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path: root/drivers/net/ethernet/chelsio/cxgb4/sge.c
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Diffstat (limited to 'drivers/net/ethernet/chelsio/cxgb4/sge.c')
-rw-r--r--drivers/net/ethernet/chelsio/cxgb4/sge.c18
1 files changed, 8 insertions, 10 deletions
diff --git a/drivers/net/ethernet/chelsio/cxgb4/sge.c b/drivers/net/ethernet/chelsio/cxgb4/sge.c
index e8e90ce3ae15..fab4c84a1da4 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/sge.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/sge.c
@@ -850,13 +850,14 @@ static void write_sgl(const struct sk_buff *skb, struct sge_txq *q,
*end = 0;
}
-/* This function copies 64 byte coalesced work request to
- * memory mapped BAR2 space(user space writes).
- * For coalesced WR SGE, fetches data from the FIFO instead of from Host.
+/* This function copies a tx_desc struct to memory mapped BAR2 space(user space
+ * writes). For coalesced WR SGE, fetches data from the FIFO instead of from
+ * Host.
*/
-static void cxgb_pio_copy(u64 __iomem *dst, u64 *src)
+static void cxgb_pio_copy(u64 __iomem *dst, struct tx_desc *desc)
{
- int count = 8;
+ int count = sizeof(*desc) / sizeof(u64);
+ u64 *src = (u64 *)desc;
while (count) {
writeq(*src, dst);
@@ -914,12 +915,9 @@ static inline void ring_tx_db(struct adapter *adap, struct sge_txq *q, int n)
int index = (q->pidx
? (q->pidx - 1)
: (q->size - 1));
- unsigned int *wr = (unsigned int *)&q->desc[index];
- cxgb_pio_copy((u64 __iomem *)
- (adap->bar2 + q->udb +
- SGE_UDB_WCDOORBELL),
- (u64 *)wr);
+ cxgb_pio_copy(adap->bar2 + q->udb + SGE_UDB_WCDOORBELL,
+ q->desc + index);
} else {
writel(val, adap->bar2 + q->udb + SGE_UDB_KDOORBELL);
}