From 5871e4926054ae8678e8893e48f7a7568aa3d9e6 Mon Sep 17 00:00:00 2001 From: Roland Vossen Date: Thu, 1 Sep 2011 11:16:57 +0200 Subject: [PATCH] staging: brcm80211: removed static function declarations in mac80211_if.c Reported-by: Johannes Berg Signed-off-by: Roland Vossen Signed-off-by: Greg Kroah-Hartman --- drivers/staging/brcm80211/brcmsmac/mac80211_if.c | 1116 ++++++++++------------ 1 file changed, 526 insertions(+), 590 deletions(-) diff --git a/drivers/staging/brcm80211/brcmsmac/mac80211_if.c b/drivers/staging/brcm80211/brcmsmac/mac80211_if.c index 01829db..bd989737 100644 --- a/drivers/staging/brcm80211/brcmsmac/mac80211_if.c +++ b/drivers/staging/brcm80211/brcmsmac/mac80211_if.c @@ -37,6 +37,9 @@ #define LOCK(wl) spin_lock_bh(&(wl)->lock) #define UNLOCK(wl) spin_unlock_bh(&(wl)->lock) +#define HW_TO_WL(hw) (hw->priv) +#define WL_TO_HW(wl) (wl->pub->ieee_hw) + /* locking from inside brcms_isr */ #define ISR_LOCK(wl, flags)\ do {\ @@ -54,13 +57,6 @@ #define INT_LOCK(wl, flags) spin_lock_irqsave(&(wl)->isr_lock, flags) #define INT_UNLOCK(wl, flags) spin_unlock_irqrestore(&(wl)->isr_lock, flags) -static void brcms_timer(unsigned long data); -static void _brcms_timer(struct brcms_timer *t); - - -static int ieee_hw_init(struct ieee80211_hw *hw); -static int ieee_hw_rate_init(struct ieee80211_hw *hw); - /* Flags we support */ #define MAC_FILTERS (FIF_PROMISC_IN_BSS | \ FIF_ALLMULTI | \ @@ -70,21 +66,42 @@ static int ieee_hw_rate_init(struct ieee80211_hw *hw); FIF_OTHER_BSS | \ FIF_BCN_PRBRESP_PROMISC) -static int n_adapters_found; +#define CHAN2GHZ(channel, freqency, chflags) { \ + .band = IEEE80211_BAND_2GHZ, \ + .center_freq = (freqency), \ + .hw_value = (channel), \ + .flags = chflags, \ + .max_antenna_gain = 0, \ + .max_power = 19, \ +} + +#define CHAN5GHZ(channel, chflags) { \ + .band = IEEE80211_BAND_5GHZ, \ + .center_freq = 5000 + 5*(channel), \ + .hw_value = (channel), \ + .flags = chflags, \ + .max_antenna_gain = 0, \ + .max_power = 21, \ +} -static int brcms_request_fw(struct brcms_info *wl, struct pci_dev *pdev); -static void brcms_release_fw(struct brcms_info *wl); +#define RATE(rate100m, _flags) { \ + .bitrate = (rate100m), \ + .flags = (_flags), \ + .hw_value = (rate100m / 5), \ +} + +struct firmware_hdr { + u32 offset; + u32 len; + u32 idx; +}; -/* local prototypes */ -static void brcms_dpc(unsigned long data); -static irqreturn_t brcms_isr(int irq, void *dev_id); +char *brcms_firmwares[MAX_FW_IMAGES] = { + "brcm/bcm43xx", + NULL +}; -static int __devinit brcms_pci_probe(struct pci_dev *pdev, - const struct pci_device_id *ent); -static void brcms_remove(struct pci_dev *pdev); -static void brcms_free(struct brcms_info *wl); -static void brcms_set_basic_rate(struct brcm_rateset *rs, u16 rate, - bool is_br); +static int n_adapters_found; MODULE_AUTHOR("Broadcom Corporation"); MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN driver."); @@ -107,50 +124,170 @@ static int msglevel = 0xdeadbeef; module_param(msglevel, int, 0); #endif /* BCMDBG */ -#define HW_TO_WL(hw) (hw->priv) -#define WL_TO_HW(wl) (wl->pub->ieee_hw) +static struct ieee80211_channel brcms_2ghz_chantable[] = { + CHAN2GHZ(1, 2412, IEEE80211_CHAN_NO_HT40MINUS), + CHAN2GHZ(2, 2417, IEEE80211_CHAN_NO_HT40MINUS), + CHAN2GHZ(3, 2422, IEEE80211_CHAN_NO_HT40MINUS), + CHAN2GHZ(4, 2427, IEEE80211_CHAN_NO_HT40MINUS), + CHAN2GHZ(5, 2432, 0), + CHAN2GHZ(6, 2437, 0), + CHAN2GHZ(7, 2442, 0), + CHAN2GHZ(8, 2447, IEEE80211_CHAN_NO_HT40PLUS), + CHAN2GHZ(9, 2452, IEEE80211_CHAN_NO_HT40PLUS), + CHAN2GHZ(10, 2457, IEEE80211_CHAN_NO_HT40PLUS), + CHAN2GHZ(11, 2462, IEEE80211_CHAN_NO_HT40PLUS), + CHAN2GHZ(12, 2467, + IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS | + IEEE80211_CHAN_NO_HT40PLUS), + CHAN2GHZ(13, 2472, + IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS | + IEEE80211_CHAN_NO_HT40PLUS), + CHAN2GHZ(14, 2484, + IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS | + IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS) +}; + +static struct ieee80211_channel brcms_5ghz_nphy_chantable[] = { + /* UNII-1 */ + CHAN5GHZ(36, IEEE80211_CHAN_NO_HT40MINUS), + CHAN5GHZ(40, IEEE80211_CHAN_NO_HT40PLUS), + CHAN5GHZ(44, IEEE80211_CHAN_NO_HT40MINUS), + CHAN5GHZ(48, IEEE80211_CHAN_NO_HT40PLUS), + /* UNII-2 */ + CHAN5GHZ(52, + IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | + IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS), + CHAN5GHZ(56, + IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | + IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS), + CHAN5GHZ(60, + IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | + IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS), + CHAN5GHZ(64, + IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | + IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS), + /* MID */ + CHAN5GHZ(100, + IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | + IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS), + CHAN5GHZ(104, + IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | + IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS), + CHAN5GHZ(108, + IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | + IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS), + CHAN5GHZ(112, + IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | + IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS), + CHAN5GHZ(116, + IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | + IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS), + CHAN5GHZ(120, + IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | + IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS), + CHAN5GHZ(124, + IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | + IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS), + CHAN5GHZ(128, + IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | + IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS), + CHAN5GHZ(132, + IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | + IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS), + CHAN5GHZ(136, + IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | + IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS), + CHAN5GHZ(140, + IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | + IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS | + IEEE80211_CHAN_NO_HT40MINUS), + /* UNII-3 */ + CHAN5GHZ(149, IEEE80211_CHAN_NO_HT40MINUS), + CHAN5GHZ(153, IEEE80211_CHAN_NO_HT40PLUS), + CHAN5GHZ(157, IEEE80211_CHAN_NO_HT40MINUS), + CHAN5GHZ(161, IEEE80211_CHAN_NO_HT40PLUS), + CHAN5GHZ(165, IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS) +}; + +/* + * The rate table is used for both 2.4G and 5G rates. The + * latter being a subset as it does not support CCK rates. + */ +static struct ieee80211_rate legacy_ratetable[] = { + RATE(10, 0), + RATE(20, IEEE80211_RATE_SHORT_PREAMBLE), + RATE(55, IEEE80211_RATE_SHORT_PREAMBLE), + RATE(110, IEEE80211_RATE_SHORT_PREAMBLE), + RATE(60, 0), + RATE(90, 0), + RATE(120, 0), + RATE(180, 0), + RATE(240, 0), + RATE(360, 0), + RATE(480, 0), + RATE(540, 0), +}; + +static struct ieee80211_supported_band brcms_band_2GHz_nphy = { + .band = IEEE80211_BAND_2GHZ, + .channels = brcms_2ghz_chantable, + .n_channels = ARRAY_SIZE(brcms_2ghz_chantable), + .bitrates = legacy_ratetable, + .n_bitrates = ARRAY_SIZE(legacy_ratetable), + .ht_cap = { + /* from include/linux/ieee80211.h */ + .cap = IEEE80211_HT_CAP_GRN_FLD | + IEEE80211_HT_CAP_SGI_20 | + IEEE80211_HT_CAP_SGI_40 | IEEE80211_HT_CAP_40MHZ_INTOLERANT, + .ht_supported = true, + .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K, + .ampdu_density = AMPDU_DEF_MPDU_DENSITY, + .mcs = { + /* placeholders for now */ + .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0}, + .rx_highest = 500, + .tx_params = IEEE80211_HT_MCS_TX_DEFINED} + } +}; + +static struct ieee80211_supported_band brcms_band_5GHz_nphy = { + .band = IEEE80211_BAND_5GHZ, + .channels = brcms_5ghz_nphy_chantable, + .n_channels = ARRAY_SIZE(brcms_5ghz_nphy_chantable), + .bitrates = legacy_ratetable + BRCMS_LEGACY_5G_RATE_OFFSET, + .n_bitrates = ARRAY_SIZE(legacy_ratetable) - + BRCMS_LEGACY_5G_RATE_OFFSET, + .ht_cap = { + .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 | + IEEE80211_HT_CAP_SGI_40 | + IEEE80211_HT_CAP_40MHZ_INTOLERANT, /* No 40 mhz yet */ + .ht_supported = true, + .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K, + .ampdu_density = AMPDU_DEF_MPDU_DENSITY, + .mcs = { + /* placeholders for now */ + .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0}, + .rx_highest = 500, + .tx_params = IEEE80211_HT_MCS_TX_DEFINED} + } +}; + +/* flags the given rate in rateset as requested */ +static void brcms_set_basic_rate(struct brcm_rateset *rs, u16 rate, bool is_br) +{ + u32 i; + + for (i = 0; i < rs->count; i++) { + if (rate != (rs->rates[i] & 0x7f)) + continue; -/* MAC80211 callback functions */ -static int brcms_ops_start(struct ieee80211_hw *hw); -static void brcms_ops_stop(struct ieee80211_hw *hw); -static int brcms_ops_add_interface(struct ieee80211_hw *hw, - struct ieee80211_vif *vif); -static void brcms_ops_remove_interface(struct ieee80211_hw *hw, - struct ieee80211_vif *vif); -static int brcms_ops_config(struct ieee80211_hw *hw, u32 changed); -static void brcms_ops_bss_info_changed(struct ieee80211_hw *hw, - struct ieee80211_vif *vif, - struct ieee80211_bss_conf *info, - u32 changed); -static void brcms_ops_configure_filter(struct ieee80211_hw *hw, - unsigned int changed_flags, - unsigned int *total_flags, u64 multicast); -static int brcms_ops_set_tim(struct ieee80211_hw *hw, struct ieee80211_sta *sta, - bool set); -static void brcms_ops_sw_scan_start(struct ieee80211_hw *hw); -static void brcms_ops_sw_scan_complete(struct ieee80211_hw *hw); -static void brcms_ops_set_tsf(struct ieee80211_hw *hw, u64 tsf); -static int brcms_ops_get_stats(struct ieee80211_hw *hw, - struct ieee80211_low_level_stats *stats); -static void brcms_ops_sta_notify(struct ieee80211_hw *hw, - struct ieee80211_vif *vif, - enum sta_notify_cmd cmd, - struct ieee80211_sta *sta); -static int brcms_ops_conf_tx(struct ieee80211_hw *hw, u16 queue, - const struct ieee80211_tx_queue_params *params); -static u64 brcms_ops_get_tsf(struct ieee80211_hw *hw); -static int brcms_ops_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif, - struct ieee80211_sta *sta); -static int brcms_ops_sta_remove(struct ieee80211_hw *hw, - struct ieee80211_vif *vif, - struct ieee80211_sta *sta); -static int brcms_ops_ampdu_action(struct ieee80211_hw *hw, - struct ieee80211_vif *vif, - enum ieee80211_ampdu_mlme_action action, - struct ieee80211_sta *sta, u16 tid, u16 *ssn, - u8 buf_size); -static void brcms_ops_rfkill_poll(struct ieee80211_hw *hw); -static void brcms_ops_flush(struct ieee80211_hw *hw, bool drop); + if (is_br) + rs->rates[i] |= BRCMS_RATE_FLAG; + else + rs->rates[i] &= BRCMS_RATE_MASK; + return; + } +} static void brcms_ops_tx(struct ieee80211_hw *hw, struct sk_buff *skb) { @@ -735,297 +872,218 @@ static int brcms_set_hint(struct brcms_info *wl, char *abbrev) return regulatory_hint(wl->pub->ieee_hw->wiphy, abbrev); } -/** - * attach to the WL device. - * - * Attach to the WL device identified by vendor and device parameters. - * regs is a host accessible memory address pointing to WL device registers. - * - * brcms_attach is not defined as static because in the case where no bus - * is defined, wl_attach will never be called, and thus, gcc will issue - * a warning that this function is defined but not used if we declare - * it as static. - * - * - * is called in brcms_pci_probe() context, therefore no locking required. - */ -static struct brcms_info *brcms_attach(u16 vendor, u16 device, - resource_size_t regs, - struct pci_dev *btparam, uint irq) +static void brcms_dpc(unsigned long data) { - struct brcms_info *wl = NULL; - int unit, err; - struct ieee80211_hw *hw; - u8 perm[ETH_ALEN]; + struct brcms_info *wl; - unit = n_adapters_found; - err = 0; + wl = (struct brcms_info *) data; - if (unit < 0) - return NULL; + LOCK(wl); - /* allocate private info */ - hw = pci_get_drvdata(btparam); /* btparam == pdev */ - if (hw != NULL) - wl = hw->priv; - if (WARN_ON(hw == NULL) || WARN_ON(wl == NULL)) - return NULL; - wl->wiphy = hw->wiphy; + /* call the common second level interrupt handler */ + if (wl->pub->up) { + if (wl->resched) { + unsigned long flags; - atomic_set(&wl->callbacks, 0); + INT_LOCK(wl, flags); + brcms_c_intrsupd(wl->wlc); + INT_UNLOCK(wl, flags); + } - /* setup the bottom half handler */ - tasklet_init(&wl->tasklet, brcms_dpc, (unsigned long) wl); + wl->resched = brcms_c_dpc(wl->wlc, true); + } - wl->regsva = ioremap_nocache(regs, PCI_BAR0_WINSZ); - if (wl->regsva == NULL) { - wiphy_err(wl->wiphy, "wl%d: ioremap() failed\n", unit); - goto fail; - } - spin_lock_init(&wl->lock); - spin_lock_init(&wl->isr_lock); + /* brcms_c_dpc() may bring the driver down */ + if (!wl->pub->up) + goto done; - /* prepare ucode */ - if (brcms_request_fw(wl, btparam) < 0) { - wiphy_err(wl->wiphy, "%s: Failed to find firmware usually in " - "%s\n", KBUILD_MODNAME, "/lib/firmware/brcm"); - brcms_release_fw(wl); - brcms_remove(btparam); - return NULL; - } + /* re-schedule dpc */ + if (wl->resched) + tasklet_schedule(&wl->tasklet); + else + /* re-enable interrupts */ + brcms_intrson(wl); - /* common load-time initialization */ - wl->wlc = brcms_c_attach(wl, vendor, device, unit, false, - wl->regsva, btparam, &err); - brcms_release_fw(wl); - if (!wl->wlc) { - wiphy_err(wl->wiphy, "%s: attach() failed with code %d\n", - KBUILD_MODNAME, err); - goto fail; - } - wl->pub = brcms_c_pub(wl->wlc); + done: + UNLOCK(wl); +} - wl->pub->ieee_hw = hw; +/* + * Precondition: Since this function is called in brcms_pci_probe() context, + * no locking is required. + */ +static int brcms_request_fw(struct brcms_info *wl, struct pci_dev *pdev) +{ + int status; + struct device *device = &pdev->dev; + char fw_name[100]; + int i; - if (brcms_c_set_par(wl->wlc, IOV_MPC, 0) < 0) - wiphy_err(wl->wiphy, "wl%d: Error setting MPC variable to 0\n", - unit); + memset(&wl->fw, 0, sizeof(struct brcms_firmware)); + for (i = 0; i < MAX_FW_IMAGES; i++) { + if (brcms_firmwares[i] == NULL) + break; + sprintf(fw_name, "%s-%d.fw", brcms_firmwares[i], + UCODE_LOADER_API_VER); + status = request_firmware(&wl->fw.fw_bin[i], fw_name, device); + if (status) { + wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n", + KBUILD_MODNAME, fw_name); + return status; + } + sprintf(fw_name, "%s_hdr-%d.fw", brcms_firmwares[i], + UCODE_LOADER_API_VER); + status = request_firmware(&wl->fw.fw_hdr[i], fw_name, device); + if (status) { + wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n", + KBUILD_MODNAME, fw_name); + return status; + } + wl->fw.hdr_num_entries[i] = + wl->fw.fw_hdr[i]->size / (sizeof(struct firmware_hdr)); + } + wl->fw.fw_cnt = i; + return brcms_ucode_data_init(wl); +} - /* register our interrupt handler */ - if (request_irq(irq, brcms_isr, IRQF_SHARED, KBUILD_MODNAME, wl)) { - wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit); - goto fail; +/* + * Precondition: Since this function is called in brcms_pci_probe() context, + * no locking is required. + */ +static void brcms_release_fw(struct brcms_info *wl) +{ + int i; + for (i = 0; i < MAX_FW_IMAGES; i++) { + release_firmware(wl->fw.fw_bin[i]); + release_firmware(wl->fw.fw_hdr[i]); } - wl->irq = irq; +} - /* register module */ - brcms_c_module_register(wl->pub, "linux", wl, NULL); +/** + * This function frees the WL per-device resources. + * + * This function frees resources owned by the WL device pointed to + * by the wl parameter. + * + * precondition: can both be called locked and unlocked + * + */ +static void brcms_free(struct brcms_info *wl) +{ + struct brcms_timer *t, *next; - if (ieee_hw_init(hw)) { - wiphy_err(wl->wiphy, "wl%d: %s: ieee_hw_init failed!\n", unit, - __func__); - goto fail; - } + /* free ucode data */ + if (wl->fw.fw_cnt) + brcms_ucode_data_free(); + if (wl->irq) + free_irq(wl->irq, wl); - memcpy(perm, &wl->pub->cur_etheraddr, ETH_ALEN); - if (WARN_ON(!is_valid_ether_addr(perm))) - goto fail; - SET_IEEE80211_PERM_ADDR(hw, perm); + /* kill dpc */ + tasklet_kill(&wl->tasklet); - err = ieee80211_register_hw(hw); - if (err) - wiphy_err(wl->wiphy, "%s: ieee80211_register_hw failed, status" - "%d\n", __func__, err); + if (wl->pub) + brcms_c_module_unregister(wl->pub, "linux", wl); - if (wl->pub->srom_ccode[0]) - err = brcms_set_hint(wl, wl->pub->srom_ccode); - else - err = brcms_set_hint(wl, "US"); - if (err) - wiphy_err(wl->wiphy, "%s: regulatory_hint failed, status %d\n", - __func__, err); + /* free common resources */ + if (wl->wlc) { + brcms_c_detach(wl->wlc); + wl->wlc = NULL; + wl->pub = NULL; + } - n_adapters_found++; - return wl; + /* virtual interface deletion is deferred so we cannot spinwait */ -fail: - brcms_free(wl); - return NULL; -} + /* wait for all pending callbacks to complete */ + while (atomic_read(&wl->callbacks) > 0) + schedule(); + /* free timers */ + for (t = wl->timers; t; t = next) { + next = t->next; +#ifdef BCMDBG + kfree(t->name); +#endif + kfree(t); + } + /* + * unregister_netdev() calls get_stats() which may read chip + * registers so we cannot unmap the chip registers until + * after calling unregister_netdev() . + */ + if (wl->regsva) + iounmap((void *)wl->regsva); -#define CHAN2GHZ(channel, freqency, chflags) { \ - .band = IEEE80211_BAND_2GHZ, \ - .center_freq = (freqency), \ - .hw_value = (channel), \ - .flags = chflags, \ - .max_antenna_gain = 0, \ - .max_power = 19, \ + wl->regsva = NULL; } -static struct ieee80211_channel brcms_2ghz_chantable[] = { - CHAN2GHZ(1, 2412, IEEE80211_CHAN_NO_HT40MINUS), - CHAN2GHZ(2, 2417, IEEE80211_CHAN_NO_HT40MINUS), - CHAN2GHZ(3, 2422, IEEE80211_CHAN_NO_HT40MINUS), - CHAN2GHZ(4, 2427, IEEE80211_CHAN_NO_HT40MINUS), - CHAN2GHZ(5, 2432, 0), - CHAN2GHZ(6, 2437, 0), - CHAN2GHZ(7, 2442, 0), - CHAN2GHZ(8, 2447, IEEE80211_CHAN_NO_HT40PLUS), - CHAN2GHZ(9, 2452, IEEE80211_CHAN_NO_HT40PLUS), - CHAN2GHZ(10, 2457, IEEE80211_CHAN_NO_HT40PLUS), - CHAN2GHZ(11, 2462, IEEE80211_CHAN_NO_HT40PLUS), - CHAN2GHZ(12, 2467, - IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS | - IEEE80211_CHAN_NO_HT40PLUS), - CHAN2GHZ(13, 2472, - IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS | - IEEE80211_CHAN_NO_HT40PLUS), - CHAN2GHZ(14, 2484, - IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS | - IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS) -}; +/* +* called from both kernel as from this kernel module. +* precondition: perimeter lock is not acquired. +*/ +static void brcms_remove(struct pci_dev *pdev) +{ + struct brcms_info *wl; + struct ieee80211_hw *hw; + int status; -#define CHAN5GHZ(channel, chflags) { \ - .band = IEEE80211_BAND_5GHZ, \ - .center_freq = 5000 + 5*(channel), \ - .hw_value = (channel), \ - .flags = chflags, \ - .max_antenna_gain = 0, \ - .max_power = 21, \ -} + hw = pci_get_drvdata(pdev); + wl = HW_TO_WL(hw); + if (!wl) { + pr_err("wl: brcms_remove: pci_get_drvdata failed\n"); + return; + } -static struct ieee80211_channel brcms_5ghz_nphy_chantable[] = { - /* UNII-1 */ - CHAN5GHZ(36, IEEE80211_CHAN_NO_HT40MINUS), - CHAN5GHZ(40, IEEE80211_CHAN_NO_HT40PLUS), - CHAN5GHZ(44, IEEE80211_CHAN_NO_HT40MINUS), - CHAN5GHZ(48, IEEE80211_CHAN_NO_HT40PLUS), - /* UNII-2 */ - CHAN5GHZ(52, - IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | - IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS), - CHAN5GHZ(56, - IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | - IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS), - CHAN5GHZ(60, - IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | - IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS), - CHAN5GHZ(64, - IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | - IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS), - /* MID */ - CHAN5GHZ(100, - IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | - IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS), - CHAN5GHZ(104, - IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | - IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS), - CHAN5GHZ(108, - IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | - IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS), - CHAN5GHZ(112, - IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | - IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS), - CHAN5GHZ(116, - IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | - IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS), - CHAN5GHZ(120, - IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | - IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS), - CHAN5GHZ(124, - IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | - IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS), - CHAN5GHZ(128, - IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | - IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS), - CHAN5GHZ(132, - IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | - IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS), - CHAN5GHZ(136, - IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | - IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS), - CHAN5GHZ(140, - IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | - IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS | - IEEE80211_CHAN_NO_HT40MINUS), - /* UNII-3 */ - CHAN5GHZ(149, IEEE80211_CHAN_NO_HT40MINUS), - CHAN5GHZ(153, IEEE80211_CHAN_NO_HT40PLUS), - CHAN5GHZ(157, IEEE80211_CHAN_NO_HT40MINUS), - CHAN5GHZ(161, IEEE80211_CHAN_NO_HT40PLUS), - CHAN5GHZ(165, IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS) -}; + LOCK(wl); + status = brcms_c_chipmatch(pdev->vendor, pdev->device); + UNLOCK(wl); + if (!status) { + wiphy_err(wl->wiphy, "wl: brcms_remove: chipmatch " + "failed\n"); + return; + } + if (wl->wlc) { + wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, false); + wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy); + ieee80211_unregister_hw(hw); + LOCK(wl); + brcms_down(wl); + UNLOCK(wl); + } + pci_disable_device(pdev); -#define RATE(rate100m, _flags) { \ - .bitrate = (rate100m), \ - .flags = (_flags), \ - .hw_value = (rate100m / 5), \ + brcms_free(wl); + + pci_set_drvdata(pdev, NULL); + ieee80211_free_hw(hw); } -/* - * The rate table is used for both 2.4G and 5G rates. The - * latter being a subset as it does not support CCK rates. - */ -static struct ieee80211_rate legacy_ratetable[] = { - RATE(10, 0), - RATE(20, IEEE80211_RATE_SHORT_PREAMBLE), - RATE(55, IEEE80211_RATE_SHORT_PREAMBLE), - RATE(110, IEEE80211_RATE_SHORT_PREAMBLE), - RATE(60, 0), - RATE(90, 0), - RATE(120, 0), - RATE(180, 0), - RATE(240, 0), - RATE(360, 0), - RATE(480, 0), - RATE(540, 0), -}; +static irqreturn_t brcms_isr(int irq, void *dev_id) +{ + struct brcms_info *wl; + bool ours, wantdpc; + unsigned long flags; -static struct ieee80211_supported_band brcms_band_2GHz_nphy = { - .band = IEEE80211_BAND_2GHZ, - .channels = brcms_2ghz_chantable, - .n_channels = ARRAY_SIZE(brcms_2ghz_chantable), - .bitrates = legacy_ratetable, - .n_bitrates = ARRAY_SIZE(legacy_ratetable), - .ht_cap = { - /* from include/linux/ieee80211.h */ - .cap = IEEE80211_HT_CAP_GRN_FLD | - IEEE80211_HT_CAP_SGI_20 | - IEEE80211_HT_CAP_SGI_40 | IEEE80211_HT_CAP_40MHZ_INTOLERANT, - .ht_supported = true, - .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K, - .ampdu_density = AMPDU_DEF_MPDU_DENSITY, - .mcs = { - /* placeholders for now */ - .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0}, - .rx_highest = 500, - .tx_params = IEEE80211_HT_MCS_TX_DEFINED} - } -}; + wl = (struct brcms_info *) dev_id; -static struct ieee80211_supported_band brcms_band_5GHz_nphy = { - .band = IEEE80211_BAND_5GHZ, - .channels = brcms_5ghz_nphy_chantable, - .n_channels = ARRAY_SIZE(brcms_5ghz_nphy_chantable), - .bitrates = legacy_ratetable + BRCMS_LEGACY_5G_RATE_OFFSET, - .n_bitrates = ARRAY_SIZE(legacy_ratetable) - - BRCMS_LEGACY_5G_RATE_OFFSET, - .ht_cap = { - .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 | - IEEE80211_HT_CAP_SGI_40 | - IEEE80211_HT_CAP_40MHZ_INTOLERANT, /* No 40 mhz yet */ - .ht_supported = true, - .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K, - .ampdu_density = AMPDU_DEF_MPDU_DENSITY, - .mcs = { - /* placeholders for now */ - .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0}, - .rx_highest = 500, - .tx_params = IEEE80211_HT_MCS_TX_DEFINED} - } -}; + ISR_LOCK(wl, flags); + + /* call common first level interrupt handler */ + ours = brcms_c_isr(wl->wlc, &wantdpc); + if (ours) { + /* if more to do... */ + if (wantdpc) { + + /* ...and call the second level interrupt handler */ + /* schedule dpc */ + tasklet_schedule(&wl->tasklet); + } + } + + ISR_UNLOCK(wl, flags); + + return IRQ_RETVAL(ours); +} /* * is called in brcms_pci_probe() context, therefore no locking required. @@ -1092,6 +1150,126 @@ static int ieee_hw_init(struct ieee80211_hw *hw) } /** + * attach to the WL device. + * + * Attach to the WL device identified by vendor and device parameters. + * regs is a host accessible memory address pointing to WL device registers. + * + * brcms_attach is not defined as static because in the case where no bus + * is defined, wl_attach will never be called, and thus, gcc will issue + * a warning that this function is defined but not used if we declare + * it as static. + * + * + * is called in brcms_pci_probe() context, therefore no locking required. + */ +static struct brcms_info *brcms_attach(u16 vendor, u16 device, + resource_size_t regs, + struct pci_dev *btparam, uint irq) +{ + struct brcms_info *wl = NULL; + int unit, err; + struct ieee80211_hw *hw; + u8 perm[ETH_ALEN]; + + unit = n_adapters_found; + err = 0; + + if (unit < 0) + return NULL; + + /* allocate private info */ + hw = pci_get_drvdata(btparam); /* btparam == pdev */ + if (hw != NULL) + wl = hw->priv; + if (WARN_ON(hw == NULL) || WARN_ON(wl == NULL)) + return NULL; + wl->wiphy = hw->wiphy; + + atomic_set(&wl->callbacks, 0); + + /* setup the bottom half handler */ + tasklet_init(&wl->tasklet, brcms_dpc, (unsigned long) wl); + + wl->regsva = ioremap_nocache(regs, PCI_BAR0_WINSZ); + if (wl->regsva == NULL) { + wiphy_err(wl->wiphy, "wl%d: ioremap() failed\n", unit); + goto fail; + } + spin_lock_init(&wl->lock); + spin_lock_init(&wl->isr_lock); + + /* prepare ucode */ + if (brcms_request_fw(wl, btparam) < 0) { + wiphy_err(wl->wiphy, "%s: Failed to find firmware usually in " + "%s\n", KBUILD_MODNAME, "/lib/firmware/brcm"); + brcms_release_fw(wl); + brcms_remove(btparam); + return NULL; + } + + /* common load-time initialization */ + wl->wlc = brcms_c_attach(wl, vendor, device, unit, false, + wl->regsva, btparam, &err); + brcms_release_fw(wl); + if (!wl->wlc) { + wiphy_err(wl->wiphy, "%s: attach() failed with code %d\n", + KBUILD_MODNAME, err); + goto fail; + } + wl->pub = brcms_c_pub(wl->wlc); + + wl->pub->ieee_hw = hw; + + if (brcms_c_set_par(wl->wlc, IOV_MPC, 0) < 0) + wiphy_err(wl->wiphy, "wl%d: Error setting MPC variable to 0\n", + unit); + + /* register our interrupt handler */ + if (request_irq(irq, brcms_isr, IRQF_SHARED, KBUILD_MODNAME, wl)) { + wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit); + goto fail; + } + wl->irq = irq; + + /* register module */ + brcms_c_module_register(wl->pub, "linux", wl, NULL); + + if (ieee_hw_init(hw)) { + wiphy_err(wl->wiphy, "wl%d: %s: ieee_hw_init failed!\n", unit, + __func__); + goto fail; + } + + memcpy(perm, &wl->pub->cur_etheraddr, ETH_ALEN); + if (WARN_ON(!is_valid_ether_addr(perm))) + goto fail; + SET_IEEE80211_PERM_ADDR(hw, perm); + + err = ieee80211_register_hw(hw); + if (err) + wiphy_err(wl->wiphy, "%s: ieee80211_register_hw failed, status" + "%d\n", __func__, err); + + if (wl->pub->srom_ccode[0]) + err = brcms_set_hint(wl, wl->pub->srom_ccode); + else + err = brcms_set_hint(wl, "US"); + if (err) + wiphy_err(wl->wiphy, "%s: regulatory_hint failed, status %d\n", + __func__, err); + + n_adapters_found++; + return wl; + +fail: + brcms_free(wl); + return NULL; +} + + + +/** * determines if a device is a WL device, and if so, attaches it. * * This function determines if a device pointed to by pdev is a WL device, @@ -1193,68 +1371,27 @@ static int brcms_resume(struct pci_dev *pdev) return -ENODEV; } - err = pci_set_power_state(pdev, PCI_D0); - if (err) - return err; - - pci_restore_state(pdev); - - err = pci_enable_device(pdev); - if (err) - return err; - - pci_set_master(pdev); - - pci_read_config_dword(pdev, 0x40, &val); - if ((val & 0x0000ff00) != 0) - pci_write_config_dword(pdev, 0x40, val & 0xffff00ff); - - /* - * done. driver will be put in up state - * in brcms_ops_add_interface() call. - */ - return err; -} - -/* -* called from both kernel as from this kernel module. -* precondition: perimeter lock is not acquired. -*/ -static void brcms_remove(struct pci_dev *pdev) -{ - struct brcms_info *wl; - struct ieee80211_hw *hw; - int status; - - hw = pci_get_drvdata(pdev); - wl = HW_TO_WL(hw); - if (!wl) { - pr_err("wl: brcms_remove: pci_get_drvdata failed\n"); - return; - } - - LOCK(wl); - status = brcms_c_chipmatch(pdev->vendor, pdev->device); - UNLOCK(wl); - if (!status) { - wiphy_err(wl->wiphy, "wl: brcms_remove: chipmatch " - "failed\n"); - return; - } - if (wl->wlc) { - wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, false); - wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy); - ieee80211_unregister_hw(hw); - LOCK(wl); - brcms_down(wl); - UNLOCK(wl); - } - pci_disable_device(pdev); + err = pci_set_power_state(pdev, PCI_D0); + if (err) + return err; - brcms_free(wl); + pci_restore_state(pdev); - pci_set_drvdata(pdev, NULL); - ieee80211_free_hw(hw); + err = pci_enable_device(pdev); + if (err) + return err; + + pci_set_master(pdev); + + pci_read_config_dword(pdev, 0x40, &val); + if ((val & 0x0000ff00) != 0) + pci_write_config_dword(pdev, 0x40, val & 0xffff00ff); + + /* + * done. driver will be put in up state + * in brcms_ops_add_interface() call. + */ + return err; } static struct pci_driver brcms_pci_driver = { @@ -1307,81 +1444,6 @@ static void __exit brcms_module_exit(void) module_init(brcms_module_init); module_exit(brcms_module_exit); -/** - * This function frees the WL per-device resources. - * - * This function frees resources owned by the WL device pointed to - * by the wl parameter. - * - * precondition: can both be called locked and unlocked - * - */ -static void brcms_free(struct brcms_info *wl) -{ - struct brcms_timer *t, *next; - - /* free ucode data */ - if (wl->fw.fw_cnt) - brcms_ucode_data_free(); - if (wl->irq) - free_irq(wl->irq, wl); - - /* kill dpc */ - tasklet_kill(&wl->tasklet); - - if (wl->pub) - brcms_c_module_unregister(wl->pub, "linux", wl); - - /* free common resources */ - if (wl->wlc) { - brcms_c_detach(wl->wlc); - wl->wlc = NULL; - wl->pub = NULL; - } - - /* virtual interface deletion is deferred so we cannot spinwait */ - - /* wait for all pending callbacks to complete */ - while (atomic_read(&wl->callbacks) > 0) - schedule(); - - /* free timers */ - for (t = wl->timers; t; t = next) { - next = t->next; -#ifdef BCMDBG - kfree(t->name); -#endif - kfree(t); - } - - /* - * unregister_netdev() calls get_stats() which may read chip - * registers so we cannot unmap the chip registers until - * after calling unregister_netdev() . - */ - if (wl->regsva) - iounmap((void *)wl->regsva); - - wl->regsva = NULL; -} - -/* flags the given rate in rateset as requested */ -static void brcms_set_basic_rate(struct brcm_rateset *rs, u16 rate, bool is_br) -{ - u32 i; - - for (i = 0; i < rs->count; i++) { - if (rate != (rs->rates[i] & 0x7f)) - continue; - - if (is_br) - rs->rates[i] |= BRCMS_RATE_FLAG; - else - rs->rates[i] &= BRCMS_RATE_MASK; - return; - } -} - /* * precondition: perimeter lock has been acquired */ @@ -1486,77 +1548,6 @@ void brcms_down(struct brcms_info *wl) LOCK(wl); } -static irqreturn_t brcms_isr(int irq, void *dev_id) -{ - struct brcms_info *wl; - bool ours, wantdpc; - unsigned long flags; - - wl = (struct brcms_info *) dev_id; - - ISR_LOCK(wl, flags); - - /* call common first level interrupt handler */ - ours = brcms_c_isr(wl->wlc, &wantdpc); - if (ours) { - /* if more to do... */ - if (wantdpc) { - - /* ...and call the second level interrupt handler */ - /* schedule dpc */ - tasklet_schedule(&wl->tasklet); - } - } - - ISR_UNLOCK(wl, flags); - - return IRQ_RETVAL(ours); -} - -static void brcms_dpc(unsigned long data) -{ - struct brcms_info *wl; - - wl = (struct brcms_info *) data; - - LOCK(wl); - - /* call the common second level interrupt handler */ - if (wl->pub->up) { - if (wl->resched) { - unsigned long flags; - - INT_LOCK(wl, flags); - brcms_c_intrsupd(wl->wlc); - INT_UNLOCK(wl, flags); - } - - wl->resched = brcms_c_dpc(wl->wlc, true); - } - - /* brcms_c_dpc() may bring the driver down */ - if (!wl->pub->up) - goto done; - - /* re-schedule dpc */ - if (wl->resched) - tasklet_schedule(&wl->tasklet); - else - /* re-enable interrupts */ - brcms_intrson(wl); - - done: - UNLOCK(wl); -} - -/* - * is called by the kernel from software irq context - */ -static void brcms_timer(unsigned long data) -{ - _brcms_timer((struct brcms_timer *) data); -} - /* * precondition: perimeter lock is not acquired */ @@ -1582,6 +1573,14 @@ static void _brcms_timer(struct brcms_timer *t) } /* + * is called by the kernel from software irq context + */ +static void brcms_timer(unsigned long data) +{ + _brcms_timer((struct brcms_timer *) data); +} + +/* * Adds a timer to the list. Caller supplies a timer function. * Is called from wlc. * @@ -1695,17 +1694,6 @@ void brcms_free_timer(struct brcms_info *wl, struct brcms_timer *t) } -struct firmware_hdr { - u32 offset; - u32 len; - u32 idx; -}; - -char *brcms_firmwares[MAX_FW_IMAGES] = { - "brcm/bcm43xx", - NULL -}; - /* * precondition: perimeter lock has been acquired */ @@ -1771,44 +1759,6 @@ int brcms_ucode_init_uint(struct brcms_info *wl, u32 *data, u32 idx) } /* - * Precondition: Since this function is called in brcms_pci_probe() context, - * no locking is required. - */ -static int brcms_request_fw(struct brcms_info *wl, struct pci_dev *pdev) -{ - int status; - struct device *device = &pdev->dev; - char fw_name[100]; - int i; - - memset(&wl->fw, 0, sizeof(struct brcms_firmware)); - for (i = 0; i < MAX_FW_IMAGES; i++) { - if (brcms_firmwares[i] == NULL) - break; - sprintf(fw_name, "%s-%d.fw", brcms_firmwares[i], - UCODE_LOADER_API_VER); - status = request_firmware(&wl->fw.fw_bin[i], fw_name, device); - if (status) { - wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n", - KBUILD_MODNAME, fw_name); - return status; - } - sprintf(fw_name, "%s_hdr-%d.fw", brcms_firmwares[i], - UCODE_LOADER_API_VER); - status = request_firmware(&wl->fw.fw_hdr[i], fw_name, device); - if (status) { - wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n", - KBUILD_MODNAME, fw_name); - return status; - } - wl->fw.hdr_num_entries[i] = - wl->fw.fw_hdr[i]->size / (sizeof(struct firmware_hdr)); - } - wl->fw.fw_cnt = i; - return brcms_ucode_data_init(wl); -} - -/* * precondition: can both be called locked and unlocked */ void brcms_ucode_free_buf(void *p) @@ -1817,20 +1767,6 @@ void brcms_ucode_free_buf(void *p) } /* - * Precondition: Since this function is called in brcms_pci_probe() context, - * no locking is required. - */ -static void brcms_release_fw(struct brcms_info *wl) -{ - int i; - for (i = 0; i < MAX_FW_IMAGES; i++) { - release_firmware(wl->fw.fw_bin[i]); - release_firmware(wl->fw.fw_hdr[i]); - } -} - - -/* * checks validity of all firmware images loaded from user space * * Precondition: Since this function is called in brcms_pci_probe() context, -- 2.7.4