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Date: Fri, 18 Jul 2014 11:52:32 +0200
From: Neil Armstrong <superna9999@...il.com>
To: Nicolas Ferre <nicolas.ferre@...el.com>, netdev@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH 1/2] net: macb: Separate rx and tx ring init function
A single method is called to initialize the TX and RX
rings. Separate the methods into distinct ones for
MACB and GEM context.
Signed-off-by: Neil Armstrong <narmstrong@...tion.com>
---
drivers/net/ethernet/cadence/macb.c | 33 ++++++++++++++++++++++++---------
drivers/net/ethernet/cadence/macb.h | 3 ++-
2 files changed, 26 insertions(+), 10 deletions(-)
diff --git a/drivers/net/ethernet/cadence/macb.c b/drivers/net/ethernet/cadence/macb.c
index e9daa07..20ad483 100644
--- a/drivers/net/ethernet/cadence/macb.c
+++ b/drivers/net/ethernet/cadence/macb.c
@@ -1219,7 +1219,14 @@ out_err:
return -ENOMEM;
}
-static void gem_init_rings(struct macb *bp)
+static void gem_init_rx_rings(struct macb *bp)
+{
+ bp->rx_tail = bp->rx_prepared_head = 0;
+
+ gem_rx_refill(bp);
+}
+
+static void gem_init_tx_rings(struct macb *bp)
{
int i;
@@ -1229,12 +1236,10 @@ static void gem_init_rings(struct macb *bp)
}
bp->tx_ring[TX_RING_SIZE - 1].ctrl |= MACB_BIT(TX_WRAP);
- bp->rx_tail = bp->rx_prepared_head = bp->tx_head = bp->tx_tail = 0;
-
- gem_rx_refill(bp);
+ bp->tx_head = bp->tx_tail = 0;
}
-static void macb_init_rings(struct macb *bp)
+static void macb_init_rx_rings(struct macb *bp)
{
int i;
dma_addr_t addr;
@@ -1247,13 +1252,20 @@ static void macb_init_rings(struct macb *bp)
}
bp->rx_ring[RX_RING_SIZE - 1].addr |= MACB_BIT(RX_WRAP);
+ bp->rx_tail = 0;
+}
+
+static void macb_init_tx_rings(struct macb *bp)
+{
+ int i;
+
for (i = 0; i < TX_RING_SIZE; i++) {
bp->tx_ring[i].addr = 0;
bp->tx_ring[i].ctrl = MACB_BIT(TX_USED);
}
bp->tx_ring[TX_RING_SIZE - 1].ctrl |= MACB_BIT(TX_WRAP);
- bp->rx_tail = bp->tx_head = bp->tx_tail = 0;
+ bp->tx_head = bp->tx_tail = 0;
}
static void macb_reset_hw(struct macb *bp)
@@ -1554,7 +1566,8 @@ static int macb_open(struct net_device *dev)
napi_enable(&bp->napi);
- bp->macbgem_ops.mog_init_rings(bp);
+ bp->macbgem_ops.mog_init_rx_rings(bp);
+ bp->macbgem_ops.mog_init_tx_rings(bp);
macb_init_hw(bp);
/* schedule a link state check */
@@ -1901,12 +1914,14 @@ static int __init macb_probe(struct platform_device *pdev)
if (macb_is_gem(bp)) {
bp->macbgem_ops.mog_alloc_rx_buffers = gem_alloc_rx_buffers;
bp->macbgem_ops.mog_free_rx_buffers = gem_free_rx_buffers;
- bp->macbgem_ops.mog_init_rings = gem_init_rings;
+ bp->macbgem_ops.mog_init_rx_rings = gem_init_rx_rings;
+ bp->macbgem_ops.mog_init_tx_rings = gem_init_tx_rings;
bp->macbgem_ops.mog_rx = gem_rx;
} else {
bp->macbgem_ops.mog_alloc_rx_buffers = macb_alloc_rx_buffers;
bp->macbgem_ops.mog_free_rx_buffers = macb_free_rx_buffers;
- bp->macbgem_ops.mog_init_rings = macb_init_rings;
+ bp->macbgem_ops.mog_init_rx_rings = macb_init_rx_rings;
+ bp->macbgem_ops.mog_init_tx_rings = macb_init_tx_rings;
bp->macbgem_ops.mog_rx = macb_rx;
}
diff --git a/drivers/net/ethernet/cadence/macb.h b/drivers/net/ethernet/cadence/macb.h
index 51c0244..8016d08 100644
--- a/drivers/net/ethernet/cadence/macb.h
+++ b/drivers/net/ethernet/cadence/macb.h
@@ -550,7 +550,8 @@ struct macb;
struct macb_or_gem_ops {
int (*mog_alloc_rx_buffers)(struct macb *bp);
void (*mog_free_rx_buffers)(struct macb *bp);
- void (*mog_init_rings)(struct macb *bp);
+ void (*mog_init_rx_rings)(struct macb *bp);
+ void (*mog_init_tx_rings)(struct macb *bp);
int (*mog_rx)(struct macb *bp, int budget);
};
--
1.7.0.4
--
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