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freebsd-skq/sys/dev/iwn/if_iwn.c
Bernhard Schmidt 80abcbf807 Let net80211 also know about stopped BA sessions. This fixes some issues 
where the driver assumed that BA resources are still available due to
net80211 saying so.

PR:		161407, 159768
Tested by:	cperciva, rene
MFC after:	3 days
2011-10-24 07:37:01 +00:00

7017 lines
197 KiB
C
Raw Blame History

/*-
* Copyright (c) 2007-2009
* 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 WiFi Link 4965 and 1000/5000/6000 Series 802.11 network
* adapters.
*/
#include <sys/cdefs.h>
__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>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <net/bpf.h>
#include <net/if.h>
#include <net/if_arp.h>
#include <net/ethernet.h>
#include <net/if_dl.h>
#include <net/if_media.h>
#include <net/if_types.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/in_var.h>
#include <netinet/if_ether.h>
#include <netinet/ip.h>
#include <net80211/ieee80211_var.h>
#include <net80211/ieee80211_radiotap.h>
#include <net80211/ieee80211_regdomain.h>
#include <net80211/ieee80211_ratectl.h>
#include <dev/iwn/if_iwnreg.h>
#include <dev/iwn/if_iwnvar.h>
struct iwn_ident {
uint16_t vendor;
uint16_t device;
const char *name;
};
static const struct iwn_ident iwn_ident_table[] = {
{ 0x8086, 0x0082, "Intel(R) Centrino(R) Advanced-N 6205" },
{ 0x8086, 0x0083, "Intel(R) Centrino(R) Wireless-N 1000" },
{ 0x8086, 0x0084, "Intel(R) Centrino(R) Wireless-N 1000" },
{ 0x8086, 0x0085, "Intel(R) Centrino(R) Advanced-N 6205" },
{ 0x8086, 0x0087, "Intel(R) Centrino(R) Advanced-N + WiMAX 6250" },
{ 0x8086, 0x0089, "Intel(R) Centrino(R) Advanced-N + WiMAX 6250" },
{ 0x8086, 0x008a, "Intel(R) Centrino(R) Wireless-N 1030" },
{ 0x8086, 0x008b, "Intel(R) Centrino(R) Wireless-N 1030" },
{ 0x8086, 0x0090, "Intel(R) Centrino(R) Advanced-N 6230" },
{ 0x8086, 0x0091, "Intel(R) Centrino(R) Advanced-N 6230" },
{ 0x8086, 0x0896, "Intel(R) Centrino(R) Wireless-N 130" },
{ 0x8086, 0x4229, "Intel(R) Wireless WiFi Link 4965" },
{ 0x8086, 0x422b, "Intel(R) Centrino(R) Ultimate-N 6300" },
{ 0x8086, 0x422c, "Intel(R) Centrino(R) Advanced-N 6200" },
{ 0x8086, 0x422d, "Intel(R) Wireless WiFi Link 4965" },
{ 0x8086, 0x4230, "Intel(R) Wireless WiFi Link 4965" },
{ 0x8086, 0x4232, "Intel(R) WiFi Link 5100" },
{ 0x8086, 0x4233, "Intel(R) Wireless WiFi Link 4965" },
{ 0x8086, 0x4235, "Intel(R) Ultimate N WiFi Link 5300" },
{ 0x8086, 0x4236, "Intel(R) Ultimate N WiFi Link 5300" },
{ 0x8086, 0x4237, "Intel(R) WiFi Link 5100" },
{ 0x8086, 0x4238, "Intel(R) Centrino(R) Ultimate-N 6300" },
{ 0x8086, 0x4239, "Intel(R) Centrino(R) Advanced-N 6200" },
{ 0x8086, 0x423a, "Intel(R) WiMAX/WiFi Link 5350" },
{ 0x8086, 0x423b, "Intel(R) WiMAX/WiFi Link 5350" },
{ 0x8086, 0x423c, "Intel(R) WiMAX/WiFi Link 5150" },
{ 0x8086, 0x423d, "Intel(R) WiMAX/WiFi Link 5150" },
{ 0, 0, NULL }
};
static int iwn_probe(device_t);
static int iwn_attach(device_t);
static int iwn4965_attach(struct iwn_softc *, uint16_t);
static int iwn5000_attach(struct iwn_softc *, uint16_t);
static void iwn_radiotap_attach(struct iwn_softc *);
static void iwn_sysctlattach(struct iwn_softc *);
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_detach(device_t);
static int iwn_shutdown(device_t);
static int iwn_suspend(device_t);
static int iwn_resume(device_t);
static int iwn_nic_lock(struct iwn_softc *);
static int iwn_eeprom_lock(struct iwn_softc *);
static int iwn_init_otprom(struct iwn_softc *);
static int iwn_read_prom_data(struct iwn_softc *, uint32_t, void *, int);
static void iwn_dma_map_addr(void *, bus_dma_segment_t *, int, int);
static int iwn_dma_contig_alloc(struct iwn_softc *, struct iwn_dma_info *,
void **, bus_size_t, bus_size_t);
static void iwn_dma_contig_free(struct iwn_dma_info *);
static int iwn_alloc_sched(struct iwn_softc *);
static void iwn_free_sched(struct iwn_softc *);
static int iwn_alloc_kw(struct iwn_softc *);
static void iwn_free_kw(struct iwn_softc *);
static int iwn_alloc_ict(struct iwn_softc *);
static void iwn_free_ict(struct iwn_softc *);
static int iwn_alloc_fwmem(struct iwn_softc *);
static void iwn_free_fwmem(struct iwn_softc *);
static int iwn_alloc_rx_ring(struct iwn_softc *, struct iwn_rx_ring *);
static void iwn_reset_rx_ring(struct iwn_softc *, struct iwn_rx_ring *);
static void iwn_free_rx_ring(struct iwn_softc *, struct iwn_rx_ring *);
static int iwn_alloc_tx_ring(struct iwn_softc *, struct iwn_tx_ring *,
int);
static void iwn_reset_tx_ring(struct iwn_softc *, struct iwn_tx_ring *);
static void iwn_free_tx_ring(struct iwn_softc *, struct iwn_tx_ring *);
static void iwn5000_ict_reset(struct iwn_softc *);
static int iwn_read_eeprom(struct iwn_softc *,
uint8_t macaddr[IEEE80211_ADDR_LEN]);
static void iwn4965_read_eeprom(struct iwn_softc *);
static void iwn4965_print_power_group(struct iwn_softc *, int);
static void iwn5000_read_eeprom(struct iwn_softc *);
static uint32_t iwn_eeprom_channel_flags(struct iwn_eeprom_chan *);
static void iwn_read_eeprom_band(struct iwn_softc *, int);
static void iwn_read_eeprom_ht40(struct iwn_softc *, int);
static void iwn_read_eeprom_channels(struct iwn_softc *, int, uint32_t);
static struct iwn_eeprom_chan *iwn_find_eeprom_channel(struct iwn_softc *,
struct ieee80211_channel *);
static int iwn_setregdomain(struct ieee80211com *,
struct ieee80211_regdomain *, int,
struct ieee80211_channel[]);
static void iwn_read_eeprom_enhinfo(struct iwn_softc *);
static struct ieee80211_node *iwn_node_alloc(struct ieee80211vap *,
const uint8_t mac[IEEE80211_ADDR_LEN]);
static void iwn_newassoc(struct ieee80211_node *, int);
static int iwn_media_change(struct ifnet *);
static int iwn_newstate(struct ieee80211vap *, enum ieee80211_state, int);
static void iwn_calib_timeout(void *);
static void iwn_rx_phy(struct iwn_softc *, struct iwn_rx_desc *,
struct iwn_rx_data *);
static void iwn_rx_done(struct iwn_softc *, struct iwn_rx_desc *,
struct iwn_rx_data *);
static void iwn_rx_compressed_ba(struct iwn_softc *, struct iwn_rx_desc *,
struct iwn_rx_data *);
static void iwn5000_rx_calib_results(struct iwn_softc *,
struct iwn_rx_desc *, struct iwn_rx_data *);
static void iwn_rx_statistics(struct iwn_softc *, struct iwn_rx_desc *,
struct iwn_rx_data *);
static void iwn4965_tx_done(struct iwn_softc *, struct iwn_rx_desc *,
struct iwn_rx_data *);
static void iwn5000_tx_done(struct iwn_softc *, struct iwn_rx_desc *,
struct iwn_rx_data *);
static void iwn_tx_done(struct iwn_softc *, struct iwn_rx_desc *, int,
uint8_t);
static void iwn_ampdu_tx_done(struct iwn_softc *, int, int, int, void *);
static void iwn_cmd_done(struct iwn_softc *, struct iwn_rx_desc *);
static void iwn_notif_intr(struct iwn_softc *);
static void iwn_wakeup_intr(struct iwn_softc *);
static void iwn_rftoggle_intr(struct iwn_softc *);
static void iwn_fatal_intr(struct iwn_softc *);
static void iwn_intr(void *);
static void iwn4965_update_sched(struct iwn_softc *, int, int, uint8_t,
uint16_t);
static void iwn5000_update_sched(struct iwn_softc *, int, int, uint8_t,
uint16_t);
#ifdef notyet
static void iwn5000_reset_sched(struct iwn_softc *, int, int);
#endif
static int iwn_tx_data(struct iwn_softc *, struct mbuf *,
struct ieee80211_node *);
static int iwn_tx_data_raw(struct iwn_softc *, struct mbuf *,
struct ieee80211_node *,
const struct ieee80211_bpf_params *params);
static int iwn_raw_xmit(struct ieee80211_node *, struct mbuf *,
const struct ieee80211_bpf_params *);
static void iwn_start(struct ifnet *);
static void iwn_start_locked(struct ifnet *);
static void iwn_watchdog(void *);
static int iwn_ioctl(struct ifnet *, u_long, caddr_t);
static int iwn_cmd(struct iwn_softc *, int, const void *, int, int);
static int iwn4965_add_node(struct iwn_softc *, struct iwn_node_info *,
int);
static int iwn5000_add_node(struct iwn_softc *, struct iwn_node_info *,
int);
static int iwn_set_link_quality(struct iwn_softc *,
struct ieee80211_node *);
static int iwn_add_broadcast_node(struct iwn_softc *, int);
static int iwn_updateedca(struct ieee80211com *);
static void iwn_update_mcast(struct ifnet *);
static void iwn_set_led(struct iwn_softc *, uint8_t, uint8_t, uint8_t);
static int iwn_set_critical_temp(struct iwn_softc *);
static int iwn_set_timing(struct iwn_softc *, struct ieee80211_node *);
static void iwn4965_power_calibration(struct iwn_softc *, int);
static int iwn4965_set_txpower(struct iwn_softc *,
struct ieee80211_channel *, int);
static int iwn5000_set_txpower(struct iwn_softc *,
struct ieee80211_channel *, int);
static int iwn4965_get_rssi(struct iwn_softc *, struct iwn_rx_stat *);
static int iwn5000_get_rssi(struct iwn_softc *, struct iwn_rx_stat *);
static int iwn_get_noise(const struct iwn_rx_general_stats *);
static int iwn4965_get_temperature(struct iwn_softc *);
static int iwn5000_get_temperature(struct iwn_softc *);
static int iwn_init_sensitivity(struct iwn_softc *);
static void iwn_collect_noise(struct iwn_softc *,
const struct iwn_rx_general_stats *);
static int iwn4965_init_gains(struct iwn_softc *);
static int iwn5000_init_gains(struct iwn_softc *);
static int iwn4965_set_gains(struct iwn_softc *);
static int iwn5000_set_gains(struct iwn_softc *);
static void iwn_tune_sensitivity(struct iwn_softc *,
const struct iwn_rx_stats *);
static int iwn_send_sensitivity(struct iwn_softc *);
static int iwn_set_pslevel(struct iwn_softc *, int, int, int);
static int iwn_send_btcoex(struct iwn_softc *);
static int iwn_send_advanced_btcoex(struct iwn_softc *);
static int iwn_config(struct iwn_softc *);
static uint8_t *ieee80211_add_ssid(uint8_t *, const uint8_t *, u_int);
static int iwn_scan(struct iwn_softc *);
static int iwn_auth(struct iwn_softc *, struct ieee80211vap *vap);
static int iwn_run(struct iwn_softc *, struct ieee80211vap *vap);
static int iwn_ampdu_rx_start(struct ieee80211_node *,
struct ieee80211_rx_ampdu *, int, int, int);
static void iwn_ampdu_rx_stop(struct ieee80211_node *,
struct ieee80211_rx_ampdu *);
static int iwn_addba_request(struct ieee80211_node *,
struct ieee80211_tx_ampdu *, int, int, int);
static int iwn_addba_response(struct ieee80211_node *,
struct ieee80211_tx_ampdu *, int, int, int);
static int iwn_ampdu_tx_start(struct ieee80211com *,
struct ieee80211_node *, uint8_t);
static void iwn_ampdu_tx_stop(struct ieee80211_node *,
struct ieee80211_tx_ampdu *);
static void iwn4965_ampdu_tx_start(struct iwn_softc *,
struct ieee80211_node *, int, uint8_t, uint16_t);
static void iwn4965_ampdu_tx_stop(struct iwn_softc *, int,
uint8_t, uint16_t);
static void iwn5000_ampdu_tx_start(struct iwn_softc *,
struct ieee80211_node *, int, uint8_t, uint16_t);
static void iwn5000_ampdu_tx_stop(struct iwn_softc *, int,
uint8_t, uint16_t);
static int iwn5000_query_calibration(struct iwn_softc *);
static int iwn5000_send_calibration(struct iwn_softc *);
static int iwn5000_send_wimax_coex(struct iwn_softc *);
static int iwn5000_crystal_calib(struct iwn_softc *);
static int iwn5000_temp_offset_calib(struct iwn_softc *);
static int iwn4965_post_alive(struct iwn_softc *);
static int iwn5000_post_alive(struct iwn_softc *);
static int iwn4965_load_bootcode(struct iwn_softc *, const uint8_t *,
int);
static int iwn4965_load_firmware(struct iwn_softc *);
static int iwn5000_load_firmware_section(struct iwn_softc *, uint32_t,
const uint8_t *, int);
static int iwn5000_load_firmware(struct iwn_softc *);
static int iwn_read_firmware_leg(struct iwn_softc *,
struct iwn_fw_info *);
static int iwn_read_firmware_tlv(struct iwn_softc *,
struct iwn_fw_info *, uint16_t);
static int iwn_read_firmware(struct iwn_softc *);
static int iwn_clock_wait(struct iwn_softc *);
static int iwn_apm_init(struct iwn_softc *);
static void iwn_apm_stop_master(struct iwn_softc *);
static void iwn_apm_stop(struct iwn_softc *);
static int iwn4965_nic_config(struct iwn_softc *);
static int iwn5000_nic_config(struct iwn_softc *);
static int iwn_hw_prepare(struct iwn_softc *);
static int iwn_hw_init(struct iwn_softc *);
static void iwn_hw_stop(struct iwn_softc *);
static void iwn_radio_on(void *, int);
static void iwn_radio_off(void *, int);
static void iwn_init_locked(struct iwn_softc *);
static void iwn_init(void *);
static void iwn_stop_locked(struct iwn_softc *);
static void iwn_stop(struct iwn_softc *);
static void iwn_scan_start(struct ieee80211com *);
static void iwn_scan_end(struct ieee80211com *);
static void iwn_set_channel(struct ieee80211com *);
static void iwn_scan_curchan(struct ieee80211_scan_state *, unsigned long);
static void iwn_scan_mindwell(struct ieee80211_scan_state *);
static void iwn_hw_reset(void *, int);
#define IWN_DEBUG
#ifdef IWN_DEBUG
enum {
IWN_DEBUG_XMIT = 0x00000001, /* basic xmit operation */
IWN_DEBUG_RECV = 0x00000002, /* basic recv operation */
IWN_DEBUG_STATE = 0x00000004, /* 802.11 state transitions */
IWN_DEBUG_TXPOW = 0x00000008, /* tx power processing */
IWN_DEBUG_RESET = 0x00000010, /* reset processing */
IWN_DEBUG_OPS = 0x00000020, /* iwn_ops processing */
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 */
IWN_DEBUG_FATAL = 0x80000000, /* fatal errors */
IWN_DEBUG_ANY = 0xffffffff
};
#define DPRINTF(sc, m, fmt, ...) do { \
if (sc->sc_debug & (m)) \
printf(fmt, __VA_ARGS__); \
} while (0)
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_RX_PHY: return "RX_PHY";
case IWN_MPDU_RX_DONE: return "MPDU_RX_DONE";
case IWN_RX_DONE: return "RX_DONE";
/* Command Notifications */
case IWN_CMD_RXON: return "IWN_CMD_RXON";
case IWN_CMD_RXON_ASSOC: return "IWN_CMD_RXON_ASSOC";
case IWN_CMD_EDCA_PARAMS: return "IWN_CMD_EDCA_PARAMS";
case IWN_CMD_TIMING: return "IWN_CMD_TIMING";
case IWN_CMD_LINK_QUALITY: return "IWN_CMD_LINK_QUALITY";
case IWN_CMD_SET_LED: return "IWN_CMD_SET_LED";
case IWN5000_CMD_WIMAX_COEX: return "IWN5000_CMD_WIMAX_COEX";
case IWN5000_CMD_CALIB_CONFIG: return "IWN5000_CMD_CALIB_CONFIG";
case IWN5000_CMD_CALIB_RESULT: return "IWN5000_CMD_CALIB_RESULT";
case IWN5000_CMD_CALIB_COMPLETE: return "IWN5000_CMD_CALIB_COMPLETE";
case IWN_CMD_SET_POWER_MODE: return "IWN_CMD_SET_POWER_MODE";
case IWN_CMD_SCAN: return "IWN_CMD_SCAN";
case IWN_CMD_SCAN_RESULTS: return "IWN_CMD_SCAN_RESULTS";
case IWN_CMD_TXPOWER: return "IWN_CMD_TXPOWER";
case IWN_CMD_TXPOWER_DBM: return "IWN_CMD_TXPOWER_DBM";
case IWN5000_CMD_TX_ANT_CONFIG: return "IWN5000_CMD_TX_ANT_CONFIG";
case IWN_CMD_BT_COEX: return "IWN_CMD_BT_COEX";
case IWN_CMD_SET_CRITICAL_TEMP: return "IWN_CMD_SET_CRITICAL_TEMP";
case IWN_CMD_SET_SENSITIVITY: return "IWN_CMD_SET_SENSITIVITY";
case IWN_CMD_PHY_CALIB: return "IWN_CMD_PHY_CALIB";
}
return "UNKNOWN INTR NOTIF/CMD";
}
#else
#define DPRINTF(sc, m, fmt, ...) do { (void) sc; } while (0)
#endif
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_VERSION(iwn, 1);
MODULE_DEPEND(iwn, firmware, 1, 1, 1);
MODULE_DEPEND(iwn, pci, 1, 1, 1);
MODULE_DEPEND(iwn, wlan, 1, 1, 1);
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;
uint32_t reg;
int i, error, result;
uint8_t macaddr[IEEE80211_ADDR_LEN];
sc->sc_dev = dev;
/*
* Get the offset of the PCI Express Capability Structure in PCI
* Configuration Space.
*/
error = pci_find_cap(dev, PCIY_EXPRESS, &sc->sc_cap_off);
if (error != 0) {
device_printf(dev, "PCIe capability structure not found!\n");
return error;
}
/* Clear device-specific "PCI retry timeout" register (41h). */
pci_write_config(dev, 0x41, 0, 1);
/* Hardware bug workaround. */
reg = pci_read_config(dev, PCIR_COMMAND, 1);
if (reg & PCIM_CMD_INTxDIS) {
DPRINTF(sc, IWN_DEBUG_RESET, "%s: PCIe INTx Disable set\n",
__func__);
reg &= ~PCIM_CMD_INTxDIS;
pci_write_config(dev, PCIR_COMMAND, reg, 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, "can't map mem space\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;
/* Install interrupt handler. */
sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid,
RF_ACTIVE | RF_SHAREABLE);
if (sc->irq == NULL) {
device_printf(dev, "can't map interrupt\n");
error = ENOMEM;
goto fail;
}
IWN_LOCK_INIT(sc);
/* Read hardware revision and attach. */
sc->hw_type = (IWN_READ(sc, IWN_HW_REV) >> 4) & 0xf;
if (sc->hw_type == IWN_HW_REV_TYPE_4965)
error = iwn4965_attach(sc, pci_get_device(dev));
else
error = iwn5000_attach(sc, pci_get_device(dev));
if (error != 0) {
device_printf(dev, "could not attach device, error %d\n",
error);
goto fail;
}
if ((error = iwn_hw_prepare(sc)) != 0) {
device_printf(dev, "hardware not ready, error %d\n", error);
goto fail;
}
/* Allocate DMA memory for firmware transfers. */
if ((error = iwn_alloc_fwmem(sc)) != 0) {
device_printf(dev,
"could not allocate memory for firmware, error %d\n",
error);
goto fail;
}
/* Allocate "Keep Warm" page. */
if ((error = iwn_alloc_kw(sc)) != 0) {
device_printf(dev,
"could not allocate keep warm page, error %d\n", error);
goto fail;
}
/* Allocate ICT table for 5000 Series. */
if (sc->hw_type != IWN_HW_REV_TYPE_4965 &&
(error = iwn_alloc_ict(sc)) != 0) {
device_printf(dev, "could not allocate ICT table, error %d\n",
error);
goto fail;
}
/* Allocate TX scheduler "rings". */
if ((error = iwn_alloc_sched(sc)) != 0) {
device_printf(dev,
"could not allocate TX scheduler rings, error %d\n", error);
goto fail;
}
/* Allocate TX rings (16 on 4965AGN, 20 on >=5000). */
for (i = 0; i < sc->ntxqs; i++) {
if ((error = iwn_alloc_tx_ring(sc, &sc->txq[i], i)) != 0) {
device_printf(dev,
"could not allocate TX ring %d, error %d\n", i,
error);
goto fail;
}
}
/* Allocate RX ring. */
if ((error = iwn_alloc_rx_ring(sc, &sc->rxq)) != 0) {
device_printf(dev, "could not allocate RX ring, error %d\n",
error);
goto fail;
}
/* Clear pending interrupts. */
IWN_WRITE(sc, IWN_INT, 0xffffffff);
ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211);
if (ifp == NULL) {
device_printf(dev, "can not allocate ifnet structure\n");
goto fail;
}
ic = ifp->if_l2com;
ic->ic_ifp = ifp;
ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */
ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */
/* Set device capabilities. */
ic->ic_caps =
IEEE80211_C_STA /* station mode supported */
| IEEE80211_C_MONITOR /* monitor mode supported */
| IEEE80211_C_BGSCAN /* background scanning */
| 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_IBSS /* ibss/adhoc mode */
#endif
| IEEE80211_C_WME /* WME */
;
/* Read MAC address, channels, etc from EEPROM. */
if ((error = iwn_read_eeprom(sc, macaddr)) != 0) {
device_printf(dev, "could not read EEPROM, error %d\n",
error);
goto fail;
}
/* Count the number of available chains. */
sc->ntxchains =
((sc->txchainmask >> 2) & 1) +
((sc->txchainmask >> 1) & 1) +
((sc->txchainmask >> 0) & 1);
sc->nrxchains =
((sc->rxchainmask >> 2) & 1) +
((sc->rxchainmask >> 1) & 1) +
((sc->rxchainmask >> 0) & 1);
if (bootverbose) {
device_printf(dev, "MIMO %dT%dR, %.4s, address %6D\n",
sc->ntxchains, sc->nrxchains, sc->eeprom_domain,
macaddr, ":");
}
if (sc->sc_flags & IWN_FLAG_HAS_11N) {
ic->ic_rxstream = sc->nrxchains;
ic->ic_txstream = sc->ntxchains;
ic->ic_htcaps =
IEEE80211_HTCAP_SMPS_OFF /* SMPS mode disabled */
| IEEE80211_HTCAP_SHORTGI20 /* short GI in 20MHz */
| IEEE80211_HTCAP_CHWIDTH40 /* 40MHz channel width*/
| IEEE80211_HTCAP_SHORTGI40 /* short GI in 40MHz */
#ifdef notyet
| IEEE80211_HTCAP_GREENFIELD
#if IWN_RBUF_SIZE == 8192
| IEEE80211_HTCAP_MAXAMSDU_7935 /* max A-MSDU length */
#else
| IEEE80211_HTCAP_MAXAMSDU_3839 /* max A-MSDU length */
#endif
#endif
/* s/w capabilities */
| IEEE80211_HTC_HT /* HT operation */
| IEEE80211_HTC_AMPDU /* tx A-MPDU */
#ifdef notyet
| IEEE80211_HTC_AMSDU /* tx A-MSDU */
#endif
;
}
if_initname(ifp, device_get_name(dev), device_get_unit(dev));
ifp->if_softc = sc;
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
ifp->if_init = iwn_init;
ifp->if_ioctl = iwn_ioctl;
ifp->if_start = iwn_start;
IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
IFQ_SET_READY(&ifp->if_snd);
ieee80211_ifattach(ic, macaddr);
ic->ic_vap_create = iwn_vap_create;
ic->ic_vap_delete = iwn_vap_delete;
ic->ic_raw_xmit = iwn_raw_xmit;
ic->ic_node_alloc = iwn_node_alloc;
sc->sc_ampdu_rx_start = ic->ic_ampdu_rx_start;
ic->ic_ampdu_rx_start = iwn_ampdu_rx_start;
sc->sc_ampdu_rx_stop = ic->ic_ampdu_rx_stop;
ic->ic_ampdu_rx_stop = iwn_ampdu_rx_stop;
sc->sc_addba_request = ic->ic_addba_request;
ic->ic_addba_request = iwn_addba_request;
sc->sc_addba_response = ic->ic_addba_response;
ic->ic_addba_response = iwn_addba_response;
sc->sc_addba_stop = ic->ic_addba_stop;
ic->ic_addba_stop = iwn_ampdu_tx_stop;
ic->ic_newassoc = iwn_newassoc;
ic->ic_wme.wme_update = iwn_updateedca;
ic->ic_update_mcast = iwn_update_mcast;
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;
ic->ic_setregdomain = iwn_setregdomain;
iwn_radiotap_attach(sc);
callout_init_mtx(&sc->calib_to, &sc->sc_mtx, 0);
callout_init_mtx(&sc->watchdog_to, &sc->sc_mtx, 0);
TASK_INIT(&sc->sc_reinit_task, 0, iwn_hw_reset, sc);
TASK_INIT(&sc->sc_radioon_task, 0, iwn_radio_on, sc);
TASK_INIT(&sc->sc_radiooff_task, 0, iwn_radio_off, 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, "can't establish interrupt, error %d\n",
error);
goto fail;
}
if (bootverbose)
ieee80211_announce(ic);
return 0;
fail:
iwn_detach(dev);
return error;
}
static int
iwn4965_attach(struct iwn_softc *sc, uint16_t pid)
{
struct iwn_ops *ops = &sc->ops;
ops->load_firmware = iwn4965_load_firmware;
ops->read_eeprom = iwn4965_read_eeprom;
ops->post_alive = iwn4965_post_alive;
ops->nic_config = iwn4965_nic_config;
ops->update_sched = iwn4965_update_sched;
ops->get_temperature = iwn4965_get_temperature;
ops->get_rssi = iwn4965_get_rssi;
ops->set_txpower = iwn4965_set_txpower;
ops->init_gains = iwn4965_init_gains;
ops->set_gains = iwn4965_set_gains;
ops->add_node = iwn4965_add_node;
ops->tx_done = iwn4965_tx_done;
ops->ampdu_tx_start = iwn4965_ampdu_tx_start;
ops->ampdu_tx_stop = iwn4965_ampdu_tx_stop;
sc->ntxqs = IWN4965_NTXQUEUES;
sc->firstaggqueue = IWN4965_FIRSTAGGQUEUE;
sc->ndmachnls = IWN4965_NDMACHNLS;
sc->broadcast_id = IWN4965_ID_BROADCAST;
sc->rxonsz = IWN4965_RXONSZ;
sc->schedsz = IWN4965_SCHEDSZ;
sc->fw_text_maxsz = IWN4965_FW_TEXT_MAXSZ;
sc->fw_data_maxsz = IWN4965_FW_DATA_MAXSZ;
sc->fwsz = IWN4965_FWSZ;
sc->sched_txfact_addr = IWN4965_SCHED_TXFACT;
sc->limits = &iwn4965_sensitivity_limits;
sc->fwname = "iwn4965fw";
/* Override chains masks, ROM is known to be broken. */
sc->txchainmask = IWN_ANT_AB;
sc->rxchainmask = IWN_ANT_ABC;
return 0;
}
static int
iwn5000_attach(struct iwn_softc *sc, uint16_t pid)
{
struct iwn_ops *ops = &sc->ops;
ops->load_firmware = iwn5000_load_firmware;
ops->read_eeprom = iwn5000_read_eeprom;
ops->post_alive = iwn5000_post_alive;
ops->nic_config = iwn5000_nic_config;
ops->update_sched = iwn5000_update_sched;
ops->get_temperature = iwn5000_get_temperature;
ops->get_rssi = iwn5000_get_rssi;
ops->set_txpower = iwn5000_set_txpower;
ops->init_gains = iwn5000_init_gains;
ops->set_gains = iwn5000_set_gains;
ops->add_node = iwn5000_add_node;
ops->tx_done = iwn5000_tx_done;
ops->ampdu_tx_start = iwn5000_ampdu_tx_start;
ops->ampdu_tx_stop = iwn5000_ampdu_tx_stop;
sc->ntxqs = IWN5000_NTXQUEUES;
sc->firstaggqueue = IWN5000_FIRSTAGGQUEUE;
sc->ndmachnls = IWN5000_NDMACHNLS;
sc->broadcast_id = IWN5000_ID_BROADCAST;
sc->rxonsz = IWN5000_RXONSZ;
sc->schedsz = IWN5000_SCHEDSZ;
sc->fw_text_maxsz = IWN5000_FW_TEXT_MAXSZ;
sc->fw_data_maxsz = IWN5000_FW_DATA_MAXSZ;
sc->fwsz = IWN5000_FWSZ;
sc->sched_txfact_addr = IWN5000_SCHED_TXFACT;
sc->reset_noise_gain = IWN5000_PHY_CALIB_RESET_NOISE_GAIN;
sc->noise_gain = IWN5000_PHY_CALIB_NOISE_GAIN;
switch (sc->hw_type) {
case IWN_HW_REV_TYPE_5100:
sc->limits = &iwn5000_sensitivity_limits;
sc->fwname = "iwn5000fw";
/* Override chains masks, ROM is known to be broken. */
sc->txchainmask = IWN_ANT_B;
sc->rxchainmask = IWN_ANT_AB;
break;
case IWN_HW_REV_TYPE_5150:
sc->limits = &iwn5150_sensitivity_limits;
sc->fwname = "iwn5150fw";
break;
case IWN_HW_REV_TYPE_5300:
case IWN_HW_REV_TYPE_5350:
sc->limits = &iwn5000_sensitivity_limits;
sc->fwname = "iwn5000fw";
break;
case IWN_HW_REV_TYPE_1000:
sc->limits = &iwn1000_sensitivity_limits;
sc->fwname = "iwn1000fw";
break;
case IWN_HW_REV_TYPE_6000:
sc->limits = &iwn6000_sensitivity_limits;
sc->fwname = "iwn6000fw";
if (pid == 0x422c || pid == 0x4239) {
sc->sc_flags |= IWN_FLAG_INTERNAL_PA;
/* Override chains masks, ROM is known to be broken. */
sc->txchainmask = IWN_ANT_BC;
sc->rxchainmask = IWN_ANT_BC;
}
break;
case IWN_HW_REV_TYPE_6050:
sc->limits = &iwn6000_sensitivity_limits;
sc->fwname = "iwn6050fw";
/* Override chains masks, ROM is known to be broken. */
sc->txchainmask = IWN_ANT_AB;
sc->rxchainmask = IWN_ANT_AB;
break;
case IWN_HW_REV_TYPE_6005:
sc->limits = &iwn6000_sensitivity_limits;
if (pid != 0x0082 && pid != 0x0085) {
sc->fwname = "iwn6000g2bfw";
sc->sc_flags |= IWN_FLAG_ADV_BTCOEX;
} else
sc->fwname = "iwn6000g2afw";
break;
default:
device_printf(sc->sc_dev, "adapter type %d not supported\n",
sc->hw_type);
return ENOTSUP;
}
return 0;
}
/*
* Attach the interface to 802.11 radiotap.
*/
static void
iwn_radiotap_attach(struct iwn_softc *sc)
{
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
ieee80211_radiotap_attach(ic,
&sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
IWN_TX_RADIOTAP_PRESENT,
&sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
IWN_RX_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
}
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_ratectl_init(vap);
/* Complete setup. */
ieee80211_vap_attach(vap, iwn_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_ratectl_deinit(vap);
ieee80211_vap_detach(vap);
free(ivp, M_80211_VAP);
}
static int
iwn_detach(device_t dev)
{
struct iwn_softc *sc = device_get_softc(dev);
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic;
int qid;
if (ifp != NULL) {
ic = ifp->if_l2com;
ieee80211_draintask(ic, &sc->sc_reinit_task);
ieee80211_draintask(ic, &sc->sc_radioon_task);
ieee80211_draintask(ic, &sc->sc_radiooff_task);
iwn_stop(sc);
callout_drain(&sc->watchdog_to);
callout_drain(&sc->calib_to);
ieee80211_ifdetach(ic);
}
/* Uninstall interrupt handler. */
if (sc->irq != NULL) {
bus_teardown_intr(dev, sc->irq, sc->sc_ih);
bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq);
if (sc->irq_rid == 1)
pci_release_msi(dev);
}
/* Free DMA resources. */
iwn_free_rx_ring(sc, &sc->rxq);
for (qid = 0; qid < sc->ntxqs; qid++)
iwn_free_tx_ring(sc, &sc->txq[qid]);
iwn_free_sched(sc);
iwn_free_kw(sc);
if (sc->ict != NULL)
iwn_free_ict(sc);
iwn_free_fwmem(sc);
if (sc->mem != NULL)
bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem);
if (ifp != NULL)
if_free(ifp);
IWN_LOCK_DESTROY(sc);
return 0;
}
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);
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
iwn_stop(sc);
if (vap != NULL)
ieee80211_stop(vap);
return 0;
}
static int
iwn_resume(device_t dev)
{
struct iwn_softc *sc = device_get_softc(dev);
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
/* Clear device-specific "PCI retry timeout" register (41h). */
pci_write_config(dev, 0x41, 0, 1);
if (ifp->if_flags & IFF_UP) {
iwn_init(sc);
if (vap != NULL)
ieee80211_init(vap);
if (ifp->if_drv_flags & IFF_DRV_RUNNING)
iwn_start(ifp);
}
return 0;
}
static int
iwn_nic_lock(struct iwn_softc *sc)
{
int ntries;
/* Request exclusive access to NIC. */
IWN_SETBITS(sc, IWN_GP_CNTRL, IWN_GP_CNTRL_MAC_ACCESS_REQ);
/* Spin until we actually get the lock. */
for (ntries = 0; ntries < 1000; ntries++) {
if ((IWN_READ(sc, IWN_GP_CNTRL) &
(IWN_GP_CNTRL_MAC_ACCESS_ENA | IWN_GP_CNTRL_SLEEP)) ==
IWN_GP_CNTRL_MAC_ACCESS_ENA)
return 0;
DELAY(10);
}
return ETIMEDOUT;
}
static __inline void
iwn_nic_unlock(struct iwn_softc *sc)
{
IWN_CLRBITS(sc, IWN_GP_CNTRL, IWN_GP_CNTRL_MAC_ACCESS_REQ);
}
static __inline uint32_t
iwn_prph_read(struct iwn_softc *sc, uint32_t addr)
{
IWN_WRITE(sc, IWN_PRPH_RADDR, IWN_PRPH_DWORD | addr);
IWN_BARRIER_READ_WRITE(sc);
return IWN_READ(sc, IWN_PRPH_RDATA);
}
static __inline void
iwn_prph_write(struct iwn_softc *sc, uint32_t addr, uint32_t data)
{
IWN_WRITE(sc, IWN_PRPH_WADDR, IWN_PRPH_DWORD | addr);
IWN_BARRIER_WRITE(sc);
IWN_WRITE(sc, IWN_PRPH_WDATA, data);
}
static __inline void
iwn_prph_setbits(struct iwn_softc *sc, uint32_t addr, uint32_t mask)
{
iwn_prph_write(sc, addr, iwn_prph_read(sc, addr) | mask);
}
static __inline void
iwn_prph_clrbits(struct iwn_softc *sc, uint32_t addr, uint32_t mask)
{
iwn_prph_write(sc, addr, iwn_prph_read(sc, addr) & ~mask);
}
static __inline void
iwn_prph_write_region_4(struct iwn_softc *sc, uint32_t addr,
const uint32_t *data, int count)
{
for (; count > 0; count--, data++, addr += 4)
iwn_prph_write(sc, addr, *data);
}
static __inline uint32_t
iwn_mem_read(struct iwn_softc *sc, uint32_t addr)
{
IWN_WRITE(sc, IWN_MEM_RADDR, addr);
IWN_BARRIER_READ_WRITE(sc);
return IWN_READ(sc, IWN_MEM_RDATA);
}
static __inline void
iwn_mem_write(struct iwn_softc *sc, uint32_t addr, uint32_t data)
{
IWN_WRITE(sc, IWN_MEM_WADDR, addr);
IWN_BARRIER_WRITE(sc);
IWN_WRITE(sc, IWN_MEM_WDATA, data);
}
static __inline void
iwn_mem_write_2(struct iwn_softc *sc, uint32_t addr, uint16_t data)
{
uint32_t tmp;
tmp = iwn_mem_read(sc, addr & ~3);
if (addr & 3)
tmp = (tmp & 0x0000ffff) | data << 16;
else
tmp = (tmp & 0xffff0000) | data;
iwn_mem_write(sc, addr & ~3, tmp);
}
static __inline void
iwn_mem_read_region_4(struct iwn_softc *sc, uint32_t addr, uint32_t *data,
int count)
{
for (; count > 0; count--, addr += 4)
*data++ = iwn_mem_read(sc, addr);
}
static __inline void
iwn_mem_set_region_4(struct iwn_softc *sc, uint32_t addr, uint32_t val,
int count)
{
for (; count > 0; count--, addr += 4)
iwn_mem_write(sc, addr, val);
}
static int
iwn_eeprom_lock(struct iwn_softc *sc)
{
int i, ntries;
for (i = 0; i < 100; i++) {
/* Request exclusive access to EEPROM. */
IWN_SETBITS(sc, IWN_HW_IF_CONFIG,
IWN_HW_IF_CONFIG_EEPROM_LOCKED);
/* Spin until we actually get the lock. */
for (ntries = 0; ntries < 100; ntries++) {
if (IWN_READ(sc, IWN_HW_IF_CONFIG) &
IWN_HW_IF_CONFIG_EEPROM_LOCKED)
return 0;
DELAY(10);
}
}
return ETIMEDOUT;
}
static __inline void
iwn_eeprom_unlock(struct iwn_softc *sc)
{
IWN_CLRBITS(sc, IWN_HW_IF_CONFIG, IWN_HW_IF_CONFIG_EEPROM_LOCKED);
}
/*
* Initialize access by host to One Time Programmable ROM.
* NB: This kind of ROM can be found on 1000 or 6000 Series only.
*/
static int
iwn_init_otprom(struct iwn_softc *sc)
{
uint16_t prev, base, next;
int count, error;
/* Wait for clock stabilization before accessing prph. */
if ((error = iwn_clock_wait(sc)) != 0)
return error;
if ((error = iwn_nic_lock(sc)) != 0)
return error;
iwn_prph_setbits(sc, IWN_APMG_PS, IWN_APMG_PS_RESET_REQ);
DELAY(5);
iwn_prph_clrbits(sc, IWN_APMG_PS, IWN_APMG_PS_RESET_REQ);
iwn_nic_unlock(sc);
/* Set auto clock gate disable bit for HW with OTP shadow RAM. */
if (sc->hw_type != IWN_HW_REV_TYPE_1000) {
IWN_SETBITS(sc, IWN_DBG_LINK_PWR_MGMT,
IWN_RESET_LINK_PWR_MGMT_DIS);
}
IWN_CLRBITS(sc, IWN_EEPROM_GP, IWN_EEPROM_GP_IF_OWNER);
/* Clear ECC status. */
IWN_SETBITS(sc, IWN_OTP_GP,
IWN_OTP_GP_ECC_CORR_STTS | IWN_OTP_GP_ECC_UNCORR_STTS);
/*
* Find the block before last block (contains the EEPROM image)
* for HW without OTP shadow RAM.
*/
if (sc->hw_type == IWN_HW_REV_TYPE_1000) {
/* Switch to absolute addressing mode. */
IWN_CLRBITS(sc, IWN_OTP_GP, IWN_OTP_GP_RELATIVE_ACCESS);
base = prev = 0;
for (count = 0; count < IWN1000_OTP_NBLOCKS; count++) {
error = iwn_read_prom_data(sc, base, &next, 2);
if (error != 0)
return error;
if (next == 0) /* End of linked-list. */
break;
prev = base;
base = le16toh(next);
}
if (count == 0 || count == IWN1000_OTP_NBLOCKS)
return EIO;
/* Skip "next" word. */
sc->prom_base = prev + 1;
}
return 0;
}
static int
iwn_read_prom_data(struct iwn_softc *sc, uint32_t addr, void *data, int count)
{
uint8_t *out = data;
uint32_t val, tmp;
int ntries;
addr += sc->prom_base;
for (; count > 0; count -= 2, addr++) {
IWN_WRITE(sc, IWN_EEPROM, addr << 2);
for (ntries = 0; ntries < 10; ntries++) {
val = IWN_READ(sc, IWN_EEPROM);
if (val & IWN_EEPROM_READ_VALID)
break;
DELAY(5);
}
if (ntries == 10) {
device_printf(sc->sc_dev,
"timeout reading ROM at 0x%x\n", addr);
return ETIMEDOUT;
}
if (sc->sc_flags & IWN_FLAG_HAS_OTPROM) {
/* OTPROM, check for ECC errors. */
tmp = IWN_READ(sc, IWN_OTP_GP);
if (tmp & IWN_OTP_GP_ECC_UNCORR_STTS) {
device_printf(sc->sc_dev,
"OTPROM ECC error at 0x%x\n", addr);
return EIO;
}
if (tmp & IWN_OTP_GP_ECC_CORR_STTS) {
/* Correctable ECC error, clear bit. */
IWN_SETBITS(sc, IWN_OTP_GP,
IWN_OTP_GP_ECC_CORR_STTS);
}
}
*out++ = val >> 16;
if (count > 1)
*out++ = val >> 24;
}
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 error;
dma->tag = NULL;
dma->size = size;
error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), alignment,
0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, size,
1, size, BUS_DMA_NOWAIT, NULL, NULL, &dma->tag);
if (error != 0)
goto fail;
error = bus_dmamem_alloc(dma->tag, (void **)&dma->vaddr,
BUS_DMA_NOWAIT | BUS_DMA_ZERO | BUS_DMA_COHERENT, &dma->map);
if (error != 0)
goto fail;
error = bus_dmamap_load(dma->tag, dma->map, dma->vaddr, size,
iwn_dma_map_addr, &dma->paddr, BUS_DMA_NOWAIT);
if (error != 0)
goto fail;
bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE);
if (kvap != NULL)
*kvap = dma->vaddr;
return 0;
fail: iwn_dma_contig_free(dma);
return error;
}
static void
iwn_dma_contig_free(struct iwn_dma_info *dma)
{
if (dma->map != NULL) {
if (dma->vaddr != NULL) {
bus_dmamap_sync(dma->tag, dma->map,
BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(dma->tag, dma->map);
bus_dmamem_free(dma->tag, &dma->vaddr, dma->map);
dma->vaddr = NULL;
}
bus_dmamap_destroy(dma->tag, dma->map);
dma->map = NULL;
}
if (dma->tag != NULL) {
bus_dma_tag_destroy(dma->tag);
dma->tag = NULL;
}
}
static int
iwn_alloc_sched(struct iwn_softc *sc)
{
/* TX scheduler rings must be aligned on a 1KB boundary. */
return iwn_dma_contig_alloc(sc, &sc->sched_dma, (void **)&sc->sched,
sc->schedsz, 1024);
}
static void
iwn_free_sched(struct iwn_softc *sc)
{
iwn_dma_contig_free(&sc->sched_dma);
}
static int
iwn_alloc_kw(struct iwn_softc *sc)
{
/* "Keep Warm" page must be aligned on a 4KB boundary. */
return iwn_dma_contig_alloc(sc, &sc->kw_dma, NULL, 4096, 4096);
}
static void
iwn_free_kw(struct iwn_softc *sc)
{
iwn_dma_contig_free(&sc->kw_dma);
}
static int
iwn_alloc_ict(struct iwn_softc *sc)
{
/* ICT table must be aligned on a 4KB boundary. */
return iwn_dma_contig_alloc(sc, &sc->ict_dma, (void **)&sc->ict,
IWN_ICT_SIZE, 4096);
}
static void
iwn_free_ict(struct iwn_softc *sc)
{
iwn_dma_contig_free(&sc->ict_dma);
}
static int
iwn_alloc_fwmem(struct iwn_softc *sc)
{
/* Must be aligned on a 16-byte boundary. */
return iwn_dma_contig_alloc(sc, &sc->fw_dma, NULL, sc->fwsz, 16);
}
static void
iwn_free_fwmem(struct iwn_softc *sc)
{
iwn_dma_contig_free(&sc->fw_dma);
}
static int
iwn_alloc_rx_ring(struct iwn_softc *sc, struct iwn_rx_ring *ring)
{
bus_size_t size;
int i, error;
ring->cur = 0;
/* Allocate RX descriptors (256-byte aligned). */
size = IWN_RX_RING_COUNT * sizeof (uint32_t);
error = iwn_dma_contig_alloc(sc, &ring->desc_dma, (void **)&ring->desc,
size, 256);
if (error != 0) {
device_printf(sc->sc_dev,
"%s: could not allocate RX ring DMA memory, error %d\n",
__func__, error);
goto fail;
}
/* Allocate RX status area (16-byte aligned). */
error = iwn_dma_contig_alloc(sc, &ring->stat_dma, (void **)&ring->stat,
sizeof (struct iwn_rx_status), 16);
if (error != 0) {
device_printf(sc->sc_dev,
"%s: could not allocate RX status DMA memory, error %d\n",
__func__, error);
goto fail;
}
/* Create RX buffer DMA tag. */
error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
IWN_RBUF_SIZE, 1, IWN_RBUF_SIZE, BUS_DMA_NOWAIT, NULL, NULL,
&ring->data_dmat);
if (error != 0) {
device_printf(sc->sc_dev,
"%s: could not create RX buf DMA tag, error %d\n",
__func__, error);
goto fail;
}
/*
* Allocate and map RX buffers.
*/
for (i = 0; i < IWN_RX_RING_COUNT; i++) {
struct iwn_rx_data *data = &ring->data[i];
bus_addr_t paddr;
error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
if (error != 0) {
device_printf(sc->sc_dev,
"%s: could not create RX buf DMA map, error %d\n",
__func__, error);
goto fail;
}
data->m = m_getjcl(M_DONTWAIT, MT_DATA, M_PKTHDR,
IWN_RBUF_SIZE);
if (data->m == NULL) {
device_printf(sc->sc_dev,
"%s: could not allocate RX mbuf\n", __func__);
error = ENOBUFS;
goto fail;
}
error = bus_dmamap_load(ring->data_dmat, data->map,
mtod(data->m, void *), IWN_RBUF_SIZE, iwn_dma_map_addr,
&paddr, BUS_DMA_NOWAIT);
if (error != 0 && error != EFBIG) {
device_printf(sc->sc_dev,
"%s: can't not map mbuf, error %d\n", __func__,
error);
goto fail;
}
/* Set physical address of RX buffer (256-byte aligned). */
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;
}
static void
iwn_reset_rx_ring(struct iwn_softc *sc, struct iwn_rx_ring *ring)
{
int ntries;
if (iwn_nic_lock(sc) == 0) {
IWN_WRITE(sc, IWN_FH_RX_CONFIG, 0);
for (ntries = 0; ntries < 1000; ntries++) {
if (IWN_READ(sc, IWN_FH_RX_STATUS) &
IWN_FH_RX_STATUS_IDLE)
break;
DELAY(10);
}
iwn_nic_unlock(sc);
}
ring->cur = 0;
sc->last_rx_valid = 0;
}
static void
iwn_free_rx_ring(struct iwn_softc *sc, struct iwn_rx_ring *ring)
{
int i;
iwn_dma_contig_free(&ring->desc_dma);
iwn_dma_contig_free(&ring->stat_dma);
for (i = 0; i < IWN_RX_RING_COUNT; i++) {
struct iwn_rx_data *data = &ring->data[i];
if (data->m != NULL) {
bus_dmamap_sync(ring->data_dmat, data->map,
BUS_DMASYNC_POSTREAD);
bus_dmamap_unload(ring->data_dmat, data->map);
m_freem(data->m);
data->m = NULL;
}
if (data->map != NULL)
bus_dmamap_destroy(ring->data_dmat, data->map);
}
if (ring->data_dmat != NULL) {
bus_dma_tag_destroy(ring->data_dmat);
ring->data_dmat = NULL;
}
}
static int
iwn_alloc_tx_ring(struct iwn_softc *sc, struct iwn_tx_ring *ring, int qid)
{
bus_addr_t paddr;
bus_size_t size;
int i, error;
ring->qid = qid;
ring->queued = 0;
ring->cur = 0;
/* Allocate TX descriptors (256-byte aligned). */
size = IWN_TX_RING_COUNT * sizeof (struct iwn_tx_desc);
error = iwn_dma_contig_alloc(sc, &ring->desc_dma, (void **)&ring->desc,
size, 256);
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);
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: could not create TX buf DMA tag, error %d\n",
__func__, error);
goto fail;
}
paddr = ring->cmd_dma.paddr;
for (i = 0; i < IWN_TX_RING_COUNT; i++) {
struct iwn_tx_data *data = &ring->data[i];
data->cmd_paddr = paddr;
data->scratch_paddr = paddr + 12;
paddr += sizeof (struct iwn_tx_cmd);
error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
if (error != 0) {
device_printf(sc->sc_dev,
"%s: could not create TX buf DMA map, error %d\n",
__func__, error);
goto fail;
}
}
return 0;
fail: iwn_free_tx_ring(sc, ring);
return error;
}
static void
iwn_reset_tx_ring(struct iwn_softc *sc, struct iwn_tx_ring *ring)
{
int i;
for (i = 0; i < IWN_TX_RING_COUNT; i++) {
struct iwn_tx_data *data = &ring->data[i];
if (data->m != NULL) {
bus_dmamap_sync(ring->data_dmat, data->map,
BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(ring->data_dmat, data->map);
m_freem(data->m);
data->m = NULL;
}
}
/* Clear TX descriptors. */
memset(ring->desc, 0, ring->desc_dma.size);
bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
BUS_DMASYNC_PREWRITE);
sc->qfullmsk &= ~(1 << ring->qid);
ring->queued = 0;
ring->cur = 0;
}
static 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);
for (i = 0; i < IWN_TX_RING_COUNT; i++) {
struct iwn_tx_data *data = &ring->data[i];
if (data->m != NULL) {
bus_dmamap_sync(ring->data_dmat, data->map,
BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(ring->data_dmat, data->map);
m_freem(data->m);
}
if (data->map != NULL)
bus_dmamap_destroy(ring->data_dmat, data->map);
}
if (ring->data_dmat != NULL) {
bus_dma_tag_destroy(ring->data_dmat);
ring->data_dmat = NULL;
}
}
static void
iwn5000_ict_reset(struct iwn_softc *sc)
{
/* Disable interrupts. */
IWN_WRITE(sc, IWN_INT_MASK, 0);
/* Reset ICT table. */
memset(sc->ict, 0, IWN_ICT_SIZE);
sc->ict_cur = 0;
/* Set physical address of ICT table (4KB aligned). */
DPRINTF(sc, IWN_DEBUG_RESET, "%s: enabling ICT\n", __func__);
IWN_WRITE(sc, IWN_DRAM_INT_TBL, IWN_DRAM_INT_TBL_ENABLE |
IWN_DRAM_INT_TBL_WRAP_CHECK | sc->ict_dma.paddr >> 12);
/* Enable periodic RX interrupt. */
sc->int_mask |= IWN_INT_RX_PERIODIC;
/* Switch to ICT interrupt mode in driver. */
sc->sc_flags |= IWN_FLAG_USE_ICT;
/* Re-enable interrupts. */
IWN_WRITE(sc, IWN_INT, 0xffffffff);
IWN_WRITE(sc, IWN_INT_MASK, sc->int_mask);
}
static int
iwn_read_eeprom(struct iwn_softc *sc, uint8_t macaddr[IEEE80211_ADDR_LEN])
{
struct iwn_ops *ops = &sc->ops;
uint16_t val;
int error;
/* Check whether adapter has an EEPROM or an OTPROM. */
if (sc->hw_type >= IWN_HW_REV_TYPE_1000 &&
(IWN_READ(sc, IWN_OTP_GP) & IWN_OTP_GP_DEV_SEL_OTP))
sc->sc_flags |= IWN_FLAG_HAS_OTPROM;
DPRINTF(sc, IWN_DEBUG_RESET, "%s found\n",
(sc->sc_flags & IWN_FLAG_HAS_OTPROM) ? "OTPROM" : "EEPROM");
/* Adapter has to be powered on for EEPROM access to work. */
if ((error = iwn_apm_init(sc)) != 0) {
device_printf(sc->sc_dev,
"%s: could not power ON adapter, error %d\n", __func__,
error);
return error;
}
if ((IWN_READ(sc, IWN_EEPROM_GP) & 0x7) == 0) {
device_printf(sc->sc_dev, "%s: bad ROM signature\n", __func__);
return EIO;
}
if ((error = iwn_eeprom_lock(sc)) != 0) {
device_printf(sc->sc_dev, "%s: could not lock ROM, error %d\n",
__func__, error);
return error;
}
if (sc->sc_flags & IWN_FLAG_HAS_OTPROM) {
if ((error = iwn_init_otprom(sc)) != 0) {
device_printf(sc->sc_dev,
"%s: could not initialize OTPROM, error %d\n",
__func__, error);
return error;
}
}
iwn_read_prom_data(sc, IWN_EEPROM_SKU_CAP, &val, 2);
DPRINTF(sc, IWN_DEBUG_RESET, "SKU capabilities=0x%04x\n", le16toh(val));
/* Check if HT support is bonded out. */
if (val & htole16(IWN_EEPROM_SKU_CAP_11N))
sc->sc_flags |= IWN_FLAG_HAS_11N;
iwn_read_prom_data(sc, IWN_EEPROM_RFCFG, &val, 2);
sc->rfcfg = le16toh(val);
DPRINTF(sc, IWN_DEBUG_RESET, "radio config=0x%04x\n", sc->rfcfg);
/* Read Tx/Rx chains from ROM unless it's known to be broken. */
if (sc->txchainmask == 0)
sc->txchainmask = IWN_RFCFG_TXANTMSK(sc->rfcfg);
if (sc->rxchainmask == 0)
sc->rxchainmask = IWN_RFCFG_RXANTMSK(sc->rfcfg);
/* Read MAC address. */
iwn_read_prom_data(sc, IWN_EEPROM_MAC, macaddr, 6);
/* Read adapter-specific information from EEPROM. */
ops->read_eeprom(sc);
iwn_apm_stop(sc); /* Power OFF adapter. */
iwn_eeprom_unlock(sc);
return 0;
}
static void
iwn4965_read_eeprom(struct iwn_softc *sc)
{
uint32_t addr;
uint16_t val;
int i;
/* Read regulatory domain (4 ASCII characters). */
iwn_read_prom_data(sc, IWN4965_EEPROM_DOMAIN, sc->eeprom_domain, 4);
/* Read the list of authorized channels (20MHz ones only). */
for (i = 0; i < 7; i++) {
addr = iwn4965_regulatory_bands[i];
iwn_read_eeprom_channels(sc, i, addr);
}
/* Read maximum allowed TX power for 2GHz and 5GHz bands. */
iwn_read_prom_data(sc, IWN4965_EEPROM_MAXPOW, &val, 2);
sc->maxpwr2GHz = val & 0xff;
sc->maxpwr5GHz = val >> 8;
/* Check that EEPROM values are within valid range. */
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 samples for each TX power group. */
iwn_read_prom_data(sc, IWN4965_EEPROM_BANDS, sc->bands,
sizeof sc->bands);
/* Read voltage at which samples were taken. */
iwn_read_prom_data(sc, IWN4965_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);
#ifdef IWN_DEBUG
/* Print samples. */
if (sc->sc_debug & IWN_DEBUG_ANY) {
for (i = 0; i < IWN_NBANDS; i++)
iwn4965_print_power_group(sc, i);
}
#endif
}
#ifdef IWN_DEBUG
static void
iwn4965_print_power_group(struct iwn_softc *sc, int i)
{
struct iwn4965_eeprom_band *band = &sc->bands[i];
struct iwn4965_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 < 2; 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 < 2; 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
static void
iwn5000_read_eeprom(struct iwn_softc *sc)
{
struct iwn5000_eeprom_calib_hdr hdr;
int32_t volt;
uint32_t base, addr;
uint16_t val;
int i;
/* Read regulatory domain (4 ASCII characters). */
iwn_read_prom_data(sc, IWN5000_EEPROM_REG, &val, 2);
base = le16toh(val);
iwn_read_prom_data(sc, base + IWN5000_EEPROM_DOMAIN,
sc->eeprom_domain, 4);
/* Read the list of authorized channels (20MHz ones only). */
for (i = 0; i < 7; i++) {
if (sc->hw_type >= IWN_HW_REV_TYPE_6000)
addr = base + iwn6000_regulatory_bands[i];
else
addr = base + iwn5000_regulatory_bands[i];
iwn_read_eeprom_channels(sc, i, addr);
}
/* Read enhanced TX power information for 6000 Series. */
if (sc->hw_type >= IWN_HW_REV_TYPE_6000)
iwn_read_eeprom_enhinfo(sc);
iwn_read_prom_data(sc, IWN5000_EEPROM_CAL, &val, 2);
base = le16toh(val);
iwn_read_prom_data(sc, base, &hdr, sizeof hdr);
DPRINTF(sc, IWN_DEBUG_CALIBRATE,
"%s: calib version=%u pa type=%u voltage=%u\n", __func__,
hdr.version, hdr.pa_type, le16toh(hdr.volt));
sc->calib_ver = hdr.version;
if (sc->hw_type == IWN_HW_REV_TYPE_5150) {
/* Compute temperature offset. */
iwn_read_prom_data(sc, base + IWN5000_EEPROM_TEMP, &val, 2);
sc->eeprom_temp = le16toh(val);
iwn_read_prom_data(sc, base + IWN5000_EEPROM_VOLT, &val, 2);
volt = le16toh(val);
sc->temp_off = sc->eeprom_temp - (volt / -5);
DPRINTF(sc, IWN_DEBUG_CALIBRATE, "temp=%d volt=%d offset=%dK\n",
sc->eeprom_temp, volt, sc->temp_off);
} else {
/* Read crystal calibration. */
iwn_read_prom_data(sc, base + IWN5000_EEPROM_CRYSTAL,
&sc->eeprom_crystal, sizeof (uint32_t));
DPRINTF(sc, IWN_DEBUG_CALIBRATE, "crystal calibration 0x%08x\n",
le32toh(sc->eeprom_crystal));
}
}
/*
* Translate EEPROM flags to net80211.
*/
static uint32_t
iwn_eeprom_channel_flags(struct iwn_eeprom_chan *channel)
{
uint32_t nflags;
nflags = 0;
if ((channel->flags & IWN_EEPROM_CHAN_ACTIVE) == 0)
nflags |= IEEE80211_CHAN_PASSIVE;
if ((channel->flags & IWN_EEPROM_CHAN_IBSS) == 0)
nflags |= IEEE80211_CHAN_NOADHOC;
if (channel->flags & IWN_EEPROM_CHAN_RADAR) {
nflags |= IEEE80211_CHAN_DFS;
/* XXX apparently IBSS may still be marked */
nflags |= IEEE80211_CHAN_NOADHOC;
}
return nflags;
}
static void
iwn_read_eeprom_band(struct iwn_softc *sc, int n)
{
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
struct iwn_eeprom_chan *channels = sc->eeprom_channels[n];
const struct iwn_chan_band *band = &iwn_bands[n];
struct ieee80211_channel *c;
uint8_t chan;
int i, nflags;
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];
nflags = iwn_eeprom_channel_flags(&channels[i]);
c = &ic->ic_channels[ic->ic_nchans++];
c->ic_ieee = chan;
c->ic_maxregpower = channels[i].maxpwr;
c->ic_maxpower = 2*c->ic_maxregpower;
if (n == 0) { /* 2GHz band */
c->ic_freq = ieee80211_ieee2mhz(chan, IEEE80211_CHAN_G);
/* G =>'s B is supported */
c->ic_flags = IEEE80211_CHAN_B | nflags;
c = &ic->ic_channels[ic->ic_nchans++];
c[0] = c[-1];
c->ic_flags = IEEE80211_CHAN_G | nflags;
} else { /* 5GHz band */
c->ic_freq = ieee80211_ieee2mhz(chan, IEEE80211_CHAN_A);
c->ic_flags = IEEE80211_CHAN_A | nflags;
}
/* Save maximum allowed TX power for this channel. */
sc->maxpwr[chan] = channels[i].maxpwr;
DPRINTF(sc, IWN_DEBUG_RESET,
"add chan %d flags 0x%x maxpwr %d\n", chan,
channels[i].flags, channels[i].maxpwr);
if (sc->sc_flags & IWN_FLAG_HAS_11N) {
/* add HT20, HT40 added separately */
c = &ic->ic_channels[ic->ic_nchans++];
c[0] = c[-1];
c->ic_flags |= IEEE80211_CHAN_HT20;
}
}
}
static void
iwn_read_eeprom_ht40(struct iwn_softc *sc, int n)
{
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
struct iwn_eeprom_chan *channels = sc->eeprom_channels[n];
const struct iwn_chan_band *band = &iwn_bands[n];
struct ieee80211_channel *c, *cent, *extc;
uint8_t chan;
int i, nflags;
if (!(sc->sc_flags & IWN_FLAG_HAS_11N))
return;
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];
nflags = iwn_eeprom_channel_flags(&channels[i]);
/*
* Each entry defines an HT40 channel pair; find the
* center channel, then the extension channel above.
*/
cent = ieee80211_find_channel_byieee(ic, chan,
(n == 5 ? IEEE80211_CHAN_G : IEEE80211_CHAN_A));
if (cent == NULL) { /* XXX shouldn't happen */
device_printf(sc->sc_dev,
"%s: no entry for channel %d\n", __func__, chan);
continue;
}
extc = ieee80211_find_channel(ic, cent->ic_freq+20,
(n == 5 ? IEEE80211_CHAN_G : IEEE80211_CHAN_A));
if (extc == NULL) {
DPRINTF(sc, IWN_DEBUG_RESET,
"%s: skip chan %d, extension channel not found\n",
__func__, chan);
continue;
}
DPRINTF(sc, IWN_DEBUG_RESET,
"add ht40 chan %d flags 0x%x maxpwr %d\n",
chan, 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 | nflags;
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 | nflags;
}
}
static void
iwn_read_eeprom_channels(struct iwn_softc *sc, int n, uint32_t addr)
{
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
iwn_read_prom_data(sc, addr, &sc->eeprom_channels[n],
iwn_bands[n].nchan * sizeof (struct iwn_eeprom_chan));
if (n < 5)
iwn_read_eeprom_band(sc, n);
else
iwn_read_eeprom_ht40(sc, n);
ieee80211_sort_channels(ic->ic_channels, ic->ic_nchans);
}
static struct iwn_eeprom_chan *
iwn_find_eeprom_channel(struct iwn_softc *sc, struct ieee80211_channel *c)
{
int band, chan, i, j;
if (IEEE80211_IS_CHAN_HT40(c)) {
band = IEEE80211_IS_CHAN_5GHZ(c) ? 6 : 5;
if (IEEE80211_IS_CHAN_HT40D(c))
chan = c->ic_extieee;
else
chan = c->ic_ieee;
for (i = 0; i < iwn_bands[band].nchan; i++) {
if (iwn_bands[band].chan[i] == chan)
return &sc->eeprom_channels[band][i];
}
} else {
for (j = 0; j < 5; j++) {
for (i = 0; i < iwn_bands[j].nchan; i++) {
if (iwn_bands[j].chan[i] == c->ic_ieee)
return &sc->eeprom_channels[j][i];
}
}
}
return NULL;
}
/*
* Enforce flags read from EEPROM.
*/
static int
iwn_setregdomain(struct ieee80211com *ic, struct ieee80211_regdomain *rd,
int nchan, struct ieee80211_channel chans[])
{
struct iwn_softc *sc = ic->ic_ifp->if_softc;
int i;
for (i = 0; i < nchan; i++) {
struct ieee80211_channel *c = &chans[i];
struct iwn_eeprom_chan *channel;
channel = iwn_find_eeprom_channel(sc, c);
if (channel == NULL) {
if_printf(ic->ic_ifp,
"%s: invalid channel %u freq %u/0x%x\n",
__func__, c->ic_ieee, c->ic_freq, c->ic_flags);
return EINVAL;
}
c->ic_flags |= iwn_eeprom_channel_flags(channel);
}
return 0;
}
#define nitems(_a) (sizeof((_a)) / sizeof((_a)[0]))
static void
iwn_read_eeprom_enhinfo(struct iwn_softc *sc)
{
struct iwn_eeprom_enhinfo enhinfo[35];
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
struct ieee80211_channel *c;
uint16_t val, base;
int8_t maxpwr;
uint8_t flags;
int i, j;
iwn_read_prom_data(sc, IWN5000_EEPROM_REG, &val, 2);
base = le16toh(val);
iwn_read_prom_data(sc, base + IWN6000_EEPROM_ENHINFO,
enhinfo, sizeof enhinfo);
for (i = 0; i < nitems(enhinfo); i++) {
flags = enhinfo[i].flags;
if (!(flags & IWN_ENHINFO_VALID))
continue; /* Skip invalid entries. */
maxpwr = 0;
if (sc->txchainmask & IWN_ANT_A)
maxpwr = MAX(maxpwr, enhinfo[i].chain[0]);
if (sc->txchainmask & IWN_ANT_B)
maxpwr = MAX(maxpwr, enhinfo[i].chain[1]);
if (sc->txchainmask & IWN_ANT_C)
maxpwr = MAX(maxpwr, enhinfo[i].chain[2]);
if (sc->ntxchains == 2)
maxpwr = MAX(maxpwr, enhinfo[i].mimo2);
else if (sc->ntxchains == 3)
maxpwr = MAX(maxpwr, enhinfo[i].mimo3);
for (j = 0; j < ic->ic_nchans; j++) {
c = &ic->ic_channels[j];
if ((flags & IWN_ENHINFO_5GHZ)) {
if (!IEEE80211_IS_CHAN_A(c))
continue;
} else if ((flags & IWN_ENHINFO_OFDM)) {
if (!IEEE80211_IS_CHAN_G(c))
continue;
} else if (!IEEE80211_IS_CHAN_B(c))
continue;
if ((flags & IWN_ENHINFO_HT40)) {
if (!IEEE80211_IS_CHAN_HT40(c))
continue;
} else {
if (IEEE80211_IS_CHAN_HT40(c))
continue;
}
if (enhinfo[i].chan != 0 &&
enhinfo[i].chan != c->ic_ieee)
continue;
DPRINTF(sc, IWN_DEBUG_RESET,
"channel %d(%x), maxpwr %d\n", c->ic_ieee,
c->ic_flags, maxpwr / 2);
c->ic_maxregpower = maxpwr / 2;
c->ic_maxpower = maxpwr;
}
}
}
static 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);
}
static __inline int
rate2plcp(int rate)
{
switch (rate & 0xff) {
case 12: return 0xd;
case 18: return 0xf;
case 24: return 0x5;
case 36: return 0x7;
case 48: return 0x9;
case 72: return 0xb;
case 96: return 0x1;
case 108: return 0x3;
case 2: return 10;
case 4: return 20;
case 11: return 55;
case 22: return 110;
}
return 0;
}
static void
iwn_newassoc(struct ieee80211_node *ni, int isnew)
{
#define RV(v) ((v) & IEEE80211_RATE_VAL)
struct ieee80211com *ic = ni->ni_ic;
struct iwn_softc *sc = ic->ic_ifp->if_softc;
struct iwn_node *wn = (void *)ni;
uint8_t txant1, txant2;
int i, plcp, rate, ridx;
/* Use the first valid TX antenna. */
txant1 = IWN_LSB(sc->txchainmask);
txant2 = IWN_LSB(sc->txchainmask & ~txant1);
if (IEEE80211_IS_CHAN_HT(ni->ni_chan)) {
ridx = ni->ni_rates.rs_nrates - 1;
for (i = ni->ni_htrates.rs_nrates - 1; i >= 0; i--) {
plcp = RV(ni->ni_htrates.rs_rates[i]) | IWN_RFLAG_MCS;
if (IEEE80211_IS_CHAN_HT40(ni->ni_chan)) {
plcp |= IWN_RFLAG_HT40;
if (ni->ni_htcap & IEEE80211_HTCAP_SHORTGI40)
plcp |= IWN_RFLAG_SGI;
} else if (ni->ni_htcap & IEEE80211_HTCAP_SHORTGI20)
plcp |= IWN_RFLAG_SGI;
if (i > 7)
plcp |= IWN_RFLAG_ANT(txant1 | txant2);
else
plcp |= IWN_RFLAG_ANT(txant1);
if (ridx >= 0) {
rate = RV(ni->ni_rates.rs_rates[ridx]);
wn->ridx[rate] = plcp;
}
wn->ridx[IEEE80211_RATE_MCS | i] = plcp;
ridx--;
}
} else {
for (i = 0; i < ni->ni_rates.rs_nrates; i++) {
rate = RV(ni->ni_rates.rs_rates[i]);
plcp = rate2plcp(rate);
ridx = ic->ic_rt->rateCodeToIndex[rate];
if (ridx < IWN_RIDX_OFDM6 &&
IEEE80211_IS_CHAN_2GHZ(ni->ni_chan))
plcp |= IWN_RFLAG_CCK;
plcp |= IWN_RFLAG_ANT(txant1);
wn->ridx[rate] = htole32(plcp);
}
}
#undef RV
}
static int
iwn_media_change(struct ifnet *ifp)
{
int error;
error = ieee80211_media_change(ifp);
/* NB: only the fixed rate can change and that doesn't need a reset */
return (error == ENETRESET ? 0 : error);
}
static 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 = 0;
DPRINTF(sc, IWN_DEBUG_STATE, "%s: %s -> %s\n", __func__,
ieee80211_state_name[vap->iv_state], ieee80211_state_name[nstate]);
IEEE80211_UNLOCK(ic);
IWN_LOCK(sc);
callout_stop(&sc->calib_to);
switch (nstate) {
case IEEE80211_S_ASSOC:
if (vap->iv_state != IEEE80211_S_RUN)
break;
/* FALLTHROUGH */
case IEEE80211_S_AUTH:
if (vap->iv_state == IEEE80211_S_AUTH)
break;
/*
* !AUTH -> AUTH transition requires state reset to handle
* reassociations correctly.
*/
sc->rxon.associd = 0;
sc->rxon.filter &= ~htole32(IWN_FILTER_BSS);
sc->calib.state = IWN_CALIB_STATE_INIT;
if ((error = iwn_auth(sc, vap)) != 0) {
device_printf(sc->sc_dev,
"%s: could not move to auth state\n", __func__);
}
break;
case IEEE80211_S_RUN:
/*
* RUN -> RUN transition; Just restart the timers.
*/
if (vap->iv_state == IEEE80211_S_RUN) {
sc->calib_cnt = 0;
break;
}
/*
* !RUN -> RUN requires setting the association id
* which is done with a firmware cmd. We also defer
* starting the timers until that work is done.
*/
if ((error = iwn_run(sc, vap)) != 0) {
device_printf(sc->sc_dev,
"%s: could not move to run state\n", __func__);
}
break;
case IEEE80211_S_INIT:
sc->calib.state = IWN_CALIB_STATE_INIT;
break;
default:
break;
}
IWN_UNLOCK(sc);
IEEE80211_LOCK(ic);
if (error != 0)
return error;
return ivp->iv_newstate(vap, nstate, arg);
}
static void
iwn_calib_timeout(void *arg)
{
struct iwn_softc *sc = arg;
IWN_LOCK_ASSERT(sc);
/* Force automatic TX power calibration every 60 secs. */
if (++sc->calib_cnt >= 120) {
uint32_t flags = 0;
DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s\n",
"sending request for statistics");
(void)iwn_cmd(sc, IWN_CMD_GET_STATISTICS, &flags,
sizeof flags, 1);
sc->calib_cnt = 0;
}
callout_reset(&sc->calib_to, msecs_to_ticks(500), iwn_calib_timeout,
sc);
}
/*
* Process an RX_PHY firmware notification. This is usually immediately
* followed by an MPDU_RX_DONE notification.
*/
static void
iwn_rx_phy(struct iwn_softc *sc, struct iwn_rx_desc *desc,
struct iwn_rx_data *data)
{
struct iwn_rx_stat *stat = (struct iwn_rx_stat *)(desc + 1);
DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s: received PHY stats\n", __func__);
bus_dmamap_sync(sc->rxq.data_dmat, data->map, BUS_DMASYNC_POSTREAD);
/* Save RX statistics, they will be used on MPDU_RX_DONE. */
memcpy(&sc->last_rx_stat, stat, sizeof (*stat));
sc->last_rx_valid = 1;
}
/*
* Process an RX_DONE (4965AGN only) or MPDU_RX_DONE firmware notification.
* Each MPDU_RX_DONE notification must be preceded by an RX_PHY one.
*/
static void
iwn_rx_done(struct iwn_softc *sc, struct iwn_rx_desc *desc,
struct iwn_rx_data *data)
{
struct iwn_ops *ops = &sc->ops;
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, *m1;
struct iwn_rx_stat *stat;
caddr_t head;
bus_addr_t paddr;
uint32_t flags;
int error, len, rssi, nf;
if (desc->type == IWN_MPDU_RX_DONE) {
/* Check for prior RX_PHY notification. */
if (!sc->last_rx_valid) {
DPRINTF(sc, IWN_DEBUG_ANY,
"%s: missing RX_PHY\n", __func__);
return;
}
stat = &sc->last_rx_stat;
} else
stat = (struct iwn_rx_stat *)(desc + 1);
bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTREAD);
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);
return;
}
if (desc->type == IWN_MPDU_RX_DONE) {
struct iwn_rx_mpdu *mpdu = (struct iwn_rx_mpdu *)(desc + 1);
head = (caddr_t)(mpdu + 1);
len = le16toh(mpdu->len);
} else {
head = (caddr_t)(stat + 1) + stat->cfg_phy_len;
len = le16toh(stat->len);
}
flags = le32toh(*(uint32_t *)(head + len));
/* Discard frames with a bad FCS early. */
if ((flags & IWN_RX_NOERROR) != IWN_RX_NOERROR) {
DPRINTF(sc, IWN_DEBUG_RECV, "%s: RX flags error %x\n",
__func__, flags);
ifp->if_ierrors++;
return;
}
/* Discard frames that are too short. */
if (len < sizeof (*wh)) {
DPRINTF(sc, IWN_DEBUG_RECV, "%s: frame too short: %d\n",
__func__, len);
ifp->if_ierrors++;
return;
}
m1 = m_getjcl(M_DONTWAIT, MT_DATA, M_PKTHDR, IWN_RBUF_SIZE);
if (m1 == NULL) {
DPRINTF(sc, IWN_DEBUG_ANY, "%s: no mbuf to restock ring\n",
__func__);
ifp->if_ierrors++;
return;
}
bus_dmamap_unload(ring->data_dmat, data->map);
error = bus_dmamap_load(ring->data_dmat, data->map, mtod(m1, void *),
IWN_RBUF_SIZE, 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(m1);
/* Try to reload the old mbuf. */
error = bus_dmamap_load(ring->data_dmat, data->map,
mtod(data->m, void *), IWN_RBUF_SIZE, iwn_dma_map_addr,
&paddr, BUS_DMA_NOWAIT);
if (error != 0 && error != EFBIG) {
panic("%s: could not load old RX mbuf", __func__);
}
/* Physical address may have changed. */
ring->desc[ring->cur] = htole32(paddr >> 8);
bus_dmamap_sync(ring->data_dmat, ring->desc_dma.map,
BUS_DMASYNC_PREWRITE);
ifp->if_ierrors++;
return;
}
m = data->m;
data->m = m1;
/* Update RX descriptor. */
ring->desc[ring->cur] = htole32(paddr >> 8);
bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
BUS_DMASYNC_PREWRITE);
/* Finalize mbuf. */
m->m_pkthdr.rcvif = ifp;
m->m_data = head;
m->m_pkthdr.len = m->m_len = len;
/* 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;
rssi = ops->get_rssi(sc, stat);
if (ieee80211_radiotap_active(ic)) {
struct iwn_rx_radiotap_header *tap = &sc->sc_rxtap;
tap->wr_flags = 0;
if (stat->flags & htole16(IWN_STAT_FLAG_SHPREAMBLE))
tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
tap->wr_dbm_antsignal = (int8_t)rssi;
tap->wr_dbm_antnoise = (int8_t)nf;
tap->wr_tsft = stat->tstamp;
switch (stat->rate) {
/* CCK rates. */
case 10: tap->wr_rate = 2; break;
case 20: tap->wr_rate = 4; break;
case 55: tap->wr_rate = 11; break;
case 110: tap->wr_rate = 22; break;
/* OFDM rates. */
case 0xd: tap->wr_rate = 12; break;
case 0xf: tap->wr_rate = 18; break;
case 0x5: tap->wr_rate = 24; break;
case 0x7: tap->wr_rate = 36; break;
case 0x9: tap->wr_rate = 48; break;
case 0xb: tap->wr_rate = 72; break;
case 0x1: tap->wr_rate = 96; break;
case 0x3: tap->wr_rate = 108; break;
/* Unknown rate: should not happen. */
default: tap->wr_rate = 0;
}
}
IWN_UNLOCK(sc);
/* Send the frame to the 802.11 layer. */
if (ni != NULL) {
if (ni->ni_flags & IEEE80211_NODE_HT)
m->m_flags |= M_AMPDU;
(void)ieee80211_input(ni, m, rssi - nf, nf);
/* Node is no longer needed. */
ieee80211_free_node(ni);
} else
(void)ieee80211_input_all(ic, m, rssi - nf, nf);
IWN_LOCK(sc);
}
/* Process an incoming Compressed BlockAck. */
static void
iwn_rx_compressed_ba(struct iwn_softc *sc, struct iwn_rx_desc *desc,
struct iwn_rx_data *data)
{
struct ifnet *ifp = sc->sc_ifp;
struct iwn_node *wn;
struct ieee80211_node *ni;
struct iwn_compressed_ba *ba = (struct iwn_compressed_ba *)(desc + 1);
struct iwn_tx_ring *txq;
struct ieee80211_tx_ampdu *tap;
uint64_t bitmap;
uint8_t tid;
int ackfailcnt = 0, i, shift;
bus_dmamap_sync(sc->rxq.data_dmat, data->map, BUS_DMASYNC_POSTREAD);
txq = &sc->txq[le16toh(ba->qid)];
tap = sc->qid2tap[le16toh(ba->qid)];
tid = WME_AC_TO_TID(tap->txa_ac);
ni = tap->txa_ni;
wn = (void *)ni;
if (wn->agg[tid].bitmap == 0)
return;
shift = wn->agg[tid].startidx - ((le16toh(ba->seq) >> 4) & 0xff);
if (shift < 0)
shift += 0x100;
if (wn->agg[tid].nframes > (64 - shift))
return;
bitmap = (le64toh(ba->bitmap) >> shift) & wn->agg[tid].bitmap;
for (i = 0; bitmap; i++) {
if ((bitmap & 1) == 0) {
ifp->if_oerrors++;
ieee80211_ratectl_tx_complete(ni->ni_vap, ni,
IEEE80211_RATECTL_TX_FAILURE, &ackfailcnt, NULL);
} else {
ifp->if_opackets++;
ieee80211_ratectl_tx_complete(ni->ni_vap, ni,
IEEE80211_RATECTL_TX_SUCCESS, &ackfailcnt, NULL);
}
bitmap >>= 1;
}
}
/*
* Process a CALIBRATION_RESULT notification sent by the initialization
* firmware on response to a CMD_CALIB_CONFIG command (5000 only).
*/
static void
iwn5000_rx_calib_results(struct iwn_softc *sc, struct iwn_rx_desc *desc,
struct iwn_rx_data *data)
{
struct iwn_phy_calib *calib = (struct iwn_phy_calib *)(desc + 1);
int len, idx = -1;
/* Runtime firmware should not send such a notification. */
if (sc->sc_flags & IWN_FLAG_CALIB_DONE)
return;
len = (le32toh(desc->len) & 0x3fff) - 4;
bus_dmamap_sync(sc->rxq.data_dmat, data->map, BUS_DMASYNC_POSTREAD);
switch (calib->code) {
case IWN5000_PHY_CALIB_DC:
if ((sc->sc_flags & IWN_FLAG_INTERNAL_PA) == 0 &&
(sc->hw_type == IWN_HW_REV_TYPE_5150 ||
sc->hw_type >= IWN_HW_REV_TYPE_6000))
idx = 0;
break;
case IWN5000_PHY_CALIB_LO:
idx = 1;
break;
case IWN5000_PHY_CALIB_TX_IQ:
idx = 2;
break;
case IWN5000_PHY_CALIB_TX_IQ_PERIODIC:
if (sc->hw_type < IWN_HW_REV_TYPE_6000 &&
sc->hw_type != IWN_HW_REV_TYPE_5150)
idx = 3;
break;
case IWN5000_PHY_CALIB_BASE_BAND:
idx = 4;
break;
}
if (idx == -1) /* Ignore other results. */
return;
/* Save calibration result. */
if (sc->calibcmd[idx].buf != NULL)
free(sc->calibcmd[idx].buf, M_DEVBUF);
sc->calibcmd[idx].buf = malloc(len, M_DEVBUF, M_NOWAIT);
if (sc->calibcmd[idx].buf == NULL) {
DPRINTF(sc, IWN_DEBUG_CALIBRATE,
"not enough memory for calibration result %d\n",
calib->code);
return;
}
DPRINTF(sc, IWN_DEBUG_CALIBRATE,
"saving calibration result code=%d len=%d\n", calib->code, len);
sc->calibcmd[idx].len = len;
memcpy(sc->calibcmd[idx].buf, calib, len);
}
/*
* Process an RX_STATISTICS or BEACON_STATISTICS firmware notification.
* The latter is sent by the firmware after each received beacon.
*/
static void
iwn_rx_statistics(struct iwn_softc *sc, struct iwn_rx_desc *desc,
struct iwn_rx_data *data)
{
struct iwn_ops *ops = &sc->ops;
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);
int temp;
/* Ignore statistics received during a scan. */
if (vap->iv_state != IEEE80211_S_RUN ||
(ic->ic_flags & IEEE80211_F_SCAN))
return;
bus_dmamap_sync(sc->rxq.data_dmat, data->map, BUS_DMASYNC_POSTREAD);
DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s: received statistics, cmd %d\n",
__func__, desc->type);
sc->calib_cnt = 0; /* Reset TX power calibration timeout. */
/* Test if temperature has changed. */
if (stats->general.temp != sc->rawtemp) {
/* Convert "raw" temperature to degC. */
sc->rawtemp = stats->general.temp;
temp = ops->get_temperature(sc);
DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s: temperature %d\n",
__func__, temp);
/* Update TX power if need be (4965AGN only). */
if (sc->hw_type == IWN_HW_REV_TYPE_4965)
iwn4965_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 (le32toh(stats->rx.general.flags) != 1) {
DPRINTF(sc, IWN_DEBUG_ANY, "%s\n",
"received statistics without RSSI");
return;
}
if (calib->state == IWN_CALIB_STATE_ASSOC)
iwn_collect_noise(sc, &stats->rx.general);
else if (calib->state == IWN_CALIB_STATE_RUN)
iwn_tune_sensitivity(sc, &stats->rx);
}
/*
* Process a TX_DONE firmware notification. Unfortunately, the 4965AGN
* and 5000 adapters have different incompatible TX status formats.
*/
static void
iwn4965_tx_done(struct iwn_softc *sc, struct iwn_rx_desc *desc,
struct iwn_rx_data *data)
{
struct iwn4965_tx_stat *stat = (struct iwn4965_tx_stat *)(desc + 1);
struct iwn_tx_ring *ring;
int qid;
qid = desc->qid & 0xf;
ring = &sc->txq[qid];
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->ackfailcnt,
stat->btkillcnt, stat->rate, le16toh(stat->duration),
le32toh(stat->status));
bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTREAD);
if (qid >= sc->firstaggqueue) {
iwn_ampdu_tx_done(sc, qid, desc->idx, stat->nframes,
&stat->status);
} else {
iwn_tx_done(sc, desc, stat->ackfailcnt,
le32toh(stat->status) & 0xff);
}
}
static void
iwn5000_tx_done(struct iwn_softc *sc, struct iwn_rx_desc *desc,
struct iwn_rx_data *data)
{
struct iwn5000_tx_stat *stat = (struct iwn5000_tx_stat *)(desc + 1);
struct iwn_tx_ring *ring;
int qid;
qid = desc->qid & 0xf;
ring = &sc->txq[qid];
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->ackfailcnt,
stat->btkillcnt, stat->rate, le16toh(stat->duration),
le32toh(stat->status));
#ifdef notyet
/* Reset TX scheduler slot. */
iwn5000_reset_sched(sc, desc->qid & 0xf, desc->idx);
#endif
bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTREAD);
if (qid >= sc->firstaggqueue) {
iwn_ampdu_tx_done(sc, qid, desc->idx, stat->nframes,
&stat->status);
} else {
iwn_tx_done(sc, desc, stat->ackfailcnt,
le16toh(stat->status) & 0xff);
}
}
/*
* Adapter-independent backend for TX_DONE firmware notifications.
*/
static void
iwn_tx_done(struct iwn_softc *sc, struct iwn_rx_desc *desc, int ackfailcnt,
uint8_t status)
{
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 mbuf *m;
struct ieee80211_node *ni;
struct ieee80211vap *vap;
KASSERT(data->ni != NULL, ("no node"));
/* Unmap and free mbuf. */
bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(ring->data_dmat, data->map);
m = data->m, data->m = NULL;
ni = data->ni, data->ni = NULL;
vap = ni->ni_vap;
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);
}
/*
* Update rate control statistics for the node.
*/
if (status & IWN_TX_FAIL) {
ifp->if_oerrors++;
ieee80211_ratectl_tx_complete(vap, ni,
IEEE80211_RATECTL_TX_FAILURE, &ackfailcnt, NULL);
} else {
ifp->if_opackets++;
ieee80211_ratectl_tx_complete(vap, ni,
IEEE80211_RATECTL_TX_SUCCESS, &ackfailcnt, NULL);
}
m_freem(m);
ieee80211_free_node(ni);
sc->sc_tx_timer = 0;
if (--ring->queued < IWN_TX_RING_LOMARK) {
sc->qfullmsk &= ~(1 << ring->qid);
if (sc->qfullmsk == 0 &&
(ifp->if_drv_flags & IFF_DRV_OACTIVE)) {
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
iwn_start_locked(ifp);
}
}
}
/*
* Process a "command done" firmware notification. This is where we wakeup
* processes waiting for a synchronous command completion.
*/
static void
iwn_cmd_done(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 an mbuf, free it. */
if (data->m != NULL) {
bus_dmamap_sync(ring->data_dmat, data->map,
BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(ring->data_dmat, data->map);
m_freem(data->m);
data->m = NULL;
}
wakeup(&ring->desc[desc->idx]);
}
static void
iwn_ampdu_tx_done(struct iwn_softc *sc, int qid, int idx, int nframes,
void *stat)
{
struct ifnet *ifp = sc->sc_ifp;
struct iwn_tx_ring *ring = &sc->txq[qid];
struct iwn_tx_data *data;
struct mbuf *m;
struct iwn_node *wn;
struct ieee80211_node *ni;
struct ieee80211vap *vap;
struct ieee80211_tx_ampdu *tap;
uint64_t bitmap;
uint32_t *status = stat;
uint16_t *aggstatus = stat;
uint8_t tid;
int bit, i, lastidx, seqno, shift, start;
#ifdef NOT_YET
if (nframes == 1) {
if ((*status & 0xff) != 1 && (*status & 0xff) != 2)
printf("ieee80211_send_bar()\n");
}
#endif
bitmap = 0;
start = idx;
for (i = 0; i < nframes; i++) {
if (le16toh(aggstatus[i * 2]) & 0xc)
continue;
idx = le16toh(aggstatus[2*i + 1]) & 0xff;
bit = idx - start;
shift = 0;
if (bit >= 64) {
shift = 0x100 - idx + start;
bit = 0;
start = idx;
} else if (bit <= -64)
bit = 0x100 - start + idx;
else if (bit < 0) {
shift = start - idx;
start = idx;
bit = 0;
}
bitmap = bitmap << shift;
bitmap |= 1ULL << bit;
}
tap = sc->qid2tap[qid];
tid = WME_AC_TO_TID(tap->txa_ac);
wn = (void *)tap->txa_ni;
wn->agg[tid].bitmap = bitmap;
wn->agg[tid].startidx = start;
wn->agg[tid].nframes = nframes;
seqno = le32toh(*(status + nframes)) & 0xfff;
for (lastidx = (seqno & 0xff); ring->read != lastidx;) {
data = &ring->data[ring->read];
KASSERT(data->ni != NULL, ("no node"));
/* Unmap and free mbuf. */
bus_dmamap_sync(ring->data_dmat, data->map,
BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(ring->data_dmat, data->map);
m = data->m, data->m = NULL;
ni = data->ni, data->ni = NULL;
vap = ni->ni_vap;
if (m->m_flags & M_TXCB)
ieee80211_process_callback(ni, m, 1);
m_freem(m);
ieee80211_free_node(ni);
ring->queued--;
ring->read = (ring->read + 1) % IWN_TX_RING_COUNT;
}
sc->sc_tx_timer = 0;
if (ring->queued < IWN_TX_RING_LOMARK) {
sc->qfullmsk &= ~(1 << ring->qid);
if (sc->qfullmsk == 0 &&
(ifp->if_drv_flags & IFF_DRV_OACTIVE)) {
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
iwn_start_locked(ifp);
}
}
}
/*
* Process an INT_FH_RX or INT_SW_RX interrupt.
*/
static void
iwn_notif_intr(struct iwn_softc *sc)
{
struct iwn_ops *ops = &sc->ops;
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
uint16_t hw;
bus_dmamap_sync(sc->rxq.stat_dma.tag, sc->rxq.stat_dma.map,
BUS_DMASYNC_POSTREAD);
hw = le16toh(sc->rxq.stat->closed_count) & 0xfff;
while (sc->rxq.cur != hw) {
struct iwn_rx_data *data = &sc->rxq.data[sc->rxq.cur];
struct iwn_rx_desc *desc;
bus_dmamap_sync(sc->rxq.data_dmat, data->map,
BUS_DMASYNC_POSTREAD);
desc = mtod(data->m, struct iwn_rx_desc *);
DPRINTF(sc, IWN_DEBUG_RECV,
"%s: qid %x idx %d flags %x type %d(%s) len %d\n",
__func__, desc->qid & 0xf, desc->idx, desc->flags,
desc->type, iwn_intr_str(desc->type),
le16toh(desc->len));
if (!(desc->qid & 0x80)) /* Reply to a command. */
iwn_cmd_done(sc, desc);
switch (desc->type) {
case IWN_RX_PHY:
iwn_rx_phy(sc, desc, data);
break;
case IWN_RX_DONE: /* 4965AGN only. */
case IWN_MPDU_RX_DONE:
/* An 802.11 frame has been received. */
iwn_rx_done(sc, desc, data);
break;
case IWN_RX_COMPRESSED_BA:
/* A Compressed BlockAck has been received. */
iwn_rx_compressed_ba(sc, desc, data);
break;
case IWN_TX_DONE:
/* An 802.11 frame has been transmitted. */
ops->tx_done(sc, desc, data);
break;
case IWN_RX_STATISTICS:
case IWN_BEACON_STATISTICS:
iwn_rx_statistics(sc, desc, data);
break;
case IWN_BEACON_MISSED:
{
struct iwn_beacon_missed *miss =
(struct iwn_beacon_missed *)(desc + 1);
int misses;
bus_dmamap_sync(sc->rxq.data_dmat, data->map,
BUS_DMASYNC_POSTREAD);
misses = le32toh(miss->consecutive);
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 &&
(ic->ic_flags & IEEE80211_F_SCAN) == 0) {
if (misses > 5)
(void)iwn_init_sensitivity(sc);
if (misses >= vap->iv_bmissthreshold) {
IWN_UNLOCK(sc);
ieee80211_beacon_miss(ic);
IWN_LOCK(sc);
}
}
break;
}
case IWN_UC_READY:
{
struct iwn_ucode_info *uc =
(struct iwn_ucode_info *)(desc + 1);
/* The microcontroller is ready. */
bus_dmamap_sync(sc->rxq.data_dmat, data->map,
BUS_DMASYNC_POSTREAD);
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 report. */
memcpy(&sc->ucode_info, uc, sizeof (*uc));
}
/* Save the address of the error log in SRAM. */
sc->errptr = le32toh(uc->errptr);
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.
*/
bus_dmamap_sync(sc->rxq.data_dmat, data->map,
BUS_DMASYNC_POSTREAD);
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);
bus_dmamap_sync(sc->rxq.data_dmat, data->map,
BUS_DMASYNC_POSTREAD);
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);
bus_dmamap_sync(sc->rxq.data_dmat, data->map,
BUS_DMASYNC_POSTREAD);
DPRINTF(sc, IWN_DEBUG_STATE,
"scan finished nchan=%d status=%d chan=%d\n",
scan->nchan, scan->status, scan->chan);
IWN_UNLOCK(sc);
ieee80211_scan_next(vap);
IWN_LOCK(sc);
break;
}
case IWN5000_CALIBRATION_RESULT:
iwn5000_rx_calib_results(sc, desc, data);
break;
case IWN5000_CALIBRATION_DONE:
sc->sc_flags |= IWN_FLAG_CALIB_DONE;
wakeup(sc);
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_FH_RX_WPTR, hw & ~7);
}
/*
* Process an INT_WAKEUP interrupt raised when the microcontroller wakes up
* from power-down sleep mode.
*/
static void
iwn_wakeup_intr(struct iwn_softc *sc)
{
int qid;
DPRINTF(sc, IWN_DEBUG_RESET, "%s: ucode wakeup from power-down sleep\n",
__func__);
/* Wakeup RX and TX rings. */
IWN_WRITE(sc, IWN_FH_RX_WPTR, sc->rxq.cur & ~7);
for (qid = 0; qid < sc->ntxqs; qid++) {
struct iwn_tx_ring *ring = &sc->txq[qid];
IWN_WRITE(sc, IWN_HBUS_TARG_WRPTR, qid << 8 | ring->cur);
}
}
static void
iwn_rftoggle_intr(struct iwn_softc *sc)
{
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
uint32_t tmp = IWN_READ(sc, IWN_GP_CNTRL);
IWN_LOCK_ASSERT(sc);
device_printf(sc->sc_dev, "RF switch: radio %s\n",
(tmp & IWN_GP_CNTRL_RFKILL) ? "enabled" : "disabled");
if (tmp & IWN_GP_CNTRL_RFKILL)
ieee80211_runtask(ic, &sc->sc_radioon_task);
else
ieee80211_runtask(ic, &sc->sc_radiooff_task);
}
/*
* Dump the error log of the firmware when a firmware panic occurs. Although
* we can't debug the firmware because it is neither open source nor free, it
* can help us to identify certain classes of problems.
*/
static void
iwn_fatal_intr(struct iwn_softc *sc)
{
struct iwn_fw_dump dump;
int i;
IWN_LOCK_ASSERT(sc);
/* Force a complete recalibration on next init. */
sc->sc_flags &= ~IWN_FLAG_CALIB_DONE;
/* Check that the error log address is valid. */
if (sc->errptr < IWN_FW_DATA_BASE ||
sc->errptr + sizeof (dump) >
IWN_FW_DATA_BASE + sc->fw_data_maxsz) {
printf("%s: bad firmware error log address 0x%08x\n", __func__,
sc->errptr);
return;
}
if (iwn_nic_lock(sc) != 0) {
printf("%s: could not read firmware error log\n", __func__);
return;
}
/* Read firmware error log from SRAM. */
iwn_mem_read_region_4(sc, sc->errptr, (uint32_t *)&dump,
sizeof (dump) / sizeof (uint32_t));
iwn_nic_unlock(sc);
if (dump.valid == 0) {
printf("%s: firmware error log is empty\n", __func__);
return;
}
printf("firmware error log:\n");
printf(" error type = \"%s\" (0x%08X)\n",
(dump.id < nitems(iwn_fw_errmsg)) ?
iwn_fw_errmsg[dump.id] : "UNKNOWN",
dump.id);
printf(" program counter = 0x%08X\n", dump.pc);
printf(" source line = 0x%08X\n", dump.src_line);
printf(" error data = 0x%08X%08X\n",
dump.error_data[0], dump.error_data[1]);
printf(" branch link = 0x%08X%08X\n",
dump.branch_link[0], dump.branch_link[1]);
printf(" interrupt link = 0x%08X%08X\n",
dump.interrupt_link[0], dump.interrupt_link[1]);
printf(" time = %u\n", dump.time[0]);
/* Dump driver status (TX and RX rings) while we're here. */
printf("driver status:\n");
for (i = 0; i < sc->ntxqs; i++) {
struct iwn_tx_ring *ring = &sc->txq[i];
printf(" tx ring %2d: qid=%-2d cur=%-3d queued=%-3d\n",
i, ring->qid, ring->cur, ring->queued);
}
printf(" rx ring: cur=%d\n", sc->rxq.cur);
}
static void
iwn_intr(void *arg)
{
struct iwn_softc *sc = arg;
struct ifnet *ifp = sc->sc_ifp;
uint32_t r1, r2, tmp;
IWN_LOCK(sc);
/* Disable interrupts. */
IWN_WRITE(sc, IWN_INT_MASK, 0);
/* Read interrupts from ICT (fast) or from registers (slow). */
if (sc->sc_flags & IWN_FLAG_USE_ICT) {
tmp = 0;
while (sc->ict[sc->ict_cur] != 0) {
tmp |= sc->ict[sc->ict_cur];
sc->ict[sc->ict_cur] = 0; /* Acknowledge. */
sc->ict_cur = (sc->ict_cur + 1) % IWN_ICT_COUNT;
}
tmp = le32toh(tmp);
if (tmp == 0xffffffff) /* Shouldn't happen. */
tmp = 0;
else if (tmp & 0xc0000) /* Workaround a HW bug. */
tmp |= 0x8000;
r1 = (tmp & 0xff00) << 16 | (tmp & 0xff);
r2 = 0; /* Unused. */
} else {
r1 = IWN_READ(sc, IWN_INT);
if (r1 == 0xffffffff || (r1 & 0xfffffff0) == 0xa5a5a5a0)
return; /* Hardware gone! */
r2 = IWN_READ(sc, IWN_FH_INT);
}
DPRINTF(sc, IWN_DEBUG_INTR, "interrupt reg1=%x reg2=%x\n", r1, r2);
if (r1 == 0 && r2 == 0)
goto done; /* Interrupt not for us. */
/* Acknowledge interrupts. */
IWN_WRITE(sc, IWN_INT, r1);
if (!(sc->sc_flags & IWN_FLAG_USE_ICT))
IWN_WRITE(sc, IWN_FH_INT, r2);
if (r1 & IWN_INT_RF_TOGGLED) {
iwn_rftoggle_intr(sc);
goto done;
}
if (r1 & IWN_INT_CT_REACHED) {
device_printf(sc->sc_dev, "%s: critical temperature reached!\n",
__func__);
}
if (r1 & (IWN_INT_SW_ERR | IWN_INT_HW_ERR)) {
device_printf(sc->sc_dev, "%s: fatal firmware error\n",
__func__);
/* Dump firmware error log and stop. */
iwn_fatal_intr(sc);
ifp->if_flags &= ~IFF_UP;
iwn_stop_locked(sc);
goto done;
}
if ((r1 & (IWN_INT_FH_RX | IWN_INT_SW_RX | IWN_INT_RX_PERIODIC)) ||
(r2 & IWN_FH_INT_RX)) {
if (sc->sc_flags & IWN_FLAG_USE_ICT) {
if (r1 & (IWN_INT_FH_RX | IWN_INT_SW_RX))
IWN_WRITE(sc, IWN_FH_INT, IWN_FH_INT_RX);
IWN_WRITE_1(sc, IWN_INT_PERIODIC,
IWN_INT_PERIODIC_DIS);
iwn_notif_intr(sc);
if (r1 & (IWN_INT_FH_RX | IWN_INT_SW_RX)) {
IWN_WRITE_1(sc, IWN_INT_PERIODIC,
IWN_INT_PERIODIC_ENA);
}
} else
iwn_notif_intr(sc);
}
if ((r1 & IWN_INT_FH_TX) || (r2 & IWN_FH_INT_TX)) {
if (sc->sc_flags & IWN_FLAG_USE_ICT)
IWN_WRITE(sc, IWN_FH_INT, IWN_FH_INT_TX);
wakeup(sc); /* FH DMA transfer completed. */
}
if (r1 & IWN_INT_ALIVE)
wakeup(sc); /* Firmware is alive. */
if (r1 & IWN_INT_WAKEUP)
iwn_wakeup_intr(sc);
done:
/* Re-enable interrupts. */
if (ifp->if_flags & IFF_UP)
IWN_WRITE(sc, IWN_INT_MASK, sc->int_mask);
IWN_UNLOCK(sc);
}
/*
* Update TX scheduler ring when transmitting an 802.11 frame (4965AGN and
* 5000 adapters use a slightly different format).
*/
static void
iwn4965_update_sched(struct iwn_softc *sc, int qid, int idx, uint8_t id,
uint16_t len)
{
uint16_t *w = &sc->sched[qid * IWN4965_SCHED_COUNT + idx];
*w = htole16(len + 8);
bus_dmamap_sync(sc->sched_dma.tag, sc->sched_dma.map,
BUS_DMASYNC_PREWRITE);
if (idx < IWN_SCHED_WINSZ) {
*(w + IWN_TX_RING_COUNT) = *w;
bus_dmamap_sync(sc->sched_dma.tag, sc->sched_dma.map,
BUS_DMASYNC_PREWRITE);
}
}
static void
iwn5000_update_sched(struct iwn_softc *sc, int qid, int idx, uint8_t id,
uint16_t len)
{
uint16_t *w = &sc->sched[qid * IWN5000_SCHED_COUNT + idx];
*w = htole16(id << 12 | (len + 8));
bus_dmamap_sync(sc->sched_dma.tag, sc->sched_dma.map,
BUS_DMASYNC_PREWRITE);
if (idx < IWN_SCHED_WINSZ) {
*(w + IWN_TX_RING_COUNT) = *w;
bus_dmamap_sync(sc->sched_dma.tag, sc->sched_dma.map,
BUS_DMASYNC_PREWRITE);
}
}
#ifdef notyet
static void
iwn5000_reset_sched(struct iwn_softc *sc, int qid, int idx)
{
uint16_t *w = &sc->sched[qid * IWN5000_SCHED_COUNT + idx];
*w = (*w & htole16(0xf000)) | htole16(1);
bus_dmamap_sync(sc->sched_dma.tag, sc->sched_dma.map,
BUS_DMASYNC_PREWRITE);
if (idx < IWN_SCHED_WINSZ) {
*(w + IWN_TX_RING_COUNT) = *w;
bus_dmamap_sync(sc->sched_dma.tag, sc->sched_dma.map,
BUS_DMASYNC_PREWRITE);
}
}
#endif
static int
iwn_tx_data(struct iwn_softc *sc, struct mbuf *m, struct ieee80211_node *ni)
{
struct iwn_ops *ops = &sc->ops;
const struct ieee80211_txparam *tp;
struct ieee80211vap *vap = ni->ni_vap;
struct ieee80211com *ic = ni->ni_ic;
struct iwn_node *wn = (void *)ni;
struct iwn_tx_ring *ring;
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 = NULL;
struct mbuf *m1;
uint32_t flags;
uint16_t qos;
u_int hdrlen;
bus_dma_segment_t *seg, segs[IWN_MAX_SCATTER];
uint8_t tid, ridx, txant, type;
int ac, i, totlen, error, pad, nsegs = 0, rate;
IWN_LOCK_ASSERT(sc);
wh = mtod(m, struct ieee80211_frame *);
hdrlen = ieee80211_anyhdrsize(wh);
type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
/* Select EDCA Access Category and TX ring for this frame. */
if (IEEE80211_QOS_HAS_SEQ(wh)) {
qos = ((const struct ieee80211_qosframe *)wh)->i_qos[0];
tid = qos & IEEE80211_QOS_TID;
} else {
qos = 0;
tid = 0;
}
ac = M_WME_GETAC(m);
if (IEEE80211_QOS_HAS_SEQ(wh) &&
IEEE80211_AMPDU_RUNNING(&ni->ni_tx_ampdu[ac])) {
struct ieee80211_tx_ampdu *tap = &ni->ni_tx_ampdu[ac];
ring = &sc->txq[*(int *)tap->txa_private];
*(uint16_t *)wh->i_seq =
htole16(ni->ni_txseqs[tid] << IEEE80211_SEQ_SEQ_SHIFT);
ni->ni_txseqs[tid]++;
} else {
ring = &sc->txq[ac];
}
desc = &ring->desc[ring->cur];
data = &ring->data[ring->cur];
/* Choose a TX rate index. */
tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)];
if (type == IEEE80211_FC0_TYPE_MGT)
rate = tp->mgmtrate;
else if (IEEE80211_IS_MULTICAST(wh->i_addr1))
rate = tp->mcastrate;
else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE)
rate = tp->ucastrate;
else {
/* XXX pass pktlen */
(void) ieee80211_ratectl_rate(ni, NULL, 0);
rate = ni->ni_txrate;
}
ridx = ic->ic_rt->rateCodeToIndex[rate];
/* Encrypt the frame if need be. */
if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
/* Retrieve key for TX. */
k = ieee80211_crypto_encap(ni, m);
if (k == NULL) {
m_freem(m);
return ENOBUFS;
}
/* 802.11 header may have moved. */
wh = mtod(m, struct ieee80211_frame *);
}
totlen = m->m_pkthdr.len;
if (ieee80211_radiotap_active_vap(vap)) {
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;
ieee80211_radiotap_tx(vap, m);
}
/* Prepare TX firmware command. */
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 clear tx, all fields are reinitialized here. */
tx->scratch = 0; /* clear "scratch" area */
flags = 0;
if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
/* Unicast frame, check if an ACK is expected. */
if (!qos || (qos & IEEE80211_QOS_ACKPOLICY) !=
IEEE80211_QOS_ACKPOLICY_NOACK)
flags |= IWN_TX_NEED_ACK;
}
if ((wh->i_fc[0] &
(IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) ==
(IEEE80211_FC0_TYPE_CTL | IEEE80211_FC0_SUBTYPE_BAR))
flags |= IWN_TX_IMM_BA; /* Cannot happen yet. */
if (wh->i_fc[1] & IEEE80211_FC1_MORE_FRAG)
flags |= IWN_TX_MORE_FRAG; /* Cannot happen yet. */
/* Check if frame must be protected using RTS/CTS or CTS-to-self. */
if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
/* NB: Group frames are sent using CCK in 802.11b/g. */
if (totlen + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) {
flags |= IWN_TX_NEED_RTS;
} else if ((ic->ic_flags & IEEE80211_F_USEPROT) &&
ridx >= IWN_RIDX_OFDM6) {
if (ic->ic_protmode == IEEE80211_PROT_CTSONLY)
flags |= IWN_TX_NEED_CTS;
else if (ic->ic_protmode == IEEE80211_PROT_RTSCTS)
flags |= IWN_TX_NEED_RTS;
}
if (flags & (IWN_TX_NEED_RTS | IWN_TX_NEED_CTS)) {
if (sc->hw_type != IWN_HW_REV_TYPE_4965) {
/* 5000 autoselects RTS/CTS or CTS-to-self. */
flags &= ~(IWN_TX_NEED_RTS | IWN_TX_NEED_CTS);
flags |= IWN_TX_NEED_PROTECTION;
} else
flags |= IWN_TX_FULL_TXOP;
}
}
if (IEEE80211_IS_MULTICAST(wh->i_addr1) ||
type != IEEE80211_FC0_TYPE_DATA)
tx->id = sc->broadcast_id;
else
tx->id = wn->id;
if (type == IEEE80211_FC0_TYPE_MGT) {
uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
/* Tell HW to set timestamp in probe responses. */
if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP)
flags |= IWN_TX_INSERT_TSTAMP;
if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ ||
subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ)
tx->timeout = htole16(3);
else
tx->timeout = htole16(2);
} else
tx->timeout = htole16(0);
if (hdrlen & 3) {
/* First segment length must be a multiple of 4. */
flags |= IWN_TX_NEED_PADDING;
pad = 4 - (hdrlen & 3);
} else
pad = 0;
tx->len = htole16(totlen);
tx->tid = tid;
tx->rts_ntries = 60;
tx->data_ntries = 15;
tx->lifetime = htole32(IWN_LIFETIME_INFINITE);
tx->rate = wn->ridx[rate];
if (tx->id == sc->broadcast_id) {
/* Group or management frame. */
tx->linkq = 0;
/* XXX Alternate between antenna A and B? */
txant = IWN_LSB(sc->txchainmask);
tx->rate |= htole32(IWN_RFLAG_ANT(txant));
} else {
tx->linkq = ni->ni_rates.rs_nrates - ridx - 1;
flags |= IWN_TX_LINKQ; /* enable MRR */
}
/* Set physical address of "scratch area". */
tx->loaddr = htole32(IWN_LOADDR(data->scratch_paddr));
tx->hiaddr = IWN_HIADDR(data->scratch_paddr);
/* Copy 802.11 header in TX command. */
memcpy((uint8_t *)(tx + 1), wh, hdrlen);
/* Trim 802.11 header. */
m_adj(m, hdrlen);
tx->security = 0;
tx->flags = htole32(flags);
error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, m, segs,
&nsegs, BUS_DMA_NOWAIT);
if (error != 0) {
if (error != EFBIG) {
device_printf(sc->sc_dev,
"%s: can't map mbuf (error %d)\n", __func__, error);
m_freem(m);
return error;
}
/* Too many DMA segments, linearize mbuf. */
m1 = m_collapse(m, M_DONTWAIT, IWN_MAX_SCATTER);
if (m1 == NULL) {
device_printf(sc->sc_dev,
"%s: could not defrag mbuf\n", __func__);
m_freem(m);
return ENOBUFS;
}
m = m1;
error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, m,
segs, &nsegs, BUS_DMA_NOWAIT);
if (error != 0) {
device_printf(sc->sc_dev,
"%s: can't map mbuf (error %d)\n", __func__, error);
m_freem(m);
return error;
}
}
data->m = m;
data->ni = ni;
DPRINTF(sc, IWN_DEBUG_XMIT, "%s: qid %d idx %d len %d nsegs %d\n",
__func__, ring->qid, ring->cur, m->m_pkthdr.len, nsegs);
/* Fill TX descriptor. */
desc->nsegs = 1;
if (m->m_len != 0)
desc->nsegs += nsegs;
/* First DMA segment is used by the TX command. */
desc->segs[0].addr = htole32(IWN_LOADDR(data->cmd_paddr));
desc->segs[0].len = htole16(IWN_HIADDR(data->cmd_paddr) |
(4 + sizeof (*tx) + hdrlen + pad) << 4);
/* Other DMA segments are for data payload. */
seg = &segs[0];
for (i = 1; i <= nsegs; i++) {
desc->segs[i].addr = htole32(IWN_LOADDR(seg->ds_addr));
desc->segs[i].len = htole16(IWN_HIADDR(seg->ds_addr) |
seg->ds_len << 4);
seg++;
}
bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE);
bus_dmamap_sync(ring->data_dmat, ring->cmd_dma.map,
BUS_DMASYNC_PREWRITE);
bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
BUS_DMASYNC_PREWRITE);
/* Update TX scheduler. */
if (ring->qid >= sc->firstaggqueue)
ops->update_sched(sc, ring->qid, ring->cur, tx->id, totlen);
/* Kick TX ring. */
ring->cur = (ring->cur + 1) % IWN_TX_RING_COUNT;
IWN_WRITE(sc, IWN_HBUS_TARG_WRPTR, ring->qid << 8 | ring->cur);
/* Mark TX ring as full if we reach a certain threshold. */
if (++ring->queued > IWN_TX_RING_HIMARK)
sc->qfullmsk |= 1 << ring->qid;
return 0;
}
static int
iwn_tx_data_raw(struct iwn_softc *sc, struct mbuf *m,
struct ieee80211_node *ni, const struct ieee80211_bpf_params *params)
{
struct iwn_ops *ops = &sc->ops;
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211vap *vap = ni->ni_vap;
struct ieee80211com *ic = ifp->if_l2com;
struct iwn_tx_cmd *cmd;
struct iwn_cmd_data *tx;
struct ieee80211_frame *wh;
struct iwn_tx_ring *ring;
struct iwn_tx_desc *desc;
struct iwn_tx_data *data;
struct mbuf *m1;
bus_dma_segment_t *seg, segs[IWN_MAX_SCATTER];
uint32_t flags;
u_int hdrlen;
int ac, totlen, error, pad, nsegs = 0, i, rate;
uint8_t ridx, type, txant;
IWN_LOCK_ASSERT(sc);
wh = mtod(m, struct ieee80211_frame *);
hdrlen = ieee80211_anyhdrsize(wh);
type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
ac = params->ibp_pri & 3;
ring = &sc->txq[ac];
desc = &ring->desc[ring->cur];
data = &ring->data[ring->cur];
/* Choose a TX rate index. */
rate = params->ibp_rate0;
ridx = ic->ic_rt->rateCodeToIndex[rate];
if (ridx == (uint8_t)-1) {
/* XXX fall back to mcast/mgmt rate? */
m_freem(m);
return EINVAL;
}
totlen = m->m_pkthdr.len;
/* Prepare TX firmware command. */
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 clear tx, all fields are reinitialized here. */
tx->scratch = 0; /* clear "scratch" area */
flags = 0;
if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0)
flags |= IWN_TX_NEED_ACK;
if (params->ibp_flags & IEEE80211_BPF_RTS) {
if (sc->hw_type != IWN_HW_REV_TYPE_4965) {
/* 5000 autoselects RTS/CTS or CTS-to-self. */
flags &= ~IWN_TX_NEED_RTS;
flags |= IWN_TX_NEED_PROTECTION;
} else
flags |= IWN_TX_NEED_RTS | IWN_TX_FULL_TXOP;
}
if (params->ibp_flags & IEEE80211_BPF_CTS) {
if (sc->hw_type != IWN_HW_REV_TYPE_4965) {
/* 5000 autoselects RTS/CTS or CTS-to-self. */
flags &= ~IWN_TX_NEED_CTS;
flags |= IWN_TX_NEED_PROTECTION;
} else
flags |= IWN_TX_NEED_CTS | IWN_TX_FULL_TXOP;
}
if (type == IEEE80211_FC0_TYPE_MGT) {
uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
/* Tell HW to set timestamp in probe responses. */
if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP)
flags |= IWN_TX_INSERT_TSTAMP;
if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ ||
subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ)
tx->timeout = htole16(3);
else
tx->timeout = htole16(2);
} else
tx->timeout = htole16(0);
if (hdrlen & 3) {
/* First segment length must be a multiple of 4. */
flags |= IWN_TX_NEED_PADDING;
pad = 4 - (hdrlen & 3);
} else
pad = 0;
if (ieee80211_radiotap_active_vap(vap)) {
struct iwn_tx_radiotap_header *tap = &sc->sc_txtap;
tap->wt_flags = 0;
tap->wt_rate = rate;
ieee80211_radiotap_tx(vap, m);
}
tx->len = htole16(totlen);
tx->tid = 0;
tx->id = sc->broadcast_id;
tx->rts_ntries = params->ibp_try1;
tx->data_ntries = params->ibp_try0;
tx->lifetime = htole32(IWN_LIFETIME_INFINITE);
tx->rate = htole32(rate2plcp(rate));
if (ridx < IWN_RIDX_OFDM6 &&
IEEE80211_IS_CHAN_2GHZ(ni->ni_chan))
tx->rate |= htole32(IWN_RFLAG_CCK);
/* Group or management frame. */
tx->linkq = 0;
txant = IWN_LSB(sc->txchainmask);
tx->rate |= htole32(IWN_RFLAG_ANT(txant));
/* Set physical address of "scratch area". */
tx->loaddr = htole32(IWN_LOADDR(data->scratch_paddr));
tx->hiaddr = IWN_HIADDR(data->scratch_paddr);
/* Copy 802.11 header in TX command. */
memcpy((uint8_t *)(tx + 1), wh, hdrlen);
/* Trim 802.11 header. */
m_adj(m, hdrlen);
tx->security = 0;
tx->flags = htole32(flags);
error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, m, segs,
&nsegs, BUS_DMA_NOWAIT);
if (error != 0) {
if (error != EFBIG) {
device_printf(sc->sc_dev,
"%s: can't map mbuf (error %d)\n", __func__, error);
m_freem(m);
return error;
}
/* Too many DMA segments, linearize mbuf. */
m1 = m_collapse(m, M_DONTWAIT, IWN_MAX_SCATTER);
if (m1 == NULL) {
device_printf(sc->sc_dev,
"%s: could not defrag mbuf\n", __func__);
m_freem(m);
return ENOBUFS;
}
m = m1;
error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, m,
segs, &nsegs, BUS_DMA_NOWAIT);
if (error != 0) {
device_printf(sc->sc_dev,
"%s: can't map mbuf (error %d)\n", __func__, error);
m_freem(m);
return error;
}
}
data->m = m;
data->ni = ni;
DPRINTF(sc, IWN_DEBUG_XMIT, "%s: qid %d idx %d len %d nsegs %d\n",
__func__, ring->qid, ring->cur, m->m_pkthdr.len, nsegs);
/* Fill TX descriptor. */
desc->nsegs = 1;
if (m->m_len != 0)
desc->nsegs += nsegs;
/* First DMA segment is used by the TX command. */
desc->segs[0].addr = htole32(IWN_LOADDR(data->cmd_paddr));
desc->segs[0].len = htole16(IWN_HIADDR(data->cmd_paddr) |
(4 + sizeof (*tx) + hdrlen + pad) << 4);
/* Other DMA segments are for data payload. */
seg = &segs[0];
for (i = 1; i <= nsegs; i++) {
desc->segs[i].addr = htole32(IWN_LOADDR(seg->ds_addr));
desc->segs[i].len = htole16(IWN_HIADDR(seg->ds_addr) |
seg->ds_len << 4);
seg++;
}
bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE);
bus_dmamap_sync(ring->data_dmat, ring->cmd_dma.map,
BUS_DMASYNC_PREWRITE);
bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
BUS_DMASYNC_PREWRITE);
/* Update TX scheduler. */
if (ring->qid >= sc->firstaggqueue)
ops->update_sched(sc, ring->qid, ring->cur, tx->id, totlen);
/* Kick TX ring. */
ring->cur = (ring->cur + 1) % IWN_TX_RING_COUNT;
IWN_WRITE(sc, IWN_HBUS_TARG_WRPTR, ring->qid << 8 | ring->cur);
/* Mark TX ring as full if we reach a certain threshold. */
if (++ring->queued > IWN_TX_RING_HIMARK)
sc->qfullmsk |= 1 << ring->qid;
return 0;
}
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;
int error = 0;
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
ieee80211_free_node(ni);
m_freem(m);
return ENETDOWN;
}
IWN_LOCK(sc);
if (params == NULL) {
/*
* Legacy path; interpret frame contents to decide
* precisely how to send the frame.
*/
error = iwn_tx_data(sc, m, ni);
} else {
/*
* Caller supplied explicit parameters to use in
* sending the frame.
*/
error = iwn_tx_data_raw(sc, m, ni, params);
}
if (error != 0) {
/* NB: m is reclaimed on tx failure */
ieee80211_free_node(ni);
ifp->if_oerrors++;
}
sc->sc_tx_timer = 5;
IWN_UNLOCK(sc);
return error;
}
static void
iwn_start(struct ifnet *ifp)
{
struct iwn_softc *sc = ifp->if_softc;
IWN_LOCK(sc);
iwn_start_locked(ifp);
IWN_UNLOCK(sc);
}
static void
iwn_start_locked(struct ifnet *ifp)
{
struct iwn_softc *sc = ifp->if_softc;
struct ieee80211_node *ni;
struct mbuf *m;
IWN_LOCK_ASSERT(sc);
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 ||
(ifp->if_drv_flags & IFF_DRV_OACTIVE))
return;
for (;;) {
if (sc->qfullmsk != 0) {
ifp->if_drv_flags |= IFF_DRV_OACTIVE;
break;
}
IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
if (m == NULL)
break;
ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
if (iwn_tx_data(sc, m, ni) != 0) {
ieee80211_free_node(ni);
ifp->if_oerrors++;
continue;
}
sc->sc_tx_timer = 5;
}
}
static void
iwn_watchdog(void *arg)
{
struct iwn_softc *sc = arg;
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
IWN_LOCK_ASSERT(sc);
KASSERT(ifp->if_drv_flags & IFF_DRV_RUNNING, ("not running"));
if (sc->sc_tx_timer > 0) {
if (--sc->sc_tx_timer == 0) {
if_printf(ifp, "device timeout\n");
ieee80211_runtask(ic, &sc->sc_reinit_task);
return;
}
}
callout_reset(&sc->watchdog_to, hz, iwn_watchdog, sc);
}
static 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 ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
struct ifreq *ifr = (struct ifreq *) data;
int error = 0, startall = 0, stop = 0;
switch (cmd) {
case SIOCGIFADDR:
error = ether_ioctl(ifp, cmd, data);
break;
case SIOCSIFFLAGS:
IWN_LOCK(sc);
if (ifp->if_flags & IFF_UP) {
if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
iwn_init_locked(sc);
if (IWN_READ(sc, IWN_GP_CNTRL) & IWN_GP_CNTRL_RFKILL)
startall = 1;
else
stop = 1;
}
} else {
if (ifp->if_drv_flags & IFF_DRV_RUNNING)
iwn_stop_locked(sc);
}
IWN_UNLOCK(sc);
if (startall)
ieee80211_start_all(ic);
else if (vap != NULL && stop)
ieee80211_stop(vap);
break;
case SIOCGIFMEDIA:
error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
break;
default:
error = EINVAL;
break;
}
return error;
}
/*
* Send a command to the firmware.
*/
static int
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_data *data;
struct iwn_tx_cmd *cmd;
struct mbuf *m;
bus_addr_t paddr;
int totlen, error;
if (async == 0)
IWN_LOCK_ASSERT(sc);
desc = &ring->desc[ring->cur];
data = &ring->data[ring->cur];
totlen = 4 + size;
if (size > sizeof cmd->data) {
/* Command is too large to fit in a descriptor. */
if (totlen > MCLBYTES)
return EINVAL;
m = m_getjcl(M_DONTWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE);
if (m == NULL)
return ENOMEM;
cmd = mtod(m, struct iwn_tx_cmd *);
error = bus_dmamap_load(ring->data_dmat, data->map, cmd,
totlen, iwn_dma_map_addr, &paddr, BUS_DMA_NOWAIT);
if (error != 0) {
m_freem(m);
return error;
}
data->m = m;
} else {
cmd = &ring->cmd[ring->cur];
paddr = data->cmd_paddr;
}
cmd->code = code;
cmd->flags = 0;
cmd->qid = ring->qid;
cmd->idx = ring->cur;
memcpy(cmd->data, buf, size);
desc->nsegs = 1;
desc->segs[0].addr = htole32(IWN_LOADDR(paddr));
desc->segs[0].len = htole16(IWN_HIADDR(paddr) | totlen << 4);
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);
if (size > sizeof cmd->data) {
bus_dmamap_sync(ring->data_dmat, data->map,
BUS_DMASYNC_PREWRITE);
} else {
bus_dmamap_sync(ring->data_dmat, ring->cmd_dma.map,
BUS_DMASYNC_PREWRITE);
}
bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
BUS_DMASYNC_PREWRITE);
/* Kick command ring. */
ring->cur = (ring->cur + 1) % IWN_TX_RING_COUNT;
IWN_WRITE(sc, IWN_HBUS_TARG_WRPTR, ring->qid << 8 | ring->cur);
return async ? 0 : msleep(desc, &sc->sc_mtx, PCATCH, "iwncmd", hz);
}
static int
iwn4965_add_node(struct iwn_softc *sc, struct iwn_node_info *node, int async)
{
struct iwn4965_node_info hnode;
caddr_t src, dst;
/*
* We use the node structure for 5000 Series internally (it is
* a superset of the one for 4965AGN). We thus copy the common
* fields before sending the command.
*/
src = (caddr_t)node;
dst = (caddr_t)&hnode;
memcpy(dst, src, 48);
/* Skip TSC, RX MIC and TX MIC fields from ``src''. */
memcpy(dst + 48, src + 72, 20);
return iwn_cmd(sc, IWN_CMD_ADD_NODE, &hnode, sizeof hnode, async);
}
static int
iwn5000_add_node(struct iwn_softc *sc, struct iwn_node_info *node, int async)
{
/* Direct mapping. */
return iwn_cmd(sc, IWN_CMD_ADD_NODE, node, sizeof (*node), async);
}
static int
iwn_set_link_quality(struct iwn_softc *sc, struct ieee80211_node *ni)
{
#define RV(v) ((v) & IEEE80211_RATE_VAL)
struct iwn_node *wn = (void *)ni;
struct ieee80211_rateset *rs = &ni->ni_rates;
struct iwn_cmd_link_quality linkq;
uint8_t txant;
int i, rate, txrate;
/* Use the first valid TX antenna. */
txant = IWN_LSB(sc->txchainmask);
memset(&linkq, 0, sizeof linkq);
linkq.id = wn->id;
linkq.antmsk_1stream = txant;
linkq.antmsk_2stream = IWN_ANT_AB;
linkq.ampdu_max = 64;
linkq.ampdu_threshold = 3;
linkq.ampdu_limit = htole16(4000); /* 4ms */
/* Start at highest available bit-rate. */
if (IEEE80211_IS_CHAN_HT(ni->ni_chan))
txrate = ni->ni_htrates.rs_nrates - 1;
else
txrate = rs->rs_nrates - 1;
for (i = 0; i < IWN_MAX_TX_RETRIES; i++) {
if (IEEE80211_IS_CHAN_HT(ni->ni_chan))
rate = IEEE80211_RATE_MCS | txrate;
else
rate = RV(rs->rs_rates[txrate]);
linkq.retry[i] = wn->ridx[rate];
if ((le32toh(wn->ridx[rate]) & IWN_RFLAG_MCS) &&
RV(le32toh(wn->ridx[rate])) > 7)
linkq.mimo = i + 1;
/* Next retry at immediate lower bit-rate. */
if (txrate > 0)
txrate--;
}
return iwn_cmd(sc, IWN_CMD_LINK_QUALITY, &linkq, sizeof linkq, 1);
#undef RV
}
/*
* Broadcast node is used to send group-addressed and management frames.
*/
static int
iwn_add_broadcast_node(struct iwn_softc *sc, int async)
{
struct iwn_ops *ops = &sc->ops;
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
struct iwn_node_info node;
struct iwn_cmd_link_quality linkq;
uint8_t txant;
int i, error;
memset(&node, 0, sizeof node);
IEEE80211_ADDR_COPY(node.macaddr, ifp->if_broadcastaddr);
node.id = sc->broadcast_id;
DPRINTF(sc, IWN_DEBUG_RESET, "%s: adding broadcast node\n", __func__);
if ((error = ops->add_node(sc, &node, async)) != 0)
return error;
/* Use the first valid TX antenna. */
txant = IWN_LSB(sc->txchainmask);
memset(&linkq, 0, sizeof linkq);
linkq.id = sc->broadcast_id;
linkq.antmsk_1stream = txant;
linkq.antmsk_2stream = IWN_ANT_AB;
linkq.ampdu_max = 64;
linkq.ampdu_threshold = 3;
linkq.ampdu_limit = htole16(4000); /* 4ms */
/* Use lowest mandatory bit-rate. */
if (IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan))
linkq.retry[0] = htole32(0xd);
else
linkq.retry[0] = htole32(10 | IWN_RFLAG_CCK);
linkq.retry[0] |= htole32(IWN_RFLAG_ANT(txant));
/* Use same bit-rate for all TX retries. */
for (i = 1; i < IWN_MAX_TX_RETRIES; i++) {
linkq.retry[i] = linkq.retry[0];
}
return iwn_cmd(sc, IWN_CMD_LINK_QUALITY, &linkq, sizeof linkq, async);
}
static int
iwn_updateedca(struct ieee80211com *ic)
{
#define IWN_EXP2(x) ((1 << (x)) - 1) /* CWmin = 2^ECWmin - 1 */
struct iwn_softc *sc = ic->ic_ifp->if_softc;
struct iwn_edca_params cmd;
int aci;
memset(&cmd, 0, sizeof cmd);
cmd.flags = htole32(IWN_EDCA_UPDATE);
for (aci = 0; aci < WME_NUM_AC; aci++) {
const struct wmeParams *ac =
&ic->ic_wme.wme_chanParams.cap_wmeParams[aci];
cmd.ac[aci].aifsn = ac->wmep_aifsn;
cmd.ac[aci].cwmin = htole16(IWN_EXP2(ac->wmep_logcwmin));
cmd.ac[aci].cwmax = htole16(IWN_EXP2(ac->wmep_logcwmax));
cmd.ac[aci].txoplimit =
htole16(IEEE80211_TXOP_TO_US(ac->wmep_txopLimit));
}
IEEE80211_UNLOCK(ic);
IWN_LOCK(sc);
(void)iwn_cmd(sc, IWN_CMD_EDCA_PARAMS, &cmd, sizeof cmd, 1);
IWN_UNLOCK(sc);
IEEE80211_LOCK(ic);
return 0;
#undef IWN_EXP2
}
static void
iwn_update_mcast(struct ifnet *ifp)
{
/* Ignore */
}
static void
iwn_set_led(struct iwn_softc *sc, uint8_t which, uint8_t off, uint8_t on)
{
struct iwn_cmd_led led;
/* Clear microcode LED ownership. */
IWN_CLRBITS(sc, IWN_LED, IWN_LED_BSM_CTRL);
led.which = which;
led.unit = htole32(10000); /* 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 stop the radio
* and notify us.
*/
static int
iwn_set_critical_temp(struct iwn_softc *sc)
{
struct iwn_critical_temp crit;
int32_t temp;
IWN_WRITE(sc, IWN_UCODE_GP1_CLR, IWN_UCODE_GP1_CTEMP_STOP_RF);
if (sc->hw_type == IWN_HW_REV_TYPE_5150)
temp = (IWN_CTOK(110) - sc->temp_off) * -5;
else if (sc->hw_type == IWN_HW_REV_TYPE_4965)
temp = IWN_CTOK(110);
else
temp = 110;
memset(&crit, 0, sizeof crit);
crit.tempR = htole32(temp);
DPRINTF(sc, IWN_DEBUG_RESET, "setting critical temp to %d\n", temp);
return iwn_cmd(sc, IWN_CMD_SET_CRITICAL_TEMP, &crit, sizeof crit, 0);
}
static int
iwn_set_timing(struct iwn_softc *sc, struct ieee80211_node *ni)
{
struct iwn_cmd_timing cmd;
uint64_t val, mod;
memset(&cmd, 0, sizeof cmd);
memcpy(&cmd.tstamp, ni->ni_tstamp.data, sizeof (uint64_t));
cmd.bintval = htole16(ni->ni_intval);
cmd.lintval = htole16(10);
/* Compute remaining time until next beacon. */
val = (uint64_t)ni->ni_intval * IEEE80211_DUR_TU;
mod = le64toh(cmd.tstamp) % val;
cmd.binitval = htole32((uint32_t)(val - mod));
DPRINTF(sc, IWN_DEBUG_RESET, "timing bintval=%u tstamp=%ju, init=%u\n",
ni->ni_intval, le64toh(cmd.tstamp), (uint32_t)(val - mod));
return iwn_cmd(sc, IWN_CMD_TIMING, &cmd, sizeof cmd, 1);
}
static void
iwn4965_power_calibration(struct iwn_softc *sc, int temp)
{
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
/* Adjust TX power if need be (delta >= 3 degC). */
DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s: temperature %d->%d\n",
__func__, sc->temp, temp);
if (abs(temp - sc->temp) >= 3) {
/* Record temperature of last calibration. */
sc->temp = temp;
(void)iwn4965_set_txpower(sc, ic->ic_bsschan, 1);
}
}
/*
* Set TX power for current 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.
*/
static int
iwn4965_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 iwn_ucode_info *uc = &sc->ucode_info;
struct iwn4965_cmd_txpower cmd;
struct iwn4965_eeprom_chan_samples *chans;
const uint8_t *rf_gain, *dsp_gain;
int32_t vdiff, tdiff;
int i, c, grp, maxpwr;
uint8_t chan;
/* Retrieve current channel from last RXON. */
chan = sc->rxon.chan;
DPRINTF(sc, IWN_DEBUG_RESET, "setting TX power for channel %d\n",
chan);
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 = iwn4965_rf_gain_5ghz;
dsp_gain = iwn4965_dsp_gain_5ghz;
} else {
maxpwr = sc->maxpwr2GHz;
rf_gain = iwn4965_rf_gain_2ghz;
dsp_gain = iwn4965_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 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 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;
if (i == IWN_NBANDS) /* Can't happen in real-life. */
return EINVAL;
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 < 2; 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++) {
/* Convert dBm to half-dBm. */
maxchpwr = sc->maxpwr[chan] * 2;
if ((ridx / 8) & 1)
maxchpwr -= 6; /* MIMO 2T: -3dB */
pwr = maxpwr;
/* Adjust TX power based on rate. */
if ((ridx % 8) == 5)
pwr -= 15; /* OFDM48: -7.5dB */
else if ((ridx % 8) == 6)
pwr -= 17; /* OFDM54: -8.5dB */
else if ((ridx % 8) == 7)
pwr -= 20; /* OFDM60: -10dB */
else
pwr -= 10; /* Others: -5dB */
/* Do not exceed channel max TX power. */
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 > IWN4965_MAX_PWR_INDEX)
idx = IWN4965_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
}
static int
iwn5000_set_txpower(struct iwn_softc *sc, struct ieee80211_channel *ch,
int async)
{
struct iwn5000_cmd_txpower cmd;
/*
* TX power calibration is handled automatically by the firmware
* for 5000 Series.
*/
memset(&cmd, 0, sizeof cmd);
cmd.global_limit = 2 * IWN5000_TXPOWER_MAX_DBM; /* 16 dBm */
cmd.flags = IWN5000_TXPOWER_NO_CLOSED;
cmd.srv_limit = IWN5000_TXPOWER_AUTO;
DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s: setting TX power\n", __func__);
return iwn_cmd(sc, IWN_CMD_TXPOWER_DBM, &cmd, sizeof cmd, async);
}
/*
* Retrieve the maximum RSSI (in dBm) among receivers.
*/
static int
iwn4965_get_rssi(struct iwn_softc *sc, struct iwn_rx_stat *stat)
{
struct iwn4965_rx_phystat *phy = (void *)stat->phybuf;
uint8_t mask, agc;
int rssi;
mask = (le16toh(phy->antenna) >> 4) & IWN_ANT_ABC;
agc = (le16toh(phy->agc) >> 7) & 0x7f;
rssi = 0;
if (mask & IWN_ANT_A)
rssi = MAX(rssi, phy->rssi[0]);
if (mask & IWN_ANT_B)
rssi = MAX(rssi, phy->rssi[2]);
if (mask & IWN_ANT_C)
rssi = MAX(rssi, phy->rssi[4]);
DPRINTF(sc, IWN_DEBUG_RECV,
"%s: agc %d mask 0x%x rssi %d %d %d result %d\n", __func__, agc,
mask, phy->rssi[0], phy->rssi[2], phy->rssi[4],
rssi - agc - IWN_RSSI_TO_DBM);
return rssi - agc - IWN_RSSI_TO_DBM;
}
static int
iwn5000_get_rssi(struct iwn_softc *sc, struct iwn_rx_stat *stat)
{
struct iwn5000_rx_phystat *phy = (void *)stat->phybuf;
uint8_t agc;
int rssi;
agc = (le32toh(phy->agc) >> 9) & 0x7f;
rssi = MAX(le16toh(phy->rssi[0]) & 0xff,
le16toh(phy->rssi[1]) & 0xff);
rssi = MAX(le16toh(phy->rssi[2]) & 0xff, rssi);
DPRINTF(sc, IWN_DEBUG_RECV,
"%s: agc %d rssi %d %d %d result %d\n", __func__, agc,
phy->rssi[0], phy->rssi[1], phy->rssi[2],
rssi - agc - IWN_RSSI_TO_DBM);
return rssi - agc - IWN_RSSI_TO_DBM;
}
/*
* Retrieve the average noise (in dBm) among receivers.
*/
static 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++) {
if ((noise = le32toh(stats->noise[i]) & 0xff) == 0)
continue;
total += noise;
nbant++;
}
/* There should be at least one antenna but check anyway. */
return (nbant == 0) ? -127 : (total / nbant) - 107;
}
/*
* Compute temperature (in degC) from last received statistics.
*/
static int
iwn4965_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 & 0xffffff) ^ 0x800000) - 0x800000;
/* Compute temperature in Kelvin. */
temp = (259 * (r4 - r2)) / (r3 - r1);
temp = (temp * 97) / 100 + 8;
DPRINTF(sc, IWN_DEBUG_ANY, "temperature %dK/%dC\n", temp,
IWN_KTOC(temp));
return IWN_KTOC(temp);
}
static int
iwn5000_get_temperature(struct iwn_softc *sc)
{
int32_t temp;
/*
* Temperature is not used by the driver for 5000 Series because
* TX power calibration is handled by firmware.
*/
temp = le32toh(sc->rawtemp);
if (sc->hw_type == IWN_HW_REV_TYPE_5150) {
temp = (temp / -5) + sc->temp_off;
temp = IWN_KTOC(temp);
}
return temp;
}
/*
* Initialize sensitivity calibration state machine.
*/
static int
iwn_init_sensitivity(struct iwn_softc *sc)
{
struct iwn_ops *ops = &sc->ops;
struct iwn_calib_state *calib = &sc->calib;
uint32_t flags;
int error;
/* Reset calibration state machine. */
memset(calib, 0, sizeof (*calib));
calib->state = IWN_CALIB_STATE_INIT;
calib->cck_state = IWN_CCK_STATE_HIFA;
/* Set initial correlation values. */
calib->ofdm_x1 = sc->limits->min_ofdm_x1;
calib->ofdm_mrc_x1 = sc->limits->min_ofdm_mrc_x1;
calib->ofdm_x4 = sc->limits->min_ofdm_x4;
calib->ofdm_mrc_x4 = sc->limits->min_ofdm_mrc_x4;
calib->cck_x4 = 125;
calib->cck_mrc_x4 = sc->limits->min_cck_mrc_x4;
calib->energy_cck = sc->limits->energy_cck;
/* Write initial sensitivity. */
if ((error = iwn_send_sensitivity(sc)) != 0)
return error;
/* Write initial gains. */
if ((error = ops->init_gains(sc)) != 0)
return error;
/* Request statistics at each beacon interval. */
flags = 0;
DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s: sending request for statistics\n",
__func__);
return iwn_cmd(sc, IWN_CMD_GET_STATISTICS, &flags, sizeof flags, 1);
}
/*
* Collect noise and RSSI statistics for the first 20 beacons received
* after association and use them to determine connected antennas and
* to set differential gains.
*/
static void
iwn_collect_noise(struct iwn_softc *sc,
const struct iwn_rx_general_stats *stats)
{
struct iwn_ops *ops = &sc->ops;
struct iwn_calib_state *calib = &sc->calib;
uint32_t val;
int i;
/* 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;
}
/* NB: We update differential gains only once after 20 beacons. */
if (++calib->nbeacons < 20)
return;
/* Determine highest average RSSI. */
val = MAX(calib->rssi[0], calib->rssi[1]);
val = MAX(calib->rssi[2], val);
/* Determine which antennas are connected. */
sc->chainmask = sc->rxchainmask;
for (i = 0; i < 3; i++)
if (val - calib->rssi[i] > 15 * 20)
sc->chainmask &= ~(1 << i);
DPRINTF(sc, IWN_DEBUG_CALIBRATE,
"%s: RX chains mask: theoretical=0x%x, actual=0x%x\n",
__func__, sc->rxchainmask, sc->chainmask);
/* If none of the TX antennas are connected, keep at least one. */
if ((sc->chainmask & sc->txchainmask) == 0)
sc->chainmask |= IWN_LSB(sc->txchainmask);
(void)ops->set_gains(sc);
calib->state = IWN_CALIB_STATE_RUN;
#ifdef notyet
/* XXX Disable RX chains with no antennas connected. */
sc->rxon.rxchain = htole16(IWN_RXCHAIN_SEL(sc->chainmask));
(void)iwn_cmd(sc, IWN_CMD_RXON, &sc->rxon, sc->rxonsz, 1);
#endif
#if 0
/* XXX: not yet */
/* Enable power-saving mode if requested by user. */
if (sc->sc_ic.ic_flags & IEEE80211_F_PMGTON)
(void)iwn_set_pslevel(sc, 0, 3, 1);
#endif
}
static int
iwn4965_init_gains(struct iwn_softc *sc)
{
struct iwn_phy_calib_gain cmd;
memset(&cmd, 0, sizeof cmd);
cmd.code = IWN4965_PHY_CALIB_DIFF_GAIN;
/* Differential gains initially set to 0 for all 3 antennas. */
DPRINTF(sc, IWN_DEBUG_CALIBRATE,
"%s: setting initial differential gains\n", __func__);
return iwn_cmd(sc, IWN_CMD_PHY_CALIB, &cmd, sizeof cmd, 1);
}
static int
iwn5000_init_gains(struct iwn_softc *sc)
{
struct iwn_phy_calib cmd;
memset(&cmd, 0, sizeof cmd);
cmd.code = sc->reset_noise_gain;
cmd.ngroups = 1;
cmd.isvalid = 1;
DPRINTF(sc, IWN_DEBUG_CALIBRATE,
"%s: setting initial differential gains\n", __func__);
return iwn_cmd(sc, IWN_CMD_PHY_CALIB, &cmd, sizeof cmd, 1);
}
static int
iwn4965_set_gains(struct iwn_softc *sc)
{
struct iwn_calib_state *calib = &sc->calib;
struct iwn_phy_calib_gain cmd;
int i, delta, noise;
/* Get minimal noise among connected antennas. */
noise = INT_MAX; /* NB: There's at least one antenna. */
for (i = 0; i < 3; i++)
if (sc->chainmask & (1 << i))
noise = MIN(calib->noise[i], noise);
memset(&cmd, 0, sizeof cmd);
cmd.code = IWN4965_PHY_CALIB_DIFF_GAIN;
/* Set differential gains for connected antennas. */
for (i = 0; i < 3; i++) {
if (sc->chainmask & (1 << i)) {
/* Compute attenuation (in unit of 1.5dB). */
delta = (noise - (int32_t)calib->noise[i]) / 30;
/* NB: delta <= 0 */
/* Limit to [-4.5dB,0]. */
cmd.gain[i] = MIN(abs(delta), 3);
if (delta < 0)
cmd.gain[i] |= 1 << 2; /* sign bit */
}
}
DPRINTF(sc, IWN_DEBUG_CALIBRATE,
"setting differential gains Ant A/B/C: %x/%x/%x (%x)\n",
cmd.gain[0], cmd.gain[1], cmd.gain[2], sc->chainmask);
return iwn_cmd(sc, IWN_CMD_PHY_CALIB, &cmd, sizeof cmd, 1);
}
static int
iwn5000_set_gains(struct iwn_softc *sc)
{
struct iwn_calib_state *calib = &sc->calib;
struct iwn_phy_calib_gain cmd;
int i, ant, div, delta;
/* We collected 20 beacons and !=6050 need a 1.5 factor. */
div = (sc->hw_type == IWN_HW_REV_TYPE_6050) ? 20 : 30;
memset(&cmd, 0, sizeof cmd);
cmd.code = sc->noise_gain;
cmd.ngroups = 1;
cmd.isvalid = 1;
/* Get first available RX antenna as referential. */
ant = IWN_LSB(sc->rxchainmask);
/* Set differential gains for other antennas. */
for (i = ant + 1; i < 3; i++) {
if (sc->chainmask & (1 << i)) {
/* The delta is relative to antenna "ant". */
delta = ((int32_t)calib->noise[ant] -
(int32_t)calib->noise[i]) / div;
/* Limit to [-4.5dB,+4.5dB]. */
cmd.gain[i - 1] = MIN(abs(delta), 3);
if (delta < 0)
cmd.gain[i - 1] |= 1 << 2; /* sign bit */
}
}
DPRINTF(sc, IWN_DEBUG_CALIBRATE,
"setting differential gains Ant B/C: %x/%x (%x)\n",
cmd.gain[0], cmd.gain[1], sc->chainmask);
return iwn_cmd(sc, IWN_CMD_PHY_CALIB, &cmd, sizeof cmd, 1);
}
/*
* Tune RF RX sensitivity based on the number of false alarms detected
* during the last beacon period.
*/
static void
iwn_tune_sensitivity(struct iwn_softc *sc, const struct iwn_rx_stats *stats)
{
#define inc(val, inc, max) \
if ((val) < (max)) { \
if ((val) < (max) - (inc)) \
(val) += (inc); \
else \
(val) = (max); \
needs_update = 1; \
}
#define dec(val, dec, min) \
if ((val) > (min)) { \
if ((val) > (min) + (dec)) \
(val) -= (dec); \
else \
(val) = (min); \
needs_update = 1; \
}
const struct iwn_sensitivity_limits *limits = sc->limits;
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 * IEEE80211_DUR_TU; /* 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(calib->ofdm_x1, 1, limits->max_ofdm_x1);
inc(calib->ofdm_mrc_x1, 1, limits->max_ofdm_mrc_x1);
inc(calib->ofdm_x4, 1, limits->max_ofdm_x4);
inc(calib->ofdm_mrc_x4, 1, limits->max_ofdm_mrc_x4);
} 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(calib->ofdm_x1, 1, limits->min_ofdm_x1);
dec(calib->ofdm_mrc_x1, 1, limits->min_ofdm_mrc_x1);
dec(calib->ofdm_x4, 1, limits->min_ofdm_x4);
dec(calib->ofdm_mrc_x4, 1, limits->min_ofdm_mrc_x4);
}
/* Compute maximum noise among 3 receivers. */
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 receivers. */
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 * IEEE80211_DUR_TU; /* 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->cck_x4 > 160) {
calib->noise_ref = noise_ref;
if (calib->energy_cck > 2)
dec(calib->energy_cck, 2, energy_min);
}
if (calib->cck_x4 < 160) {
calib->cck_x4 = 161;
needs_update = 1;
} else
inc(calib->cck_x4, 3, limits->max_cck_x4);
inc(calib->cck_mrc_x4, 3, limits->max_cck_mrc_x4);
} 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 != IWN_CCK_STATE_INIT &&
(((int32_t)calib->noise_ref - (int32_t)noise_ref) > 2 ||
calib->low_fa > 100)) {
inc(calib->energy_cck, 2, limits->min_energy_cck);
dec(calib->cck_x4, 3, limits->min_cck_x4);
dec(calib->cck_mrc_x4, 3, limits->min_cck_mrc_x4);
}
} 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(calib->energy_cck, 8, energy_min);
}
calib->cck_state = IWN_CCK_STATE_INIT;
}
if (needs_update)
(void)iwn_send_sensitivity(sc);
#undef dec
#undef inc
}
static int
iwn_send_sensitivity(struct iwn_softc *sc)
{
struct iwn_calib_state *calib = &sc->calib;
struct iwn_enhanced_sensitivity_cmd cmd;
int len;
memset(&cmd, 0, sizeof cmd);
len = sizeof (struct iwn_sensitivity_cmd);
cmd.which = IWN_SENSITIVITY_WORKTBL;
/* OFDM modulation. */
cmd.corr_ofdm_x1 = htole16(calib->ofdm_x1);
cmd.corr_ofdm_mrc_x1 = htole16(calib->ofdm_mrc_x1);
cmd.corr_ofdm_x4 = htole16(calib->ofdm_x4);
cmd.corr_ofdm_mrc_x4 = htole16(calib->ofdm_mrc_x4);
cmd.energy_ofdm = htole16(sc->limits->energy_ofdm);
cmd.energy_ofdm_th = htole16(62);
/* CCK modulation. */
cmd.corr_cck_x4 = htole16(calib->cck_x4);
cmd.corr_cck_mrc_x4 = htole16(calib->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_CALIBRATE,
"%s: set sensitivity %d/%d/%d/%d/%d/%d/%d\n", __func__,
calib->ofdm_x1, calib->ofdm_mrc_x1, calib->ofdm_x4,
calib->ofdm_mrc_x4, calib->cck_x4,
calib->cck_mrc_x4, calib->energy_cck);
if (!(sc->sc_flags & IWN_FLAG_ENH_SENS))
goto send;
/* Enhanced sensitivity settings. */
len = sizeof (struct iwn_enhanced_sensitivity_cmd);
cmd.ofdm_det_slope_mrc = htole16(668);
cmd.ofdm_det_icept_mrc = htole16(4);
cmd.ofdm_det_slope = htole16(486);
cmd.ofdm_det_icept = htole16(37);
cmd.cck_det_slope_mrc = htole16(853);
cmd.cck_det_icept_mrc = htole16(4);
cmd.cck_det_slope = htole16(476);
cmd.cck_det_icept = htole16(99);
send:
return iwn_cmd(sc, IWN_CMD_SET_SENSITIVITY, &cmd, len, 1);
}
/*
* Set STA mode power saving level (between 0 and 5).
* Level 0 is CAM (Continuously Aware Mode), 5 is for maximum power saving.
*/
static int
iwn_set_pslevel(struct iwn_softc *sc, int dtim, int level, int async)
{
struct iwn_pmgt_cmd cmd;
const struct iwn_pmgt *pmgt;
uint32_t max, skip_dtim;
uint32_t reg;
int i;
/* Select which PS parameters to use. */
if (dtim <= 2)
pmgt = &iwn_pmgt[0][level];
else if (dtim <= 10)
pmgt = &iwn_pmgt[1][level];
else
pmgt = &iwn_pmgt[2][level];
memset(&cmd, 0, sizeof cmd);
if (level != 0) /* not CAM */
cmd.flags |= htole16(IWN_PS_ALLOW_SLEEP);
if (level == 5)
cmd.flags |= htole16(IWN_PS_FAST_PD);
/* Retrieve PCIe Active State Power Management (ASPM). */
reg = pci_read_config(sc->sc_dev, sc->sc_cap_off + 0x10, 1);
if (!(reg & 0x1)) /* L0s Entry disabled. */
cmd.flags |= htole16(IWN_PS_PCI_PMGT);
cmd.rxtimeout = htole32(pmgt->rxtimeout * 1024);
cmd.txtimeout = htole32(pmgt->txtimeout * 1024);
if (dtim == 0) {
dtim = 1;
skip_dtim = 0;
} else
skip_dtim = pmgt->skip_dtim;
if (skip_dtim != 0) {
cmd.flags |= htole16(IWN_PS_SLEEP_OVER_DTIM);
max = pmgt->intval[4];
if (max == (uint32_t)-1)
max = dtim * (skip_dtim + 1);
else if (max > dtim)
max = (max / dtim) * dtim;
} else
max = dtim;
for (i = 0; i < 5; i++)
cmd.intval[i] = htole32(MIN(max, pmgt->intval[i]));
DPRINTF(sc, IWN_DEBUG_RESET, "setting power saving level to %d\n",
level);
return iwn_cmd(sc, IWN_CMD_SET_POWER_MODE, &cmd, sizeof cmd, async);
}
static int
iwn_send_btcoex(struct iwn_softc *sc)
{
struct iwn_bluetooth cmd;
memset(&cmd, 0, sizeof cmd);
cmd.flags = IWN_BT_COEX_CHAN_ANN | IWN_BT_COEX_BT_PRIO;
cmd.lead_time = IWN_BT_LEAD_TIME_DEF;
cmd.max_kill = IWN_BT_MAX_KILL_DEF;
DPRINTF(sc, IWN_DEBUG_RESET, "%s: configuring bluetooth coexistence\n",
__func__);
return iwn_cmd(sc, IWN_CMD_BT_COEX, &cmd, sizeof(cmd), 0);
}
static int
iwn_send_advanced_btcoex(struct iwn_softc *sc)
{
static const uint32_t btcoex_3wire[12] = {
0xaaaaaaaa, 0xaaaaaaaa, 0xaeaaaaaa, 0xaaaaaaaa,
0xcc00ff28, 0x0000aaaa, 0xcc00aaaa, 0x0000aaaa,
0xc0004000, 0x00004000, 0xf0005000, 0xf0005000,
};
struct iwn6000_btcoex_config btconfig;
struct iwn_btcoex_priotable btprio;
struct iwn_btcoex_prot btprot;
int error, i;
memset(&btconfig, 0, sizeof btconfig);
btconfig.flags = 145;
btconfig.max_kill = 5;
btconfig.bt3_t7_timer = 1;
btconfig.kill_ack = htole32(0xffff0000);
btconfig.kill_cts = htole32(0xffff0000);
btconfig.sample_time = 2;
btconfig.bt3_t2_timer = 0xc;
for (i = 0; i < 12; i++)
btconfig.lookup_table[i] = htole32(btcoex_3wire[i]);
btconfig.valid = htole16(0xff);
btconfig.prio_boost = 0xf0;
DPRINTF(sc, IWN_DEBUG_RESET,
"%s: configuring advanced bluetooth coexistence\n", __func__);
error = iwn_cmd(sc, IWN_CMD_BT_COEX, &btconfig, sizeof(btconfig), 1);
if (error != 0)
return error;
memset(&btprio, 0, sizeof btprio);
btprio.calib_init1 = 0x6;
btprio.calib_init2 = 0x7;
btprio.calib_periodic_low1 = 0x2;
btprio.calib_periodic_low2 = 0x3;
btprio.calib_periodic_high1 = 0x4;
btprio.calib_periodic_high2 = 0x5;
btprio.dtim = 0x6;
btprio.scan52 = 0x8;
btprio.scan24 = 0xa;
error = iwn_cmd(sc, IWN_CMD_BT_COEX_PRIOTABLE, &btprio, sizeof(btprio),
1);
if (error != 0)
return error;
/* Force BT state machine change. */
memset(&btprot, 0, sizeof btprio);
btprot.open = 1;
btprot.type = 1;
error = iwn_cmd(sc, IWN_CMD_BT_COEX_PROT, &btprot, sizeof(btprot), 1);
if (error != 0)
return error;
btprot.open = 0;
return iwn_cmd(sc, IWN_CMD_BT_COEX_PROT, &btprot, sizeof(btprot), 1);
}
static int
iwn_config(struct iwn_softc *sc)
{
struct iwn_ops *ops = &sc->ops;
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
uint32_t txmask;
uint16_t rxchain;
int error;
if (sc->hw_type == IWN_HW_REV_TYPE_6005) {
/* Set radio temperature sensor offset. */
error = iwn5000_temp_offset_calib(sc);
if (error != 0) {
device_printf(sc->sc_dev,
"%s: could not set temperature offset\n", __func__);
return error;
}
}
/* Configure valid TX chains for >=5000 Series. */
if (sc->hw_type != IWN_HW_REV_TYPE_4965) {
txmask = htole32(sc->txchainmask);
DPRINTF(sc, IWN_DEBUG_RESET,
"%s: configuring valid TX chains 0x%x\n", __func__, txmask);
error = iwn_cmd(sc, IWN5000_CMD_TX_ANT_CONFIG, &txmask,
sizeof txmask, 0);
if (error != 0) {
device_printf(sc->sc_dev,
"%s: could not configure valid TX chains, "
"error %d\n", __func__, error);
return error;
}
}
/* Configure bluetooth coexistence. */
if (sc->sc_flags & IWN_FLAG_ADV_BTCOEX)
error = iwn_send_advanced_btcoex(sc);
else
error = iwn_send_btcoex(sc);
if (error != 0) {
device_printf(sc->sc_dev,
"%s: could not configure bluetooth coexistence, error %d\n",
__func__, error);
return error;
}
/* Set mode, channel, RX filter and enable RX. */
memset(&sc->rxon, 0, sizeof (struct iwn_rxon));
IEEE80211_ADDR_COPY(sc->rxon.myaddr, IF_LLADDR(ifp));
IEEE80211_ADDR_COPY(sc->rxon.wlap, IF_LLADDR(ifp));
sc->rxon.chan = ieee80211_chan2ieee(ic, ic->ic_curchan);
sc->rxon.flags = htole32(IWN_RXON_TSF | IWN_RXON_CTS_TO_SELF);
if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan))
sc->rxon.flags |= htole32(IWN_RXON_AUTO | IWN_RXON_24GHZ);
switch (ic->ic_opmode) {
case IEEE80211_M_STA:
sc->rxon.mode = IWN_MODE_STA;
sc->rxon.filter = htole32(IWN_FILTER_MULTICAST);
break;
case IEEE80211_M_MONITOR:
sc->rxon.mode = IWN_MODE_MONITOR;
sc->rxon.filter = htole32(IWN_FILTER_MULTICAST |
IWN_FILTER_CTL | IWN_FILTER_PROMISC);
break;
default:
/* Should not get there. */
break;
}
sc->rxon.cck_mask = 0x0f; /* not yet negotiated */
sc->rxon.ofdm_mask = 0xff; /* not yet negotiated */
sc->rxon.ht_single_mask = 0xff;
sc->rxon.ht_dual_mask = 0xff;
sc->rxon.ht_triple_mask = 0xff;
rxchain =
IWN_RXCHAIN_VALID(sc->rxchainmask) |
IWN_RXCHAIN_MIMO_COUNT(2) |
IWN_RXCHAIN_IDLE_COUNT(2);
sc->rxon.rxchain = htole16(rxchain);
DPRINTF(sc, IWN_DEBUG_RESET, "%s: setting configuration\n", __func__);
error = iwn_cmd(sc, IWN_CMD_RXON, &sc->rxon, sc->rxonsz, 0);
if (error != 0) {
device_printf(sc->sc_dev, "%s: RXON command failed\n",
__func__);
return error;
}
if ((error = iwn_add_broadcast_node(sc, 0)) != 0) {
device_printf(sc->sc_dev, "%s: could not add broadcast node\n",
__func__);
return error;
}
/* Configuration has changed, set TX power accordingly. */
if ((error = ops->set_txpower(sc, ic->ic_curchan, 0)) != 0) {
device_printf(sc->sc_dev, "%s: could not set TX power\n",
__func__);
return error;
}
if ((error = iwn_set_critical_temp(sc)) != 0) {
device_printf(sc->sc_dev,
"%s: could not set critical temperature\n", __func__);
return error;
}
/* Set power saving level to CAM during initialization. */
if ((error = iwn_set_pslevel(sc, 0, 0, 0)) != 0) {
device_printf(sc->sc_dev,
"%s: could not set power saving level\n", __func__);
return error;
}
return 0;
}
/*
* Add an ssid element to a frame.
*/
static uint8_t *
ieee80211_add_ssid(uint8_t *frm, const uint8_t *ssid, u_int len)
{
*frm++ = IEEE80211_ELEMID_SSID;
*frm++ = len;
memcpy(frm, ssid, len);
return frm + len;
}
static 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 ieee80211_node *ni = ss->ss_vap->iv_bss;
struct iwn_scan_hdr *hdr;
struct iwn_cmd_data *tx;
struct iwn_scan_essid *essid;
struct iwn_scan_chan *chan;
struct ieee80211_frame *wh;
struct ieee80211_rateset *rs;
struct ieee80211_channel *c;
uint8_t *buf, *frm;
uint16_t rxchain;
uint8_t txant;
int buflen, error;
buf = malloc(IWN_SCAN_MAXSZ, M_DEVBUF, M_NOWAIT | M_ZERO);
if (buf == NULL) {
device_printf(sc->sc_dev,
"%s: could not allocate buffer for scan command\n",
__func__);
return ENOMEM;
}
hdr = (struct iwn_scan_hdr *)buf;
/*
* Move to the next channel if no frames are received within 10ms
* after sending the probe request.
*/
hdr->quiet_time = htole16(10); /* timeout in milliseconds */
hdr->quiet_threshold = htole16(1); /* min # of packets */
/* Select antennas for scanning. */
rxchain =
IWN_RXCHAIN_VALID(sc->rxchainmask) |
IWN_RXCHAIN_FORCE_MIMO_SEL(sc->rxchainmask) |
IWN_RXCHAIN_DRIVER_FORCE;
if (IEEE80211_IS_CHAN_A(ic->ic_curchan) &&
sc->hw_type == IWN_HW_REV_TYPE_4965) {
/* Ant A must be avoided in 5GHz because of an HW bug. */
rxchain |= IWN_RXCHAIN_FORCE_SEL(IWN_ANT_B);
} else /* Use all available RX antennas. */
rxchain |= IWN_RXCHAIN_FORCE_SEL(sc->rxchainmask);
hdr->rxchain = htole16(rxchain);
hdr->filter = htole32(IWN_FILTER_MULTICAST | IWN_FILTER_BEACON);
tx = (struct iwn_cmd_data *)(hdr + 1);
tx->flags = htole32(IWN_TX_AUTO_SEQ);
tx->id = sc->broadcast_id;
tx->lifetime = htole32(IWN_LIFETIME_INFINITE);
if (IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) {
/* Send probe requests at 6Mbps. */
tx->rate = htole32(0xd);
rs = &ic->ic_sup_rates[IEEE80211_MODE_11A];
} else {
hdr->flags = htole32(IWN_RXON_24GHZ | IWN_RXON_AUTO);
if (sc->hw_type == IWN_HW_REV_TYPE_4965 &&
sc->rxon.associd && sc->rxon.chan > 14)
tx->rate = htole32(0xd);
else {
/* Send probe requests at 1Mbps. */
tx->rate = htole32(10 | IWN_RFLAG_CCK);
}
rs = &ic->ic_sup_rates[IEEE80211_MODE_11G];
}
/* Use the first valid TX antenna. */
txant = IWN_LSB(sc->txchainmask);
tx->rate |= htole32(IWN_RFLAG_ANT(txant));
essid = (struct iwn_scan_essid *)(tx + 1);
if (ss->ss_ssid[0].len != 0) {
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 + 20);
wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT |
IEEE80211_FC0_SUBTYPE_PROBE_REQ;
wh->i_fc[1] = IEEE80211_FC1_DIR_NODS;
IEEE80211_ADDR_COPY(wh->i_addr1, ifp->if_broadcastaddr);
IEEE80211_ADDR_COPY(wh->i_addr2, IF_LLADDR(ifp));
IEEE80211_ADDR_COPY(wh->i_addr3, ifp->if_broadcastaddr);
*(uint16_t *)&wh->i_dur[0] = 0; /* filled by HW */
*(uint16_t *)&wh->i_seq[0] = 0; /* filled by HW */
frm = (uint8_t *)(wh + 1);
frm = ieee80211_add_ssid(frm, NULL, 0);
frm = ieee80211_add_rates(frm, rs);
if (rs->rs_nrates > IEEE80211_RATE_SIZE)
frm = ieee80211_add_xrates(frm, rs);
if (ic->ic_htcaps & IEEE80211_HTC_HT)
frm = ieee80211_add_htcap(frm, ni);
/* Set length of probe request. */
tx->len = htole16(frm - (uint8_t *)wh);
c = ic->ic_curchan;
chan = (struct iwn_scan_chan *)frm;
chan->chan = htole16(ieee80211_chan2ieee(ic, c));
chan->flags = 0;
if (ss->ss_nssid > 0)
chan->flags |= htole32(IWN_CHAN_NPBREQS(1));
chan->dsp_gain = 0x6e;
if (IEEE80211_IS_CHAN_5GHZ(c) &&
!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) {
chan->rf_gain = 0x3b;
chan->active = htole16(24);
chan->passive = htole16(110);
chan->flags |= htole32(IWN_CHAN_ACTIVE);
} else if (IEEE80211_IS_CHAN_5GHZ(c)) {
chan->rf_gain = 0x3b;
chan->active = htole16(24);
if (sc->rxon.associd)
chan->passive = htole16(78);
else
chan->passive = htole16(110);
hdr->crc_threshold = 0xffff;
} else if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) {
chan->rf_gain = 0x28;
chan->active = htole16(36);
chan->passive = htole16(120);
chan->flags |= htole32(IWN_CHAN_ACTIVE);
} else {
chan->rf_gain = 0x28;
chan->active = htole16(36);
if (sc->rxon.associd)
chan->passive = htole16(88);
else
chan->passive = htole16(120);
hdr->crc_threshold = 0xffff;
}
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++;
buflen = (uint8_t *)chan - buf;
hdr->len = htole16(buflen);
DPRINTF(sc, IWN_DEBUG_STATE, "sending scan command nchan=%d\n",
hdr->nchan);
error = iwn_cmd(sc, IWN_CMD_SCAN, buf, buflen, 1);
free(buf, M_DEVBUF);
return error;
}
static int
iwn_auth(struct iwn_softc *sc, struct ieee80211vap *vap)
{
struct iwn_ops *ops = &sc->ops;
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
struct ieee80211_node *ni = vap->iv_bss;
int error;
/* Update adapter configuration. */
IEEE80211_ADDR_COPY(sc->rxon.bssid, ni->ni_bssid);
sc->rxon.chan = ieee80211_chan2ieee(ic, ni->ni_chan);
sc->rxon.flags = htole32(IWN_RXON_TSF | IWN_RXON_CTS_TO_SELF);
if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan))
sc->rxon.flags |= htole32(IWN_RXON_AUTO | IWN_RXON_24GHZ);
if (ic->ic_flags & IEEE80211_F_SHSLOT)
sc->rxon.flags |= htole32(IWN_RXON_SHSLOT);
if (ic->ic_flags & IEEE80211_F_SHPREAMBLE)
sc->rxon.flags |= htole32(IWN_RXON_SHPREAMBLE);
if (IEEE80211_IS_CHAN_A(ni->ni_chan)) {
sc->rxon.cck_mask = 0;
sc->rxon.ofdm_mask = 0x15;
} else if (IEEE80211_IS_CHAN_B(ni->ni_chan)) {
sc->rxon.cck_mask = 0x03;
sc->rxon.ofdm_mask = 0;
} else {
/* Assume 802.11b/g. */
sc->rxon.cck_mask = 0x0f;
sc->rxon.ofdm_mask = 0x15;
}
DPRINTF(sc, IWN_DEBUG_STATE, "rxon chan %d flags %x cck %x ofdm %x\n",
sc->rxon.chan, sc->rxon.flags, sc->rxon.cck_mask,
sc->rxon.ofdm_mask);
error = iwn_cmd(sc, IWN_CMD_RXON, &sc->rxon, sc->rxonsz, 1);
if (error != 0) {
device_printf(sc->sc_dev, "%s: RXON command failed, error %d\n",
__func__, error);
return error;
}
/* Configuration has changed, set TX power accordingly. */
if ((error = ops->set_txpower(sc, ni->ni_chan, 1)) != 0) {
device_printf(sc->sc_dev,
"%s: could not set TX power, error %d\n", __func__, error);
return error;
}
/*
* Reconfiguring RXON clears the firmware nodes table so we must
* add the broadcast node again.
*/
if ((error = iwn_add_broadcast_node(sc, 1)) != 0) {
device_printf(sc->sc_dev,
"%s: could not add broadcast node, error %d\n", __func__,
error);
return error;
}
return 0;
}
static int
iwn_run(struct iwn_softc *sc, struct ieee80211vap *vap)
{
struct iwn_ops *ops = &sc->ops;
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
struct ieee80211_node *ni = vap->iv_bss;
struct iwn_node_info node;
uint32_t htflags = 0;
int error;
if (ic->ic_opmode == IEEE80211_M_MONITOR) {
/* Link LED blinks while monitoring. */
iwn_set_led(sc, IWN_LED_LINK, 5, 5);
return 0;
}
if ((error = iwn_set_timing(sc, ni)) != 0) {
device_printf(sc->sc_dev,
"%s: could not set timing, error %d\n", __func__, error);
return error;
}
/* Update adapter configuration. */
IEEE80211_ADDR_COPY(sc->rxon.bssid, ni->ni_bssid);
sc->rxon.associd = htole16(IEEE80211_AID(ni->ni_associd));
sc->rxon.chan = ieee80211_chan2ieee(ic, ni->ni_chan);
sc->rxon.flags = htole32(IWN_RXON_TSF | IWN_RXON_CTS_TO_SELF);
if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan))
sc->rxon.flags |= htole32(IWN_RXON_AUTO | IWN_RXON_24GHZ);
if (ic->ic_flags & IEEE80211_F_SHSLOT)
sc->rxon.flags |= htole32(IWN_RXON_SHSLOT);
if (ic->ic_flags & IEEE80211_F_SHPREAMBLE)
sc->rxon.flags |= htole32(IWN_RXON_SHPREAMBLE);
if (IEEE80211_IS_CHAN_A(ni->ni_chan)) {
sc->rxon.cck_mask = 0;
sc->rxon.ofdm_mask = 0x15;
} else if (IEEE80211_IS_CHAN_B(ni->ni_chan)) {
sc->rxon.cck_mask = 0x03;
sc->rxon.ofdm_mask = 0;
} else {
/* Assume 802.11b/g. */
sc->rxon.cck_mask = 0x0f;
sc->rxon.ofdm_mask = 0x15;
}
if (IEEE80211_IS_CHAN_HT(ni->ni_chan)) {
htflags |= IWN_RXON_HT_PROTMODE(ic->ic_curhtprotmode);
if (IEEE80211_IS_CHAN_HT40(ni->ni_chan)) {
switch (ic->ic_curhtprotmode) {
case IEEE80211_HTINFO_OPMODE_HT20PR:
htflags |= IWN_RXON_HT_MODEPURE40;
break;
default:
htflags |= IWN_RXON_HT_MODEMIXED;
break;
}
}
if (IEEE80211_IS_CHAN_HT40D(ni->ni_chan))
htflags |= IWN_RXON_HT_HT40MINUS;
}
sc->rxon.flags |= htole32(htflags);
sc->rxon.filter |= htole32(IWN_FILTER_BSS);
DPRINTF(sc, IWN_DEBUG_STATE, "rxon chan %d flags %x\n",
sc->rxon.chan, sc->rxon.flags);
error = iwn_cmd(sc, IWN_CMD_RXON, &sc->rxon, sc->rxonsz, 1);
if (error != 0) {
device_printf(sc->sc_dev,
"%s: could not update configuration, error %d\n", __func__,
error);
return error;
}
/* Configuration has changed, set TX power accordingly. */
if ((error = ops->set_txpower(sc, ni->ni_chan, 1)) != 0) {
device_printf(sc->sc_dev,
"%s: could not set TX power, error %d\n", __func__, error);
return error;
}
/* Fake a join to initialize the TX rate. */
((struct iwn_node *)ni)->id = IWN_ID_BSS;
iwn_newassoc(ni, 1);
/* Add BSS node. */
memset(&node, 0, sizeof node);
IEEE80211_ADDR_COPY(node.macaddr, ni->ni_macaddr);
node.id = IWN_ID_BSS;
if (IEEE80211_IS_CHAN_HT(ni->ni_chan)) {
switch (ni->ni_htcap & IEEE80211_HTCAP_SMPS) {
case IEEE80211_HTCAP_SMPS_ENA:
node.htflags |= htole32(IWN_SMPS_MIMO_DIS);
break;
case IEEE80211_HTCAP_SMPS_DYNAMIC:
node.htflags |= htole32(IWN_SMPS_MIMO_PROT);
break;
}
node.htflags |= htole32(IWN_AMDPU_SIZE_FACTOR(3) |
IWN_AMDPU_DENSITY(5)); /* 4us */
if (IEEE80211_IS_CHAN_HT40(ni->ni_chan))
node.htflags |= htole32(IWN_NODE_HT40);
}
DPRINTF(sc, IWN_DEBUG_STATE, "%s: adding BSS node\n", __func__);
error = ops->add_node(sc, &node, 1);
if (error != 0) {
device_printf(sc->sc_dev,
"%s: could not add BSS node, error %d\n", __func__, error);
return error;
}
DPRINTF(sc, IWN_DEBUG_STATE, "%s: setting link quality for node %d\n",
__func__, node.id);
if ((error = iwn_set_link_quality(sc, ni)) != 0) {
device_printf(sc->sc_dev,
"%s: could not setup link quality for node %d, error %d\n",
__func__, node.id, error);
return error;
}
if ((error = iwn_init_sensitivity(sc)) != 0) {
device_printf(sc->sc_dev,
"%s: could not set sensitivity, error %d\n", __func__,
error);
return error;
}
/* Start periodic calibration timer. */
sc->calib.state = IWN_CALIB_STATE_ASSOC;
sc->calib_cnt = 0;
callout_reset(&sc->calib_to, msecs_to_ticks(500), iwn_calib_timeout,
sc);
/* Link LED always on while associated. */
iwn_set_led(sc, IWN_LED_LINK, 0, 1);
return 0;
}
/*
* This function is called by upper layer when an ADDBA request is received
* from another STA and before the ADDBA response is sent.
*/
static int
iwn_ampdu_rx_start(struct ieee80211_node *ni, struct ieee80211_rx_ampdu *rap,
int baparamset, int batimeout, int baseqctl)
{
#define MS(_v, _f) (((_v) & _f) >> _f##_S)
struct iwn_softc *sc = ni->ni_ic->ic_ifp->if_softc;
struct iwn_ops *ops = &sc->ops;
struct iwn_node *wn = (void *)ni;
struct iwn_node_info node;
uint16_t ssn;
uint8_t tid;
int error;
tid = MS(le16toh(baparamset), IEEE80211_BAPS_TID);
ssn = MS(le16toh(baseqctl), IEEE80211_BASEQ_START);
memset(&node, 0, sizeof node);
node.id = wn->id;
node.control = IWN_NODE_UPDATE;
node.flags = IWN_FLAG_SET_ADDBA;
node.addba_tid = tid;
node.addba_ssn = htole16(ssn);
DPRINTF(sc, IWN_DEBUG_RECV, "ADDBA RA=%d TID=%d SSN=%d\n",
wn->id, tid, ssn);
error = ops->add_node(sc, &node, 1);
if (error != 0)
return error;
return sc->sc_ampdu_rx_start(ni, rap, baparamset, batimeout, baseqctl);
#undef MS
}
/*
* This function is called by upper layer on teardown of an HT-immediate
* Block Ack agreement (eg. uppon receipt of a DELBA frame).
*/
static void
iwn_ampdu_rx_stop(struct ieee80211_node *ni, struct ieee80211_rx_ampdu *rap)
{
struct ieee80211com *ic = ni->ni_ic;
struct iwn_softc *sc = ic->ic_ifp->if_softc;
struct iwn_ops *ops = &sc->ops;
struct iwn_node *wn = (void *)ni;
struct iwn_node_info node;
uint8_t tid;
/* XXX: tid as an argument */
for (tid = 0; tid < WME_NUM_TID; tid++) {
if (&ni->ni_rx_ampdu[tid] == rap)
break;
}
memset(&node, 0, sizeof node);
node.id = wn->id;
node.control = IWN_NODE_UPDATE;
node.flags = IWN_FLAG_SET_DELBA;
node.delba_tid = tid;
DPRINTF(sc, IWN_DEBUG_RECV, "DELBA RA=%d TID=%d\n", wn->id, tid);
(void)ops->add_node(sc, &node, 1);
sc->sc_ampdu_rx_stop(ni, rap);
}
static int
iwn_addba_request(struct ieee80211_node *ni, struct ieee80211_tx_ampdu *tap,
int dialogtoken, int baparamset, int batimeout)
{
struct iwn_softc *sc = ni->ni_ic->ic_ifp->if_softc;
int qid;
for (qid = sc->firstaggqueue; qid < sc->ntxqs; qid++) {
if (sc->qid2tap[qid] == NULL)
break;
}
if (qid == sc->ntxqs) {
DPRINTF(sc, IWN_DEBUG_XMIT, "%s: not free aggregation queue\n",
__func__);
return 0;
}
tap->txa_private = malloc(sizeof(int), M_DEVBUF, M_NOWAIT);
if (tap->txa_private == NULL) {
device_printf(sc->sc_dev,
"%s: failed to alloc TX aggregation structure\n", __func__);
return 0;
}
sc->qid2tap[qid] = tap;
*(int *)tap->txa_private = qid;
return sc->sc_addba_request(ni, tap, dialogtoken, baparamset,
batimeout);
}
static int
iwn_addba_response(struct ieee80211_node *ni, struct ieee80211_tx_ampdu *tap,
int code, int baparamset, int batimeout)
{
struct iwn_softc *sc = ni->ni_ic->ic_ifp->if_softc;
int qid = *(int *)tap->txa_private;
uint8_t tid = WME_AC_TO_TID(tap->txa_ac);
int ret;
if (code == IEEE80211_STATUS_SUCCESS) {
ni->ni_txseqs[tid] = tap->txa_start & 0xfff;
ret = iwn_ampdu_tx_start(ni->ni_ic, ni, tid);
if (ret != 1)
return ret;
} else {
sc->qid2tap[qid] = NULL;
free(tap->txa_private, M_DEVBUF);
tap->txa_private = NULL;
}
return sc->sc_addba_response(ni, tap, code, baparamset, batimeout);
}
/*
* This function is called by upper layer when an ADDBA response is received
* from another STA.
*/
static int
iwn_ampdu_tx_start(struct ieee80211com *ic, struct ieee80211_node *ni,
uint8_t tid)
{
struct ieee80211_tx_ampdu *tap = &ni->ni_tx_ampdu[TID_TO_WME_AC(tid)];
struct iwn_softc *sc = ni->ni_ic->ic_ifp->if_softc;
struct iwn_ops *ops = &sc->ops;
struct iwn_node *wn = (void *)ni;
struct iwn_node_info node;
int error, qid;
/* Enable TX for the specified RA/TID. */
wn->disable_tid &= ~(1 << tid);
memset(&node, 0, sizeof node);
node.id = wn->id;
node.control = IWN_NODE_UPDATE;
node.flags = IWN_FLAG_SET_DISABLE_TID;
node.disable_tid = htole16(wn->disable_tid);
error = ops->add_node(sc, &node, 1);
if (error != 0)
return 0;
if ((error = iwn_nic_lock(sc)) != 0)
return 0;
qid = *(int *)tap->txa_private;
ops->ampdu_tx_start(sc, ni, qid, tid, tap->txa_start & 0xfff);
iwn_nic_unlock(sc);
iwn_set_link_quality(sc, ni);
return 1;
}
static void
iwn_ampdu_tx_stop(struct ieee80211_node *ni, struct ieee80211_tx_ampdu *tap)
{
struct iwn_softc *sc = ni->ni_ic->ic_ifp->if_softc;
struct iwn_ops *ops = &sc->ops;
uint8_t tid = WME_AC_TO_TID(tap->txa_ac);
int qid;
if (tap->txa_private == NULL)
return;
qid = *(int *)tap->txa_private;
if (iwn_nic_lock(sc) != 0)
return;
ops->ampdu_tx_stop(sc, qid, tid, tap->txa_start & 0xfff);
iwn_nic_unlock(sc);
sc->qid2tap[qid] = NULL;
free(tap->txa_private, M_DEVBUF);
tap->txa_private = NULL;
sc->sc_addba_stop(ni, tap);
}
static void
iwn4965_ampdu_tx_start(struct iwn_softc *sc, struct ieee80211_node *ni,
int qid, uint8_t tid, uint16_t ssn)
{
struct iwn_node *wn = (void *)ni;
/* Stop TX scheduler while we're changing its configuration. */
iwn_prph_write(sc, IWN4965_SCHED_QUEUE_STATUS(qid),
IWN4965_TXQ_STATUS_CHGACT);
/* Assign RA/TID translation to the queue. */
iwn_mem_write_2(sc, sc->sched_base + IWN4965_SCHED_TRANS_TBL(qid),
wn->id << 4 | tid);
/* Enable chain-building mode for the queue. */
iwn_prph_setbits(sc, IWN4965_SCHED_QCHAIN_SEL, 1 << qid);
/* Set starting sequence number from the ADDBA request. */
sc->txq[qid].cur = sc->txq[qid].read = (ssn & 0xff);
IWN_WRITE(sc, IWN_HBUS_TARG_WRPTR, qid << 8 | (ssn & 0xff));
iwn_prph_write(sc, IWN4965_SCHED_QUEUE_RDPTR(qid), ssn);
/* Set scheduler window size. */
iwn_mem_write(sc, sc->sched_base + IWN4965_SCHED_QUEUE_OFFSET(qid),
IWN_SCHED_WINSZ);
/* Set scheduler frame limit. */
iwn_mem_write(sc, sc->sched_base + IWN4965_SCHED_QUEUE_OFFSET(qid) + 4,
IWN_SCHED_LIMIT << 16);
/* Enable interrupts for the queue. */
iwn_prph_setbits(sc, IWN4965_SCHED_INTR_MASK, 1 << qid);
/* Mark the queue as active. */
iwn_prph_write(sc, IWN4965_SCHED_QUEUE_STATUS(qid),
IWN4965_TXQ_STATUS_ACTIVE | IWN4965_TXQ_STATUS_AGGR_ENA |
iwn_tid2fifo[tid] << 1);
}
static void
iwn4965_ampdu_tx_stop(struct iwn_softc *sc, int qid, uint8_t tid, uint16_t ssn)
{
/* Stop TX scheduler while we're changing its configuration. */
iwn_prph_write(sc, IWN4965_SCHED_QUEUE_STATUS(qid),
IWN4965_TXQ_STATUS_CHGACT);
/* Set starting sequence number from the ADDBA request. */
IWN_WRITE(sc, IWN_HBUS_TARG_WRPTR, qid << 8 | (ssn & 0xff));
iwn_prph_write(sc, IWN4965_SCHED_QUEUE_RDPTR(qid), ssn);
/* Disable interrupts for the queue. */
iwn_prph_clrbits(sc, IWN4965_SCHED_INTR_MASK, 1 << qid);
/* Mark the queue as inactive. */
iwn_prph_write(sc, IWN4965_SCHED_QUEUE_STATUS(qid),
IWN4965_TXQ_STATUS_INACTIVE | iwn_tid2fifo[tid] << 1);
}
static void
iwn5000_ampdu_tx_start(struct iwn_softc *sc, struct ieee80211_node *ni,
int qid, uint8_t tid, uint16_t ssn)
{
struct iwn_node *wn = (void *)ni;
/* Stop TX scheduler while we're changing its configuration. */
iwn_prph_write(sc, IWN5000_SCHED_QUEUE_STATUS(qid),
IWN5000_TXQ_STATUS_CHGACT);
/* Assign RA/TID translation to the queue. */
iwn_mem_write_2(sc, sc->sched_base + IWN5000_SCHED_TRANS_TBL(qid),
wn->id << 4 | tid);
/* Enable chain-building mode for the queue. */
iwn_prph_setbits(sc, IWN5000_SCHED_QCHAIN_SEL, 1 << qid);
/* Enable aggregation for the queue. */
iwn_prph_setbits(sc, IWN5000_SCHED_AGGR_SEL, 1 << qid);
/* Set starting sequence number from the ADDBA request. */
sc->txq[qid].cur = sc->txq[qid].read = (ssn & 0xff);
IWN_WRITE(sc, IWN_HBUS_TARG_WRPTR, qid << 8 | (ssn & 0xff));
iwn_prph_write(sc, IWN5000_SCHED_QUEUE_RDPTR(qid), ssn);
/* Set scheduler window size and frame limit. */
iwn_mem_write(sc, sc->sched_base + IWN5000_SCHED_QUEUE_OFFSET(qid) + 4,
IWN_SCHED_LIMIT << 16 | IWN_SCHED_WINSZ);
/* Enable interrupts for the queue. */
iwn_prph_setbits(sc, IWN5000_SCHED_INTR_MASK, 1 << qid);
/* Mark the queue as active. */
iwn_prph_write(sc, IWN5000_SCHED_QUEUE_STATUS(qid),
IWN5000_TXQ_STATUS_ACTIVE | iwn_tid2fifo[tid]);
}
static void
iwn5000_ampdu_tx_stop(struct iwn_softc *sc, int qid, uint8_t tid, uint16_t ssn)
{
/* Stop TX scheduler while we're changing its configuration. */
iwn_prph_write(sc, IWN5000_SCHED_QUEUE_STATUS(qid),
IWN5000_TXQ_STATUS_CHGACT);
/* Disable aggregation for the queue. */
iwn_prph_clrbits(sc, IWN5000_SCHED_AGGR_SEL, 1 << qid);
/* Set starting sequence number from the ADDBA request. */
IWN_WRITE(sc, IWN_HBUS_TARG_WRPTR, qid << 8 | (ssn & 0xff));
iwn_prph_write(sc, IWN5000_SCHED_QUEUE_RDPTR(qid), ssn);
/* Disable interrupts for the queue. */
iwn_prph_clrbits(sc, IWN5000_SCHED_INTR_MASK, 1 << qid);
/* Mark the queue as inactive. */
iwn_prph_write(sc, IWN5000_SCHED_QUEUE_STATUS(qid),
IWN5000_TXQ_STATUS_INACTIVE | iwn_tid2fifo[tid]);
}
/*
* Query calibration tables from the initialization firmware. We do this
* only once at first boot. Called from a process context.
*/
static int
iwn5000_query_calibration(struct iwn_softc *sc)
{
struct iwn5000_calib_config cmd;
int error;
memset(&cmd, 0, sizeof cmd);
cmd.ucode.once.enable = 0xffffffff;
cmd.ucode.once.start = 0xffffffff;
cmd.ucode.once.send = 0xffffffff;
cmd.ucode.flags = 0xffffffff;
DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s: sending calibration query\n",
__func__);
error = iwn_cmd(sc, IWN5000_CMD_CALIB_CONFIG, &cmd, sizeof cmd, 0);
if (error != 0)
return error;
/* Wait at most two seconds for calibration to complete. */
if (!(sc->sc_flags & IWN_FLAG_CALIB_DONE))
error = msleep(sc, &sc->sc_mtx, PCATCH, "iwncal", 2 * hz);
return error;
}
/*
* Send calibration results to the runtime firmware. These results were
* obtained on first boot from the initialization firmware.
*/
static int
iwn5000_send_calibration(struct iwn_softc *sc)
{
int idx, error;
for (idx = 0; idx < 5; idx++) {
if (sc->calibcmd[idx].buf == NULL)
continue; /* No results available. */
DPRINTF(sc, IWN_DEBUG_CALIBRATE,
"send calibration result idx=%d len=%d\n", idx,
sc->calibcmd[idx].len);
error = iwn_cmd(sc, IWN_CMD_PHY_CALIB, sc->calibcmd[idx].buf,
sc->calibcmd[idx].len, 0);
if (error != 0) {
device_printf(sc->sc_dev,
"%s: could not send calibration result, error %d\n",
__func__, error);
return error;
}
}
return 0;
}
static int
iwn5000_send_wimax_coex(struct iwn_softc *sc)
{
struct iwn5000_wimax_coex wimax;
#ifdef notyet
if (sc->hw_type == IWN_HW_REV_TYPE_6050) {
/* Enable WiMAX coexistence for combo adapters. */
wimax.flags =
IWN_WIMAX_COEX_ASSOC_WA_UNMASK |
IWN_WIMAX_COEX_UNASSOC_WA_UNMASK |
IWN_WIMAX_COEX_STA_TABLE_VALID |
IWN_WIMAX_COEX_ENABLE;
memcpy(wimax.events, iwn6050_wimax_events,
sizeof iwn6050_wimax_events);
} else
#endif
{
/* Disable WiMAX coexistence. */
wimax.flags = 0;
memset(wimax.events, 0, sizeof wimax.events);
}
DPRINTF(sc, IWN_DEBUG_RESET, "%s: Configuring WiMAX coexistence\n",
__func__);
return iwn_cmd(sc, IWN5000_CMD_WIMAX_COEX, &wimax, sizeof wimax, 0);
}
static int
iwn5000_crystal_calib(struct iwn_softc *sc)
{
struct iwn5000_phy_calib_crystal cmd;
memset(&cmd, 0, sizeof cmd);
cmd.code = IWN5000_PHY_CALIB_CRYSTAL;
cmd.ngroups = 1;
cmd.isvalid = 1;
cmd.cap_pin[0] = le32toh(sc->eeprom_crystal) & 0xff;
cmd.cap_pin[1] = (le32toh(sc->eeprom_crystal) >> 16) & 0xff;
DPRINTF(sc, IWN_DEBUG_CALIBRATE, "sending crystal calibration %d, %d\n",
cmd.cap_pin[0], cmd.cap_pin[1]);
return iwn_cmd(sc, IWN_CMD_PHY_CALIB, &cmd, sizeof cmd, 0);
}
static int
iwn5000_temp_offset_calib(struct iwn_softc *sc)
{
struct iwn5000_phy_calib_temp_offset cmd;
memset(&cmd, 0, sizeof cmd);
cmd.code = IWN5000_PHY_CALIB_TEMP_OFFSET;
cmd.ngroups = 1;
cmd.isvalid = 1;
if (sc->eeprom_temp != 0)
cmd.offset = htole16(sc->eeprom_temp);
else
cmd.offset = htole16(IWN_DEFAULT_TEMP_OFFSET);
DPRINTF(sc, IWN_DEBUG_CALIBRATE, "setting radio sensor offset to %d\n",
le16toh(cmd.offset));
return iwn_cmd(sc, IWN_CMD_PHY_CALIB, &cmd, sizeof cmd, 0);
}
/*
* This function is called after the runtime firmware notifies us of its
* readiness (called in a process context).
*/
static int
iwn4965_post_alive(struct iwn_softc *sc)
{
int error, qid;
if ((error = iwn_nic_lock(sc)) != 0)
return error;
/* Clear TX scheduler state in SRAM. */
sc->sched_base = iwn_prph_read(sc, IWN_SCHED_SRAM_ADDR);
iwn_mem_set_region_4(sc, sc->sched_base + IWN4965_SCHED_CTX_OFF, 0,
IWN4965_SCHED_CTX_LEN / sizeof (uint32_t));
/* Set physical address of TX scheduler rings (1KB aligned). */
iwn_prph_write(sc, IWN4965_SCHED_DRAM_ADDR, sc->sched_dma.paddr >> 10);
IWN_SETBITS(sc, IWN_FH_TX_CHICKEN, IWN_FH_TX_CHICKEN_SCHED_RETRY);
/* Disable chain mode for all our 16 queues. */
iwn_prph_write(sc, IWN4965_SCHED_QCHAIN_SEL, 0);
for (qid = 0; qid < IWN4965_NTXQUEUES; qid++) {
iwn_prph_write(sc, IWN4965_SCHED_QUEUE_RDPTR(qid), 0);
IWN_WRITE(sc, IWN_HBUS_TARG_WRPTR, qid << 8 | 0);
/* Set scheduler window size. */
iwn_mem_write(sc, sc->sched_base +
IWN4965_SCHED_QUEUE_OFFSET(qid), IWN_SCHED_WINSZ);
/* Set scheduler frame limit. */
iwn_mem_write(sc, sc->sched_base +
IWN4965_SCHED_QUEUE_OFFSET(qid) + 4,
IWN_SCHED_LIMIT << 16);
}
/* Enable interrupts for all our 16 queues. */
iwn_prph_write(sc, IWN4965_SCHED_INTR_MASK, 0xffff);
/* Identify TX FIFO rings (0-7). */
iwn_prph_write(sc, IWN4965_SCHED_TXFACT, 0xff);
/* Mark TX rings (4 EDCA + cmd + 2 HCCA) as active. */
for (qid = 0; qid < 7; qid++) {
static uint8_t qid2fifo[] = { 3, 2, 1, 0, 4, 5, 6 };
iwn_prph_write(sc, IWN4965_SCHED_QUEUE_STATUS(qid),
IWN4965_TXQ_STATUS_ACTIVE | qid2fifo[qid] << 1);
}
iwn_nic_unlock(sc);
return 0;
}
/*
* This function is called after the initialization or runtime firmware
* notifies us of its readiness (called in a process context).
*/
static int
iwn5000_post_alive(struct iwn_softc *sc)
{
int error, qid;
/* Switch to using ICT interrupt mode. */
iwn5000_ict_reset(sc);
if ((error = iwn_nic_lock(sc)) != 0)
return error;
/* Clear TX scheduler state in SRAM. */
sc->sched_base = iwn_prph_read(sc, IWN_SCHED_SRAM_ADDR);
iwn_mem_set_region_4(sc, sc->sched_base + IWN5000_SCHED_CTX_OFF, 0,
IWN5000_SCHED_CTX_LEN / sizeof (uint32_t));
/* Set physical address of TX scheduler rings (1KB aligned). */
iwn_prph_write(sc, IWN5000_SCHED_DRAM_ADDR, sc->sched_dma.paddr >> 10);
IWN_SETBITS(sc, IWN_FH_TX_CHICKEN, IWN_FH_TX_CHICKEN_SCHED_RETRY);
/* Enable chain mode for all queues, except command queue. */
iwn_prph_write(sc, IWN5000_SCHED_QCHAIN_SEL, 0xfffef);
iwn_prph_write(sc, IWN5000_SCHED_AGGR_SEL, 0);
for (qid = 0; qid < IWN5000_NTXQUEUES; qid++) {
iwn_prph_write(sc, IWN5000_SCHED_QUEUE_RDPTR(qid), 0);
IWN_WRITE(sc, IWN_HBUS_TARG_WRPTR, qid << 8 | 0);
iwn_mem_write(sc, sc->sched_base +
IWN5000_SCHED_QUEUE_OFFSET(qid), 0);
/* Set scheduler window size and frame limit. */
iwn_mem_write(sc, sc->sched_base +
IWN5000_SCHED_QUEUE_OFFSET(qid) + 4,
IWN_SCHED_LIMIT << 16 | IWN_SCHED_WINSZ);
}
/* Enable interrupts for all our 20 queues. */
iwn_prph_write(sc, IWN5000_SCHED_INTR_MASK, 0xfffff);
/* Identify TX FIFO rings (0-7). */
iwn_prph_write(sc, IWN5000_SCHED_TXFACT, 0xff);
/* Mark TX rings (4 EDCA + cmd + 2 HCCA) as active. */
for (qid = 0; qid < 7; qid++) {
static uint8_t qid2fifo[] = { 3, 2, 1, 0, 7, 5, 6 };
iwn_prph_write(sc, IWN5000_SCHED_QUEUE_STATUS(qid),
IWN5000_TXQ_STATUS_ACTIVE | qid2fifo[qid]);
}
iwn_nic_unlock(sc);
/* Configure WiMAX coexistence for combo adapters. */
error = iwn5000_send_wimax_coex(sc);
if (error != 0) {
device_printf(sc->sc_dev,
"%s: could not configure WiMAX coexistence, error %d\n",
__func__, error);
return error;
}
if (sc->hw_type != IWN_HW_REV_TYPE_5150) {
/* Perform crystal calibration. */
error = iwn5000_crystal_calib(sc);
if (error != 0) {
device_printf(sc->sc_dev,
"%s: crystal calibration failed, error %d\n",
__func__, error);
return error;
}
}
if (!(sc->sc_flags & IWN_FLAG_CALIB_DONE)) {
/* Query calibration from the initialization firmware. */
if ((error = iwn5000_query_calibration(sc)) != 0) {
device_printf(sc->sc_dev,
"%s: could not query calibration, error %d\n",
__func__, error);
return error;
}
/*
* We have the calibration results now, reboot with the
* runtime firmware (call ourselves recursively!)
*/
iwn_hw_stop(sc);
error = iwn_hw_init(sc);
} else {
/* Send calibration results to runtime firmware. */
error = iwn5000_send_calibration(sc);
}
return error;
}
/*
* The firmware boot code is small and is intended to be copied directly into
* the NIC internal memory (no DMA transfer).
*/
static int
iwn4965_load_bootcode(struct iwn_softc *sc, const uint8_t *ucode, int size)
{
int error, ntries;
size /= sizeof (uint32_t);
if ((error = iwn_nic_lock(sc)) != 0)
return error;
/* Copy microcode image into NIC memory. */
iwn_prph_write_region_4(sc, IWN_BSM_SRAM_BASE,
(const uint32_t *)ucode, size);
iwn_prph_write(sc, IWN_BSM_WR_MEM_SRC, 0);
iwn_prph_write(sc, IWN_BSM_WR_MEM_DST, IWN_FW_TEXT_BASE);
iwn_prph_write(sc, IWN_BSM_WR_DWCOUNT, size);
/* Start boot load now. */
iwn_prph_write(sc, IWN_BSM_WR_CTRL, IWN_BSM_WR_CTRL_START);
/* Wait for transfer to complete. */
for (ntries = 0; ntries < 1000; ntries++) {
if (!(iwn_prph_read(sc, IWN_BSM_WR_CTRL) &
IWN_BSM_WR_CTRL_START))
break;
DELAY(10);
}
if (ntries == 1000) {
device_printf(sc->sc_dev, "%s: could not load boot firmware\n",
__func__);
iwn_nic_unlock(sc);
return ETIMEDOUT;
}
/* Enable boot after power up. */
iwn_prph_write(sc, IWN_BSM_WR_CTRL, IWN_BSM_WR_CTRL_START_EN);
iwn_nic_unlock(sc);
return 0;
}
static int
iwn4965_load_firmware(struct iwn_softc *sc)
{
struct iwn_fw_info *fw = &sc->fw;
struct iwn_dma_info *dma = &sc->fw_dma;
int error;
/* Copy initialization sections into pre-allocated DMA-safe memory. */
memcpy(dma->vaddr, fw->init.data, fw->init.datasz);
bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE);
memcpy(dma->vaddr + IWN4965_FW_DATA_MAXSZ,
fw->init.text, fw->init.textsz);
bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE);
/* Tell adapter where to find initialization sections. */
if ((error = iwn_nic_lock(sc)) != 0)
return error;
iwn_prph_write(sc, IWN_BSM_DRAM_DATA_ADDR, dma->paddr >> 4);
iwn_prph_write(sc, IWN_BSM_DRAM_DATA_SIZE, fw->init.datasz);
iwn_prph_write(sc, IWN_BSM_DRAM_TEXT_ADDR,
(dma->paddr + IWN4965_FW_DATA_MAXSZ) >> 4);
iwn_prph_write(sc, IWN_BSM_DRAM_TEXT_SIZE, fw->init.textsz);
iwn_nic_unlock(sc);
/* Load firmware boot code. */
error = iwn4965_load_bootcode(sc, fw->boot.text, fw->boot.textsz);
if (error != 0) {
device_printf(sc->sc_dev, "%s: could not load boot firmware\n",
__func__);
return error;
}
/* Now press "execute". */
IWN_WRITE(sc, IWN_RESET, 0);
/* Wait at most one second for first alive notification. */
if ((error = msleep(sc, &sc->sc_mtx, PCATCH, "iwninit", hz)) != 0) {
device_printf(sc->sc_dev,
"%s: timeout waiting for adapter to initialize, error %d\n",
__func__, error);
return error;
}
/* Retrieve current temperature for initial TX power calibration. */
sc->rawtemp = sc->ucode_info.temp[3].chan20MHz;
sc->temp = iwn4965_get_temperature(sc);
/* Copy runtime sections into pre-allocated DMA-safe memory. */
memcpy(dma->vaddr, fw->main.data, fw->main.datasz);
bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE);
memcpy(dma->vaddr + IWN4965_FW_DATA_MAXSZ,
fw->main.text, fw->main.textsz);
bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE);
/* Tell adapter where to find runtime sections. */
if ((error = iwn_nic_lock(sc)) != 0)
return error;
iwn_prph_write(sc, IWN_BSM_DRAM_DATA_ADDR, dma->paddr >> 4);
iwn_prph_write(sc, IWN_BSM_DRAM_DATA_SIZE, fw->main.datasz);
iwn_prph_write(sc, IWN_BSM_DRAM_TEXT_ADDR,
(dma->paddr + IWN4965_FW_DATA_MAXSZ) >> 4);
iwn_prph_write(sc, IWN_BSM_DRAM_TEXT_SIZE,
IWN_FW_UPDATED | fw->main.textsz);
iwn_nic_unlock(sc);
return 0;
}
static int
iwn5000_load_firmware_section(struct iwn_softc *sc, uint32_t dst,
const uint8_t *section, int size)
{
struct iwn_dma_info *dma = &sc->fw_dma;
int error;
/* Copy firmware section into pre-allocated DMA-safe memory. */
memcpy(dma->vaddr, section, size);
bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE);
if ((error = iwn_nic_lock(sc)) != 0)
return error;
IWN_WRITE(sc, IWN_FH_TX_CONFIG(IWN_SRVC_DMACHNL),
IWN_FH_TX_CONFIG_DMA_PAUSE);
IWN_WRITE(sc, IWN_FH_SRAM_ADDR(IWN_SRVC_DMACHNL), dst);
IWN_WRITE(sc, IWN_FH_TFBD_CTRL0(IWN_SRVC_DMACHNL),
IWN_LOADDR(dma->paddr));
IWN_WRITE(sc, IWN_FH_TFBD_CTRL1(IWN_SRVC_DMACHNL),
IWN_HIADDR(dma->paddr) << 28 | size);
IWN_WRITE(sc, IWN_FH_TXBUF_STATUS(IWN_SRVC_DMACHNL),
IWN_FH_TXBUF_STATUS_TBNUM(1) |
IWN_FH_TXBUF_STATUS_TBIDX(1) |
IWN_FH_TXBUF_STATUS_TFBD_VALID);
/* Kick Flow Handler to start DMA transfer. */
IWN_WRITE(sc, IWN_FH_TX_CONFIG(IWN_SRVC_DMACHNL),
IWN_FH_TX_CONFIG_DMA_ENA | IWN_FH_TX_CONFIG_CIRQ_HOST_ENDTFD);
iwn_nic_unlock(sc);
/* Wait at most five seconds for FH DMA transfer to complete. */
return msleep(sc, &sc->sc_mtx, PCATCH, "iwninit", 5 * hz);
}
static int
iwn5000_load_firmware(struct iwn_softc *sc)
{
struct iwn_fw_part *fw;
int error;
/* Load the initialization firmware on first boot only. */
fw = (sc->sc_flags & IWN_FLAG_CALIB_DONE) ?
&sc->fw.main : &sc->fw.init;
error = iwn5000_load_firmware_section(sc, IWN_FW_TEXT_BASE,
fw->text, fw->textsz);
if (error != 0) {
device_printf(sc->sc_dev,
"%s: could not load firmware %s section, error %d\n",
__func__, ".text", error);
return error;
}
error = iwn5000_load_firmware_section(sc, IWN_FW_DATA_BASE,
fw->data, fw->datasz);
if (error != 0) {
device_printf(sc->sc_dev,
"%s: could not load firmware %s section, error %d\n",
__func__, ".data", error);
return error;
}
/* Now press "execute". */
IWN_WRITE(sc, IWN_RESET, 0);
return 0;
}
/*
* Extract text and data sections from a legacy firmware image.
*/
static int
iwn_read_firmware_leg(struct iwn_softc *sc, struct iwn_fw_info *fw)
{
const uint32_t *ptr;
size_t hdrlen = 24;
uint32_t rev;
ptr = (const uint32_t *)fw->data;
rev = le32toh(*ptr++);
/* Check firmware API version. */
if (IWN_FW_API(rev) <= 1) {
device_printf(sc->sc_dev,
"%s: bad firmware, need API version >=2\n", __func__);
return EINVAL;
}
if (IWN_FW_API(rev) >= 3) {
/* Skip build number (version 2 header). */
hdrlen += 4;
ptr++;
}
if (fw->size < hdrlen) {
device_printf(sc->sc_dev, "%s: firmware too short: %zu bytes\n",
__func__, fw->size);
return EINVAL;
}
fw->main.textsz = le32toh(*ptr++);
fw->main.datasz = le32toh(*ptr++);
fw->init.textsz = le32toh(*ptr++);
fw->init.datasz = le32toh(*ptr++);
fw->boot.textsz = le32toh(*ptr++);
/* Check that all firmware sections fit. */
if (fw->size < hdrlen + fw->main.textsz + fw->main.datasz +
fw->init.textsz + fw->init.datasz + fw->boot.textsz) {
device_printf(sc->sc_dev, "%s: firmware too short: %zu bytes\n",
__func__, fw->size);
return EINVAL;
}
/* Get pointers to firmware sections. */
fw->main.text = (const uint8_t *)ptr;
fw->main.data = fw->main.text + fw->main.textsz;
fw->init.text = fw->main.data + fw->main.datasz;
fw->init.data = fw->init.text + fw->init.textsz;
fw->boot.text = fw->init.data + fw->init.datasz;
return 0;
}
/*
* Extract text and data sections from a TLV firmware image.
*/
static int
iwn_read_firmware_tlv(struct iwn_softc *sc, struct iwn_fw_info *fw,
uint16_t alt)
{
const struct iwn_fw_tlv_hdr *hdr;
const struct iwn_fw_tlv *tlv;
const uint8_t *ptr, *end;
uint64_t altmask;
uint32_t len, tmp;
if (fw->size < sizeof (*hdr)) {
device_printf(sc->sc_dev, "%s: firmware too short: %zu bytes\n",
__func__, fw->size);
return EINVAL;
}
hdr = (const struct iwn_fw_tlv_hdr *)fw->data;
if (hdr->signature != htole32(IWN_FW_SIGNATURE)) {
device_printf(sc->sc_dev, "%s: bad firmware signature 0x%08x\n",
__func__, le32toh(hdr->signature));
return EINVAL;
}
DPRINTF(sc, IWN_DEBUG_RESET, "FW: \"%.64s\", build 0x%x\n", hdr->descr,
le32toh(hdr->build));
/*
* Select the closest supported alternative that is less than
* or equal to the specified one.
*/
altmask = le64toh(hdr->altmask);
while (alt > 0 && !(altmask & (1ULL << alt)))
alt--; /* Downgrade. */
DPRINTF(sc, IWN_DEBUG_RESET, "using alternative %d\n", alt);
ptr = (const uint8_t *)(hdr + 1);
end = (const uint8_t *)(fw->data + fw->size);
/* Parse type-length-value fields. */
while (ptr + sizeof (*tlv) <= end) {
tlv = (const struct iwn_fw_tlv *)ptr;
len = le32toh(tlv->len);
ptr += sizeof (*tlv);
if (ptr + len > end) {
device_printf(sc->sc_dev,
"%s: firmware too short: %zu bytes\n", __func__,
fw->size);
return EINVAL;
}
/* Skip other alternatives. */
if (tlv->alt != 0 && tlv->alt != htole16(alt))
goto next;
switch (le16toh(tlv->type)) {
case IWN_FW_TLV_MAIN_TEXT:
fw->main.text = ptr;
fw->main.textsz = len;
break;
case IWN_FW_TLV_MAIN_DATA:
fw->main.data = ptr;
fw->main.datasz = len;
break;
case IWN_FW_TLV_INIT_TEXT:
fw->init.text = ptr;
fw->init.textsz = len;
break;
case IWN_FW_TLV_INIT_DATA:
fw->init.data = ptr;
fw->init.datasz = len;
break;
case IWN_FW_TLV_BOOT_TEXT:
fw->boot.text = ptr;
fw->boot.textsz = len;
break;
case IWN_FW_TLV_ENH_SENS:
if (!len)
sc->sc_flags |= IWN_FLAG_ENH_SENS;
break;
case IWN_FW_TLV_PHY_CALIB:
tmp = htole32(*ptr);
if (tmp < 253) {
sc->reset_noise_gain = tmp;
sc->noise_gain = tmp + 1;
}
break;
default:
DPRINTF(sc, IWN_DEBUG_RESET,
"TLV type %d not handled\n", le16toh(tlv->type));
break;
}
next: /* TLV fields are 32-bit aligned. */
ptr += (len + 3) & ~3;
}
return 0;
}
static int
iwn_read_firmware(struct iwn_softc *sc)
{
struct iwn_fw_info *fw = &sc->fw;
int error;
IWN_UNLOCK(sc);
memset(fw, 0, sizeof (*fw));
/* Read firmware image from filesystem. */
sc->fw_fp = firmware_get(sc->fwname);
if (sc->fw_fp == NULL) {
device_printf(sc->sc_dev, "%s: could not read firmware %s\n",
__func__, sc->fwname);
IWN_LOCK(sc);
return EINVAL;
}
IWN_LOCK(sc);
fw->size = sc->fw_fp->datasize;
fw->data = (const uint8_t *)sc->fw_fp->data;
if (fw->size < sizeof (uint32_t)) {
device_printf(sc->sc_dev, "%s: firmware too short: %zu bytes\n",
__func__, fw->size);
firmware_put(sc->fw_fp, FIRMWARE_UNLOAD);
sc->fw_fp = NULL;
return EINVAL;
}
/* Retrieve text and data sections. */
if (*(const uint32_t *)fw->data != 0) /* Legacy image. */
error = iwn_read_firmware_leg(sc, fw);
else
error = iwn_read_firmware_tlv(sc, fw, 1);
if (error != 0) {
device_printf(sc->sc_dev,
"%s: could not read firmware sections, error %d\n",
__func__, error);
firmware_put(sc->fw_fp, FIRMWARE_UNLOAD);
sc->fw_fp = NULL;
return error;
}
/* Make sure text and data sections fit in hardware memory. */
if (fw->main.textsz > sc->fw_text_maxsz ||
fw->main.datasz > sc->fw_data_maxsz ||
fw->init.textsz > sc->fw_text_maxsz ||
fw->init.datasz > sc->fw_data_maxsz ||
fw->boot.textsz > IWN_FW_BOOT_TEXT_MAXSZ ||
(fw->boot.textsz & 3) != 0) {
device_printf(sc->sc_dev, "%s: firmware sections too large\n",
__func__);
firmware_put(sc->fw_fp, FIRMWARE_UNLOAD);
sc->fw_fp = NULL;
return EINVAL;
}
/* We can proceed with loading the firmware. */
return 0;
}
static int
iwn_clock_wait(struct iwn_softc *sc)
{
int ntries;
/* Set "initialization complete" bit. */
IWN_SETBITS(sc, IWN_GP_CNTRL, IWN_GP_CNTRL_INIT_DONE);
/* Wait for clock stabilization. */
for (ntries = 0; ntries < 2500; ntries++) {
if (IWN_READ(sc, IWN_GP_CNTRL) & IWN_GP_CNTRL_MAC_CLOCK_READY)
return 0;
DELAY(10);
}
device_printf(sc->sc_dev,
"%s: timeout waiting for clock stabilization\n", __func__);
return ETIMEDOUT;
}
static int
iwn_apm_init(struct iwn_softc *sc)
{
uint32_t reg;
int error;
/* Disable L0s exit timer (NMI bug workaround). */
IWN_SETBITS(sc, IWN_GIO_CHICKEN, IWN_GIO_CHICKEN_DIS_L0S_TIMER);
/* Don't wait for ICH L0s (ICH bug workaround). */
IWN_SETBITS(sc, IWN_GIO_CHICKEN, IWN_GIO_CHICKEN_L1A_NO_L0S_RX);
/* Set FH wait threshold to max (HW bug under stress workaround). */
IWN_SETBITS(sc, IWN_DBG_HPET_MEM, 0xffff0000);
/* Enable HAP INTA to move adapter from L1a to L0s. */
IWN_SETBITS(sc, IWN_HW_IF_CONFIG, IWN_HW_IF_CONFIG_HAP_WAKE_L1A);
/* Retrieve PCIe Active State Power Management (ASPM). */
reg = pci_read_config(sc->sc_dev, sc->sc_cap_off + 0x10, 1);
/* Workaround for HW instability in PCIe L0->L0s->L1 transition. */
if (reg & 0x02) /* L1 Entry enabled. */
IWN_SETBITS(sc, IWN_GIO, IWN_GIO_L0S_ENA);
else
IWN_CLRBITS(sc, IWN_GIO, IWN_GIO_L0S_ENA);
if (sc->hw_type != IWN_HW_REV_TYPE_4965 &&
sc->hw_type <= IWN_HW_REV_TYPE_1000)
IWN_SETBITS(sc, IWN_ANA_PLL, IWN_ANA_PLL_INIT);
/* Wait for clock stabilization before accessing prph. */
if ((error = iwn_clock_wait(sc)) != 0)
return error;
if ((error = iwn_nic_lock(sc)) != 0)
return error;
if (sc->hw_type == IWN_HW_REV_TYPE_4965) {
/* Enable DMA and BSM (Bootstrap State Machine). */
iwn_prph_write(sc, IWN_APMG_CLK_EN,
IWN_APMG_CLK_CTRL_DMA_CLK_RQT |
IWN_APMG_CLK_CTRL_BSM_CLK_RQT);
} else {
/* Enable DMA. */
iwn_prph_write(sc, IWN_APMG_CLK_EN,
IWN_APMG_CLK_CTRL_DMA_CLK_RQT);
}
DELAY(20);
/* Disable L1-Active. */
iwn_prph_setbits(sc, IWN_APMG_PCI_STT, IWN_APMG_PCI_STT_L1A_DIS);
iwn_nic_unlock(sc);
return 0;
}
static void
iwn_apm_stop_master(struct iwn_softc *sc)
{
int ntries;
/* Stop busmaster DMA activity. */
IWN_SETBITS(sc, IWN_RESET, IWN_RESET_STOP_MASTER);
for (ntries = 0; ntries < 100; ntries++) {
if (IWN_READ(sc, IWN_RESET) & IWN_RESET_MASTER_DISABLED)
return;
DELAY(10);
}
device_printf(sc->sc_dev, "%s: timeout waiting for master\n", __func__);
}
static void
iwn_apm_stop(struct iwn_softc *sc)
{
iwn_apm_stop_master(sc);
/* Reset the entire device. */
IWN_SETBITS(sc, IWN_RESET, IWN_RESET_SW);
DELAY(10);
/* Clear "initialization complete" bit. */
IWN_CLRBITS(sc, IWN_GP_CNTRL, IWN_GP_CNTRL_INIT_DONE);
}
static int
iwn4965_nic_config(struct iwn_softc *sc)
{
if (IWN_RFCFG_TYPE(sc->rfcfg) == 1) {
/*
* I don't believe this to be correct but this is what the
* vendor driver is doing. Probably the bits should not be
* shifted in IWN_RFCFG_*.
*/
IWN_SETBITS(sc, IWN_HW_IF_CONFIG,
IWN_RFCFG_TYPE(sc->rfcfg) |
IWN_RFCFG_STEP(sc->rfcfg) |
IWN_RFCFG_DASH(sc->rfcfg));
}
IWN_SETBITS(sc, IWN_HW_IF_CONFIG,
IWN_HW_IF_CONFIG_RADIO_SI | IWN_HW_IF_CONFIG_MAC_SI);
return 0;
}
static int
iwn5000_nic_config(struct iwn_softc *sc)
{
uint32_t tmp;
int error;
if (IWN_RFCFG_TYPE(sc->rfcfg) < 3) {
IWN_SETBITS(sc, IWN_HW_IF_CONFIG,
IWN_RFCFG_TYPE(sc->rfcfg) |
IWN_RFCFG_STEP(sc->rfcfg) |
IWN_RFCFG_DASH(sc->rfcfg));
}
IWN_SETBITS(sc, IWN_HW_IF_CONFIG,
IWN_HW_IF_CONFIG_RADIO_SI | IWN_HW_IF_CONFIG_MAC_SI);
if ((error = iwn_nic_lock(sc)) != 0)
return error;
iwn_prph_setbits(sc, IWN_APMG_PS, IWN_APMG_PS_EARLY_PWROFF_DIS);
if (sc->hw_type == IWN_HW_REV_TYPE_1000) {
/*
* Select first Switching Voltage Regulator (1.32V) to
* solve a stability issue related to noisy DC2DC line
* in the silicon of 1000 Series.
*/
tmp = iwn_prph_read(sc, IWN_APMG_DIGITAL_SVR);
tmp &= ~IWN_APMG_DIGITAL_SVR_VOLTAGE_MASK;
tmp |= IWN_APMG_DIGITAL_SVR_VOLTAGE_1_32;
iwn_prph_write(sc, IWN_APMG_DIGITAL_SVR, tmp);
}
iwn_nic_unlock(sc);
if (sc->sc_flags & IWN_FLAG_INTERNAL_PA) {
/* Use internal power amplifier only. */
IWN_WRITE(sc, IWN_GP_DRIVER, IWN_GP_DRIVER_RADIO_2X2_IPA);
}
if ((sc->hw_type == IWN_HW_REV_TYPE_6050 ||
sc->hw_type == IWN_HW_REV_TYPE_6005) && sc->calib_ver >= 6) {
/* Indicate that ROM calibration version is >=6. */
IWN_SETBITS(sc, IWN_GP_DRIVER, IWN_GP_DRIVER_CALIB_VER6);
}
if (sc->hw_type == IWN_HW_REV_TYPE_6005)
IWN_SETBITS(sc, IWN_GP_DRIVER, IWN_GP_DRIVER_6050_1X2);
return 0;
}
/*
* Take NIC ownership over Intel Active Management Technology (AMT).
*/
static int
iwn_hw_prepare(struct iwn_softc *sc)
{
int ntries;
/* Check if hardware is ready. */
IWN_SETBITS(sc, IWN_HW_IF_CONFIG, IWN_HW_IF_CONFIG_NIC_READY);
for (ntries = 0; ntries < 5; ntries++) {
if (IWN_READ(sc, IWN_HW_IF_CONFIG) &
IWN_HW_IF_CONFIG_NIC_READY)
return 0;
DELAY(10);
}
/* Hardware not ready, force into ready state. */
IWN_SETBITS(sc, IWN_HW_IF_CONFIG, IWN_HW_IF_CONFIG_PREPARE);
for (ntries = 0; ntries < 15000; ntries++) {
if (!(IWN_READ(sc, IWN_HW_IF_CONFIG) &
IWN_HW_IF_CONFIG_PREPARE_DONE))
break;
DELAY(10);
}
if (ntries == 15000)
return ETIMEDOUT;
/* Hardware should be ready now. */
IWN_SETBITS(sc, IWN_HW_IF_CONFIG, IWN_HW_IF_CONFIG_NIC_READY);
for (ntries = 0; ntries < 5; ntries++) {
if (IWN_READ(sc, IWN_HW_IF_CONFIG) &
IWN_HW_IF_CONFIG_NIC_READY)
return 0;
DELAY(10);
}
return ETIMEDOUT;
}
static int
iwn_hw_init(struct iwn_softc *sc)
{
struct iwn_ops *ops = &sc->ops;
int error, chnl, qid;
/* Clear pending interrupts. */
IWN_WRITE(sc, IWN_INT, 0xffffffff);
if ((error = iwn_apm_init(sc)) != 0) {
device_printf(sc->sc_dev,
"%s: could not power ON adapter, error %d\n", __func__,
error);
return error;
}
/* Select VMAIN power source. */
if ((error = iwn_nic_lock(sc)) != 0)
return error;
iwn_prph_clrbits(sc, IWN_APMG_PS, IWN_APMG_PS_PWR_SRC_MASK);
iwn_nic_unlock(sc);
/* Perform adapter-specific initialization. */
if ((error = ops->nic_config(sc)) != 0)
return error;
/* Initialize RX ring. */
if ((error = iwn_nic_lock(sc)) != 0)
return error;
IWN_WRITE(sc, IWN_FH_RX_CONFIG, 0);
IWN_WRITE(sc, IWN_FH_RX_WPTR, 0);
/* Set physical address of RX ring (256-byte aligned). */
IWN_WRITE(sc, IWN_FH_RX_BASE, sc->rxq.desc_dma.paddr >> 8);
/* Set physical address of RX status (16-byte aligned). */
IWN_WRITE(sc, IWN_FH_STATUS_WPTR, sc->rxq.stat_dma.paddr >> 4);
/* Enable RX. */
IWN_WRITE(sc, IWN_FH_RX_CONFIG,
IWN_FH_RX_CONFIG_ENA |
IWN_FH_RX_CONFIG_IGN_RXF_EMPTY | /* HW bug workaround */
IWN_FH_RX_CONFIG_IRQ_DST_HOST |
IWN_FH_RX_CONFIG_SINGLE_FRAME |
IWN_FH_RX_CONFIG_RB_TIMEOUT(0) |
IWN_FH_RX_CONFIG_NRBD(IWN_RX_RING_COUNT_LOG));
iwn_nic_unlock(sc);
IWN_WRITE(sc, IWN_FH_RX_WPTR, (IWN_RX_RING_COUNT - 1) & ~7);
if ((error = iwn_nic_lock(sc)) != 0)
return error;
/* Initialize TX scheduler. */
iwn_prph_write(sc, sc->sched_txfact_addr, 0);
/* Set physical address of "keep warm" page (16-byte aligned). */
IWN_WRITE(sc, IWN_FH_KW_ADDR, sc->kw_dma.paddr >> 4);
/* Initialize TX rings. */
for (qid = 0; qid < sc->ntxqs; qid++) {
struct iwn_tx_ring *txq = &sc->txq[qid];
/* Set physical address of TX ring (256-byte aligned). */
IWN_WRITE(sc, IWN_FH_CBBC_QUEUE(qid),
txq->desc_dma.paddr >> 8);
}
iwn_nic_unlock(sc);
/* Enable DMA channels. */
for (chnl = 0; chnl < sc->ndmachnls; chnl++) {
IWN_WRITE(sc, IWN_FH_TX_CONFIG(chnl),
IWN_FH_TX_CONFIG_DMA_ENA |
IWN_FH_TX_CONFIG_DMA_CREDIT_ENA);
}
/* Clear "radio off" and "commands blocked" bits. */
IWN_WRITE(sc, IWN_UCODE_GP1_CLR, IWN_UCODE_GP1_RFKILL);
IWN_WRITE(sc, IWN_UCODE_GP1_CLR, IWN_UCODE_GP1_CMD_BLOCKED);
/* Clear pending interrupts. */
IWN_WRITE(sc, IWN_INT, 0xffffffff);
/* Enable interrupt coalescing. */
IWN_WRITE(sc, IWN_INT_COALESCING, 512 / 8);
/* Enable interrupts. */
IWN_WRITE(sc, IWN_INT_MASK, sc->int_mask);
/* _Really_ make sure "radio off" bit is cleared! */
IWN_WRITE(sc, IWN_UCODE_GP1_CLR, IWN_UCODE_GP1_RFKILL);
IWN_WRITE(sc, IWN_UCODE_GP1_CLR, IWN_UCODE_GP1_RFKILL);
/* Enable shadow registers. */
if (sc->hw_type >= IWN_HW_REV_TYPE_6000)
IWN_SETBITS(sc, IWN_SHADOW_REG_CTRL, 0x800fffff);
if ((error = ops->load_firmware(sc)) != 0) {
device_printf(sc->sc_dev,
"%s: could not load firmware, error %d\n", __func__,
error);
return error;
}
/* Wait at most one second for firmware alive notification. */
if ((error = msleep(sc, &sc->sc_mtx, PCATCH, "iwninit", hz)) != 0) {
device_printf(sc->sc_dev,
"%s: timeout waiting for adapter to initialize, error %d\n",
__func__, error);
return error;
}
/* Do post-firmware initialization. */
return ops->post_alive(sc);
}
static void
iwn_hw_stop(struct iwn_softc *sc)
{
int chnl, qid, ntries;
IWN_WRITE(sc, IWN_RESET, IWN_RESET_NEVO);
/* Disable interrupts. */
IWN_WRITE(sc, IWN_INT_MASK, 0);
IWN_WRITE(sc, IWN_INT, 0xffffffff);
IWN_WRITE(sc, IWN_FH_INT, 0xffffffff);
sc->sc_flags &= ~IWN_FLAG_USE_ICT;
/* Make sure we no longer hold the NIC lock. */
iwn_nic_unlock(sc);
/* Stop TX scheduler. */
iwn_prph_write(sc, sc->sched_txfact_addr, 0);
/* Stop all DMA channels. */
if (iwn_nic_lock(sc) == 0) {
for (chnl = 0; chnl < sc->ndmachnls; chnl++) {
IWN_WRITE(sc, IWN_FH_TX_CONFIG(chnl), 0);
for (ntries = 0; ntries < 200; ntries++) {
if (IWN_READ(sc, IWN_FH_TX_STATUS) &
IWN_FH_TX_STATUS_IDLE(chnl))
break;
DELAY(10);
}
}
iwn_nic_unlock(sc);
}
/* Stop RX ring. */
iwn_reset_rx_ring(sc, &sc->rxq);
/* Reset all TX rings. */
for (qid = 0; qid < sc->ntxqs; qid++)
iwn_reset_tx_ring(sc, &sc->txq[qid]);
if (iwn_nic_lock(sc) == 0) {
iwn_prph_write(sc, IWN_APMG_CLK_DIS,
IWN_APMG_CLK_CTRL_DMA_CLK_RQT);
iwn_nic_unlock(sc);
}
DELAY(5);
/* Power OFF adapter. */
iwn_apm_stop(sc);
}
static void
iwn_radio_on(void *arg0, int pending)
{
struct iwn_softc *sc = arg0;
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
if (vap != NULL) {
iwn_init(sc);
ieee80211_init(vap);
}
}
static void
iwn_radio_off(void *arg0, int pending)
{
struct iwn_softc *sc = arg0;
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
iwn_stop(sc);
if (vap != NULL)
ieee80211_stop(vap);
/* Enable interrupts to get RF toggle notification. */
IWN_LOCK(sc);
IWN_WRITE(sc, IWN_INT, 0xffffffff);
IWN_WRITE(sc, IWN_INT_MASK, sc->int_mask);
IWN_UNLOCK(sc);
}
static void
iwn_init_locked(struct iwn_softc *sc)
{
struct ifnet *ifp = sc->sc_ifp;
int error;
IWN_LOCK_ASSERT(sc);
if ((error = iwn_hw_prepare(sc)) != 0) {
device_printf(sc->sc_dev, "%s: hardware not ready, error %d\n",
__func__, error);
goto fail;
}
/* Initialize interrupt mask to default value. */
sc->int_mask = IWN_INT_MASK_DEF;
sc->sc_flags &= ~IWN_FLAG_USE_ICT;
/* Check that the radio is not disabled by hardware switch. */
if (!(IWN_READ(sc, IWN_GP_CNTRL) & IWN_GP_CNTRL_RFKILL)) {
device_printf(sc->sc_dev,
"radio is disabled by hardware switch\n");
/* Enable interrupts to get RF toggle notifications. */
IWN_WRITE(sc, IWN_INT, 0xffffffff);
IWN_WRITE(sc, IWN_INT_MASK, sc->int_mask);
return;
}
/* Read firmware images from the filesystem. */
if ((error = iwn_read_firmware(sc)) != 0) {
device_printf(sc->sc_dev,
"%s: could not read firmware, error %d\n", __func__,
error);
goto fail;
}
/* Initialize hardware and upload firmware. */
error = iwn_hw_init(sc);
firmware_put(sc->fw_fp, FIRMWARE_UNLOAD);
sc->fw_fp = NULL;
if (error != 0) {
device_printf(sc->sc_dev,
"%s: could not initialize hardware, error %d\n", __func__,
error);
goto fail;
}
/* Configure adapter now that it is ready. */
if ((error = iwn_config(sc)) != 0) {
device_printf(sc->sc_dev,
"%s: could not configure device, error %d\n", __func__,
error);
goto fail;
}
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
ifp->if_drv_flags |= IFF_DRV_RUNNING;
callout_reset(&sc->watchdog_to, hz, iwn_watchdog, sc);
return;
fail: iwn_stop_locked(sc);
}
static 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);
}
static void
iwn_stop_locked(struct iwn_softc *sc)
{
struct ifnet *ifp = sc->sc_ifp;
IWN_LOCK_ASSERT(sc);
sc->sc_tx_timer = 0;
callout_stop(&sc->watchdog_to);
callout_stop(&sc->calib_to);
ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
/* Power OFF hardware. */
iwn_hw_stop(sc);
}
static 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_LOCK(sc);
/* make the link LED blink while we're scanning */
iwn_set_led(sc, IWN_LED_LINK, 20, 2);
IWN_UNLOCK(sc);
}
/*
* 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;
struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
IWN_LOCK(sc);
if (vap->iv_state == IEEE80211_S_RUN) {
/* Set link LED to ON status if we are associated */
iwn_set_led(sc, IWN_LED_LINK, 0, 1);
}
IWN_UNLOCK(sc);
}
/*
* Callback from net80211 to force a channel change.
*/
static void
iwn_set_channel(struct ieee80211com *ic)
{
const struct ieee80211_channel *c = ic->ic_curchan;
struct ifnet *ifp = ic->ic_ifp;
struct iwn_softc *sc = ifp->if_softc;
int error;
IWN_LOCK(sc);
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);
/*
* Only need to set the channel in Monitor mode. AP scanning and auth
* are already taken care of by their respective firmware commands.
*/
if (ic->ic_opmode == IEEE80211_M_MONITOR) {
error = iwn_config(sc);
if (error != 0)
device_printf(sc->sc_dev,
"%s: error %d settting channel\n", __func__, error);
}
IWN_UNLOCK(sc);
}
/*
* 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;
int error;
IWN_LOCK(sc);
error = iwn_scan(sc);
IWN_UNLOCK(sc);
if (error != 0)
ieee80211_cancel_scan(vap);
}
/*
* 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 */
}
static void
iwn_hw_reset(void *arg0, int pending)
{
struct iwn_softc *sc = arg0;
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
iwn_stop(sc);
iwn_init(sc);
ieee80211_notify_radio(ic, 1);
}
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