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authorVasanthakumar Thiagarajan <vasanth@atheros.com>2010-04-15 17:39:35 -0400
committerJohn W. Linville <linville@tuxdriver.com>2010-04-16 15:43:47 -0400
commiteb8232535bbeaf51f7c4826265ad96bf966829f3 (patch)
treec1dce435fca304a95bd57f7f592cb04ef5776563 /drivers/net/wireless/ath/ath9k/ar9003_mac.c
parent5088c2f1a2475546d9a79b515bde6d65b8681e51 (diff)
ath9k_hw: Compute pointer checksum over the link descriptor
Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com> Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/ar9003_mac.c')
-rw-r--r--drivers/net/wireless/ath/ath9k/ar9003_mac.c36
1 files changed, 21 insertions, 15 deletions
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_mac.c b/drivers/net/wireless/ath/ath9k/ar9003_mac.c
index 1a8c1ba538b..582c8805066 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_mac.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_mac.c
@@ -21,14 +21,33 @@ static void ar9003_hw_rx_enable(struct ath_hw *hw)
REG_WRITE(hw, AR_CR, 0);
}
+static u16 ar9003_calc_ptr_chksum(struct ar9003_txc *ads)
+{
+ int checksum;
+
+ checksum = ads->info + ads->link
+ + ads->data0 + ads->ctl3
+ + ads->data1 + ads->ctl5
+ + ads->data2 + ads->ctl7
+ + ads->data3 + ads->ctl9;
+
+ return ((checksum & 0xffff) + (checksum >> 16)) & AR_TxPtrChkSum;
+}
+
static void ar9003_hw_set_desc_link(void *ds, u32 ds_link)
{
- ((struct ar9003_txc *) ds)->link = ds_link;
+ struct ar9003_txc *ads = ds;
+
+ ads->link = ds_link;
+ ads->ctl10 &= ~AR_TxPtrChkSum;
+ ads->ctl10 |= ar9003_calc_ptr_chksum(ads);
}
static void ar9003_hw_get_desc_link(void *ds, u32 **ds_link)
{
- *ds_link = &((struct ar9003_txc *) ds)->link;
+ struct ar9003_txc *ads = ds;
+
+ *ds_link = &ads->link;
}
static bool ar9003_hw_get_isr(struct ath_hw *ah, enum ath9k_int *masked)
@@ -168,19 +187,6 @@ static bool ar9003_hw_get_isr(struct ath_hw *ah, enum ath9k_int *masked)
return true;
}
-static u16 ar9003_calc_ptr_chksum(struct ar9003_txc *ads)
-{
- int checksum;
-
- checksum = ads->info + ads->link
- + ads->data0 + ads->ctl3
- + ads->data1 + ads->ctl5
- + ads->data2 + ads->ctl7
- + ads->data3 + ads->ctl9;
-
- return ((checksum & 0xffff) + (checksum >> 16)) & AR_TxPtrChkSum;
-}
-
static void ar9003_hw_fill_txdesc(struct ath_hw *ah, void *ds, u32 seglen,
bool is_firstseg, bool is_lastseg,
const void *ds0, dma_addr_t buf_addr,