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net: rtl8139: Split out common and non-DM functions

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Split the driver into common and non-DM functionality, so that the
DM support can later re-use the common code, while we retain the
non-DM code until all the platforms are converted.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Joe Hershberger <joe.hershberger@ni.com>
This commit is contained in:
Marek Vasut 2020-05-09 22:34:41 +02:00 committed by Tom Rini
parent 26f59c28bd
commit 6a4a5c194d
1 changed files with 68 additions and 24 deletions
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92
drivers/net/rtl8139.c
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@ -193,6 +193,7 @@
struct rtl8139_priv {
struct eth_device dev;
unsigned int rxstatus;
unsigned int cur_rx;
unsigned int cur_tx;
unsigned long ioaddr;
@ -360,9 +361,9 @@ static void rtl8139_reset(struct rtl8139_priv *priv)
outw(0, priv->ioaddr + RTL_REG_INTRMASK);
}
static int rtl8139_send(struct eth_device *dev, void *packet, int length)
static int rtl8139_send_common(struct rtl8139_priv *priv,
void *packet, int length)
{
struct rtl8139_priv *priv = container_of(dev, struct rtl8139_priv, dev);
unsigned int len = length;
unsigned long txstatus;
unsigned int status;
@ -422,25 +423,24 @@ static int rtl8139_send(struct eth_device *dev, void *packet, int length)
return length;
}
static int rtl8139_recv(struct eth_device *dev)
static int rtl8139_recv_common(struct rtl8139_priv *priv, unsigned char *rxdata,
uchar **packetp)
{
struct rtl8139_priv *priv = container_of(dev, struct rtl8139_priv, dev);
const unsigned int rxstat = RTL_REG_INTRSTATUS_RXFIFOOVER |
RTL_REG_INTRSTATUS_RXOVERFLOW |
RTL_REG_INTRSTATUS_RXOK;
unsigned int rx_size, rx_status;
unsigned int ring_offs;
unsigned int status;
int length = 0;
if (inb(priv->ioaddr + RTL_REG_CHIPCMD) & RTL_REG_CHIPCMD_RXBUFEMPTY)
return 0;
status = inw(priv->ioaddr + RTL_REG_INTRSTATUS);
priv->rxstatus = inw(priv->ioaddr + RTL_REG_INTRSTATUS);
/* See below for the rest of the interrupt acknowledges. */
outw(status & ~rxstat, priv->ioaddr + RTL_REG_INTRSTATUS);
outw(priv->rxstatus & ~rxstat, priv->ioaddr + RTL_REG_INTRSTATUS);
debug_cond(DEBUG_RX, "%s: int %hX ", __func__, status);
debug_cond(DEBUG_RX, "%s: int %hX ", __func__, priv->rxstatus);
ring_offs = priv->cur_rx % RX_BUF_LEN;
/* ring_offs is guaranteed being 4-byte aligned */
@ -462,20 +462,30 @@ static int rtl8139_recv(struct eth_device *dev)
/* Received a good packet */
length = rx_size - 4; /* no one cares about the FCS */
if (ring_offs + 4 + rx_size - 4 > RX_BUF_LEN) {
unsigned char rxdata[RX_BUF_LEN];
int semi_count = RX_BUF_LEN - ring_offs - 4;
memcpy(rxdata, rx_ring + ring_offs + 4, semi_count);
memcpy(&rxdata[semi_count], rx_ring,
rx_size - 4 - semi_count);
net_process_received_packet(rxdata, length);
*packetp = rxdata;
debug_cond(DEBUG_RX, "rx packet %d+%d bytes",
semi_count, rx_size - 4 - semi_count);
} else {
net_process_received_packet(rx_ring + ring_offs + 4, length);
*packetp = rx_ring + ring_offs + 4;
debug_cond(DEBUG_RX, "rx packet %d bytes", rx_size - 4);
}
return length;
}
static int rtl8139_free_pkt_common(struct rtl8139_priv *priv, unsigned int len)
{
const unsigned int rxstat = RTL_REG_INTRSTATUS_RXFIFOOVER |
RTL_REG_INTRSTATUS_RXOVERFLOW |
RTL_REG_INTRSTATUS_RXOK;
unsigned int rx_size = len + 4;
flush_cache((unsigned long)rx_ring, RX_BUF_LEN);
priv->cur_rx = ROUND(priv->cur_rx + rx_size + 4, 4);
@ -485,14 +495,13 @@ static int rtl8139_recv(struct eth_device *dev)
* Rx overflow situations. The document itself contains basically
* no usable information, except for a few exception handling rules.
*/
outw(status & rxstat, priv->ioaddr + RTL_REG_INTRSTATUS);
outw(priv->rxstatus & rxstat, priv->ioaddr + RTL_REG_INTRSTATUS);
return length;
return 0;
}
static int rtl8139_init(struct eth_device *dev, bd_t *bis)
static int rtl8139_init_common(struct rtl8139_priv *priv)
{
struct rtl8139_priv *priv = container_of(dev, struct rtl8139_priv, dev);
unsigned short *ap = (unsigned short *)priv->enetaddr;
int addr_len, i;
u8 reg;
@ -518,19 +527,11 @@ static int rtl8139_init(struct eth_device *dev, bd_t *bis)
return 0;
}
static void rtl8139_stop(struct eth_device *dev)
static void rtl8139_stop_common(struct rtl8139_priv *priv)
{
struct rtl8139_priv *priv = container_of(dev, struct rtl8139_priv, dev);
rtl8139_hw_reset(priv);
}
static int rtl8139_bcast_addr(struct eth_device *dev, const u8 *bcast_mac,
int join)
{
return 0;
}
static void rtl8139_name(char *str, int card_number)
{
sprintf(str, "RTL8139#%u", card_number);
@ -542,6 +543,49 @@ static struct pci_device_id supported[] = {
{ }
};
static int rtl8139_bcast_addr(struct eth_device *dev, const u8 *bcast_mac,
int join)
{
return 0;
}
static int rtl8139_init(struct eth_device *dev, bd_t *bis)
{
struct rtl8139_priv *priv = container_of(dev, struct rtl8139_priv, dev);
return rtl8139_init_common(priv);
}
static void rtl8139_stop(struct eth_device *dev)
{
struct rtl8139_priv *priv = container_of(dev, struct rtl8139_priv, dev);
return rtl8139_stop_common(priv);
}
static int rtl8139_send(struct eth_device *dev, void *packet, int length)
{
struct rtl8139_priv *priv = container_of(dev, struct rtl8139_priv, dev);
return rtl8139_send_common(priv, packet, length);
}
static int rtl8139_recv(struct eth_device *dev)
{
struct rtl8139_priv *priv = container_of(dev, struct rtl8139_priv, dev);
unsigned char rxdata[RX_BUF_LEN];
uchar *packet;
int ret;
ret = rtl8139_recv_common(priv, rxdata, &packet);
if (ret) {
net_process_received_packet(packet, ret);
rtl8139_free_pkt_common(priv, ret);
}
return ret;
}
int rtl8139_initialize(bd_t *bis)
{
struct rtl8139_priv *priv;