[PATCH 0/2] rt2x00 update

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* [PATCH 0/2] rt2x00 update
@ 2008-08-06 14:17 Ivo van Doorn
  2008-08-06 14:18 ` [PATCH 1/2] rt2x00: Block all unsupported modes Ivo van Doorn
  0 siblings, 1 reply; 3+ messages in thread
From: Ivo van Doorn @ 2008-08-06 14:17 UTC (permalink / raw)
  To: John W. Linville; +Cc: linux-wireless, rt2400-devel

Hi John,

2 small patches for on top of the pull request from a few days ago,
minor bugfix and a small optimization which is mostly important
for rt2800 later on but is usable for rt61pci and rt73usb as well.

Ivo

^ permalink raw reply	[flat|nested] 3+ messages in thread

* [PATCH 1/2] rt2x00: Block all unsupported modes
  2008-08-06 14:17 [PATCH 0/2] rt2x00 update Ivo van Doorn
@ 2008-08-06 14:18 ` Ivo van Doorn
  2008-08-06 14:22   ` [PATCH 2/2] rt2x00: Move lna_gain calculation to config() callback Ivo van Doorn
  0 siblings, 1 reply; 3+ messages in thread
From: Ivo van Doorn @ 2008-08-06 14:18 UTC (permalink / raw)
  To: John W. Linville; +Cc: linux-wireless, rt2400-devel

It was possible for unsupported operating modes
to be accepted by the add_interface callback function.
This patch will block those modes until proper support
has been implemented for them.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
---
 drivers/net/wireless/rt2x00/rt2x00mac.c |   54 +++++++++++++++++++++----------
 1 files changed, 37 insertions(+), 17 deletions(-)

diff --git a/drivers/net/wireless/rt2x00/rt2x00mac.c b/drivers/net/wireless/rt2x00/rt2x00mac.c
index bb9d489..3af4273 100644
--- a/drivers/net/wireless/rt2x00/rt2x00mac.c
+++ b/drivers/net/wireless/rt2x00/rt2x00mac.c
@@ -210,23 +210,43 @@ int rt2x00mac_add_interface(struct ieee80211_hw *hw,
 	    !test_bit(DEVICE_STARTED, &rt2x00dev->flags))
 		return -ENODEV;
 
-	/*
-	 * We don't support mixed combinations of sta and ap virtual
-	 * interfaces. We can only add this interface when the rival
-	 * interface count is 0.
-	 */
-	if ((conf->type == IEEE80211_IF_TYPE_AP && rt2x00dev->intf_sta_count) ||
-	    (conf->type != IEEE80211_IF_TYPE_AP && rt2x00dev->intf_ap_count))
-		return -ENOBUFS;
-
-	/*
-	 * Check if we exceeded the maximum amount of supported interfaces.
-	 */
-	if ((conf->type == IEEE80211_IF_TYPE_AP &&
-	     rt2x00dev->intf_ap_count >= rt2x00dev->ops->max_ap_intf) ||
-	    (conf->type != IEEE80211_IF_TYPE_AP &&
-	     rt2x00dev->intf_sta_count >= rt2x00dev->ops->max_sta_intf))
-		return -ENOBUFS;
+	switch (conf->type) {
+	case IEEE80211_IF_TYPE_AP:
+		/*
+		 * We don't support mixed combinations of
+		 * sta and ap interfaces.
+		 */
+		if (rt2x00dev->intf_sta_count)
+			return -ENOBUFS;
+
+		/*
+		 * Check if we exceeded the maximum amount
+		 * of supported interfaces.
+		 */
+		if (rt2x00dev->intf_ap_count >= rt2x00dev->ops->max_ap_intf)
+			return -ENOBUFS;
+
+		break;
+	case IEEE80211_IF_TYPE_STA:
+	case IEEE80211_IF_TYPE_IBSS:
+		/*
+		 * We don't support mixed combinations of
+		 * sta and ap interfaces.
+		 */
+		if (rt2x00dev->intf_ap_count)
+			return -ENOBUFS;
+
+		/*
+		 * Check if we exceeded the maximum amount
+		 * of supported interfaces.
+		 */
+		if (rt2x00dev->intf_sta_count >= rt2x00dev->ops->max_sta_intf)
+			return -ENOBUFS;
+
+		break;
+	default:
+		return -EINVAL;
+	}
 
 	/*
 	 * Loop through all beacon queues to find a free
-- 
1.5.6.1


^ permalink raw reply related	[flat|nested] 3+ messages in thread

* [PATCH 2/2] rt2x00: Move lna_gain calculation to config() callback
  2008-08-06 14:18 ` [PATCH 1/2] rt2x00: Block all unsupported modes Ivo van Doorn
@ 2008-08-06 14:22   ` Ivo van Doorn
  0 siblings, 0 replies; 3+ messages in thread
From: Ivo van Doorn @ 2008-08-06 14:22 UTC (permalink / raw)
  To: John W. Linville; +Cc: linux-wireless, rt2400-devel

We can optimize lna calculation in IRQ context by
calculating most of the value during the config() callback
when most of the value is actually influenced.

This will be required later by rt2800pci and rt2800usb as
well, since they need the lna_gain value during config().

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
---
 drivers/net/wireless/rt2x00/rt2x00.h  |    5 +++
 drivers/net/wireless/rt2x00/rt61pci.c |   48 +++++++++++++++++++++-----------
 drivers/net/wireless/rt2x00/rt73usb.c |   41 ++++++++++++++++++---------
 3 files changed, 63 insertions(+), 31 deletions(-)

diff --git a/drivers/net/wireless/rt2x00/rt2x00.h b/drivers/net/wireless/rt2x00/rt2x00.h
index 7476a4e..6a14b60 100644
--- a/drivers/net/wireless/rt2x00/rt2x00.h
+++ b/drivers/net/wireless/rt2x00/rt2x00.h
@@ -804,6 +804,11 @@ struct rt2x00_dev {
 	u32 *rf;
 
 	/*
+	 * LNA gain
+	 */
+	short lna_gain;
+
+	/*
 	 * USB Max frame size (for rt2500usb & rt73usb).
 	 */
 	u16 usb_maxpacket;
diff --git a/drivers/net/wireless/rt2x00/rt61pci.c b/drivers/net/wireless/rt2x00/rt61pci.c
index 87012f8..0fcc456 100644
--- a/drivers/net/wireless/rt2x00/rt61pci.c
+++ b/drivers/net/wireless/rt2x00/rt61pci.c
@@ -638,6 +638,30 @@ static void rt61pci_config_erp(struct rt2x00_dev *rt2x00dev,
 	rt2x00pci_register_write(rt2x00dev, TXRX_CSR4, reg);
 }
 
+
+static void rt61pci_config_lna_gain(struct rt2x00_dev *rt2x00dev,
+				    struct rt2x00lib_conf *libconf)
+{
+	u16 eeprom;
+	short lna_gain = 0;
+
+	if (libconf->band == IEEE80211_BAND_2GHZ) {
+		if (test_bit(CONFIG_EXTERNAL_LNA_BG, &rt2x00dev->flags))
+			lna_gain += 14;
+
+		rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_OFFSET_BG, &eeprom);
+		lna_gain -= rt2x00_get_field16(eeprom, EEPROM_RSSI_OFFSET_BG_1);
+	} else {
+		if (test_bit(CONFIG_EXTERNAL_LNA_A, &rt2x00dev->flags))
+			lna_gain += 14;
+
+		rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_OFFSET_A, &eeprom);
+		lna_gain -= rt2x00_get_field16(eeprom, EEPROM_RSSI_OFFSET_A_1);
+	}
+
+	rt2x00dev->lna_gain = lna_gain;
+}
+
 static void rt61pci_config_phymode(struct rt2x00_dev *rt2x00dev,
 				   const int basic_rate_mask)
 {
@@ -956,6 +980,9 @@ static void rt61pci_config(struct rt2x00_dev *rt2x00dev,
 			   struct rt2x00lib_conf *libconf,
 			   const unsigned int flags)
 {
+	/* Always recalculate LNA gain before changing configuration */
+	rt61pci_config_lna_gain(rt2x00dev, libconf);
+
 	if (flags & CONFIG_UPDATE_PHYMODE)
 		rt61pci_config_phymode(rt2x00dev, libconf->basic_rates);
 	if (flags & CONFIG_UPDATE_CHANNEL)
@@ -1883,40 +1910,27 @@ static void rt61pci_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
  */
 static int rt61pci_agc_to_rssi(struct rt2x00_dev *rt2x00dev, int rxd_w1)
 {
-	u16 eeprom;
-	u8 offset;
+	u8 offset = rt2x00dev->lna_gain;
 	u8 lna;
 
 	lna = rt2x00_get_field32(rxd_w1, RXD_W1_RSSI_LNA);
 	switch (lna) {
 	case 3:
-		offset = 90;
+		offset += 90;
 		break;
 	case 2:
-		offset = 74;
+		offset += 74;
 		break;
 	case 1:
-		offset = 64;
+		offset += 64;
 		break;
 	default:
 		return 0;
 	}
 
 	if (rt2x00dev->rx_status.band == IEEE80211_BAND_5GHZ) {
-		if (test_bit(CONFIG_EXTERNAL_LNA_A, &rt2x00dev->flags))
-			offset += 14;
-
 		if (lna == 3 || lna == 2)
 			offset += 10;
-
-		rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_OFFSET_A, &eeprom);
-		offset -= rt2x00_get_field16(eeprom, EEPROM_RSSI_OFFSET_A_1);
-	} else {
-		if (test_bit(CONFIG_EXTERNAL_LNA_BG, &rt2x00dev->flags))
-			offset += 14;
-
-		rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_OFFSET_BG, &eeprom);
-		offset -= rt2x00_get_field16(eeprom, EEPROM_RSSI_OFFSET_BG_1);
 	}
 
 	return rt2x00_get_field32(rxd_w1, RXD_W1_RSSI_AGC) * 2 - offset;
diff --git a/drivers/net/wireless/rt2x00/rt73usb.c b/drivers/net/wireless/rt2x00/rt73usb.c
index 1bd6b3f..4f2eb90 100644
--- a/drivers/net/wireless/rt2x00/rt73usb.c
+++ b/drivers/net/wireless/rt2x00/rt73usb.c
@@ -664,6 +664,26 @@ static void rt73usb_config_erp(struct rt2x00_dev *rt2x00dev,
 	rt73usb_register_write(rt2x00dev, TXRX_CSR4, reg);
 }
 
+static void rt73usb_config_lna_gain(struct rt2x00_dev *rt2x00dev,
+				    struct rt2x00lib_conf *libconf)
+{
+	u16 eeprom;
+	short lna_gain = 0;
+
+	if (libconf->band == IEEE80211_BAND_2GHZ) {
+		if (test_bit(CONFIG_EXTERNAL_LNA_BG, &rt2x00dev->flags))
+			lna_gain += 14;
+
+		rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_OFFSET_BG, &eeprom);
+		lna_gain -= rt2x00_get_field16(eeprom, EEPROM_RSSI_OFFSET_BG_1);
+	} else {
+		rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_OFFSET_A, &eeprom);
+		lna_gain -= rt2x00_get_field16(eeprom, EEPROM_RSSI_OFFSET_A_1);
+	}
+
+	rt2x00dev->lna_gain = lna_gain;
+}
+
 static void rt73usb_config_phymode(struct rt2x00_dev *rt2x00dev,
 				   const int basic_rate_mask)
 {
@@ -918,6 +938,9 @@ static void rt73usb_config(struct rt2x00_dev *rt2x00dev,
 			   struct rt2x00lib_conf *libconf,
 			   const unsigned int flags)
 {
+	/* Always recalculate LNA gain before changing configuration */
+	rt73usb_config_lna_gain(rt2x00dev, libconf);
+
 	if (flags & CONFIG_UPDATE_PHYMODE)
 		rt73usb_config_phymode(rt2x00dev, libconf->basic_rates);
 	if (flags & CONFIG_UPDATE_CHANNEL)
@@ -1644,20 +1667,19 @@ static void rt73usb_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
  */
 static int rt73usb_agc_to_rssi(struct rt2x00_dev *rt2x00dev, int rxd_w1)
 {
-	u16 eeprom;
-	u8 offset;
+	u8 offset = rt2x00dev->lna_gain;
 	u8 lna;
 
 	lna = rt2x00_get_field32(rxd_w1, RXD_W1_RSSI_LNA);
 	switch (lna) {
 	case 3:
-		offset = 90;
+		offset += 90;
 		break;
 	case 2:
-		offset = 74;
+		offset += 74;
 		break;
 	case 1:
-		offset = 64;
+		offset += 64;
 		break;
 	default:
 		return 0;
@@ -1673,15 +1695,6 @@ static int rt73usb_agc_to_rssi(struct rt2x00_dev *rt2x00dev, int rxd_w1)
 			else if (lna == 2)
 				offset += 8;
 		}
-
-		rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_OFFSET_A, &eeprom);
-		offset -= rt2x00_get_field16(eeprom, EEPROM_RSSI_OFFSET_A_1);
-	} else {
-		if (test_bit(CONFIG_EXTERNAL_LNA_BG, &rt2x00dev->flags))
-			offset += 14;
-
-		rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_OFFSET_BG, &eeprom);
-		offset -= rt2x00_get_field16(eeprom, EEPROM_RSSI_OFFSET_BG_1);
 	}
 
 	return rt2x00_get_field32(rxd_w1, RXD_W1_RSSI_AGC) * 2 - offset;
-- 
1.5.6.1


^ permalink raw reply related	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2008-08-06 13:59 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
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2008-08-06 14:17 [PATCH 0/2] rt2x00 update Ivo van Doorn
2008-08-06 14:18 ` [PATCH 1/2] rt2x00: Block all unsupported modes Ivo van Doorn
2008-08-06 14:22   ` [PATCH 2/2] rt2x00: Move lna_gain calculation to config() callback Ivo van Doorn

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