From: Christian Lamparter <chunkeey@googlemail.com>
Date: Thu, 22 Jul 2010 18:07:37 +0000 (+0200)
Subject: carl9170 firmware: introduce per-rate ER Protection setting
X-Git-Tag: 1.7.2~4
X-Git-Url: https://jxself.org/git/?a=commitdiff_plain;h=798526270a854de0aa9c8aca61f04a3136703b55;p=carl9170fw.git

carl9170 firmware: introduce per-rate ER Protection setting

Previously, the firmware has applied (or rather has stuck)
with the ERP settings of the first rate for all retry rates.
This is now history and the driver can choose between
different ERP settings for each individual retry rate.

Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
---

diff --git a/carlfw/src/wlan.c b/carlfw/src/wlan.c
index aaff3ee..6278b58 100644
--- a/carlfw/src/wlan.c
+++ b/carlfw/src/wlan.c
@@ -181,7 +181,7 @@ static void wlan_tx_complete(struct carl9170_tx_superframe *super,
 static bool wlan_tx_consume_retry(struct carl9170_tx_superframe *super)
 {
 	/* check if this was the last possible retry with this rate */
-	if (unlikely(super->s.cnt >= super->s.tries[super->s.rix])) {
+	if (unlikely(super->s.cnt >= super->s.ri[super->s.rix].tries)) {
 		/* end of the road - indicate tx failure */
 		if (unlikely(super->s.rix == CARL9170_TX_MAX_RETRY_RATES))
 			return false;
@@ -196,6 +196,9 @@ static bool wlan_tx_consume_retry(struct carl9170_tx_superframe *super)
 		/* finally - mark the old rate as USED */
 		super->s.rix++;
 
+		/* update MAC flags */
+		super->f.hdr.mac.erp_prot = super->s.ri[super->s.rix].erp_prot;
+
 		/* reinitialize try counter */
 		super->s.cnt = 1;
 	} else {
@@ -467,7 +470,7 @@ static void wlan_send_buffered_ba(void)
 		sizeof(struct ar9170_tx_hwdesc) +
 		sizeof(struct ieee80211_ba);
 
-	baf->s.tries[0] = 3;
+	baf->s.ri[0].tries = 3;
 	baf->s.queue = 0;
 	baf->f.hdr.length = sizeof(struct ieee80211_ba) + FCS_LEN;
 
diff --git a/include/shared/wlan.h b/include/shared/wlan.h
index 35e2e4f..1fd3ab1 100644
--- a/include/shared/wlan.h
+++ b/include/shared/wlan.h
@@ -84,7 +84,7 @@
 /* these are either-or */
 #define	AR9170_TX_MAC_PROT_RTS			0x0001
 #define	AR9170_TX_MAC_PROT_CTS			0x0002
-#define	AR9170_TX_MAC_PROT_MASK			0x0003
+#define	AR9170_TX_MAC_PROT			0x0003
 
 #define	AR9170_TX_MAC_NO_ACK			0x0004
 /* if unset, MAC will only do SIFS space before frame */
@@ -229,6 +229,12 @@ struct ar9170_tx_hw_phy_control {
 	} __packed;
 } __packed;
 
+struct ar9170_tx_rate_info {
+	u8 tries:3;
+	u8 erp_prot:2;
+	u8 free:3; /* free for use (e.g.:RIFS/TXOP/AMPDU) */
+} __packed;
+
 struct carl9170_tx_superdesc {
 	__le16 len;
 	u8 rix;
@@ -244,7 +250,7 @@ struct carl9170_tx_superdesc {
 	u8 fill_in_tsf:1;
 	u8 cab:1;
 	u8 padding2;
-	u8 tries[CARL9170_TX_MAX_RATES];
+	struct ar9170_tx_rate_info ri[CARL9170_TX_MAX_RATES];
 	struct ar9170_tx_hw_phy_control rr[CARL9170_TX_MAX_RETRY_RATES];
 } __packed;
 
@@ -292,6 +298,11 @@ struct _ar9170_tx_hwdesc {
 #define	CARL9170_TX_SUPER_MISC_FILL_IN_TSF		0x40
 #define	CARL9170_TX_SUPER_MISC_CAB			0x80
 
+#define CARL9170_TX_SUPER_RI_TRIES			0x7
+#define CARL9170_TX_SUPER_RI_TRIES_S			0
+#define CARL9170_TX_SUPER_RI_ERP_PROT			0x18
+#define CARL9170_TX_SUPER_RI_ERP_PROT_S			3
+
 struct _carl9170_tx_superdesc {
 	__le16 len;
 	u8 rix;
@@ -300,7 +311,7 @@ struct _carl9170_tx_superdesc {
 	u8 ampdu_settings;
 	u8 misc;
 	u8 padding;
-	u8 tries[CARL9170_TX_MAX_RATES];
+	u8 ri[CARL9170_TX_MAX_RATES];
 	__le32 rr[CARL9170_TX_MAX_RETRY_RATES];
 } __packed;