diff options
Diffstat (limited to 'drivers/net/wireless/zd1211rw')
| -rw-r--r-- | drivers/net/wireless/zd1211rw/zd_chip.c | 38 | ||||
| -rw-r--r-- | drivers/net/wireless/zd1211rw/zd_chip.h | 104 | ||||
| -rw-r--r-- | drivers/net/wireless/zd1211rw/zd_def.h | 1 | ||||
| -rw-r--r-- | drivers/net/wireless/zd1211rw/zd_ieee80211.c | 10 | ||||
| -rw-r--r-- | drivers/net/wireless/zd1211rw/zd_ieee80211.h | 3 | ||||
| -rw-r--r-- | drivers/net/wireless/zd1211rw/zd_mac.c | 404 | ||||
| -rw-r--r-- | drivers/net/wireless/zd1211rw/zd_mac.h | 38 | ||||
| -rw-r--r-- | drivers/net/wireless/zd1211rw/zd_netdev.c | 13 | ||||
| -rw-r--r-- | drivers/net/wireless/zd1211rw/zd_usb.c | 45 | ||||
| -rw-r--r-- | drivers/net/wireless/zd1211rw/zd_usb.h | 14 |
10 files changed, 411 insertions, 259 deletions
diff --git a/drivers/net/wireless/zd1211rw/zd_chip.c b/drivers/net/wireless/zd1211rw/zd_chip.c index aa661b2b76c7..8be99ebbe1cd 100644 --- a/drivers/net/wireless/zd1211rw/zd_chip.c +++ b/drivers/net/wireless/zd1211rw/zd_chip.c @@ -1076,6 +1076,31 @@ static int set_mandatory_rates(struct zd_chip *chip, enum ieee80211_std std) return zd_iowrite32_locked(chip, rates, CR_MANDATORY_RATE_TBL); } +int zd_chip_set_rts_cts_rate_locked(struct zd_chip *chip, + u8 rts_rate, int preamble) +{ + int rts_mod = ZD_RX_CCK; + u32 value = 0; + + /* Modulation bit */ + if (ZD_CS_TYPE(rts_rate) == ZD_CS_OFDM) + rts_mod = ZD_RX_OFDM; + + dev_dbg_f(zd_chip_dev(chip), "rts_rate=%x preamble=%x\n", + rts_rate, preamble); + + value |= rts_rate << RTSCTS_SH_RTS_RATE; + value |= rts_mod << RTSCTS_SH_RTS_MOD_TYPE; + value |= preamble << RTSCTS_SH_RTS_PMB_TYPE; + value |= preamble << RTSCTS_SH_CTS_PMB_TYPE; + + /* We always send 11M self-CTS messages, like the vendor driver. */ + value |= ZD_CCK_RATE_11M << RTSCTS_SH_CTS_RATE; + value |= ZD_RX_CCK << RTSCTS_SH_CTS_MOD_TYPE; + + return zd_iowrite32_locked(chip, value, CR_RTS_CTS_RATE); +} + int zd_chip_enable_hwint(struct zd_chip *chip) { int r; @@ -1355,17 +1380,12 @@ out: return r; } -int zd_chip_set_basic_rates(struct zd_chip *chip, u16 cr_rates) +int zd_chip_set_basic_rates_locked(struct zd_chip *chip, u16 cr_rates) { - int r; - - if (cr_rates & ~(CR_RATES_80211B|CR_RATES_80211G)) - return -EINVAL; + ZD_ASSERT((cr_rates & ~(CR_RATES_80211B | CR_RATES_80211G)) == 0); + dev_dbg_f(zd_chip_dev(chip), "%x\n", cr_rates); - mutex_lock(&chip->mutex); - r = zd_iowrite32_locked(chip, cr_rates, CR_BASIC_RATE_TBL); - mutex_unlock(&chip->mutex); - return r; + return zd_iowrite32_locked(chip, cr_rates, CR_BASIC_RATE_TBL); } static int ofdm_qual_db(u8 status_quality, u8 rate, unsigned int size) diff --git a/drivers/net/wireless/zd1211rw/zd_chip.h b/drivers/net/wireless/zd1211rw/zd_chip.h index ae59597ce4e1..ca892b9a6448 100644 --- a/drivers/net/wireless/zd1211rw/zd_chip.h +++ b/drivers/net/wireless/zd1211rw/zd_chip.h @@ -337,24 +337,24 @@ #define CR_MAC_PS_STATE CTL_REG(0x050C) #define CR_INTERRUPT CTL_REG(0x0510) -#define INT_TX_COMPLETE 0x00000001 -#define INT_RX_COMPLETE 0x00000002 -#define INT_RETRY_FAIL 0x00000004 -#define INT_WAKEUP 0x00000008 -#define INT_DTIM_NOTIFY 0x00000020 -#define INT_CFG_NEXT_BCN 0x00000040 -#define INT_BUS_ABORT 0x00000080 -#define INT_TX_FIFO_READY 0x00000100 -#define INT_UART 0x00000200 -#define INT_TX_COMPLETE_EN 0x00010000 -#define INT_RX_COMPLETE_EN 0x00020000 -#define INT_RETRY_FAIL_EN 0x00040000 -#define INT_WAKEUP_EN 0x00080000 -#define INT_DTIM_NOTIFY_EN 0x00200000 -#define INT_CFG_NEXT_BCN_EN 0x00400000 -#define INT_BUS_ABORT_EN 0x00800000 -#define INT_TX_FIFO_READY_EN 0x01000000 -#define INT_UART_EN 0x02000000 +#define INT_TX_COMPLETE (1 << 0) +#define INT_RX_COMPLETE (1 << 1) +#define INT_RETRY_FAIL (1 << 2) +#define INT_WAKEUP (1 << 3) +#define INT_DTIM_NOTIFY (1 << 5) +#define INT_CFG_NEXT_BCN (1 << 6) +#define INT_BUS_ABORT (1 << 7) +#define INT_TX_FIFO_READY (1 << 8) +#define INT_UART (1 << 9) +#define INT_TX_COMPLETE_EN (1 << 16) +#define INT_RX_COMPLETE_EN (1 << 17) +#define INT_RETRY_FAIL_EN (1 << 18) +#define INT_WAKEUP_EN (1 << 19) +#define INT_DTIM_NOTIFY_EN (1 << 21) +#define INT_CFG_NEXT_BCN_EN (1 << 22) +#define INT_BUS_ABORT_EN (1 << 23) +#define INT_TX_FIFO_READY_EN (1 << 24) +#define INT_UART_EN (1 << 25) #define CR_TSF_LOW_PART CTL_REG(0x0514) #define CR_TSF_HIGH_PART CTL_REG(0x0518) @@ -398,18 +398,18 @@ * device will use a rate in this table that is less than or equal to the rate * of the incoming frame which prompted the response */ #define CR_BASIC_RATE_TBL CTL_REG(0x0630) -#define CR_RATE_1M 0x0001 /* 802.11b */ -#define CR_RATE_2M 0x0002 /* 802.11b */ -#define CR_RATE_5_5M 0x0004 /* 802.11b */ -#define CR_RATE_11M 0x0008 /* 802.11b */ -#define CR_RATE_6M 0x0100 /* 802.11g */ -#define CR_RATE_9M 0x0200 /* 802.11g */ -#define CR_RATE_12M 0x0400 /* 802.11g */ -#define CR_RATE_18M 0x0800 /* 802.11g */ -#define CR_RATE_24M 0x1000 /* 802.11g */ -#define CR_RATE_36M 0x2000 /* 802.11g */ -#define CR_RATE_48M 0x4000 /* 802.11g */ -#define CR_RATE_54M 0x8000 /* 802.11g */ +#define CR_RATE_1M (1 << 0) /* 802.11b */ +#define CR_RATE_2M (1 << 1) /* 802.11b */ +#define CR_RATE_5_5M (1 << 2) /* 802.11b */ +#define CR_RATE_11M (1 << 3) /* 802.11b */ +#define CR_RATE_6M (1 << 8) /* 802.11g */ +#define CR_RATE_9M (1 << 9) /* 802.11g */ +#define CR_RATE_12M (1 << 10) /* 802.11g */ +#define CR_RATE_18M (1 << 11) /* 802.11g */ +#define CR_RATE_24M (1 << 12) /* 802.11g */ +#define CR_RATE_36M (1 << 13) /* 802.11g */ +#define CR_RATE_48M (1 << 14) /* 802.11g */ +#define CR_RATE_54M (1 << 15) /* 802.11g */ #define CR_RATES_80211G 0xff00 #define CR_RATES_80211B 0x000f @@ -420,15 +420,24 @@ #define CR_MANDATORY_RATE_TBL CTL_REG(0x0634) #define CR_RTS_CTS_RATE CTL_REG(0x0638) +/* These are all bit indexes in CR_RTS_CTS_RATE, so remember to shift. */ +#define RTSCTS_SH_RTS_RATE 0 +#define RTSCTS_SH_EXP_CTS_RATE 4 +#define RTSCTS_SH_RTS_MOD_TYPE 8 +#define RTSCTS_SH_RTS_PMB_TYPE 9 +#define RTSCTS_SH_CTS_RATE 16 +#define RTSCTS_SH_CTS_MOD_TYPE 24 +#define RTSCTS_SH_CTS_PMB_TYPE 25 + #define CR_WEP_PROTECT CTL_REG(0x063C) #define CR_RX_THRESHOLD CTL_REG(0x0640) /* register for controlling the LEDS */ #define CR_LED CTL_REG(0x0644) /* masks for controlling LEDs */ -#define LED1 0x0100 -#define LED2 0x0200 -#define LED_SW 0x0400 +#define LED1 (1 << 8) +#define LED2 (1 << 9) +#define LED_SW (1 << 10) /* Seems to indicate that the configuration is over. */ @@ -455,18 +464,18 @@ * registers, so one could argue it is a LOCK bit. But calling it * LOCK_PHY_REGS makes it confusing. */ -#define UNLOCK_PHY_REGS 0x0080 +#define UNLOCK_PHY_REGS (1 << 7) #define CR_DEVICE_STATE CTL_REG(0x0684) #define CR_UNDERRUN_CNT CTL_REG(0x0688) #define CR_RX_FILTER CTL_REG(0x068c) -#define RX_FILTER_ASSOC_RESPONSE 0x0002 -#define RX_FILTER_REASSOC_RESPONSE 0x0008 -#define RX_FILTER_PROBE_RESPONSE 0x0020 -#define RX_FILTER_BEACON 0x0100 -#define RX_FILTER_DISASSOC 0x0400 -#define RX_FILTER_AUTH 0x0800 +#define RX_FILTER_ASSOC_RESPONSE (1 << 1) +#define RX_FILTER_REASSOC_RESPONSE (1 << 3) +#define RX_FILTER_PROBE_RESPONSE (1 << 5) +#define RX_FILTER_BEACON (1 << 8) +#define RX_FILTER_DISASSOC (1 << 10) +#define RX_FILTER_AUTH (1 << 11) #define AP_RX_FILTER 0x0400feff #define STA_RX_FILTER 0x0000ffff @@ -794,6 +803,9 @@ void zd_chip_disable_rx(struct zd_chip *chip); int zd_chip_enable_hwint(struct zd_chip *chip); int zd_chip_disable_hwint(struct zd_chip *chip); +int zd_chip_set_rts_cts_rate_locked(struct zd_chip *chip, + u8 rts_rate, int preamble); + static inline int zd_get_encryption_type(struct zd_chip *chip, u32 *type) { return zd_ioread32(chip, CR_ENCRYPTION_TYPE, type); @@ -809,7 +821,17 @@ static inline int zd_chip_get_basic_rates(struct zd_chip *chip, u16 *cr_rates) return zd_ioread16(chip, CR_BASIC_RATE_TBL, cr_rates); } -int zd_chip_set_basic_rates(struct zd_chip *chip, u16 cr_rates); +int zd_chip_set_basic_rates_locked(struct zd_chip *chip, u16 cr_rates); + +static inline int zd_chip_set_basic_rates(struct zd_chip *chip, u16 cr_rates) +{ + int r; + + mutex_lock(&chip->mutex); + r = zd_chip_set_basic_rates_locked(chip, cr_rates); + mutex_unlock(&chip->mutex); + return r; +} static inline int zd_chip_set_rx_filter(struct zd_chip *chip, u32 filter) { diff --git a/drivers/net/wireless/zd1211rw/zd_def.h b/drivers/net/wireless/zd1211rw/zd_def.h index a13ec72eb304..fb22f62cf1f3 100644 --- a/drivers/net/wireless/zd1211rw/zd_def.h +++ b/drivers/net/wireless/zd1211rw/zd_def.h @@ -39,6 +39,7 @@ do { \ if (!(x)) { \ pr_debug("%s:%d ASSERT %s VIOLATED!\n", \ __FILE__, __LINE__, __stringify(x)); \ + dump_stack(); \ } \ } while (0) #else diff --git a/drivers/net/wireless/zd1211rw/zd_ieee80211.c b/drivers/net/wireless/zd1211rw/zd_ieee80211.c index 66905f7b61ff..189160efd2ae 100644 --- a/drivers/net/wireless/zd1211rw/zd_ieee80211.c +++ b/drivers/net/wireless/zd1211rw/zd_ieee80211.c @@ -37,7 +37,12 @@ static const struct channel_range channel_ranges[] = { [ZD_REGDOMAIN_JAPAN] = { 1, 14}, [ZD_REGDOMAIN_SPAIN] = { 1, 14}, [ZD_REGDOMAIN_FRANCE] = { 1, 14}, - [ZD_REGDOMAIN_JAPAN_ADD] = {14, 15}, + + /* Japan originally only had channel 14 available (see CHNL_ID 0x40 in + * 802.11). However, in 2001 the range was extended to include channels + * 1-13. The ZyDAS devices still use the old region code but are + * designed to allow the extra channel access in Japan. */ + [ZD_REGDOMAIN_JAPAN_ADD] = { 1, 15}, }; const struct channel_range *zd_channel_range(u8 regdomain) @@ -133,9 +138,6 @@ int zd_find_channel(u8 *channel, const struct iw_freq *freq) int i, r; u32 mhz; - if (!(freq->flags & IW_FREQ_FIXED)) - return 0; - if (freq->m < 1000) { if (freq->m > NUM_CHANNELS || freq->m == 0) return -EINVAL; diff --git a/drivers/net/wireless/zd1211rw/zd_ieee80211.h b/drivers/net/wireless/zd1211rw/zd_ieee80211.h index f63245b0d966..26b8298dff8c 100644 --- a/drivers/net/wireless/zd1211rw/zd_ieee80211.h +++ b/drivers/net/wireless/zd1211rw/zd_ieee80211.h @@ -50,6 +50,7 @@ static inline u8 zd_ofdm_plcp_header_rate( return header->prefix[0] & 0xf; } +/* These are referred to as zd_rates */ #define ZD_OFDM_RATE_6M 0xb #define ZD_OFDM_RATE_9M 0xf #define ZD_OFDM_RATE_12M 0xa @@ -64,7 +65,7 @@ struct cck_plcp_header { u8 service; __le16 length; __le16 crc16; -}; +} __attribute__((packed)); static inline u8 zd_cck_plcp_header_rate(const struct cck_plcp_header *header) { diff --git a/drivers/net/wireless/zd1211rw/zd_mac.c b/drivers/net/wireless/zd1211rw/zd_mac.c index 5e4f4b707375..44f3cfd4cc1d 100644 --- a/drivers/net/wireless/zd1211rw/zd_mac.c +++ b/drivers/net/wireless/zd1211rw/zd_mac.c @@ -32,6 +32,8 @@ static void ieee_init(struct ieee80211_device *ieee); static void softmac_init(struct ieee80211softmac_device *sm); +static void set_rts_cts_work(void *d); +static void set_basic_rates_work(void *d); static void housekeeping_init(struct zd_mac *mac); static void housekeeping_enable(struct zd_mac *mac); @@ -46,6 +48,8 @@ int zd_mac_init(struct zd_mac *mac, memset(mac, 0, sizeof(*mac)); spin_lock_init(&mac->lock); mac->netdev = netdev; + INIT_WORK(&mac->set_rts_cts_work, set_rts_cts_work, mac); + INIT_WORK(&mac->set_basic_rates_work, set_basic_rates_work, mac); ieee_init(ieee); softmac_init(ieee80211_priv(netdev)); @@ -213,6 +217,13 @@ int zd_mac_stop(struct net_device *netdev) housekeeping_disable(mac); ieee80211softmac_stop(netdev); + /* Ensure no work items are running or queued from this point */ + cancel_delayed_work(&mac->set_rts_cts_work); + cancel_delayed_work(&mac->set_basic_rates_work); + flush_workqueue(zd_workqueue); + mac->updating_rts_rate = 0; + mac->updating_basic_rates = 0; + zd_chip_disable_hwint(chip); zd_chip_switch_radio_off(chip); zd_chip_disable_int(chip); @@ -286,6 +297,186 @@ u8 zd_mac_get_regdomain(struct zd_mac *mac) return regdomain; } +/* Fallback to lowest rate, if rate is unknown. */ +static u8 rate_to_zd_rate(u8 rate) +{ + switch (rate) { + case IEEE80211_CCK_RATE_2MB: + return ZD_CCK_RATE_2M; + case IEEE80211_CCK_RATE_5MB: + return ZD_CCK_RATE_5_5M; + case IEEE80211_CCK_RATE_11MB: + return ZD_CCK_RATE_11M; + case IEEE80211_OFDM_RATE_6MB: + return ZD_OFDM_RATE_6M; + case IEEE80211_OFDM_RATE_9MB: + return ZD_OFDM_RATE_9M; + case IEEE80211_OFDM_RATE_12MB: + return ZD_OFDM_RATE_12M; + case IEEE80211_OFDM_RATE_18MB: + return ZD_OFDM_RATE_18M; + case IEEE80211_OFDM_RATE_24MB: + return ZD_OFDM_RATE_24M; + case IEEE80211_OFDM_RATE_36MB: + return ZD_OFDM_RATE_36M; + case IEEE80211_OFDM_RATE_48MB: + return ZD_OFDM_RATE_48M; + case IEEE80211_OFDM_RATE_54MB: + return ZD_OFDM_RATE_54M; + } + return ZD_CCK_RATE_1M; +} + +static u16 rate_to_cr_rate(u8 rate) +{ + switch (rate) { + case IEEE80211_CCK_RATE_2MB: + return CR_RATE_1M; + case IEEE80211_CCK_RATE_5MB: + return CR_RATE_5_5M; + case IEEE80211_CCK_RATE_11MB: + return CR_RATE_11M; + case IEEE80211_OFDM_RATE_6MB: + return CR_RATE_6M; + case IEEE80211_OFDM_RATE_9MB: + return CR_RATE_9M; + case IEEE80211_OFDM_RATE_12MB: + return CR_RATE_12M; + case IEEE80211_OFDM_RATE_18MB: + return CR_RATE_18M; + case IEEE80211_OFDM_RATE_24MB: + return CR_RATE_24M; + case IEEE80211_OFDM_RATE_36MB: + return CR_RATE_36M; + case IEEE80211_OFDM_RATE_48MB: + return CR_RATE_48M; + case IEEE80211_OFDM_RATE_54MB: + return CR_RATE_54M; + } + return CR_RATE_1M; +} + +static void try_enable_tx(struct zd_mac *mac) +{ + unsigned long flags; + + spin_lock_irqsave(&mac->lock, flags); + if (mac->updating_rts_rate == 0 && mac->updating_basic_rates == 0) + netif_wake_queue(mac->netdev); + spin_unlock_irqrestore(&mac->lock, flags); +} + +static void set_rts_cts_work(void *d) +{ + struct zd_mac *mac = d; + unsigned long flags; + u8 rts_rate; + unsigned int short_preamble; + + mutex_lock(&mac->chip.mutex); + + spin_lock_irqsave(&mac->lock, flags); + mac->updating_rts_rate = 0; + rts_rate = mac->rts_rate; + short_preamble = mac->short_preamble; + spin_unlock_irqrestore(&mac->lock, flags); + + zd_chip_set_rts_cts_rate_locked(&mac->chip, rts_rate, short_preamble); + mutex_unlock(&mac->chip.mutex); + + try_enable_tx(mac); +} + +static void set_basic_rates_work(void *d) +{ + struct zd_mac *mac = d; + unsigned long flags; + u16 basic_rates; + + mutex_lock(&mac->chip.mutex); + + spin_lock_irqsave(&mac->lock, flags); + mac->updating_basic_rates = 0; + basic_rates = mac->basic_rates; + spin_unlock_irqrestore(&mac->lock, flags); + + zd_chip_set_basic_rates_locked(&mac->chip, basic_rates); + mutex_unlock(&mac->chip.mutex); + + try_enable_tx(mac); +} + +static void bssinfo_change(struct net_device *netdev, u32 changes) +{ + struct zd_mac *mac = zd_netdev_mac(netdev); + struct ieee80211softmac_device *softmac = ieee80211_priv(netdev); + struct ieee80211softmac_bss_info *bssinfo = &softmac->bssinfo; + int need_set_rts_cts = 0; + int need_set_rates = 0; + u16 basic_rates; + unsigned long flags; + + dev_dbg_f(zd_mac_dev(mac), "changes: %x\n", changes); + + if (changes & IEEE80211SOFTMAC_BSSINFOCHG_SHORT_PREAMBLE) { + spin_lock_irqsave(&mac->lock, flags); + mac->short_preamble = bssinfo->short_preamble; + spin_unlock_irqrestore(&mac->lock, flags); + need_set_rts_cts = 1; + } + + if (changes & IEEE80211SOFTMAC_BSSINFOCHG_RATES) { + /* Set RTS rate to highest available basic rate */ + u8 rate = ieee80211softmac_highest_supported_rate(softmac, + &bssinfo->supported_rates, 1); + rate = rate_to_zd_rate(rate); + + spin_lock_irqsave(&mac->lock, flags); + if (rate != mac->rts_rate) { + mac->rts_rate = rate; + need_set_rts_cts = 1; + } + spin_unlock_irqrestore(&mac->lock, flags); + + /* Set basic rates */ + need_set_rates = 1; + if (bssinfo->supported_rates.count == 0) { + /* Allow the device to be flexible */ + basic_rates = CR_RATES_80211B | CR_RATES_80211G; + } else { + int i = 0; + basic_rates = 0; + + for (i = 0; i < bssinfo->supported_rates.count; i++) { + u16 rate = bssinfo->supported_rates.rates[i]; + if ((rate & IEEE80211_BASIC_RATE_MASK) == 0) + continue; + + rate &= ~IEEE80211_BASIC_RATE_MASK; + basic_rates |= rate_to_cr_rate(rate); + } + } + spin_lock_irqsave(&mac->lock, flags); + mac->basic_rates = basic_rates; + spin_unlock_irqrestore(&mac->lock, flags); + } + + /* Schedule any changes we made above */ + + spin_lock_irqsave(&mac->lock, flags); + if (need_set_rts_cts && !mac->updating_rts_rate) { + mac->updating_rts_rate = 1; + netif_stop_queue(mac->netdev); + queue_work(zd_workqueue, &mac->set_rts_cts_work); + } + if (need_set_rates && !mac->updating_basic_rates) { + mac->updating_basic_rates = 1; + netif_stop_queue(mac->netdev); + queue_work(zd_workqueue, &mac->set_basic_rates_work); + } + spin_unlock_irqrestore(&mac->lock, flags); +} + static void set_channel(struct net_device *netdev, u8 channel) { struct zd_mac *mac = zd_netdev_mac(netdev); @@ -295,7 +486,6 @@ static void set_channel(struct net_device *netdev, u8 channel) zd_chip_set_channel(&mac->chip, channel); } -/* TODO: Should not work in Managed mode. */ int zd_mac_request_channel(struct zd_mac *mac, u8 channel) { unsigned long lock_flags; @@ -317,31 +507,22 @@ int zd_mac_request_channel(struct zd_mac *mac, u8 channel) return 0; } -int zd_mac_get_channel(struct zd_mac *mac, u8 *channel, u8 *flags) +u8 zd_mac_get_channel(struct zd_mac *mac) { - struct ieee80211_device *ieee = zd_mac_to_ieee80211(mac); + u8 channel = zd_chip_get_channel(&mac->chip); - *channel = zd_chip_get_channel(&mac->chip); - if (ieee->iw_mode != IW_MODE_INFRA) { - spin_lock_irq(&mac->lock); - *flags = *channel == mac->requested_channel ? - MAC_FIXED_CHANNEL : 0; - spin_unlock(&mac->lock); - } else { - *flags = 0; - } - dev_dbg_f(zd_mac_dev(mac), "channel %u flags %u\n", *channel, *flags); - return 0; + dev_dbg_f(zd_mac_dev(mac), "channel %u\n", channel); + return channel; } /* If wrong rate is given, we are falling back to the slowest rate: 1MBit/s */ -static u8 cs_typed_rate(u8 cs_rate) +static u8 zd_rate_typed(u8 zd_rate) { static const u8 typed_rates[16] = { - [ZD_CS_CCK_RATE_1M] = ZD_CS_CCK|ZD_CS_CCK_RATE_1M, - [ZD_CS_CCK_RATE_2M] = ZD_CS_CCK|ZD_CS_CCK_RATE_2M, - [ZD_CS_CCK_RATE_5_5M] = ZD_CS_CCK|ZD_CS_CCK_RATE_5_5M, - [ZD_CS_CCK_RATE_11M] = ZD_CS_CCK|ZD_CS_CCK_RATE_11M, + [ZD_CCK_RATE_1M] = ZD_CS_CCK|ZD_CCK_RATE_1M, + [ZD_CCK_RATE_2M] = ZD_CS_CCK|ZD_CCK_RATE_2M, + [ZD_CCK_RATE_5_5M] = ZD_CS_CCK|ZD_CCK_RATE_5_5M, + [ZD_CCK_RATE_11M] = ZD_CS_CCK|ZD_CCK_RATE_11M, [ZD_OFDM_RATE_6M] = ZD_CS_OFDM|ZD_OFDM_RATE_6M, [ZD_OFDM_RATE_9M] = ZD_CS_OFDM|ZD_OFDM_RATE_9M, [ZD_OFDM_RATE_12M] = ZD_CS_OFDM|ZD_OFDM_RATE_12M, @@ -353,37 +534,7 @@ static u8 cs_typed_rate(u8 cs_rate) }; ZD_ASSERT(ZD_CS_RATE_MASK == 0x0f); - return typed_rates[cs_rate & ZD_CS_RATE_MASK]; -} - -/* Fallback to lowest rate, if rate is unknown. */ -static u8 rate_to_cs_rate(u8 rate) -{ - switch (rate) { - case IEEE80211_CCK_RATE_2MB: - return ZD_CS_CCK_RATE_2M; - case IEEE80211_CCK_RATE_5MB: - return ZD_CS_CCK_RATE_5_5M; - case IEEE80211_CCK_RATE_11MB: - return ZD_CS_CCK_RATE_11M; - case IEEE80211_OFDM_RATE_6MB: - return ZD_OFDM_RATE_6M; - case IEEE80211_OFDM_RATE_9MB: - return ZD_OFDM_RATE_9M; - case IEEE80211_OFDM_RATE_12MB: - return ZD_OFDM_RATE_12M; - case IEEE80211_OFDM_RATE_18MB: - return ZD_OFDM_RATE_18M; - case IEEE80211_OFDM_RATE_24MB: - return ZD_OFDM_RATE_24M; - case IEEE80211_OFDM_RATE_36MB: - return ZD_OFDM_RATE_36M; - case IEEE80211_OFDM_RATE_48MB: - return ZD_OFDM_RATE_48M; - case IEEE80211_OFDM_RATE_54MB: - return ZD_OFDM_RATE_54M; - } - return ZD_CS_CCK_RATE_1M; + return typed_rates[zd_rate & ZD_CS_RATE_MASK]; } int zd_mac_set_mode(struct zd_mac *mac, u32 mode) @@ -484,13 +635,13 @@ int zd_mac_get_range(struct zd_mac *mac, struct iw_range *range) return 0; } -static int zd_calc_tx_length_us(u8 *service, u8 cs_rate, u16 tx_length) +static int zd_calc_tx_length_us(u8 *service, u8 zd_rate, u16 tx_length) { static const u8 rate_divisor[] = { - [ZD_CS_CCK_RATE_1M] = 1, - [ZD_CS_CCK_RATE_2M] = 2, - [ZD_CS_CCK_RATE_5_5M] = 11, /* bits must be doubled */ - [ZD_CS_CCK_RATE_11M] = 11, + [ZD_CCK_RATE_1M] = 1, + [ZD_CCK_RATE_2M] = 2, + [ZD_CCK_RATE_5_5M] = 11, /* bits must be doubled */ + [ZD_CCK_RATE_11M] = 11, [ZD_OFDM_RATE_6M] = 6, [ZD_OFDM_RATE_9M] = 9, [ZD_OFDM_RATE_12M] = 12, @@ -504,15 +655,15 @@ static int zd_calc_tx_length_us(u8 *service, u8 cs_rate, u16 tx_length) u32 bits = (u32)tx_length * 8; u32 divisor; - divisor = rate_divisor[cs_rate]; + divisor = rate_divisor[zd_rate]; if (divisor == 0) return -EINVAL; - switch (cs_rate) { - case ZD_CS_CCK_RATE_5_5M: + switch (zd_rate) { + case ZD_CCK_RATE_5_5M: bits = (2*bits) + 10; /* round up to the next integer */ break; - case ZD_CS_CCK_RATE_11M: + case ZD_CCK_RATE_11M: if (service) { u32 t = bits % 11; *service &= ~ZD_PLCP_SERVICE_LENGTH_EXTENSION; @@ -532,16 +683,16 @@ enum { R2M_11A = 0x02, }; -static u8 cs_rate_to_modulation(u8 cs_rate, int flags) +static u8 zd_rate_to_modulation(u8 zd_rate, int flags) { u8 modulation; - modulation = cs_typed_rate(cs_rate); + modulation = zd_rate_typed(zd_rate); if (flags & R2M_SHORT_PREAMBLE) { switch (ZD_CS_RATE(modulation)) { - case ZD_CS_CCK_RATE_2M: - case ZD_CS_CCK_RATE_5_5M: - case ZD_CS_CCK_RATE_11M: + case ZD_CCK_RATE_2M: + case ZD_CCK_RATE_5_5M: + case ZD_CCK_RATE_11M: modulation |= ZD_CS_CCK_PREA_SHORT; return modulation; } @@ -558,39 +709,36 @@ static void cs_set_modulation(struct zd_mac *mac, struct zd_ctrlset *cs, { struct ieee80211softmac_device *softmac = ieee80211_priv(mac->netdev); u16 ftype = WLAN_FC_GET_TYPE(le16_to_cpu(hdr->frame_ctl)); - u8 rate, cs_rate; + u8 rate, zd_rate; int is_mgt = (ftype == IEEE80211_FTYPE_MGMT) != 0; + int is_multicast = is_multicast_ether_addr(hdr->addr1); + int short_preamble = ieee80211softmac_short_preamble_ok(softmac, + is_multicast, is_mgt); + int flags = 0; + + /* FIXME: 802.11a? */ + rate = ieee80211softmac_suggest_txrate(softmac, is_multicast, is_mgt); - /* FIXME: 802.11a? short preamble? */ - rate = ieee80211softmac_suggest_txrate(softmac, - is_multicast_ether_addr(hdr->addr1), is_mgt); + if (short_preamble) + flags |= R2M_SHORT_PREAMBLE; - cs_rate = rate_to_cs_rate(rate); - cs->modulation = cs_rate_to_modulation(cs_rate, 0); + zd_rate = rate_to_zd_rate(rate); + cs->modulation = zd_rate_to_modulation(zd_rate, flags); } static void cs_set_control(struct zd_mac *mac, struct zd_ctrlset *cs, struct ieee80211_hdr_4addr *header) { + struct ieee80211softmac_device *softmac = ieee80211_priv(mac->netdev); unsigned int tx_length = le16_to_cpu(cs->tx_length); u16 fctl = le16_to_cpu(header->frame_ctl); u16 ftype = WLAN_FC_GET_TYPE(fctl); u16 stype = WLAN_FC_GET_STYPE(fctl); /* - * CONTROL: - * - start at 0x00 - * - if fragment 0, enable bit 0 + * CONTROL TODO: * - if backoff needed, enable bit 0 * - if burst (backoff not needed) disable bit 0 - * - if multicast, enable bit 1 - * - if PS-POLL frame, enable bit 2 - * - if in INDEPENDENT_BSS mode and zd1205_DestPowerSave, then enable - * bit 4 (FIXME: wtf) - * - if frag_len > RTS threshold, set bit 5 as long if it isnt - * multicast or mgt - * - if bit 5 is set, and we are in OFDM mode, unset bit 5 and set bit - * 7 */ cs->control = 0; @@ -607,17 +755,18 @@ static void cs_set_control(struct zd_mac *mac, struct zd_ctrlset *cs, if (stype == IEEE80211_STYPE_PSPOLL) cs->control |= ZD_CS_PS_POLL_FRAME; + /* Unicast data frames over the threshold should have RTS */ if (!is_multicast_ether_addr(header->addr1) && - ftype != IEEE80211_FTYPE_MGMT && - tx_length > zd_netdev_ieee80211(mac->netdev)->rts) - { - /* FIXME: check the logic */ - if (ZD_CS_TYPE(cs->modulation) == ZD_CS_OFDM) { - /* 802.11g */ - cs->control |= ZD_CS_SELF_CTS; - } else { /* 802.11b */ - cs->control |= ZD_CS_RTS; - } + ftype != IEEE80211_FTYPE_MGMT && + tx_length > zd_netdev_ieee80211(mac->netdev)->rts) + cs->control |= ZD_CS_RTS; + + /* Use CTS-to-self protection if required */ + if (ZD_CS_TYPE(cs->modulation) == ZD_CS_OFDM && + ieee80211softmac_protection_needed(softmac)) { + /* FIXME: avoid sending RTS *and* self-CTS, is that correct? */ + cs->control &= ~ZD_CS_RTS; + cs->control |= ZD_CS_SELF_CTS; } /* FIXME: Management frame? */ @@ -721,7 +870,7 @@ struct zd_rt_hdr { u8 rt_rate; u16 rt_channel; u16 rt_chbitmask; -}; +} __attribute__((packed)); static void fill_rt_header(void *buffer, struct zd_mac *mac, const struct ieee80211_rx_stats *stats, @@ -782,9 +931,11 @@ static int is_data_packet_for_us(struct ieee80211_device *ieee, (netdev->flags & IFF_PROMISC); } -/* Filters receiving packets. If it returns 1 send it to ieee80211_rx, if 0 - * return. If an error is detected -EINVAL is returned. ieee80211_rx_mgt() is - * called here. +/* Filters received packets. The function returns 1 if the packet should be + * forwarded to ieee80211_rx(). If the packet should be ignored the function + * returns 0. If an invalid packet is found the function returns -EINVAL. + * + * The function calls ieee80211_rx_mgt() directly. * * It has been based on ieee80211_rx_any. */ @@ -810,9 +961,9 @@ static int filter_rx(struct ieee80211_device *ieee, ieee80211_rx_mgt(ieee, hdr, stats); return 0; case IEEE80211_FTYPE_CTL: - /* Ignore invalid short buffers */ return 0; case IEEE80211_FTYPE_DATA: + /* Ignore invalid short buffers */ if (length < sizeof(struct ieee80211_hdr_3addr)) return -EINVAL; return is_data_packet_for_us(ieee, hdr); @@ -993,6 +1144,7 @@ static void ieee_init(struct ieee80211_device *ieee) static void softmac_init(struct ieee80211softmac_device *sm) { sm->set_channel = set_channel; + sm->bssinfo_change = bssinfo_change; } struct iw_statistics *zd_mac_get_wireless_stats(struct net_device *ndev) @@ -1028,66 +1180,6 @@ struct iw_statistics *zd_mac_get_wireless_stats(struct net_device *ndev) return iw_stats; } -#ifdef DEBUG -static const char* decryption_types[] = { - [ZD_RX_NO_WEP] = "none", - [ZD_RX_WEP64] = "WEP64", - [ZD_RX_TKIP] = "TKIP", - [ZD_RX_AES] = "AES", - [ZD_RX_WEP128] = "WEP128", - [ZD_RX_WEP256] = "WEP256", -}; - -static const char *decryption_type_string(u8 type) -{ - const char *s; - - if (type < ARRAY_SIZE(decryption_types)) { - s = decryption_types[type]; - } else { - s = NULL; - } - return s ? s : "unknown"; -} - -static int is_ofdm(u8 frame_status) -{ - return (frame_status & ZD_RX_OFDM); -} - -void zd_dump_rx_status(const struct rx_status *status) -{ - const char* modulation; - u8 quality; - - if (is_ofdm(status->frame_status)) { - modulation = "ofdm"; - quality = status->signal_quality_ofdm; - } else { - modulation = "cck"; - quality = status->signal_quality_cck; - } - pr_debug("rx status %s strength %#04x qual %#04x decryption %s\n", - modulation, status->signal_strength, quality, - decryption_type_string(status->decryption_type)); - if (status->frame_status & ZD_RX_ERROR) { - pr_debug("rx error %s%s%s%s%s%s\n", - (status->frame_status & ZD_RX_TIMEOUT_ERROR) ? - "timeout " : "", - (status->frame_status & ZD_RX_FIFO_OVERRUN_ERROR) ? - "fifo " : "", - (status->frame_status & ZD_RX_DECRYPTION_ERROR) ? - "decryption " : "", - (status->frame_status & ZD_RX_CRC32_ERROR) ? - "crc32 " : "", - (status->frame_status & ZD_RX_NO_ADDR1_MATCH_ERROR) ? - "addr1 " : "", - (status->frame_status & ZD_RX_CRC16_ERROR) ? - "crc16" : ""); - } -} -#endif /* DEBUG */ - #define LINK_LED_WORK_DELAY HZ static void link_led_handler(struct work_struct *work) diff --git a/drivers/net/wireless/zd1211rw/zd_mac.h b/drivers/net/wireless/zd1211rw/zd_mac.h index 7957cac3de25..08d6b8c08e75 100644 --- a/drivers/net/wireless/zd1211rw/zd_mac.h +++ b/drivers/net/wireless/zd1211rw/zd_mac.h @@ -20,6 +20,7 @@ #include <linux/wireless.h> #include <linux/kernel.h> +#include <linux/workqueue.h> #include <net/ieee80211.h> #include <net/ieee80211softmac.h> @@ -48,10 +49,11 @@ struct zd_ctrlset { #define ZD_CS_CCK 0x00 #define ZD_CS_OFDM 0x10 -#define ZD_CS_CCK_RATE_1M 0x00 -#define ZD_CS_CCK_RATE_2M 0x01 -#define ZD_CS_CCK_RATE_5_5M 0x02 -#define ZD_CS_CCK_RATE_11M 0x03 +/* These are referred to as zd_rates */ +#define ZD_CCK_RATE_1M 0x00 +#define ZD_CCK_RATE_2M 0x01 +#define ZD_CCK_RATE_5_5M 0x02 +#define ZD_CCK_RATE_11M 0x03 /* The rates for OFDM are encoded as in the PLCP header. Use ZD_OFDM_RATE_*. */ @@ -82,7 +84,7 @@ struct zd_ctrlset { struct rx_length_info { __le16 length[3]; __le16 tag; -}; +} __attribute__((packed)); #define RX_LENGTH_INFO_TAG 0x697e @@ -93,7 +95,7 @@ struct rx_status { u8 signal_quality_ofdm; u8 decryption_type; u8 frame_status; -}; +} __attribute__((packed)); /* rx_status field decryption_type */ #define ZD_RX_NO_WEP 0 @@ -116,10 +118,6 @@ struct rx_status { #define ZD_RX_CRC16_ERROR 0x40 #define ZD_RX_ERROR 0x80 -enum mac_flags { - MAC_FIXED_CHANNEL = 0x01, -}; - struct housekeeping { struct delayed_work link_led_work; }; @@ -130,15 +128,33 @@ struct zd_mac { struct zd_chip chip; spinlock_t lock; struct net_device *netdev; + /* Unlocked reading possible */ struct iw_statistics iw_stats; + struct housekeeping housekeeping; + struct work_struct set_rts_cts_work; + struct work_struct set_basic_rates_work; + unsigned int stats_count; u8 qual_buffer[ZD_MAC_STATS_BUFFER_SIZE]; u8 rssi_buffer[ZD_MAC_STATS_BUFFER_SIZE]; u8 regdomain; u8 default_regdomain; u8 requested_channel; + + /* A bitpattern of cr_rates */ + u16 basic_rates; + + /* A zd_rate */ + u8 rts_rate; + + /* Short preamble (used for RTS/CTS) */ + unsigned int short_preamble:1; + + /* flags to indicate update in progress */ + unsigned int updating_rts_rate:1; + unsigned int updating_basic_rates:1; }; static inline struct ieee80211_device *zd_mac_to_ieee80211(struct zd_mac *mac) @@ -180,7 +196,7 @@ int zd_mac_set_regdomain(struct zd_mac *zd_mac, u8 regdomain); u8 zd_mac_get_regdomain(struct zd_mac *zd_mac); int zd_mac_request_channel(struct zd_mac *mac, u8 channel); -int zd_mac_get_channel(struct zd_mac *mac, u8 *channel, u8 *flags); +u8 zd_mac_get_channel(struct zd_mac *mac); int zd_mac_set_mode(struct zd_mac *mac, u32 mode); int zd_mac_get_mode(struct zd_mac *mac, u32 *mode); diff --git a/drivers/net/wireless/zd1211rw/zd_netdev.c b/drivers/net/wireless/zd1211rw/zd_netdev.c index af3a7b36d078..60f1b0f6d45b 100644 --- a/drivers/net/wireless/zd1211rw/zd_netdev.c +++ b/drivers/net/wireless/zd1211rw/zd_netdev.c @@ -107,21 +107,10 @@ static int iw_get_freq(struct net_device *netdev, struct iw_request_info *info, union iwreq_data *req, char *extra) { - int r; struct zd_mac *mac = zd_netdev_mac(netdev); struct iw_freq *freq = &req->freq; - u8 channel; - u8 flags; - - r = zd_mac_get_channel(mac, &channel, &flags); - if (r) - return r; - freq->flags = (flags & MAC_FIXED_CHANNEL) ? - IW_FREQ_FIXED : IW_FREQ_AUTO; - dev_dbg_f(zd_mac_dev(mac), "channel %s\n", - (flags & MAC_FIXED_CHANNEL) ? "fixed" : "auto"); - return zd_channel_to_freq(freq, channel); + return zd_channel_to_freq(freq, zd_mac_get_channel(mac)); } static int iw_set_mode(struct net_device *netdev, diff --git a/drivers/net/wireless/zd1211rw/zd_usb.c b/drivers/net/wireless/zd1211rw/zd_usb.c index 3faaeb2b7c89..aa782e88754b 100644 --- a/drivers/net/wireless/zd1211rw/zd_usb.c +++ b/drivers/net/wireless/zd1211rw/zd_usb.c @@ -47,11 +47,17 @@ static struct usb_device_id usb_ids[] = { { USB_DEVICE(0x0586, 0x3402), .driver_info = DEVICE_ZD1211 }, { USB_DEVICE(0x0b3b, 0x5630), .driver_info = DEVICE_ZD1211 }, { USB_DEVICE(0x0b05, 0x170c), .driver_info = DEVICE_ZD1211 }, + { USB_DEVICE(0x1435, 0x0711), .driver_info = DEVICE_ZD1211 }, + { USB_DEVICE(0x0586, 0x3409), .driver_info = DEVICE_ZD1211 }, + { USB_DEVICE(0x0b3b, 0x1630), .driver_info = DEVICE_ZD1211 }, + { USB_DEVICE(0x0586, 0x3401), .driver_info = DEVICE_ZD1211 }, + { USB_DEVICE(0x14ea, 0xab13), .driver_info = DEVICE_ZD1211 }, /* ZD1211B */ { USB_DEVICE(0x0ace, 0x1215), .driver_info = DEVICE_ZD1211B }, { USB_DEVICE(0x157e, 0x300d), .driver_info = DEVICE_ZD1211B }, { USB_DEVICE(0x079b, 0x0062), .driver_info = DEVICE_ZD1211B }, { USB_DEVICE(0x1582, 0x6003), .driver_info = DEVICE_ZD1211B }, + { USB_DEVICE(0x050d, 0x705c), .driver_info = DEVICE_ZD1211B }, /* "Driverless" devices that need ejecting */ { USB_DEVICE(0x0ace, 0x2011), .driver_info = DEVICE_INSTALLER }, {} @@ -366,15 +372,6 @@ error: return r; } -static void disable_read_regs_int(struct zd_usb *usb) -{ - struct zd_usb_interrupt *intr = &usb->intr; - - spin_lock(&intr->lock); - intr->read_regs_enabled = 0; - spin_unlock(&intr->lock); -} - #define urb_dev(urb) (&(urb)->dev->dev) static inline void handle_regs_int(struct urb *urb) @@ -596,6 +593,8 @@ static void handle_rx_packet(struct zd_usb *usb, const u8 *buffer, unsigned int l, k, n; for (i = 0, l = 0;; i++) { k = le16_to_cpu(get_unaligned(&length_info->length[i])); + if (k == 0) + return; n = l+k; if (n > length) return; @@ -1119,27 +1118,28 @@ static int __init usb_init(void) { int r; - pr_debug("usb_init()\n"); + pr_debug("%s usb_init()\n", driver.name); zd_workqueue = create_singlethread_workqueue(driver.name); if (zd_workqueue == NULL) { - printk(KERN_ERR "%s: couldn't create workqueue\n", driver.name); + printk(KERN_ERR "%s couldn't create workqueue\n", driver.name); return -ENOMEM; } r = usb_register(&driver); if (r) { - printk(KERN_ERR "usb_register() failed. Error number %d\n", r); + printk(KERN_ERR "%s usb_register() failed. Error number %d\n", + driver.name, r); return r; } - pr_debug("zd1211rw initialized\n"); + pr_debug("%s initialized\n", driver.name); return 0; } static void __exit usb_exit(void) { - pr_debug("usb_exit()\n"); + pr_debug("%s usb_exit()\n", driver.name); usb_deregister(&driver); destroy_workqueue(zd_workqueue); } @@ -1156,10 +1156,19 @@ static void prepare_read_regs_int(struct zd_usb *usb) { struct zd_usb_interrupt *intr = &usb->intr; - spin_lock(&intr->lock); + spin_lock_irq(&intr->lock); intr->read_regs_enabled = 1; INIT_COMPLETION(intr->read_regs.completion); - spin_unlock(&intr->lock); + spin_unlock_irq(&intr->lock); +} + +static void disable_read_regs_int(struct zd_usb *usb) +{ + struct zd_usb_interrupt *intr = &usb->intr; + + spin_lock_irq(&intr->lock); + intr->read_regs_enabled = 0; + spin_unlock_irq(&intr->lock); } static int get_results(struct zd_usb *usb, u16 *values, @@ -1171,7 +1180,7 @@ static int get_results(struct zd_usb *usb, u16 *values, struct read_regs_int *rr = &intr->read_regs; struct usb_int_regs *regs = (struct usb_int_regs *)rr->buffer; - spin_lock(&intr->lock); + spin_lock_irq(&intr->lock); r = -EIO; /* The created block size seems to be larger than expected. @@ -1204,7 +1213,7 @@ static int get_results(struct zd_usb *usb, u16 *values, r = 0; error_unlock: - spin_unlock(&intr->lock); + spin_unlock_irq(&intr->lock); return r; } diff --git a/drivers/net/wireless/zd1211rw/zd_usb.h b/drivers/net/wireless/zd1211rw/zd_usb.h index e81a2d3cfffd..317d37c36679 100644 --- a/drivers/net/wireless/zd1211rw/zd_usb.h +++ b/drivers/net/wireless/zd1211rw/zd_usb.h @@ -74,17 +74,17 @@ enum control_requests { struct usb_req_read_regs { __le16 id; __le16 addr[0]; -}; +} __attribute__((packed)); struct reg_data { __le16 addr; __le16 value; -}; +} __attribute__((packed)); struct usb_req_write_regs { __le16 id; struct reg_data reg_writes[0]; -}; +} __attribute__((packed)); enum { RF_IF_LE = 0x02, @@ -101,7 +101,7 @@ struct usb_req_rfwrite { /* RF2595: 24 */ __le16 bit_values[0]; /* (CR203 & ~(RF_IF_LE | RF_CLK | RF_DATA)) | (bit ? RF_DATA : 0) */ -}; +} __attribute__((packed)); /* USB interrupt */ @@ -118,12 +118,12 @@ enum usb_int_flags { struct usb_int_header { u8 type; /* must always be 1 */ u8 id; -}; +} __attribute__((packed)); struct usb_int_regs { struct usb_int_header hdr; struct reg_data regs[0]; -}; +} __attribute__((packed)); struct usb_int_retry_fail { struct usb_int_header hdr; @@ -131,7 +131,7 @@ struct usb_int_retry_fail { u8 _dummy; u8 addr[ETH_ALEN]; u8 ibss_wakeup_dest; -}; +} __attribute__((packed)); struct read_regs_int { struct completion completion; |