diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/wireless/rt2x00/Kconfig | 3 | ||||
| -rw-r--r-- | drivers/net/wireless/rt2x00/Makefile | 1 | ||||
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2x00.h | 11 | ||||
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2x00config.c | 5 | ||||
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2x00dev.c | 92 | ||||
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2x00ht.c | 69 | ||||
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2x00lib.h | 24 | ||||
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2x00queue.c | 1 | ||||
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2x00queue.h | 39 |
9 files changed, 211 insertions, 34 deletions
diff --git a/drivers/net/wireless/rt2x00/Kconfig b/drivers/net/wireless/rt2x00/Kconfig index bfc5d9cf716..4338c93d5b6 100644 --- a/drivers/net/wireless/rt2x00/Kconfig +++ b/drivers/net/wireless/rt2x00/Kconfig @@ -88,6 +88,9 @@ config RT2X00_LIB_USB config RT2X00_LIB tristate +config RT2X00_LIB_HT + boolean + config RT2X00_LIB_FIRMWARE boolean select FW_LOADER diff --git a/drivers/net/wireless/rt2x00/Makefile b/drivers/net/wireless/rt2x00/Makefile index f22d808d8c5..776ec2b8c4e 100644 --- a/drivers/net/wireless/rt2x00/Makefile +++ b/drivers/net/wireless/rt2x00/Makefile @@ -8,6 +8,7 @@ rt2x00lib-$(CONFIG_RT2X00_LIB_CRYPTO) += rt2x00crypto.o rt2x00lib-$(CONFIG_RT2X00_LIB_RFKILL) += rt2x00rfkill.o rt2x00lib-$(CONFIG_RT2X00_LIB_FIRMWARE) += rt2x00firmware.o rt2x00lib-$(CONFIG_RT2X00_LIB_LEDS) += rt2x00leds.o +rt2x00lib-$(CONFIG_RT2X00_LIB_HT) += rt2x00ht.o obj-$(CONFIG_RT2X00_LIB) += rt2x00lib.o obj-$(CONFIG_RT2X00_LIB_PCI) += rt2x00pci.o diff --git a/drivers/net/wireless/rt2x00/rt2x00.h b/drivers/net/wireless/rt2x00/rt2x00.h index 7c5cbb192a6..ebe5f276679 100644 --- a/drivers/net/wireless/rt2x00/rt2x00.h +++ b/drivers/net/wireless/rt2x00/rt2x00.h @@ -366,6 +366,7 @@ static inline struct rt2x00_intf* vif_to_intf(struct ieee80211_vif *vif) * for @tx_power_a, @tx_power_bg and @channels. * @channels: Device/chipset specific channel values (See &struct rf_channel). * @channels_info: Additional information for channels (See &struct channel_info). + * @ht: Driver HT Capabilities (See &ieee80211_sta_ht_cap). */ struct hw_mode_spec { unsigned int supported_bands; @@ -379,6 +380,8 @@ struct hw_mode_spec { unsigned int num_channels; const struct rf_channel *channels; const struct channel_info *channels_info; + + struct ieee80211_sta_ht_cap ht; }; /* @@ -616,6 +619,7 @@ enum rt2x00_flags { CONFIG_EXTERNAL_LNA_BG, CONFIG_DOUBLE_ANTENNA, CONFIG_DISABLE_LINK_TUNING, + CONFIG_CHANNEL_HT40, }; /* @@ -788,6 +792,13 @@ struct rt2x00_dev { u8 freq_offset; /* + * Calibration information (for rt2800usb & rt2800pci). + * [0] -> BW20 + * [1] -> BW40 + */ + u8 calibration[2]; + + /* * Low level statistics which will have * to be kept up to date while device is running. */ diff --git a/drivers/net/wireless/rt2x00/rt2x00config.c b/drivers/net/wireless/rt2x00/rt2x00config.c index 9c2f5517af2..863e399d4fa 100644 --- a/drivers/net/wireless/rt2x00/rt2x00config.c +++ b/drivers/net/wireless/rt2x00/rt2x00config.c @@ -173,6 +173,11 @@ void rt2x00lib_config(struct rt2x00_dev *rt2x00dev, libconf.conf = conf; if (ieee80211_flags & IEEE80211_CONF_CHANGE_CHANNEL) { + if (conf_is_ht40(conf)) + __set_bit(CONFIG_CHANNEL_HT40, &rt2x00dev->flags); + else + __clear_bit(CONFIG_CHANNEL_HT40, &rt2x00dev->flags); + memcpy(&libconf.rf, &rt2x00dev->spec.channels[conf->channel->hw_value], sizeof(libconf.rf)); diff --git a/drivers/net/wireless/rt2x00/rt2x00dev.c b/drivers/net/wireless/rt2x00/rt2x00dev.c index e15086af727..f2270845072 100644 --- a/drivers/net/wireless/rt2x00/rt2x00dev.c +++ b/drivers/net/wireless/rt2x00/rt2x00dev.c @@ -323,19 +323,54 @@ void rt2x00lib_txdone(struct queue_entry *entry, } EXPORT_SYMBOL_GPL(rt2x00lib_txdone); +static int rt2x00lib_rxdone_read_signal(struct rt2x00_dev *rt2x00dev, + struct rxdone_entry_desc *rxdesc) +{ + struct ieee80211_supported_band *sband; + const struct rt2x00_rate *rate; + unsigned int i; + int signal; + int type; + + /* + * For non-HT rates the MCS value needs to contain the + * actually used rate modulation (CCK or OFDM). + */ + if (rxdesc->dev_flags & RXDONE_SIGNAL_MCS) + signal = RATE_MCS(rxdesc->rate_mode, rxdesc->signal); + else + signal = rxdesc->signal; + + type = (rxdesc->dev_flags & RXDONE_SIGNAL_MASK); + + sband = &rt2x00dev->bands[rt2x00dev->curr_band]; + for (i = 0; i < sband->n_bitrates; i++) { + rate = rt2x00_get_rate(sband->bitrates[i].hw_value); + + if (((type == RXDONE_SIGNAL_PLCP) && + (rate->plcp == signal)) || + ((type == RXDONE_SIGNAL_BITRATE) && + (rate->bitrate == signal)) || + ((type == RXDONE_SIGNAL_MCS) && + (rate->mcs == signal))) { + return i; + } + } + + WARNING(rt2x00dev, "Frame received with unrecognized signal, " + "signal=0x%.4x, type=%d.\n", signal, type); + return 0; +} + void rt2x00lib_rxdone(struct rt2x00_dev *rt2x00dev, struct queue_entry *entry) { struct rxdone_entry_desc rxdesc; struct sk_buff *skb; struct ieee80211_rx_status *rx_status = &rt2x00dev->rx_status; - struct ieee80211_supported_band *sband; - const struct rt2x00_rate *rate; unsigned int header_length; bool l2pad; - unsigned int i; - int idx = -1; - + int rate_idx; /* * Allocate a new sk_buffer. If no new buffer available, drop the * received frame and reuse the existing buffer. @@ -379,26 +414,17 @@ void rt2x00lib_rxdone(struct rt2x00_dev *rt2x00dev, rt2x00queue_payload_align(entry->skb, l2pad, header_length); /* - * Update RX statistics. + * Check if the frame was received using HT. In that case, + * the rate is the MCS index and should be passed to mac80211 + * directly. Otherwise we need to translate the signal to + * the correct bitrate index. */ - sband = &rt2x00dev->bands[rt2x00dev->curr_band]; - for (i = 0; i < sband->n_bitrates; i++) { - rate = rt2x00_get_rate(sband->bitrates[i].hw_value); - - if (((rxdesc.dev_flags & RXDONE_SIGNAL_PLCP) && - (rate->plcp == rxdesc.signal)) || - ((rxdesc.dev_flags & RXDONE_SIGNAL_BITRATE) && - (rate->bitrate == rxdesc.signal))) { - idx = i; - break; - } - } - - if (idx < 0) { - WARNING(rt2x00dev, "Frame received with unrecognized signal," - "signal=0x%.2x, type=%d.\n", rxdesc.signal, - (rxdesc.dev_flags & RXDONE_SIGNAL_MASK)); - idx = 0; + if (rxdesc.rate_mode == RATE_MODE_CCK || + rxdesc.rate_mode == RATE_MODE_OFDM) { + rate_idx = rt2x00lib_rxdone_read_signal(rt2x00dev, &rxdesc); + } else { + rxdesc.flags |= RX_FLAG_HT; + rate_idx = rxdesc.signal; } /* @@ -408,7 +434,7 @@ void rt2x00lib_rxdone(struct rt2x00_dev *rt2x00dev, rt2x00debug_update_crypto(rt2x00dev, &rxdesc); rx_status->mactime = rxdesc.timestamp; - rx_status->rate_idx = idx; + rx_status->rate_idx = rate_idx; rx_status->qual = rt2x00link_calculate_signal(rt2x00dev, rxdesc.rssi); rx_status->signal = rxdesc.rssi; rx_status->noise = rxdesc.noise; @@ -443,72 +469,84 @@ const struct rt2x00_rate rt2x00_supported_rates[12] = { .bitrate = 10, .ratemask = BIT(0), .plcp = 0x00, + .mcs = RATE_MCS(RATE_MODE_CCK, 0), }, { .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, .bitrate = 20, .ratemask = BIT(1), .plcp = 0x01, + .mcs = RATE_MCS(RATE_MODE_CCK, 1), }, { .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, .bitrate = 55, .ratemask = BIT(2), .plcp = 0x02, + .mcs = RATE_MCS(RATE_MODE_CCK, 2), }, { .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, .bitrate = 110, .ratemask = BIT(3), .plcp = 0x03, + .mcs = RATE_MCS(RATE_MODE_CCK, 3), }, { .flags = DEV_RATE_OFDM, .bitrate = 60, .ratemask = BIT(4), .plcp = 0x0b, + .mcs = RATE_MCS(RATE_MODE_OFDM, 0), }, { .flags = DEV_RATE_OFDM, .bitrate = 90, .ratemask = BIT(5), .plcp = 0x0f, + .mcs = RATE_MCS(RATE_MODE_OFDM, 1), }, { .flags = DEV_RATE_OFDM, .bitrate = 120, .ratemask = BIT(6), .plcp = 0x0a, + .mcs = RATE_MCS(RATE_MODE_OFDM, 2), }, { .flags = DEV_RATE_OFDM, .bitrate = 180, .ratemask = BIT(7), .plcp = 0x0e, + .mcs = RATE_MCS(RATE_MODE_OFDM, 3), }, { .flags = DEV_RATE_OFDM, .bitrate = 240, .ratemask = BIT(8), .plcp = 0x09, + .mcs = RATE_MCS(RATE_MODE_OFDM, 4), }, { .flags = DEV_RATE_OFDM, .bitrate = 360, .ratemask = BIT(9), .plcp = 0x0d, + .mcs = RATE_MCS(RATE_MODE_OFDM, 5), }, { .flags = DEV_RATE_OFDM, .bitrate = 480, .ratemask = BIT(10), .plcp = 0x08, + .mcs = RATE_MCS(RATE_MODE_OFDM, 6), }, { .flags = DEV_RATE_OFDM, .bitrate = 540, .ratemask = BIT(11), .plcp = 0x0c, + .mcs = RATE_MCS(RATE_MODE_OFDM, 7), }, }; @@ -584,6 +622,8 @@ static int rt2x00lib_probe_hw_modes(struct rt2x00_dev *rt2x00dev, rt2x00dev->bands[IEEE80211_BAND_2GHZ].bitrates = rates; hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &rt2x00dev->bands[IEEE80211_BAND_2GHZ]; + memcpy(&rt2x00dev->bands[IEEE80211_BAND_2GHZ].ht_cap, + &spec->ht, sizeof(spec->ht)); } /* @@ -600,6 +640,8 @@ static int rt2x00lib_probe_hw_modes(struct rt2x00_dev *rt2x00dev, rt2x00dev->bands[IEEE80211_BAND_5GHZ].bitrates = &rates[4]; hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &rt2x00dev->bands[IEEE80211_BAND_5GHZ]; + memcpy(&rt2x00dev->bands[IEEE80211_BAND_5GHZ].ht_cap, + &spec->ht, sizeof(spec->ht)); } return 0; diff --git a/drivers/net/wireless/rt2x00/rt2x00ht.c b/drivers/net/wireless/rt2x00/rt2x00ht.c new file mode 100644 index 00000000000..e3cec839e54 --- /dev/null +++ b/drivers/net/wireless/rt2x00/rt2x00ht.c @@ -0,0 +1,69 @@ +/* + Copyright (C) 2004 - 2009 rt2x00 SourceForge Project + <http://rt2x00.serialmonkey.com> + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the + Free Software Foundation, Inc., + 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +/* + Module: rt2x00lib + Abstract: rt2x00 HT specific routines. + */ + +#include <linux/kernel.h> +#include <linux/module.h> + +#include "rt2x00.h" +#include "rt2x00lib.h" + +void rt2x00ht_create_tx_descriptor(struct queue_entry *entry, + struct txentry_desc *txdesc, + const struct rt2x00_rate *hwrate) +{ + struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(entry->skb); + struct ieee80211_tx_rate *txrate = &tx_info->control.rates[0]; + + if (tx_info->control.sta) + txdesc->mpdu_density = + tx_info->control.sta->ht_cap.ampdu_density; + else + txdesc->mpdu_density = 0; + + txdesc->ba_size = 7; /* FIXME: What value is needed? */ + txdesc->stbc = 0; /* FIXME: What value is needed? */ + + txdesc->mcs = rt2x00_get_rate_mcs(hwrate->mcs); + if (txrate->flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE) + txdesc->mcs |= 0x08; + + /* + * Convert flags + */ + if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) + __set_bit(ENTRY_TXD_HT_AMPDU, &txdesc->flags); + + /* + * Determine HT Mix/Greenfield rate mode + */ + if (txrate->flags & IEEE80211_TX_RC_MCS) + txdesc->rate_mode = RATE_MODE_HT_MIX; + if (txrate->flags & IEEE80211_TX_RC_GREEN_FIELD) + txdesc->rate_mode = RATE_MODE_HT_GREENFIELD; + if (txrate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) + __set_bit(ENTRY_TXD_HT_BW_40, &txdesc->flags); + if (txrate->flags & IEEE80211_TX_RC_SHORT_GI) + __set_bit(ENTRY_TXD_HT_SHORT_GI, &txdesc->flags); +} diff --git a/drivers/net/wireless/rt2x00/rt2x00lib.h b/drivers/net/wireless/rt2x00/rt2x00lib.h index aa284e48d2c..ccc7ba4f318 100644 --- a/drivers/net/wireless/rt2x00/rt2x00lib.h +++ b/drivers/net/wireless/rt2x00/rt2x00lib.h @@ -48,6 +48,7 @@ struct rt2x00_rate { unsigned short ratemask; unsigned short plcp; + unsigned short mcs; }; extern const struct rt2x00_rate rt2x00_supported_rates[12]; @@ -57,6 +58,14 @@ static inline const struct rt2x00_rate *rt2x00_get_rate(const u16 hw_value) return &rt2x00_supported_rates[hw_value & 0xff]; } +#define RATE_MCS(__mode, __mcs) \ + ( (((__mode) & 0x00ff) << 8) | ((__mcs) & 0x00ff) ) + +static inline int rt2x00_get_rate_mcs(const u16 mcs_value) +{ + return (mcs_value & 0x00ff); +} + /* * Radio control handlers. */ @@ -360,6 +369,21 @@ static inline void rt2x00crypto_rx_insert_iv(struct sk_buff *skb, bool l2pad, #endif /* CONFIG_RT2X00_LIB_CRYPTO */ /* + * HT handlers. + */ +#ifdef CONFIG_RT2X00_LIB_HT +void rt2x00ht_create_tx_descriptor(struct queue_entry *entry, + struct txentry_desc *txdesc, + const struct rt2x00_rate *hwrate); +#else +static inline void rt2x00ht_create_tx_descriptor(struct queue_entry *entry, + struct txentry_desc *txdesc, + const struct rt2x00_rate *hwrate) +{ +} +#endif /* CONFIG_RT2X00_LIB_HT */ + +/* * RFkill handlers. */ #ifdef CONFIG_RT2X00_LIB_RFKILL diff --git a/drivers/net/wireless/rt2x00/rt2x00queue.c b/drivers/net/wireless/rt2x00/rt2x00queue.c index bc1742c1d51..44e5b3279ca 100644 --- a/drivers/net/wireless/rt2x00/rt2x00queue.c +++ b/drivers/net/wireless/rt2x00/rt2x00queue.c @@ -361,6 +361,7 @@ static void rt2x00queue_create_tx_descriptor(struct queue_entry *entry, * Apply TX descriptor handling by components */ rt2x00crypto_create_tx_descriptor(entry, txdesc); + rt2x00ht_create_tx_descriptor(entry, txdesc, hwrate); rt2x00queue_create_tx_descriptor_seq(entry, txdesc); rt2x00queue_create_tx_descriptor_plcp(entry, txdesc, hwrate); } diff --git a/drivers/net/wireless/rt2x00/rt2x00queue.h b/drivers/net/wireless/rt2x00/rt2x00queue.h index 13e0ece176a..b5e06347c8a 100644 --- a/drivers/net/wireless/rt2x00/rt2x00queue.h +++ b/drivers/net/wireless/rt2x00/rt2x00queue.h @@ -35,9 +35,12 @@ * for USB devices this restriction does not apply, but the value of * 2432 makes sense since it is big enough to contain the maximum fragment * size according to the ieee802.11 specs. + * The aggregation size depends on support from the driver, but should + * be something around 3840 bytes. */ -#define DATA_FRAME_SIZE 2432 -#define MGMT_FRAME_SIZE 256 +#define DATA_FRAME_SIZE 2432 +#define MGMT_FRAME_SIZE 256 +#define AGGREGATION_SIZE 3840 /** * DOC: Number of entries per queue @@ -148,18 +151,20 @@ static inline struct skb_frame_desc* get_skb_frame_desc(struct sk_buff *skb) * * @RXDONE_SIGNAL_PLCP: Signal field contains the plcp value. * @RXDONE_SIGNAL_BITRATE: Signal field contains the bitrate value. + * @RXDONE_SIGNAL_MCS: Signal field contains the mcs value. * @RXDONE_MY_BSS: Does this frame originate from device's BSS. * @RXDONE_CRYPTO_IV: Driver provided IV/EIV data. * @RXDONE_CRYPTO_ICV: Driver provided ICV data. * @RXDONE_L2PAD: 802.11 payload has been padded to 4-byte boundary. */ enum rxdone_entry_desc_flags { - RXDONE_SIGNAL_PLCP = 1 << 0, - RXDONE_SIGNAL_BITRATE = 1 << 1, - RXDONE_MY_BSS = 1 << 2, - RXDONE_CRYPTO_IV = 1 << 3, - RXDONE_CRYPTO_ICV = 1 << 4, - RXDONE_L2PAD = 1 << 5, + RXDONE_SIGNAL_PLCP = BIT(0), + RXDONE_SIGNAL_BITRATE = BIT(1), + RXDONE_SIGNAL_MCS = BIT(2), + RXDONE_MY_BSS = BIT(3), + RXDONE_CRYPTO_IV = BIT(4), + RXDONE_CRYPTO_ICV = BIT(5), + RXDONE_L2PAD = BIT(6), }; /** @@ -168,7 +173,7 @@ enum rxdone_entry_desc_flags { * from &rxdone_entry_desc to a signal value type. */ #define RXDONE_SIGNAL_MASK \ - ( RXDONE_SIGNAL_PLCP | RXDONE_SIGNAL_BITRATE ) + ( RXDONE_SIGNAL_PLCP | RXDONE_SIGNAL_BITRATE | RXDONE_SIGNAL_MCS ) /** * struct rxdone_entry_desc: RX Entry descriptor @@ -182,6 +187,7 @@ enum rxdone_entry_desc_flags { * @size: Data size of the received frame. * @flags: MAC80211 receive flags (See &enum mac80211_rx_flags). * @dev_flags: Ralink receive flags (See &enum rxdone_entry_desc_flags). + * @rate_mode: Rate mode (See @enum rate_modulation). * @cipher: Cipher type used during decryption. * @cipher_status: Decryption status. * @iv: IV/EIV data used during decryption. @@ -195,6 +201,7 @@ struct rxdone_entry_desc { int size; int flags; int dev_flags; + u16 rate_mode; u8 cipher; u8 cipher_status; @@ -248,6 +255,9 @@ struct txdone_entry_desc { * @ENTRY_TXD_ENCRYPT_PAIRWISE: Use pairwise key table (instead of shared). * @ENTRY_TXD_ENCRYPT_IV: Generate IV/EIV in hardware. * @ENTRY_TXD_ENCRYPT_MMIC: Generate MIC in hardware. + * @ENTRY_TXD_HT_AMPDU: This frame is part of an AMPDU. + * @ENTRY_TXD_HT_BW_40: Use 40MHz Bandwidth. + * @ENTRY_TXD_HT_SHORT_GI: Use short GI. */ enum txentry_desc_flags { ENTRY_TXD_RTS_FRAME, @@ -263,6 +273,9 @@ enum txentry_desc_flags { ENTRY_TXD_ENCRYPT_PAIRWISE, ENTRY_TXD_ENCRYPT_IV, ENTRY_TXD_ENCRYPT_MMIC, + ENTRY_TXD_HT_AMPDU, + ENTRY_TXD_HT_BW_40, + ENTRY_TXD_HT_SHORT_GI, }; /** @@ -278,7 +291,11 @@ enum txentry_desc_flags { * @length_low: PLCP length low word. * @signal: PLCP signal. * @service: PLCP service. + * @msc: MCS. + * @stbc: STBC. + * @ba_size: BA size. * @rate_mode: Rate mode (See @enum rate_modulation). + * @mpdu_density: MDPU density. * @retry_limit: Max number of retries. * @aifs: AIFS value. * @ifs: IFS value. @@ -302,7 +319,11 @@ struct txentry_desc { u16 signal; u16 service; + u16 mcs; + u16 stbc; + u16 ba_size; u16 rate_mode; + u16 mpdu_density; short retry_limit; short aifs; |