flags & IFF_DRV_RUNNING)
|
||
ieee80211_start_all(ic);
|
||
}
|
||
|
||
void
|
||
iwn_stop_locked(struct iwn_softc *sc)
|
||
{
|
||
struct ifnet *ifp = sc->sc_ifp;
|
||
uint32_t tmp;
|
||
int i;
|
||
|
||
IWN_LOCK_ASSERT(sc);
|
||
|
||
IWN_WRITE(sc, IWN_RESET, IWN_NEVO_RESET);
|
||
|
||
sc->sc_tx_timer = 0;
|
||
callout_stop(&sc->sc_timer_to);
|
||
ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
|
||
|
||
/* disable interrupts */
|
||
IWN_WRITE(sc, IWN_MASK, 0);
|
||
IWN_WRITE(sc, IWN_INTR, 0xffffffff);
|
||
IWN_WRITE(sc, IWN_INTR_STATUS, 0xffffffff);
|
||
|
||
/* Clear any commands left in the taskq command buffer */
|
||
memset(sc->sc_cmd, 0, sizeof(sc->sc_cmd));
|
||
|
||
/* reset all Tx rings */
|
||
for (i = 0; i < IWN_NTXQUEUES; i++)
|
||
iwn_reset_tx_ring(sc, &sc->txq[i]);
|
||
|
||
/* reset Rx ring */
|
||
iwn_reset_rx_ring(sc, &sc->rxq);
|
||
|
||
iwn_mem_lock(sc);
|
||
iwn_mem_write(sc, IWN_MEM_CLOCK2, 0x200);
|
||
iwn_mem_unlock(sc);
|
||
|
||
DELAY(5);
|
||
iwn_stop_master(sc);
|
||
|
||
tmp = IWN_READ(sc, IWN_RESET);
|
||
IWN_WRITE(sc, IWN_RESET, tmp | IWN_SW_RESET);
|
||
}
|
||
|
||
void
|
||
iwn_stop(struct iwn_softc *sc)
|
||
{
|
||
IWN_LOCK(sc);
|
||
iwn_stop_locked(sc);
|
||
IWN_UNLOCK(sc);
|
||
}
|
||
|
||
/*
|
||
* Callback from net80211 to start a scan.
|
||
*/
|
||
static void
|
||
iwn_scan_start(struct ieee80211com *ic)
|
||
{
|
||
struct ifnet *ifp = ic->ic_ifp;
|
||
struct iwn_softc *sc = ifp->if_softc;
|
||
|
||
iwn_queue_cmd(sc, IWN_SCAN_START, 0, IWN_QUEUE_NORMAL);
|
||
}
|
||
|
||
/*
|
||
* Callback from net80211 to terminate a scan.
|
||
*/
|
||
static void
|
||
iwn_scan_end(struct ieee80211com *ic)
|
||
{
|
||
struct ifnet *ifp = ic->ic_ifp;
|
||
struct iwn_softc *sc = ifp->if_softc;
|
||
|
||
iwn_queue_cmd(sc, IWN_SCAN_STOP, 0, IWN_QUEUE_NORMAL);
|
||
}
|
||
|
||
/*
|
||
* Callback from net80211 to force a channel change.
|
||
*/
|
||
static void
|
||
iwn_set_channel(struct ieee80211com *ic)
|
||
{
|
||
struct ifnet *ifp = ic->ic_ifp;
|
||
struct iwn_softc *sc = ifp->if_softc;
|
||
const struct ieee80211_channel *c = ic->ic_curchan;
|
||
|
||
if (c != sc->sc_curchan) {
|
||
sc->sc_rxtap.wr_chan_freq = htole16(c->ic_freq);
|
||
sc->sc_rxtap.wr_chan_flags = htole16(c->ic_flags);
|
||
sc->sc_txtap.wt_chan_freq = htole16(c->ic_freq);
|
||
sc->sc_txtap.wt_chan_flags = htole16(c->ic_flags);
|
||
iwn_queue_cmd(sc, IWN_SET_CHAN, 0, IWN_QUEUE_NORMAL);
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Callback from net80211 to start scanning of the current channel.
|
||
*/
|
||
static void
|
||
iwn_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell)
|
||
{
|
||
struct ieee80211vap *vap = ss->ss_vap;
|
||
struct iwn_softc *sc = vap->iv_ic->ic_ifp->if_softc;
|
||
|
||
iwn_queue_cmd(sc, IWN_SCAN_CURCHAN, 0, IWN_QUEUE_NORMAL);
|
||
}
|
||
|
||
/*
|
||
* Callback from net80211 to handle the minimum dwell time being met.
|
||
* The intent is to terminate the scan but we just let the firmware
|
||
* notify us when it's finished as we have no safe way to abort it.
|
||
*/
|
||
static void
|
||
iwn_scan_mindwell(struct ieee80211_scan_state *ss)
|
||
{
|
||
/* NB: don't try to abort scan; wait for firmware to finish */
|
||
}
|
||
|
||
/*
|
||
* Carry out work in the taskq context.
|
||
*/
|
||
static void
|
||
iwn_ops(void *arg0, int pending)
|
||
{
|
||
struct iwn_softc *sc = arg0;
|
||
struct ifnet *ifp = sc->sc_ifp;
|
||
struct ieee80211com *ic = ifp->if_l2com;
|
||
struct ieee80211vap *vap;
|
||
int cmd, arg, error;
|
||
enum ieee80211_state nstate;
|
||
|
||
for (;;) {
|
||
IWN_CMD_LOCK(sc);
|
||
cmd = sc->sc_cmd[sc->sc_cmd_cur];
|
||
if (cmd == 0) {
|
||
/* No more commands to process */
|
||
IWN_CMD_UNLOCK(sc);
|
||
return;
|
||
}
|
||
if ((sc->sc_ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 &&
|
||
cmd != IWN_RADIO_ENABLE ) {
|
||
IWN_CMD_UNLOCK(sc);
|
||
return;
|
||
}
|
||
arg = sc->sc_cmd_arg[sc->sc_cmd_cur];
|
||
sc->sc_cmd[sc->sc_cmd_cur] = 0; /* free the slot */
|
||
sc->sc_cmd_cur = (sc->sc_cmd_cur + 1) % IWN_CMD_MAXOPS;
|
||
IWN_CMD_UNLOCK(sc);
|
||
|
||
IWN_LOCK(sc); /* NB: sync debug printfs on smp */
|
||
DPRINTF(sc, IWN_DEBUG_OPS, "%s: %s (cmd 0x%x)\n",
|
||
__func__, iwn_ops_str(cmd), cmd);
|
||
|
||
vap = TAILQ_FIRST(&ic->ic_vaps); /* XXX */
|
||
switch (cmd) {
|
||
case IWN_SCAN_START:
|
||
/* make the link LED blink while we're scanning */
|
||
iwn_set_led(sc, IWN_LED_LINK, 20, 2);
|
||
break;
|
||
case IWN_SCAN_STOP:
|
||
break;
|
||
case IWN_SCAN_NEXT:
|
||
ieee80211_scan_next(vap);
|
||
break;
|
||
case IWN_SCAN_CURCHAN:
|
||
error = iwn_scan(sc);
|
||
if (error != 0) {
|
||
IWN_UNLOCK(sc);
|
||
ieee80211_cancel_scan(vap);
|
||
IWN_LOCK(sc);
|
||
return;
|
||
}
|
||
break;
|
||
case IWN_SET_CHAN:
|
||
error = iwn_config(sc);
|
||
if (error != 0) {
|
||
DPRINTF(sc, IWN_DEBUG_STATE,
|
||
"%s: set chan failed, cancel scan\n",
|
||
__func__);
|
||
IWN_UNLOCK(sc);
|
||
//XXX Handle failed scan correctly
|
||
ieee80211_cancel_scan(vap);
|
||
return;
|
||
}
|
||
break;
|
||
case IWN_AUTH:
|
||
case IWN_RUN:
|
||
if (cmd == IWN_AUTH) {
|
||
error = iwn_auth(sc);
|
||
nstate = IEEE80211_S_AUTH;
|
||
} else {
|
||
error = iwn_run(sc);
|
||
nstate = IEEE80211_S_RUN;
|
||
}
|
||
if (error == 0) {
|
||
IWN_UNLOCK(sc);
|
||
IEEE80211_LOCK(ic);
|
||
IWN_VAP(vap)->iv_newstate(vap, nstate, arg);
|
||
if (vap->iv_newstate_cb != NULL)
|
||
vap->iv_newstate_cb(vap, nstate, arg);
|
||
IEEE80211_UNLOCK(ic);
|
||
IWN_LOCK(sc);
|
||
} else {
|
||
device_printf(sc->sc_dev,
|
||
"%s: %s state change failed, error %d\n",
|
||
__func__, ieee80211_state_name[nstate],
|
||
error);
|
||
}
|
||
break;
|
||
case IWN_REINIT:
|
||
IWN_UNLOCK(sc);
|
||
iwn_init(sc);
|
||
IWN_LOCK(sc);
|
||
ieee80211_notify_radio(ic, 1);
|
||
break;
|
||
case IWN_RADIO_ENABLE:
|
||
KASSERT(sc->fw_fp != NULL,
|
||
("Fware Not Loaded, can't load from tq"));
|
||
IWN_UNLOCK(sc);
|
||
iwn_init(sc);
|
||
IWN_LOCK(sc);
|
||
break;
|
||
case IWN_RADIO_DISABLE:
|
||
ieee80211_notify_radio(ic, 0);
|
||
iwn_stop_locked(sc);
|
||
break;
|
||
}
|
||
IWN_UNLOCK(sc);
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Queue a command for execution in the taskq thread.
|
||
* This is needed as the net80211 callbacks do not allow
|
||
* sleeping, since we need to sleep to confirm commands have
|
||
* been processed by the firmware, we must defer execution to
|
||
* a sleep enabled thread.
|
||
*/
|
||
static int
|
||
iwn_queue_cmd(struct iwn_softc *sc, int cmd, int arg, int clear)
|
||
{
|
||
IWN_CMD_LOCK(sc);
|
||
if (clear) {
|
||
sc->sc_cmd[0] = cmd;
|
||
sc->sc_cmd_arg[0] = arg;
|
||
sc->sc_cmd_cur = 0;
|
||
sc->sc_cmd_next = 1;
|
||
} else {
|
||
if (sc->sc_cmd[sc->sc_cmd_next] != 0) {
|
||
IWN_CMD_UNLOCK(sc);
|
||
DPRINTF(sc, IWN_DEBUG_ANY, "%s: command %d dropped\n",
|
||
__func__, cmd);
|
||
return EBUSY;
|
||
}
|
||
sc->sc_cmd[sc->sc_cmd_next] = cmd;
|
||
sc->sc_cmd_arg[sc->sc_cmd_next] = arg;
|
||
sc->sc_cmd_next = (sc->sc_cmd_next + 1) % IWN_CMD_MAXOPS;
|
||
}
|
||
taskqueue_enqueue(sc->sc_tq, &sc->sc_ops_task);
|
||
IWN_CMD_UNLOCK(sc);
|
||
return 0;
|
||
}
|
||
|
||
static void
|
||
iwn_bpfattach(struct iwn_softc *sc)
|
||
{
|
||
struct ifnet *ifp = sc->sc_ifp;
|
||
|
||
bpfattach(ifp, DLT_IEEE802_11_RADIO,
|
||
sizeof (struct ieee80211_frame) + sizeof (sc->sc_txtap));
|
||
|
||
sc->sc_rxtap_len = sizeof sc->sc_rxtap;
|
||
sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len);
|
||
sc->sc_rxtap.wr_ihdr.it_present = htole32(IWN_RX_RADIOTAP_PRESENT);
|
||
|
||
sc->sc_txtap_len = sizeof sc->sc_txtap;
|
||
sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len);
|
||
sc->sc_txtap.wt_ihdr.it_present = htole32(IWN_TX_RADIOTAP_PRESENT);
|
||
}
|
||
|
||
static void
|
||
iwn_sysctlattach(struct iwn_softc *sc)
|
||
{
|
||
struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev);
|
||
struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev);
|
||
|
||
#ifdef IWN_DEBUG
|
||
sc->sc_debug = 0;
|
||
SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
|
||
"debug", CTLFLAG_RW, &sc->sc_debug, 0, "control debugging printfs");
|
||
#endif
|
||
}
|
||
|
||
#ifdef IWN_DEBUG
|
||
static const char *
|
||
iwn_ops_str(int cmd)
|
||
{
|
||
switch (cmd) {
|
||
case IWN_SCAN_START: return "SCAN_START";
|
||
case IWN_SCAN_CURCHAN: return "SCAN_CURCHAN";
|
||
case IWN_SCAN_STOP: return "SCAN_STOP";
|
||
case IWN_SET_CHAN: return "SET_CHAN";
|
||
case IWN_AUTH: return "AUTH";
|
||
case IWN_SCAN_NEXT: return "SCAN_NEXT";
|
||
case IWN_RUN: return "RUN";
|
||
case IWN_RADIO_ENABLE: return "RADIO_ENABLE";
|
||
case IWN_RADIO_DISABLE: return "RADIO_DISABLE";
|
||
case IWN_REINIT: return "REINIT";
|
||
}
|
||
return "UNKNOWN COMMAND";
|
||
}
|
||
|
||
static const char *
|
||
iwn_intr_str(uint8_t cmd)
|
||
{
|
||
switch (cmd) {
|
||
/* Notifications */
|
||
case IWN_UC_READY: return "UC_READY";
|
||
case IWN_ADD_NODE_DONE: return "ADD_NODE_DONE";
|
||
case IWN_TX_DONE: return "TX_DONE";
|
||
case IWN_START_SCAN: return "START_SCAN";
|
||
case IWN_STOP_SCAN: return "STOP_SCAN";
|
||
case IWN_RX_STATISTICS: return "RX_STATS";
|
||
case IWN_BEACON_STATISTICS: return "BEACON_STATS";
|
||
case IWN_STATE_CHANGED: return "STATE_CHANGED";
|
||
case IWN_BEACON_MISSED: return "BEACON_MISSED";
|
||
case IWN_AMPDU_RX_START: return "AMPDU_RX_START";
|
||
case IWN_AMPDU_RX_DONE: return "AMPDU_RX_DONE";
|
||
case IWN_RX_DONE: return "RX_DONE";
|
||
|
||
/* Command Notifications */
|
||
case IWN_CMD_CONFIGURE: return "IWN_CMD_CONFIGURE";
|
||
case IWN_CMD_ASSOCIATE: return "IWN_CMD_ASSOCIATE";
|
||
case IWN_CMD_EDCA_PARAMS: return "IWN_CMD_EDCA_PARAMS";
|
||
case IWN_CMD_TSF: return "IWN_CMD_TSF";
|
||
case IWN_CMD_TX_LINK_QUALITY: return "IWN_CMD_TX_LINK_QUALITY";
|
||
case IWN_CMD_SET_LED: return "IWN_CMD_SET_LED";
|
||
case IWN_CMD_SET_POWER_MODE: return "IWN_CMD_SET_POWER_MODE";
|
||
case IWN_CMD_SCAN: return "IWN_CMD_SCAN";
|
||
case IWN_CMD_TXPOWER: return "IWN_CMD_TXPOWER";
|
||
case IWN_CMD_BLUETOOTH: return "IWN_CMD_BLUETOOTH";
|
||
case IWN_CMD_SET_CRITICAL_TEMP: return "IWN_CMD_SET_CRITICAL_TEMP";
|
||
case IWN_SENSITIVITY: return "IWN_SENSITIVITY";
|
||
case IWN_PHY_CALIB: return "IWN_PHY_CALIB";
|
||
}
|
||
return "UNKNOWN INTR NOTIF/CMD";
|
||
}
|
||
#endif /* IWN_DEBUG */
|
||
|
||
static device_method_t iwn_methods[] = {
|
||
/* Device interface */
|
||
DEVMETHOD(device_probe, iwn_probe),
|
||
DEVMETHOD(device_attach, iwn_attach),
|
||
DEVMETHOD(device_detach, iwn_detach),
|
||
DEVMETHOD(device_shutdown, iwn_shutdown),
|
||
DEVMETHOD(device_suspend, iwn_suspend),
|
||
DEVMETHOD(device_resume, iwn_resume),
|
||
|
||
{ 0, 0 }
|
||
};
|
||
|
||
static driver_t iwn_driver = {
|
||
"iwn",
|
||
iwn_methods,
|
||
sizeof (struct iwn_softc)
|
||
};
|
||
static devclass_t iwn_devclass;
|
||
DRIVER_MODULE(iwn, pci, iwn_driver, iwn_devclass, 0, 0);
|
||
MODULE_DEPEND(iwn, pci, 1, 1, 1);
|
||
MODULE_DEPEND(iwn, firmware, 1, 1, 1);
|
||
MODULE_DEPEND(iwn, wlan, 1, 1, 1);
|
||
MODULE_DEPEND(iwn, wlan_amrr, 1, 1, 1);
|