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* [PATCH 2/2] wil6210: add HW write-back option in TX descriptor
@ 2013-06-20 12:45 Kirshenbaum Erez
  2013-06-20 14:00 ` Vladimir Kondratiev
  0 siblings, 1 reply; 3+ messages in thread
From: Kirshenbaum Erez @ 2013-06-20 12:45 UTC (permalink / raw)
  To: qca_vkondrat; +Cc: linux-wireless, Kirshenbaum Erez

Map BIT 9 in TX DMA DWARD 0 as HW write back option.
We must turn on this option in the last TX descriptor,
this is required for old HW compatability.
This option indicate to HW that WB is required for this descriptor.

Signed-off-by: Kirshenbaum Erez <erezk@wilocity.com>
---
 drivers/net/wireless/ath/wil6210/txrx.c | 2 +-
 drivers/net/wireless/ath/wil6210/txrx.h | 4 ++++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/ath/wil6210/txrx.c b/drivers/net/wireless/ath/wil6210/txrx.c
index b79ba10..c3e763c 100644
--- a/drivers/net/wireless/ath/wil6210/txrx.c
+++ b/drivers/net/wireless/ath/wil6210/txrx.c
@@ -709,7 +709,7 @@ static int wil_tx_vring(struct wil6210_priv *wil, struct vring *vring,
 	}
 	/* for the last seg only */
 	d->dma.d0 |= BIT(DMA_CFG_DESC_TX_0_CMD_EOP_POS);
-	d->dma.d0 |= BIT(9); /* BUG: undocumented bit */
+	d->dma.d0 |= BIT(DMA_CFG_DESC_TX_0_CMD_MARK_WB_POS);
 	d->dma.d0 |= BIT(DMA_CFG_DESC_TX_0_CMD_DMA_IT_POS);
 	*_d = *d;
 
diff --git a/drivers/net/wireless/ath/wil6210/txrx.h b/drivers/net/wireless/ath/wil6210/txrx.h
index 23c0781..859aea6 100644
--- a/drivers/net/wireless/ath/wil6210/txrx.h
+++ b/drivers/net/wireless/ath/wil6210/txrx.h
@@ -201,6 +201,10 @@ struct vring_tx_mac {
 #define DMA_CFG_DESC_TX_0_CMD_EOP_LEN 1
 #define DMA_CFG_DESC_TX_0_CMD_EOP_MSK 0x100
 
+#define DMA_CFG_DESC_TX_0_CMD_MARK_WB_POS 9
+#define DMA_CFG_DESC_TX_0_CMD_MARK_WB_LEN 1
+#define DMA_CFG_DESC_TX_0_CMD_MARK_WB_MSK 0x200
+
 #define DMA_CFG_DESC_TX_0_CMD_DMA_IT_POS 10
 #define DMA_CFG_DESC_TX_0_CMD_DMA_IT_LEN 1
 #define DMA_CFG_DESC_TX_0_CMD_DMA_IT_MSK 0x400
-- 
1.7.11.7


^ permalink raw reply related	[flat|nested] 3+ messages in thread
* [PATCH 0/2] wil6210: Tx path improvements
@ 2013-06-23  9:59 Vladimir Kondratiev
  2013-06-23  9:59 ` [PATCH 2/2] wil6210: add HW write-back option in TX descriptor Vladimir Kondratiev
  0 siblings, 1 reply; 3+ messages in thread
From: Vladimir Kondratiev @ 2013-06-23  9:59 UTC (permalink / raw)
  To: John W . Linville
  Cc: Kirshenbaum Erez, Vladimir Kondratiev, Johannes Berg,
	linux-wireless, Luis R . Rodriguez, Jouni Malinen

Couple of patches from Erez, addressing Tx path

Kirshenbaum Erez (2):
  wil6210: set vring index for all descriptors
  wil6210: add HW write-back option in TX descriptor

 drivers/net/wireless/ath/wil6210/txrx.c | 12 ++++++------
 drivers/net/wireless/ath/wil6210/txrx.h |  4 ++++
 2 files changed, 10 insertions(+), 6 deletions(-)

-- 
1.8.1.2


^ permalink raw reply	[flat|nested] 3+ messages in thread
end of thread, other threads:[~2013-06-23 10:00 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
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2013-06-20 12:45 [PATCH 2/2] wil6210: add HW write-back option in TX descriptor Kirshenbaum Erez
2013-06-20 14:00 ` Vladimir Kondratiev
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2013-06-23  9:59 [PATCH 0/2] wil6210: Tx path improvements Vladimir Kondratiev
2013-06-23  9:59 ` [PATCH 2/2] wil6210: add HW write-back option in TX descriptor Vladimir Kondratiev

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