diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2800.h | 2 | ||||
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2800lib.c | 57 | ||||
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2800lib.h | 2 | ||||
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2800pci.c | 2 | ||||
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2800usb.c | 2 |
5 files changed, 55 insertions, 10 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2800.h b/drivers/net/wireless/rt2x00/rt2800.h index 3cda22931876..edd3734b8b32 100644 --- a/drivers/net/wireless/rt2x00/rt2800.h +++ b/drivers/net/wireless/rt2x00/rt2800.h @@ -74,7 +74,7 @@ * Signal information. * Default offset is required for RSSI <-> dBm conversion. */ -#define DEFAULT_RSSI_OFFSET 120 /* FIXME */ +#define DEFAULT_RSSI_OFFSET 120 /* * Register layout information. diff --git a/drivers/net/wireless/rt2x00/rt2800lib.c b/drivers/net/wireless/rt2x00/rt2800lib.c index 9030eef2403d..255d089e87ea 100644 --- a/drivers/net/wireless/rt2x00/rt2800lib.c +++ b/drivers/net/wireless/rt2x00/rt2800lib.c @@ -325,9 +325,53 @@ void rt2800_write_txwi(__le32 *txwi, struct txentry_desc *txdesc) } EXPORT_SYMBOL_GPL(rt2800_write_txwi); -void rt2800_process_rxwi(struct sk_buff *skb, struct rxdone_entry_desc *rxdesc) +static int rt2800_agc_to_rssi(struct rt2x00_dev *rt2x00dev, int rxwi_w2) { - __le32 *rxwi = (__le32 *) skb->data; + int rssi0 = rt2x00_get_field32(rxwi_w2, RXWI_W2_RSSI0); + int rssi1 = rt2x00_get_field32(rxwi_w2, RXWI_W2_RSSI1); + int rssi2 = rt2x00_get_field32(rxwi_w2, RXWI_W2_RSSI2); + u16 eeprom; + u8 offset0; + u8 offset1; + u8 offset2; + + if (rt2x00dev->rx_status.band == IEEE80211_BAND_2GHZ) { + rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_BG, &eeprom); + offset0 = rt2x00_get_field16(eeprom, EEPROM_RSSI_BG_OFFSET0); + offset1 = rt2x00_get_field16(eeprom, EEPROM_RSSI_BG_OFFSET1); + rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_BG2, &eeprom); + offset2 = rt2x00_get_field16(eeprom, EEPROM_RSSI_BG2_OFFSET2); + } else { + rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_A, &eeprom); + offset0 = rt2x00_get_field16(eeprom, EEPROM_RSSI_A_OFFSET0); + offset1 = rt2x00_get_field16(eeprom, EEPROM_RSSI_A_OFFSET1); + rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_A2, &eeprom); + offset2 = rt2x00_get_field16(eeprom, EEPROM_RSSI_A2_OFFSET2); + } + + /* + * Convert the value from the descriptor into the RSSI value + * If the value in the descriptor is 0, it is considered invalid + * and the default (extremely low) rssi value is assumed + */ + rssi0 = (rssi0) ? (-12 - offset0 - rt2x00dev->lna_gain - rssi0) : -128; + rssi1 = (rssi1) ? (-12 - offset1 - rt2x00dev->lna_gain - rssi1) : -128; + rssi2 = (rssi2) ? (-12 - offset2 - rt2x00dev->lna_gain - rssi2) : -128; + + /* + * mac80211 only accepts a single RSSI value. Calculating the + * average doesn't deliver a fair answer either since -60:-60 would + * be considered equally good as -50:-70 while the second is the one + * which gives less energy... + */ + rssi0 = max(rssi0, rssi1); + return max(rssi0, rssi2); +} + +void rt2800_process_rxwi(struct queue_entry *entry, + struct rxdone_entry_desc *rxdesc) +{ + __le32 *rxwi = (__le32 *) entry->skb->data; u32 word; rt2x00_desc_read(rxwi, 0, &word); @@ -358,14 +402,15 @@ void rt2800_process_rxwi(struct sk_buff *skb, struct rxdone_entry_desc *rxdesc) rt2x00_desc_read(rxwi, 2, &word); - rxdesc->rssi = - (rt2x00_get_field32(word, RXWI_W2_RSSI0) + - rt2x00_get_field32(word, RXWI_W2_RSSI1)) / 2; + /* + * Convert descriptor AGC value to RSSI value. + */ + rxdesc->rssi = rt2800_agc_to_rssi(entry->queue->rt2x00dev, word); /* * Remove RXWI descriptor from start of buffer. */ - skb_pull(skb, RXWI_DESC_SIZE); + skb_pull(entry->skb, RXWI_DESC_SIZE); } EXPORT_SYMBOL_GPL(rt2800_process_rxwi); diff --git a/drivers/net/wireless/rt2x00/rt2800lib.h b/drivers/net/wireless/rt2x00/rt2800lib.h index 8313dbf441a5..eb3a4f50a363 100644 --- a/drivers/net/wireless/rt2x00/rt2800lib.h +++ b/drivers/net/wireless/rt2x00/rt2800lib.h @@ -121,7 +121,7 @@ void rt2800_mcu_request(struct rt2x00_dev *rt2x00dev, const u8 arg0, const u8 arg1); void rt2800_write_txwi(__le32 *txwi, struct txentry_desc *txdesc); -void rt2800_process_rxwi(struct sk_buff *skb, struct rxdone_entry_desc *txdesc); +void rt2800_process_rxwi(struct queue_entry *entry, struct rxdone_entry_desc *txdesc); void rt2800_write_beacon(struct queue_entry *entry, struct txentry_desc *txdesc); diff --git a/drivers/net/wireless/rt2x00/rt2800pci.c b/drivers/net/wireless/rt2x00/rt2800pci.c index 6f11760117da..faf71e2aeb64 100644 --- a/drivers/net/wireless/rt2x00/rt2800pci.c +++ b/drivers/net/wireless/rt2x00/rt2800pci.c @@ -805,7 +805,7 @@ static void rt2800pci_fill_rxdone(struct queue_entry *entry, /* * Process the RXWI structure that is at the start of the buffer. */ - rt2800_process_rxwi(entry->skb, rxdesc); + rt2800_process_rxwi(entry, rxdesc); /* * Set RX IDX in register to inform hardware that we have handled diff --git a/drivers/net/wireless/rt2x00/rt2800usb.c b/drivers/net/wireless/rt2x00/rt2800usb.c index 4f85f7b42441..f2cd37e5aea8 100644 --- a/drivers/net/wireless/rt2x00/rt2800usb.c +++ b/drivers/net/wireless/rt2x00/rt2800usb.c @@ -563,7 +563,7 @@ static void rt2800usb_fill_rxdone(struct queue_entry *entry, /* * Process the RXWI structure. */ - rt2800_process_rxwi(entry->skb, rxdesc); + rt2800_process_rxwi(entry, rxdesc); } /* |