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net: altera_tse: factor out stop mac func

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Factor out the stop mac function to prepare msgdma support.

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Reviewed-by: Marek Vasut <marex@denx.de>
This commit is contained in:
Thomas Chou 2015-11-08 10:57:05 +08:00
parent de99a17c9a
commit acd71c320f
1 changed files with 21 additions and 15 deletions
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36
drivers/net/altera_tse.c
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@ -223,16 +223,33 @@ static int altera_tse_free_pkt(struct udevice *dev, uchar *packet,
return 0;
}
static void altera_tse_stop_mac(struct altera_tse_priv *priv)
{
struct alt_tse_mac *mac_dev = priv->mac_dev;
u32 status;
ulong ctime;
/* reset the mac */
writel(ALTERA_TSE_CMD_SW_RESET_MSK, &mac_dev->command_config);
ctime = get_timer(0);
while (1) {
status = readl(&mac_dev->command_config);
if (!(status & ALTERA_TSE_CMD_SW_RESET_MSK))
break;
if (get_timer(ctime) > ALT_TSE_SW_RESET_TIMEOUT) {
debug("Reset mac timeout\n");
break;
}
}
}
static void altera_tse_stop(struct udevice *dev)
{
struct altera_tse_priv *priv = dev_get_priv(dev);
struct alt_tse_mac *mac_dev = priv->mac_dev;
struct alt_sgdma_registers *rx_sgdma = priv->sgdma_rx;
struct alt_sgdma_registers *tx_sgdma = priv->sgdma_tx;
struct alt_sgdma_descriptor *rx_desc = priv->rx_desc;
u32 status;
int ret;
ulong ctime;
/* clear rx desc & wait for sgdma to complete */
rx_desc->descriptor_control = 0;
@ -248,18 +265,7 @@ static void altera_tse_stop(struct udevice *dev)
writel(ALT_SGDMA_CONTROL_SOFTWARERESET_MSK,
&tx_sgdma->control);
/* reset the mac */
writel(ALTERA_TSE_CMD_SW_RESET_MSK, &mac_dev->command_config);
ctime = get_timer(0);
while (1) {
status = readl(&mac_dev->command_config);
if (!(status & ALTERA_TSE_CMD_SW_RESET_MSK))
break;
if (get_timer(ctime) > ALT_TSE_SW_RESET_TIMEOUT) {
debug("Reset mac timeout\n");
break;
}
}
altera_tse_stop_mac(priv);
}
static int tse_mdio_read(struct mii_dev *bus, int addr, int devad, int reg)