diff options
Diffstat (limited to 'drivers/net/wireless/rt2x00')
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2400pci.c | 27 | ||||
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2500pci.c | 50 | ||||
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2500usb.c | 5 | ||||
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2x00.h | 99 | ||||
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2x00link.c | 145 | ||||
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt61pci.c | 49 | ||||
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt73usb.c | 57 |
7 files changed, 233 insertions, 199 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2400pci.c b/drivers/net/wireless/rt2x00/rt2400pci.c index e87ad43e8e8..9104113270d 100644 --- a/drivers/net/wireless/rt2x00/rt2400pci.c +++ b/drivers/net/wireless/rt2x00/rt2400pci.c @@ -600,36 +600,37 @@ static void rt2400pci_link_stats(struct rt2x00_dev *rt2x00dev, qual->false_cca = bbp; } -static inline void rt2400pci_set_vgc(struct rt2x00_dev *rt2x00dev, u8 vgc_level) +static inline void rt2400pci_set_vgc(struct rt2x00_dev *rt2x00dev, + struct link_qual *qual, u8 vgc_level) { rt2400pci_bbp_write(rt2x00dev, 13, vgc_level); - rt2x00dev->link.vgc_level = vgc_level; - rt2x00dev->link.vgc_level_reg = vgc_level; + qual->vgc_level = vgc_level; + qual->vgc_level_reg = vgc_level; } -static void rt2400pci_reset_tuner(struct rt2x00_dev *rt2x00dev) +static void rt2400pci_reset_tuner(struct rt2x00_dev *rt2x00dev, + struct link_qual *qual) { - rt2400pci_set_vgc(rt2x00dev, 0x08); + rt2400pci_set_vgc(rt2x00dev, qual, 0x08); } -static void rt2400pci_link_tuner(struct rt2x00_dev *rt2x00dev) +static void rt2400pci_link_tuner(struct rt2x00_dev *rt2x00dev, + struct link_qual *qual, const u32 count) { - struct link *link = &rt2x00dev->link; - /* * The link tuner should not run longer then 60 seconds, * and should run once every 2 seconds. */ - if (link->count > 60 || !(link->count & 1)) + if (count > 60 || !(count & 1)) return; /* * Base r13 link tuning on the false cca count. */ - if ((link->qual.false_cca > 512) && (link->vgc_level < 0x20)) - rt2400pci_set_vgc(rt2x00dev, ++link->vgc_level); - else if ((link->qual.false_cca < 100) && (link->vgc_level > 0x08)) - rt2400pci_set_vgc(rt2x00dev, --link->vgc_level); + if ((qual->false_cca > 512) && (qual->vgc_level < 0x20)) + rt2400pci_set_vgc(rt2x00dev, qual, ++qual->vgc_level); + else if ((qual->false_cca < 100) && (qual->vgc_level > 0x08)) + rt2400pci_set_vgc(rt2x00dev, qual, --qual->vgc_level); } /* diff --git a/drivers/net/wireless/rt2x00/rt2500pci.c b/drivers/net/wireless/rt2x00/rt2500pci.c index 5b98a74a255..fb86e2c5524 100644 --- a/drivers/net/wireless/rt2x00/rt2500pci.c +++ b/drivers/net/wireless/rt2x00/rt2500pci.c @@ -639,31 +639,31 @@ static void rt2500pci_link_stats(struct rt2x00_dev *rt2x00dev, qual->false_cca = rt2x00_get_field32(reg, CNT3_FALSE_CCA); } -static inline void rt2500pci_set_vgc(struct rt2x00_dev *rt2x00dev, u8 vgc_level) +static inline void rt2500pci_set_vgc(struct rt2x00_dev *rt2x00dev, + struct link_qual *qual, u8 vgc_level) { - if (rt2x00dev->link.vgc_level_reg != vgc_level) { + if (qual->vgc_level_reg != vgc_level) { rt2500pci_bbp_write(rt2x00dev, 17, vgc_level); - rt2x00dev->link.vgc_level_reg = vgc_level; + qual->vgc_level_reg = vgc_level; } } -static void rt2500pci_reset_tuner(struct rt2x00_dev *rt2x00dev) +static void rt2500pci_reset_tuner(struct rt2x00_dev *rt2x00dev, + struct link_qual *qual) { - rt2500pci_set_vgc(rt2x00dev, 0x48); + rt2500pci_set_vgc(rt2x00dev, qual, 0x48); } -static void rt2500pci_link_tuner(struct rt2x00_dev *rt2x00dev) +static void rt2500pci_link_tuner(struct rt2x00_dev *rt2x00dev, + struct link_qual *qual, const u32 count) { - struct link *link = &rt2x00dev->link; - int rssi = rt2x00_get_link_rssi(link); - /* * To prevent collisions with MAC ASIC on chipsets * up to version C the link tuning should halt after 20 * seconds while being associated. */ if (rt2x00_rev(&rt2x00dev->chip) < RT2560_VERSION_D && - rt2x00dev->intf_associated && link->count > 20) + rt2x00dev->intf_associated && count > 20) return; /* @@ -681,25 +681,25 @@ static void rt2500pci_link_tuner(struct rt2x00_dev *rt2x00dev) * then corrupt the R17 tuning. To remidy this the tuning should * be stopped (While making sure the R17 value will not exceed limits) */ - if (rssi < -80 && link->count > 20) { - if (link->vgc_level_reg >= 0x41) - rt2500pci_set_vgc(rt2x00dev, link->vgc_level); + if (qual->rssi < -80 && count > 20) { + if (qual->vgc_level_reg >= 0x41) + rt2500pci_set_vgc(rt2x00dev, qual, qual->vgc_level); return; } /* * Special big-R17 for short distance */ - if (rssi >= -58) { - rt2500pci_set_vgc(rt2x00dev, 0x50); + if (qual->rssi >= -58) { + rt2500pci_set_vgc(rt2x00dev, qual, 0x50); return; } /* * Special mid-R17 for middle distance */ - if (rssi >= -74) { - rt2500pci_set_vgc(rt2x00dev, 0x41); + if (qual->rssi >= -74) { + rt2500pci_set_vgc(rt2x00dev, qual, 0x41); return; } @@ -707,8 +707,8 @@ static void rt2500pci_link_tuner(struct rt2x00_dev *rt2x00dev) * Leave short or middle distance condition, restore r17 * to the dynamic tuning range. */ - if (link->vgc_level_reg >= 0x41) { - rt2500pci_set_vgc(rt2x00dev, link->vgc_level); + if (qual->vgc_level_reg >= 0x41) { + rt2500pci_set_vgc(rt2x00dev, qual, qual->vgc_level); return; } @@ -718,12 +718,12 @@ dynamic_cca_tune: * R17 is inside the dynamic tuning range, * start tuning the link based on the false cca counter. */ - if (link->qual.false_cca > 512 && link->vgc_level_reg < 0x40) { - rt2500pci_set_vgc(rt2x00dev, ++link->vgc_level_reg); - link->vgc_level = link->vgc_level_reg; - } else if (link->qual.false_cca < 100 && link->vgc_level_reg > 0x32) { - rt2500pci_set_vgc(rt2x00dev, --link->vgc_level_reg); - link->vgc_level = link->vgc_level_reg; + if (qual->false_cca > 512 && qual->vgc_level_reg < 0x40) { + rt2500pci_set_vgc(rt2x00dev, qual, ++qual->vgc_level_reg); + qual->vgc_level = qual->vgc_level_reg; + } else if (qual->false_cca < 100 && qual->vgc_level_reg > 0x32) { + rt2500pci_set_vgc(rt2x00dev, qual, --qual->vgc_level_reg); + qual->vgc_level = qual->vgc_level_reg; } } diff --git a/drivers/net/wireless/rt2x00/rt2500usb.c b/drivers/net/wireless/rt2x00/rt2500usb.c index 23cf585f03a..557fcf2b30e 100644 --- a/drivers/net/wireless/rt2x00/rt2500usb.c +++ b/drivers/net/wireless/rt2x00/rt2500usb.c @@ -698,7 +698,8 @@ static void rt2500usb_link_stats(struct rt2x00_dev *rt2x00dev, qual->false_cca = rt2x00_get_field16(reg, STA_CSR3_FALSE_CCA_ERROR); } -static void rt2500usb_reset_tuner(struct rt2x00_dev *rt2x00dev) +static void rt2500usb_reset_tuner(struct rt2x00_dev *rt2x00dev, + struct link_qual *qual) { u16 eeprom; u16 value; @@ -719,7 +720,7 @@ static void rt2500usb_reset_tuner(struct rt2x00_dev *rt2x00dev) value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_VGCUPPER); rt2500usb_bbp_write(rt2x00dev, 17, value); - rt2x00dev->link.vgc_level = value; + qual->vgc_level = value; } /* diff --git a/drivers/net/wireless/rt2x00/rt2x00.h b/drivers/net/wireless/rt2x00/rt2x00.h index 8935f2c005c..dea502234cf 100644 --- a/drivers/net/wireless/rt2x00/rt2x00.h +++ b/drivers/net/wireless/rt2x00/rt2x00.h @@ -177,52 +177,41 @@ struct antenna_setup { */ struct link_qual { /* - * Statistics required for Link tuning. - * For the average RSSI value we use the "Walking average" approach. - * When adding RSSI to the average value the following calculation - * is needed: - * - * avg_rssi = ((avg_rssi * 7) + rssi) / 8; + * Statistics required for Link tuning by driver + * The rssi value is provided by rt2x00lib during the + * link_tuner() callback function. + * The false_cca field is filled during the link_stats() + * callback function and could be used during the + * link_tuner() callback function. + */ + int rssi; + int false_cca; + + /* + * VGC levels + * Hardware driver will tune the VGC level during each call + * to the link_tuner() callback function. This vgc_level is + * is determined based on the link quality statistics like + * average RSSI and the false CCA count. * - * The advantage of this approach is that we only need 1 variable - * to store the average in (No need for a count and a total). - * But more importantly, normal average values will over time - * move less and less towards newly added values this results - * that with link tuning, the device can have a very good RSSI - * for a few minutes but when the device is moved away from the AP - * the average will not decrease fast enough to compensate. - * The walking average compensates this and will move towards - * the new values correctly allowing a effective link tuning. + * In some cases the drivers need to differentiate between + * the currently "desired" VGC level and the level configured + * in the hardware. The latter is important to reduce the + * number of BBP register reads to reduce register access + * overhead. For this reason we store both values here. */ - int avg_rssi; - int false_cca; + u8 vgc_level; + u8 vgc_level_reg; /* * Statistics required for Signal quality calculation. - * For calculating the Signal quality we have to determine - * the total number of success and failed RX and TX frames. - * After that we also use the average RSSI value to help - * determining the signal quality. - * For the calculation we will use the following algorithm: - * - * rssi_percentage = (avg_rssi * 100) / rssi_offset - * rx_percentage = (rx_success * 100) / rx_total - * tx_percentage = (tx_success * 100) / tx_total - * avg_signal = ((WEIGHT_RSSI * avg_rssi) + - * (WEIGHT_TX * tx_percentage) + - * (WEIGHT_RX * rx_percentage)) / 100 - * - * This value should then be checked to not be greater then 100. + * These fields might be changed during the link_stats() + * callback function. */ - int rx_percentage; int rx_success; int rx_failed; - int tx_percentage; int tx_success; int tx_failed; -#define WEIGHT_RSSI 20 -#define WEIGHT_RX 40 -#define WEIGHT_TX 40 }; /* @@ -286,14 +275,16 @@ struct link { struct link_ant ant; /* - * Active VGC level (for false cca tuning) + * Currently active average RSSI value */ - u8 vgc_level; + int avg_rssi; /* - * VGC level as configured in register + * Currently precalculated percentages of successful + * TX and RX frames. */ - u8 vgc_level_reg; + int rx_percentage; + int tx_percentage; /* * Work structure for scheduling periodic link tuning. @@ -302,28 +293,6 @@ struct link { }; /* - * Small helper macro to work with moving/walking averages. - */ -#define MOVING_AVERAGE(__avg, __val, __samples) \ - ( (((__avg) * ((__samples) - 1)) + (__val)) / (__samples) ) - -/* - * When we lack RSSI information return something less then -80 to - * tell the driver to tune the device to maximum sensitivity. - */ -#define DEFAULT_RSSI ( -128 ) - -/* - * Link quality access functions. - */ -static inline int rt2x00_get_link_rssi(struct link *link) -{ - if (link->qual.avg_rssi && link->qual.rx_success) - return link->qual.avg_rssi; - return DEFAULT_RSSI; -} - -/* * Interface structure * Per interface configuration details, this structure * is allocated as the private data for ieee80211_vif. @@ -522,8 +491,10 @@ struct rt2x00lib_ops { int (*rfkill_poll) (struct rt2x00_dev *rt2x00dev); void (*link_stats) (struct rt2x00_dev *rt2x00dev, struct link_qual *qual); - void (*reset_tuner) (struct rt2x00_dev *rt2x00dev); - void (*link_tuner) (struct rt2x00_dev *rt2x00dev); + void (*reset_tuner) (struct rt2x00_dev *rt2x00dev, + struct link_qual *qual); + void (*link_tuner) (struct rt2x00_dev *rt2x00dev, + struct link_qual *qual, const u32 count); /* * TX control handlers diff --git a/drivers/net/wireless/rt2x00/rt2x00link.c b/drivers/net/wireless/rt2x00/rt2x00link.c index 0462d5ab6e9..ee08f1167f5 100644 --- a/drivers/net/wireless/rt2x00/rt2x00link.c +++ b/drivers/net/wireless/rt2x00/rt2x00link.c @@ -29,6 +29,71 @@ #include "rt2x00.h" #include "rt2x00lib.h" +/* + * When we lack RSSI information return something less then -80 to + * tell the driver to tune the device to maximum sensitivity. + */ +#define DEFAULT_RSSI -128 + +/* + * When no TX/RX percentage could be calculated due to lack of + * frames on the air, we fallback to a percentage of 50%. + * This will assure we will get at least get some decent value + * when the link tuner starts. + * The value will be dropped and overwritten with the correct (measured) + * value anyway during the first run of the link tuner. + */ +#define DEFAULT_PERCENTAGE 50 + +/* + * Small helper macro to work with moving/walking averages. + * When adding a value to the average value the following calculation + * is needed: + * + * avg_rssi = ((avg_rssi * 7) + rssi) / 8; + * + * The advantage of this approach is that we only need 1 variable + * to store the average in (No need for a count and a total). + * But more importantly, normal average values will over time + * move less and less towards newly added values this results + * that with link tuning, the device can have a very good RSSI + * for a few minutes but when the device is moved away from the AP + * the average will not decrease fast enough to compensate. + * The walking average compensates this and will move towards + * the new values correctly allowing a effective link tuning. + */ +#define MOVING_AVERAGE(__avg, __val, __samples) \ + ( (((__avg) * ((__samples) - 1)) + (__val)) / (__samples) ) + +/* + * Small helper macro for percentage calculation + * This is a very simple macro with the only catch that it will + * produce a default value in case no total value was provided. + */ +#define PERCENTAGE(__value, __total) \ + ( (__total) ? (((__value) * 100) / (__total)) : (DEFAULT_PERCENTAGE) ) + +/* + * For calculating the Signal quality we have determined + * the total number of success and failed RX and TX frames. + * With the addition of the average RSSI value we can determine + * the link quality using the following algorithm: + * + * rssi_percentage = (avg_rssi * 100) / rssi_offset + * rx_percentage = (rx_success * 100) / rx_total + * tx_percentage = (tx_success * 100) / tx_total + * avg_signal = ((WEIGHT_RSSI * avg_rssi) + + * (WEIGHT_TX * tx_percentage) + + * (WEIGHT_RX * rx_percentage)) / 100 + * + * This value should then be checked to not be greater then 100. + * This means the values of WEIGHT_RSSI, WEIGHT_RX, WEIGHT_TX must + * sum up to 100 as well. + */ +#define WEIGHT_RSSI 20 +#define WEIGHT_RX 40 +#define WEIGHT_TX 40 + static int rt2x00link_antenna_get_link_rssi(struct rt2x00_dev *rt2x00dev) { struct link_ant *ant = &rt2x00dev->link.ant; @@ -191,6 +256,7 @@ void rt2x00link_update_stats(struct rt2x00_dev *rt2x00dev, struct sk_buff *skb, struct rxdone_entry_desc *rxdesc) { + struct link *link = &rt2x00dev->link; struct link_qual *qual = &rt2x00dev->link.qual; struct link_ant *ant = &rt2x00dev->link.ant; struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; @@ -215,9 +281,9 @@ void rt2x00link_update_stats(struct rt2x00_dev *rt2x00dev, /* * Update global RSSI */ - if (qual->avg_rssi) - avg_rssi = MOVING_AVERAGE(qual->avg_rssi, rxdesc->rssi, 8); - qual->avg_rssi = avg_rssi; + if (link->avg_rssi) + avg_rssi = MOVING_AVERAGE(link->avg_rssi, rxdesc->rssi, 8); + link->avg_rssi = avg_rssi; /* * Update antenna RSSI @@ -229,21 +295,13 @@ void rt2x00link_update_stats(struct rt2x00_dev *rt2x00dev, static void rt2x00link_precalculate_signal(struct rt2x00_dev *rt2x00dev) { + struct link *link = &rt2x00dev->link; struct link_qual *qual = &rt2x00dev->link.qual; - if (qual->rx_failed || qual->rx_success) - qual->rx_percentage = - (qual->rx_success * 100) / - (qual->rx_failed + qual->rx_success); - else - qual->rx_percentage = 50; - - if (qual->tx_failed || qual->tx_success) - qual->tx_percentage = - (qual->tx_success * 100) / - (qual->tx_failed + qual->tx_success); - else - qual->tx_percentage = 50; + link->rx_percentage = + PERCENTAGE(qual->rx_success, qual->rx_failed + qual->rx_success); + link->tx_percentage = + PERCENTAGE(qual->tx_success, qual->tx_failed + qual->tx_success); qual->rx_success = 0; qual->rx_failed = 0; @@ -253,7 +311,7 @@ static void rt2x00link_precalculate_signal(struct rt2x00_dev *rt2x00dev) int rt2x00link_calculate_signal(struct rt2x00_dev *rt2x00dev, int rssi) { - struct link_qual *qual = &rt2x00dev->link.qual; + struct link *link = &rt2x00dev->link; int rssi_percentage = 0; int signal; @@ -267,22 +325,22 @@ int rt2x00link_calculate_signal(struct rt2x00_dev *rt2x00dev, int rssi) * Calculate the different percentages, * which will be used for the signal. */ - rssi_percentage = (rssi * 100) / rt2x00dev->rssi_offset; + rssi_percentage = PERCENTAGE(rssi, rt2x00dev->rssi_offset); /* * Add the individual percentages and use the WEIGHT * defines to calculate the current link signal. */ signal = ((WEIGHT_RSSI * rssi_percentage) + - (WEIGHT_TX * qual->tx_percentage) + - (WEIGHT_RX * qual->rx_percentage)) / 100; + (WEIGHT_TX * link->tx_percentage) + + (WEIGHT_RX * link->rx_percentage)) / 100; return max_t(int, signal, 100); } void rt2x00link_start_tuner(struct rt2x00_dev *rt2x00dev) { - struct link_qual *qual = &rt2x00dev->link.qual; + struct link *link = &rt2x00dev->link; /* * Link tuning should only be performed when @@ -293,26 +351,13 @@ void rt2x00link_start_tuner(struct rt2x00_dev *rt2x00dev) if (!rt2x00dev->intf_ap_count && !rt2x00dev->intf_sta_count) return; - /* - * Clear all (possibly) pre-existing quality statistics. - */ - memset(qual, 0, sizeof(*qual)); - - /* - * The RX and TX percentage should start at 50% - * this will assure we will get at least get some - * decent value when the link tuner starts. - * The value will be dropped and overwritten with - * the correct (measured) value anyway during the - * first run of the link tuner. - */ - qual->rx_percentage = 50; - qual->tx_percentage = 50; + link->rx_percentage = DEFAULT_PERCENTAGE; + link->tx_percentage = DEFAULT_PERCENTAGE; rt2x00link_reset_tuner(rt2x00dev, false); queue_delayed_work(rt2x00dev->hw->workqueue, - &rt2x00dev->link.work, LINK_TUNE_INTERVAL); + &link->work, LINK_TUNE_INTERVAL); } void rt2x00link_stop_tuner(struct rt2x00_dev *rt2x00dev) @@ -322,6 +367,8 @@ void rt2x00link_stop_tuner(struct rt2x00_dev *rt2x00dev) void rt2x00link_reset_tuner(struct rt2x00_dev *rt2x00dev, bool antenna) { + struct link_qual *qual = &rt2x00dev->link.qual; + if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) return; @@ -334,12 +381,12 @@ void rt2x00link_reset_tuner(struct rt2x00_dev *rt2x00dev, bool antenna) * first minute after being enabled. */ rt2x00dev->link.count = 0; - rt2x00dev->link.vgc_level = 0; + memset(qual, 0, sizeof(*qual)); /* * Reset the link tuner. */ - rt2x00dev->ops->lib->reset_tuner(rt2x00dev); + rt2x00dev->ops->lib->reset_tuner(rt2x00dev, qual); if (antenna) rt2x00link_antenna_reset(rt2x00dev); @@ -349,6 +396,7 @@ static void rt2x00link_tuner(struct work_struct *work) { struct rt2x00_dev *rt2x00dev = container_of(work, struct rt2x00_dev, link.work.work); + struct link *link = &rt2x00dev->link; struct link_qual *qual = &rt2x00dev->link.qual; /* @@ -365,11 +413,22 @@ static void rt2x00link_tuner(struct work_struct *work) rt2x00dev->low_level_stats.dot11FCSErrorCount += qual->rx_failed; /* + * Update quality RSSI for link tuning, + * when we have received some frames and we managed to + * collect the RSSI data we could use this. Otherwise we + * must fallback to the default RSSI value. + */ + if (!link->avg_rssi || !qual->rx_success) + qual->rssi = DEFAULT_RSSI; + else + qual->rssi = link->avg_rssi; + + /* * Only perform the link tuning when Link tuning * has been enabled (This could have been disabled from the EEPROM). */ if (!test_bit(CONFIG_DISABLE_LINK_TUNING, &rt2x00dev->flags)) - rt2x00dev->ops->lib->link_tuner(rt2x00dev); + rt2x00dev->ops->lib->link_tuner(rt2x00dev, qual, link->count); /* * Precalculate a portion of the link signal which is @@ -380,7 +439,7 @@ static void rt2x00link_tuner(struct work_struct *work) /* * Send a signal to the led to update the led signal strength. */ - rt2x00leds_led_quality(rt2x00dev, qual->avg_rssi); + rt2x00leds_led_quality(rt2x00dev, link->avg_rssi); /* * Evaluate antenna setup, make this the last step since this could @@ -391,9 +450,9 @@ static void rt2x00link_tuner(struct work_struct *work) /* * Increase tuner counter, and reschedule the next link tuner run. */ - rt2x00dev->link.count++; + link->count++; queue_delayed_work(rt2x00dev->hw->workqueue, - &rt2x00dev->link.work, LINK_TUNE_INTERVAL); + &link->work, LINK_TUNE_INTERVAL); } void rt2x00link_register(struct rt2x00_dev *rt2x00dev) diff --git a/drivers/net/wireless/rt2x00/rt61pci.c b/drivers/net/wireless/rt2x00/rt61pci.c index 94523f7f0d8..ed829879c94 100644 --- a/drivers/net/wireless/rt2x00/rt61pci.c +++ b/drivers/net/wireless/rt2x00/rt61pci.c @@ -1046,24 +1046,25 @@ static void rt61pci_link_stats(struct rt2x00_dev *rt2x00dev, qual->false_cca = rt2x00_get_field32(reg, STA_CSR1_FALSE_CCA_ERROR); } -static inline void rt61pci_set_vgc(struct rt2x00_dev *rt2x00dev, u8 vgc_level) +static inline void rt61pci_set_vgc(struct rt2x00_dev *rt2x00dev, + struct link_qual *qual, u8 vgc_level) { - if (rt2x00dev->link.vgc_level != vgc_level) { + if (qual->vgc_level != vgc_level) { rt61pci_bbp_write(rt2x00dev, 17, vgc_level); - rt2x00dev->link.vgc_level = vgc_level; - rt2x00dev->link.vgc_level_reg = vgc_level; + qual->vgc_level = vgc_level; + qual->vgc_level_reg = vgc_level; } } -static void rt61pci_reset_tuner(struct rt2x00_dev *rt2x00dev) +static void rt61pci_reset_tuner(struct rt2x00_dev *rt2x00dev, + struct link_qual *qual) { - rt61pci_set_vgc(rt2x00dev, 0x20); + rt61pci_set_vgc(rt2x00dev, qual, 0x20); } -static void rt61pci_link_tuner(struct rt2x00_dev *rt2x00dev) +static void rt61pci_link_tuner(struct rt2x00_dev *rt2x00dev, + struct link_qual *qual, const u32 count) { - struct link *link = &rt2x00dev->link; - int rssi = rt2x00_get_link_rssi(link); u8 up_bound; u8 low_bound; @@ -1096,32 +1097,32 @@ static void rt61pci_link_tuner(struct rt2x00_dev *rt2x00dev) /* * Special big-R17 for very short distance */ - if (rssi >= -35) { - rt61pci_set_vgc(rt2x00dev, 0x60); + if (qual->rssi >= -35) { + rt61pci_set_vgc(rt2x00dev, qual, 0x60); return; } /* * Special big-R17 for short distance */ - if (rssi >= -58) { - rt61pci_set_vgc(rt2x00dev, up_bound); + if (qual->rssi >= -58) { + rt61pci_set_vgc(rt2x00dev, qual, up_bound); return; } /* * Special big-R17 for middle-short distance */ - if (rssi >= -66) { - rt61pci_set_vgc(rt2x00dev, low_bound + 0x10); + if (qual->rssi >= -66) { + rt61pci_set_vgc(rt2x00dev, qual, low_bound + 0x10); return; } /* * Special mid-R17 for middle distance */ - if (rssi >= -74) { - rt61pci_set_vgc(rt2x00dev, low_bound + 0x08); + if (qual->rssi >= -74) { + rt61pci_set_vgc(rt2x00dev, qual, low_bound + 0x08); return; } @@ -1129,12 +1130,12 @@ static void rt61pci_link_tuner(struct rt2x00_dev *rt2x00dev) * Special case: Change up_bound based on the rssi. * Lower up_bound when rssi is weaker then -74 dBm. */ - up_bound -= 2 * (-74 - rssi); + up_bound -= 2 * (-74 - qual->rssi); if (low_bound > up_bound) up_bound = low_bound; - if (link->vgc_level > up_bound) { - rt61pci_set_vgc(rt2x00dev, up_bound); + if (qual->vgc_level > up_bound) { + rt61pci_set_vgc(rt2x00dev, qual, up_bound); return; } @@ -1144,10 +1145,10 @@ dynamic_cca_tune: * r17 does not yet exceed upper limit, continue and base * the r17 tuning on the false CCA count. */ - if ((link->qual.false_cca > 512) && (link->vgc_level < up_bound)) - rt61pci_set_vgc(rt2x00dev, ++link->vgc_level); - else if ((link->qual.false_cca < 100) && (link->vgc_level > low_bound)) - rt61pci_set_vgc(rt2x00dev, --link->vgc_level); + if ((qual->false_cca > 512) && (qual->vgc_level < up_bound)) + rt61pci_set_vgc(rt2x00dev, qual, ++qual->vgc_level); + else if ((qual->false_cca < 100) && (qual->vgc_level > low_bound)) + rt61pci_set_vgc(rt2x00dev, qual, --qual->vgc_level); } /* diff --git a/drivers/net/wireless/rt2x00/rt73usb.c b/drivers/net/wireless/rt2x00/rt73usb.c index b5443148d62..e99bcacfc19 100644 --- a/drivers/net/wireless/rt2x00/rt73usb.c +++ b/drivers/net/wireless/rt2x00/rt73usb.c @@ -924,24 +924,25 @@ static void rt73usb_link_stats(struct rt2x00_dev *rt2x00dev, qual->false_cca = rt2x00_get_field32(reg, STA_CSR1_FALSE_CCA_ERROR); } -static inline void rt73usb_set_vgc(struct rt2x00_dev *rt2x00dev, u8 vgc_level) +static inline void rt73usb_set_vgc(struct rt2x00_dev *rt2x00dev, + struct link_qual *qual, u8 vgc_level) { - if (rt2x00dev->link.vgc_level != vgc_level) { + if (qual->vgc_level != vgc_level) { rt73usb_bbp_write(rt2x00dev, 17, vgc_level); - rt2x00dev->link.vgc_level = vgc_level; - rt2x00dev->link.vgc_level_reg = vgc_level; + qual->vgc_level = vgc_level; + qual->vgc_level_reg = vgc_level; } } -static void rt73usb_reset_tuner(struct rt2x00_dev *rt2x00dev) +static void rt73usb_reset_tuner(struct rt2x00_dev *rt2x00dev, + struct link_qual *qual) { - rt73usb_set_vgc(rt2x00dev, 0x20); + rt73usb_set_vgc(rt2x00dev, qual, 0x20); } -static void rt73usb_link_tuner(struct rt2x00_dev *rt2x00dev) +static void rt73usb_link_tuner(struct rt2x00_dev *rt2x00dev, + struct link_qual *qual, const u32 count) { - struct link *link = &rt2x00dev->link; - int rssi = rt2x00_get_link_rssi(link); u8 up_bound; u8 low_bound; @@ -957,10 +958,10 @@ static void rt73usb_link_tuner(struct rt2x00_dev *rt2x00dev) up_bound += 0x10; } } else { - if (rssi > -82) { + if (qual->rssi > -82) { low_bound = 0x1c; up_bound = 0x40; - } else if (rssi > -84) { + } else if (qual->rssi > -84) { low_bound = 0x1c; up_bound = 0x20; } else { @@ -984,32 +985,32 @@ static void rt73usb_link_tuner(struct rt2x00_dev *rt2x00dev) /* * Special big-R17 for very short distance */ - if (rssi > -35) { - rt73usb_set_vgc(rt2x00dev, 0x60); + if (qual->rssi > -35) { + rt73usb_set_vgc(rt2x00dev, qual, 0x60); return; } /* * Special big-R17 for short distance */ - if (rssi >= -58) { - rt73usb_set_vgc(rt2x00dev, up_bound); + if (qual->rssi >= -58) { + rt73usb_set_vgc(rt2x00dev, qual, up_bound); return; } /* * Special big-R17 for middle-short distance */ - if (rssi >= -66) { - rt73usb_set_vgc(rt2x00dev, low_bound + 0x10); + if (qual->rssi >= -66) { + rt73usb_set_vgc(rt2x00dev, qual, low_bound + 0x10); return; } /* * Special mid-R17 for middle distance */ - if (rssi >= -74) { - rt73usb_set_vgc(rt2x00dev, low_bound + 0x08); + if (qual->rssi >= -74) { + rt73usb_set_vgc(rt2x00dev, qual, low_bound + 0x08); return; } @@ -1017,12 +1018,12 @@ static void rt73usb_link_tuner(struct rt2x00_dev *rt2x00dev) * Special case: Change up_bound based on the rssi. * Lower up_bound when rssi is weaker then -74 dBm. */ - up_bound -= 2 * (-74 - rssi); + up_bound -= 2 * (-74 - qual->rssi); if (low_bound > up_bound) up_bound = low_bound; - if (link->vgc_level > up_bound) { - rt73usb_set_vgc(rt2x00dev, up_bound); + if (qual->vgc_level > up_bound) { + rt73usb_set_vgc(rt2x00dev, qual, up_bound); return; } @@ -1032,12 +1033,12 @@ dynamic_cca_tune: * r17 does not yet exceed upper limit, continue and base * the r17 tuning on the false CCA count. */ - if ((link->qual.false_cca > 512) && (link->vgc_level < up_bound)) - rt73usb_set_vgc(rt2x00dev, - min_t(u8, link->vgc_level + 4, up_bound)); - else if ((link->qual.false_cca < 100) && (link->vgc_level > low_bound)) - rt73usb_set_vgc(rt2x00dev, - max_t(u8, link->vgc_level - 4, low_bound)); + if ((qual->false_cca > 512) && (qual->vgc_level < up_bound)) + rt73usb_set_vgc(rt2x00dev, qual, + min_t(u8, qual->vgc_level + 4, up_bound)); + else if ((qual->false_cca < 100) && (qual->vgc_level > low_bound)) + rt73usb_set_vgc(rt2x00dev, qual, + max_t(u8, qual->vgc_level - 4, low_bound)); } /* |