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net: fec: parser max queue number from dt file

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By default, the tx/rx queue number is 1, user can config the queue number
at DTS file like this:
	fsl,num-tx-queues=<3>;
	fsl,num-rx-queues=<3>

Since i.MX6SX enet-AVB IP support multi queues, so use multi queues
interface to allocate and set up an Ethernet device.

Signed-off-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Frank Li <Frank.Li@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Fugang Duan 2014-09-13 05:00:49 +08:00 committed by David S. Miller
parent 4d494cdc92
commit 9fc095f136
2 changed files with 47 additions and 1 deletions
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2
drivers/net/ethernet/freescale/fec.h
View File

@ -356,6 +356,8 @@ struct fec_enet_private {
bool ptp_clk_on;
struct mutex ptp_clk_mutex;
unsigned int num_tx_queues;
unsigned int num_rx_queues;
/* The saved address of a sent-in-place packet/buffer, for skfree(). */
struct fec_enet_priv_tx_q *tx_queue[FEC_ENET_MAX_TX_QS];

46
drivers/net/ethernet/freescale/fec_main.c
View File

@ -2709,6 +2709,42 @@ static void fec_reset_phy(struct platform_device *pdev)
}
#endif /* CONFIG_OF */
static void
fec_enet_get_queue_num(struct platform_device *pdev, int *num_tx, int *num_rx)
{
struct device_node *np = pdev->dev.of_node;
int err;
*num_tx = *num_rx = 1;
if (!np || !of_device_is_available(np))
return;
/* parse the num of tx and rx queues */
err = of_property_read_u32(np, "fsl,num-tx-queues", num_tx);
err |= of_property_read_u32(np, "fsl,num-rx-queues", num_rx);
if (err) {
*num_tx = 1;
*num_rx = 1;
return;
}
if (*num_tx < 1 || *num_tx > FEC_ENET_MAX_TX_QS) {
dev_err(&pdev->dev, "Invalidate num_tx(=%d), fail back to 1\n",
*num_tx);
*num_tx = 1;
return;
}
if (*num_rx < 1 || *num_rx > FEC_ENET_MAX_RX_QS) {
dev_err(&pdev->dev, "Invalidate num_rx(=%d), fail back to 1\n",
*num_rx);
*num_rx = 1;
return;
}
}
static int
fec_probe(struct platform_device *pdev)
{
@ -2720,13 +2756,18 @@ fec_probe(struct platform_device *pdev)
const struct of_device_id *of_id;
static int dev_id;
struct device_node *np = pdev->dev.of_node, *phy_node;
int num_tx_qs = 1;
int num_rx_qs = 1;
of_id = of_match_device(fec_dt_ids, &pdev->dev);
if (of_id)
pdev->id_entry = of_id->data;
fec_enet_get_queue_num(pdev, &num_tx_qs, &num_rx_qs);
/* Init network device */
ndev = alloc_etherdev(sizeof(struct fec_enet_private));
ndev = alloc_etherdev_mqs(sizeof(struct fec_enet_private),
num_tx_qs, num_rx_qs);
if (!ndev)
return -ENOMEM;
@ -2735,6 +2776,9 @@ fec_probe(struct platform_device *pdev)
/* setup board info structure */
fep = netdev_priv(ndev);
fep->num_rx_queues = num_rx_qs;
fep->num_tx_queues = num_tx_qs;
#if !defined(CONFIG_M5272)
/* default enable pause frame auto negotiation */
if (pdev->id_entry &&