// SPDX-License-Identifier: GPL-2.0-or-later /* * * Broadcom B43legacy wireless driver * * Copyright (c) 2005 Martin Langer <[email protected]> * Copyright (c) 2005-2008 Stefano Brivio <[email protected]> * Copyright (c) 2005, 2006 Michael Buesch <[email protected]> * Copyright (c) 2005 Danny van Dyk <[email protected]> * Copyright (c) 2005 Andreas Jaggi <[email protected]> * Copyright (c) 2007 Larry Finger <[email protected]> * * Some parts of the code in this file are derived from the ipw2200 * driver Copyright(c) 2003 - 2004 Intel Corporation. */ #include <linux/delay.h> #include <linux/init.h> #include <linux/module.h> #include <linux/if_arp.h> #include <linux/etherdevice.h> #include <linux/firmware.h> #include <linux/workqueue.h> #include <linux/sched/signal.h> #include <linux/skbuff.h> #include <linux/dma-mapping.h> #include <linux/slab.h> #include <net/dst.h> #include <linux/unaligned.h> #include "b43legacy.h" #include "main.h" #include "debugfs.h" #include "phy.h" #include "dma.h" #include "pio.h" #include "sysfs.h" #include "xmit.h" #include "radio.h" MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_AUTHOR(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …; MODULE_FIRMWARE(…) …; MODULE_FIRMWARE(…) …; #if defined(CONFIG_B43LEGACY_DMA) && defined(CONFIG_B43LEGACY_PIO) static int modparam_pio; module_param_named(pio, modparam_pio, int, 0444); MODULE_PARM_DESC(…) …; #elif defined(CONFIG_B43LEGACY_DMA) #define modparam_pio … #elif defined(CONFIG_B43LEGACY_PIO) #define modparam_pio … #endif static int modparam_bad_frames_preempt; module_param_named(bad_frames_preempt, modparam_bad_frames_preempt, int, 0444); MODULE_PARM_DESC(…) …; static char modparam_fwpostfix[16]; module_param_string(…); MODULE_PARM_DESC(…) …; /* The following table supports BCM4301, BCM4303 and BCM4306/2 devices. */ static const struct ssb_device_id b43legacy_ssb_tbl[] = …; MODULE_DEVICE_TABLE(ssb, b43legacy_ssb_tbl); /* Channel and ratetables are shared for all devices. * They can't be const, because ieee80211 puts some precalculated * data in there. This data is the same for all devices, so we don't * get concurrency issues */ #define RATETAB_ENT(_rateid, _flags) … /* * NOTE: When changing this, sync with xmit.c's * b43legacy_plcp_get_bitrate_idx_* functions! */ static struct ieee80211_rate __b43legacy_ratetable[] = …; #define b43legacy_b_ratetable … #define b43legacy_b_ratetable_size … #define b43legacy_g_ratetable … #define b43legacy_g_ratetable_size … #define CHANTAB_ENT(_chanid, _freq) … static struct ieee80211_channel b43legacy_bg_chantable[] = …; static struct ieee80211_supported_band b43legacy_band_2GHz_BPHY = …; static struct ieee80211_supported_band b43legacy_band_2GHz_GPHY = …; static void b43legacy_wireless_core_exit(struct b43legacy_wldev *dev); static int b43legacy_wireless_core_init(struct b43legacy_wldev *dev); static void b43legacy_wireless_core_stop(struct b43legacy_wldev *dev); static int b43legacy_wireless_core_start(struct b43legacy_wldev *dev); static int b43legacy_ratelimit(struct b43legacy_wl *wl) { … } void b43legacyinfo(struct b43legacy_wl *wl, const char *fmt, ...) { … } void b43legacyerr(struct b43legacy_wl *wl, const char *fmt, ...) { … } void b43legacywarn(struct b43legacy_wl *wl, const char *fmt, ...) { … } #if B43legacy_DEBUG void b43legacydbg(struct b43legacy_wl *wl, const char *fmt, ...) { … } #endif /* DEBUG */ static void b43legacy_ram_write(struct b43legacy_wldev *dev, u16 offset, u32 val) { … } static inline void b43legacy_shm_control_word(struct b43legacy_wldev *dev, u16 routing, u16 offset) { … } u32 b43legacy_shm_read32(struct b43legacy_wldev *dev, u16 routing, u16 offset) { … } u16 b43legacy_shm_read16(struct b43legacy_wldev *dev, u16 routing, u16 offset) { … } void b43legacy_shm_write32(struct b43legacy_wldev *dev, u16 routing, u16 offset, u32 value) { … } void b43legacy_shm_write16(struct b43legacy_wldev *dev, u16 routing, u16 offset, u16 value) { … } /* Read HostFlags */ u32 b43legacy_hf_read(struct b43legacy_wldev *dev) { … } /* Write HostFlags */ void b43legacy_hf_write(struct b43legacy_wldev *dev, u32 value) { … } void b43legacy_tsf_read(struct b43legacy_wldev *dev, u64 *tsf) { … } static void b43legacy_time_lock(struct b43legacy_wldev *dev) { … } static void b43legacy_time_unlock(struct b43legacy_wldev *dev) { … } static void b43legacy_tsf_write_locked(struct b43legacy_wldev *dev, u64 tsf) { … } void b43legacy_tsf_write(struct b43legacy_wldev *dev, u64 tsf) { … } static void b43legacy_macfilter_set(struct b43legacy_wldev *dev, u16 offset, const u8 *mac) { … } static void b43legacy_write_mac_bssid_templates(struct b43legacy_wldev *dev) { … } static void b43legacy_upload_card_macaddress(struct b43legacy_wldev *dev) { … } static void b43legacy_set_slot_time(struct b43legacy_wldev *dev, u16 slot_time) { … } static void b43legacy_short_slot_timing_enable(struct b43legacy_wldev *dev) { … } static void b43legacy_short_slot_timing_disable(struct b43legacy_wldev *dev) { … } /* Synchronize IRQ top- and bottom-half. * IRQs must be masked before calling this. * This must not be called with the irq_lock held. */ static void b43legacy_synchronize_irq(struct b43legacy_wldev *dev) { … } /* DummyTransmission function, as documented on * https://bcm-specs.sipsolutions.net/DummyTransmission */ void b43legacy_dummy_transmission(struct b43legacy_wldev *dev) { … } /* Turn the Analog ON/OFF */ static void b43legacy_switch_analog(struct b43legacy_wldev *dev, int on) { … } void b43legacy_wireless_core_reset(struct b43legacy_wldev *dev, u32 flags) { … } static void handle_irq_transmit_status(struct b43legacy_wldev *dev) { … } static void drain_txstatus_queue(struct b43legacy_wldev *dev) { … } static u32 b43legacy_jssi_read(struct b43legacy_wldev *dev) { … } static void b43legacy_jssi_write(struct b43legacy_wldev *dev, u32 jssi) { … } static void b43legacy_generate_noise_sample(struct b43legacy_wldev *dev) { … } static void b43legacy_calculate_link_quality(struct b43legacy_wldev *dev) { … } static void handle_irq_noise(struct b43legacy_wldev *dev) { … } static void handle_irq_tbtt_indication(struct b43legacy_wldev *dev) { … } static void handle_irq_atim_end(struct b43legacy_wldev *dev) { … } static void handle_irq_pmq(struct b43legacy_wldev *dev) { … } static void b43legacy_write_template_common(struct b43legacy_wldev *dev, const u8 *data, u16 size, u16 ram_offset, u16 shm_size_offset, u8 rate) { … } /* Convert a b43legacy antenna number value to the PHY TX control value. */ static u16 b43legacy_antenna_to_phyctl(int antenna) { … } static void b43legacy_write_beacon_template(struct b43legacy_wldev *dev, u16 ram_offset, u16 shm_size_offset) { … } static void b43legacy_write_probe_resp_plcp(struct b43legacy_wldev *dev, u16 shm_offset, u16 size, struct ieee80211_rate *rate) { … } /* Instead of using custom probe response template, this function * just patches custom beacon template by: * 1) Changing packet type * 2) Patching duration field * 3) Stripping TIM */ static const u8 *b43legacy_generate_probe_resp(struct b43legacy_wldev *dev, u16 *dest_size, struct ieee80211_rate *rate) { … } static void b43legacy_write_probe_resp_template(struct b43legacy_wldev *dev, u16 ram_offset, u16 shm_size_offset, struct ieee80211_rate *rate) { … } static void b43legacy_upload_beacon0(struct b43legacy_wldev *dev) { … } static void b43legacy_upload_beacon1(struct b43legacy_wldev *dev) { … } static void handle_irq_beacon(struct b43legacy_wldev *dev) { … } static void b43legacy_beacon_update_trigger_work(struct work_struct *work) { … } /* Asynchronously update the packet templates in template RAM. * Locking: Requires wl->irq_lock to be locked. */ static void b43legacy_update_templates(struct b43legacy_wl *wl) { … } static void b43legacy_set_beacon_int(struct b43legacy_wldev *dev, u16 beacon_int) { … } static void handle_irq_ucode_debug(struct b43legacy_wldev *dev) { … } /* Interrupt handler bottom-half */ static void b43legacy_interrupt_tasklet(struct tasklet_struct *t) { … } static void pio_irq_workaround(struct b43legacy_wldev *dev, u16 base, int queueidx) { … } static void b43legacy_interrupt_ack(struct b43legacy_wldev *dev, u32 reason) { … } /* Interrupt handler top-half */ static irqreturn_t b43legacy_interrupt_handler(int irq, void *dev_id) { … } static void b43legacy_release_firmware(struct b43legacy_wldev *dev) { … } static void b43legacy_print_fw_helptext(struct b43legacy_wl *wl) { … } static void b43legacy_fw_cb(const struct firmware *firmware, void *context) { … } static int do_request_fw(struct b43legacy_wldev *dev, const char *name, const struct firmware **fw, bool async) { … } static int b43legacy_one_core_attach(struct ssb_device *dev, struct b43legacy_wl *wl); static void b43legacy_one_core_detach(struct ssb_device *dev); static void b43legacy_request_firmware(struct work_struct *work) { … } static int b43legacy_upload_microcode(struct b43legacy_wldev *dev) { … } static int b43legacy_write_initvals(struct b43legacy_wldev *dev, const struct b43legacy_iv *ivals, size_t count, size_t array_size) { … } static int b43legacy_upload_initvals(struct b43legacy_wldev *dev) { … } /* Initialize the GPIOs * https://bcm-specs.sipsolutions.net/GPIO */ static int b43legacy_gpio_init(struct b43legacy_wldev *dev) { … } /* Turn off all GPIO stuff. Call this on module unload, for example. */ static void b43legacy_gpio_cleanup(struct b43legacy_wldev *dev) { … } /* http://bcm-specs.sipsolutions.net/EnableMac */ void b43legacy_mac_enable(struct b43legacy_wldev *dev) { … } /* https://bcm-specs.sipsolutions.net/SuspendMAC */ void b43legacy_mac_suspend(struct b43legacy_wldev *dev) { … } static void b43legacy_adjust_opmode(struct b43legacy_wldev *dev) { … } static void b43legacy_rate_memory_write(struct b43legacy_wldev *dev, u16 rate, int is_ofdm) { … } static void b43legacy_rate_memory_init(struct b43legacy_wldev *dev) { … } /* Set the TX-Antenna for management frames sent by firmware. */ static void b43legacy_mgmtframe_txantenna(struct b43legacy_wldev *dev, int antenna) { … } /* This is the opposite of b43legacy_chip_init() */ static void b43legacy_chip_exit(struct b43legacy_wldev *dev) { … } /* Initialize the chip * https://bcm-specs.sipsolutions.net/ChipInit */ static int b43legacy_chip_init(struct b43legacy_wldev *dev) { … } static void b43legacy_periodic_every120sec(struct b43legacy_wldev *dev) { … } static void b43legacy_periodic_every60sec(struct b43legacy_wldev *dev) { … } static void b43legacy_periodic_every30sec(struct b43legacy_wldev *dev) { … } static void b43legacy_periodic_every15sec(struct b43legacy_wldev *dev) { … } static void do_periodic_work(struct b43legacy_wldev *dev) { … } /* Periodic work locking policy: * The whole periodic work handler is protected by * wl->mutex. If another lock is needed somewhere in the * pwork callchain, it's acquired in-place, where it's needed. */ static void b43legacy_periodic_work_handler(struct work_struct *work) { … } static void b43legacy_periodic_tasks_setup(struct b43legacy_wldev *dev) { … } /* Validate access to the chip (SHM) */ static int b43legacy_validate_chipaccess(struct b43legacy_wldev *dev) { … } static void b43legacy_security_init(struct b43legacy_wldev *dev) { … } #ifdef CONFIG_B43LEGACY_HWRNG static int b43legacy_rng_read(struct hwrng *rng, u32 *data) { … } #endif static void b43legacy_rng_exit(struct b43legacy_wl *wl) { … } static int b43legacy_rng_init(struct b43legacy_wl *wl) { … } static void b43legacy_tx_work(struct work_struct *work) { … } static void b43legacy_op_tx(struct ieee80211_hw *hw, struct ieee80211_tx_control *control, struct sk_buff *skb) { … } static int b43legacy_op_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, unsigned int link_id, u16 queue, const struct ieee80211_tx_queue_params *params) { … } static int b43legacy_op_get_stats(struct ieee80211_hw *hw, struct ieee80211_low_level_stats *stats) { … } static const char *phymode_to_string(unsigned int phymode) { … } static int find_wldev_for_phymode(struct b43legacy_wl *wl, unsigned int phymode, struct b43legacy_wldev **dev, bool *gmode) { … } static void b43legacy_put_phy_into_reset(struct b43legacy_wldev *dev) { … } /* Expects wl->mutex locked */ static int b43legacy_switch_phymode(struct b43legacy_wl *wl, unsigned int new_mode) { … } /* Write the short and long frame retry limit values. */ static void b43legacy_set_retry_limits(struct b43legacy_wldev *dev, unsigned int short_retry, unsigned int long_retry) { … } static int b43legacy_op_dev_config(struct ieee80211_hw *hw, u32 changed) { … } static void b43legacy_update_basic_rates(struct b43legacy_wldev *dev, u32 brates) { … } static void b43legacy_op_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_bss_conf *conf, u64 changed) { … } static void b43legacy_op_configure_filter(struct ieee80211_hw *hw, unsigned int changed, unsigned int *fflags,u64 multicast) { … } /* Locking: wl->mutex */ static void b43legacy_wireless_core_stop(struct b43legacy_wldev *dev) { … } /* Locking: wl->mutex */ static int b43legacy_wireless_core_start(struct b43legacy_wldev *dev) { … } /* Get PHY and RADIO versioning numbers */ static int b43legacy_phy_versioning(struct b43legacy_wldev *dev) { … } static void setup_struct_phy_for_init(struct b43legacy_wldev *dev, struct b43legacy_phy *phy) { … } static void setup_struct_wldev_for_init(struct b43legacy_wldev *dev) { … } static void b43legacy_set_synth_pu_delay(struct b43legacy_wldev *dev, bool idle) { … } /* Set the TSF CFP pre-TargetBeaconTransmissionTime. */ static void b43legacy_set_pretbtt(struct b43legacy_wldev *dev) { … } /* Shutdown a wireless core */ /* Locking: wl->mutex */ static void b43legacy_wireless_core_exit(struct b43legacy_wldev *dev) { … } static void prepare_phy_data_for_init(struct b43legacy_wldev *dev) { … } /* Initialize a wireless core */ static int b43legacy_wireless_core_init(struct b43legacy_wldev *dev) { … } static int b43legacy_op_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) { … } static void b43legacy_op_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) { … } static int b43legacy_op_start(struct ieee80211_hw *hw) { … } static void b43legacy_op_stop(struct ieee80211_hw *hw, bool suspend) { … } static int b43legacy_op_beacon_set_tim(struct ieee80211_hw *hw, struct ieee80211_sta *sta, bool set) { … } static int b43legacy_op_get_survey(struct ieee80211_hw *hw, int idx, struct survey_info *survey) { … } static const struct ieee80211_ops b43legacy_hw_ops = …; /* Hard-reset the chip. Do not call this directly. * Use b43legacy_controller_restart() */ static void b43legacy_chip_reset(struct work_struct *work) { … } static int b43legacy_setup_modes(struct b43legacy_wldev *dev, int have_bphy, int have_gphy) { … } static void b43legacy_wireless_core_detach(struct b43legacy_wldev *dev) { … } static int b43legacy_wireless_core_attach(struct b43legacy_wldev *dev) { … } static void b43legacy_one_core_detach(struct ssb_device *dev) { … } static int b43legacy_one_core_attach(struct ssb_device *dev, struct b43legacy_wl *wl) { … } static void b43legacy_sprom_fixup(struct ssb_bus *bus) { … } static void b43legacy_wireless_exit(struct ssb_device *dev, struct b43legacy_wl *wl) { … } static int b43legacy_wireless_init(struct ssb_device *dev) { … } static int b43legacy_probe(struct ssb_device *dev, const struct ssb_device_id *id) { … } static void b43legacy_remove(struct ssb_device *dev) { … } /* Perform a hardware reset. This can be called from any context. */ void b43legacy_controller_restart(struct b43legacy_wldev *dev, const char *reason) { … } #ifdef CONFIG_PM static int b43legacy_suspend(struct ssb_device *dev, pm_message_t state) { … } static int b43legacy_resume(struct ssb_device *dev) { … } #else /* CONFIG_PM */ #define b43legacy_suspend … #define b43legacy_resume … #endif /* CONFIG_PM */ static struct ssb_driver b43legacy_ssb_driver = …; static void b43legacy_print_driverinfo(void) { … } static int __init b43legacy_init(void) { … } static void __exit b43legacy_exit(void) { … } module_init(…) … module_exit(…)
Codebase Browser
linux