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net: dm9000: Split non-DM specific bits from common code

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Split network handling functions into non-DM specific parts and
common code in preparation for conversion to DM.

Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Joe Hershberger <joe.hershberger@ni.com>
Cc: Ramon Fried <rfried.dev@gmail.com>
This commit is contained in:
Marek Vasut 2022-04-13 04:15:35 +02:00 committed by Ramon Fried
parent f0d1a29dc5
commit 85a7260186
1 changed files with 40 additions and 18 deletions
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58
drivers/net/dm9000x.c
View file

@ -311,9 +311,8 @@ static void dm9000_reset(struct dm9000_priv *db)
}
/* Initialize dm9000 board */
static int dm9000_init(struct eth_device *dev, struct bd_info *bd)
static int dm9000_init_common(struct dm9000_priv *db, u8 enetaddr[6])
{
struct dm9000_priv *db = container_of(dev, struct dm9000_priv, dev);
int i, oft, lnk;
u8 io_mode;
@ -371,13 +370,13 @@ static int dm9000_init(struct eth_device *dev, struct bd_info *bd)
/* Clear interrupt status */
dm9000_iow(db, DM9000_ISR, ISR_ROOS | ISR_ROS | ISR_PTS | ISR_PRS);
printf("MAC: %pM\n", dev->enetaddr);
if (!is_valid_ethaddr(dev->enetaddr))
printf("MAC: %pM\n", enetaddr);
if (!is_valid_ethaddr(enetaddr))
printf("WARNING: Bad MAC address (uninitialized EEPROM?)\n");
/* fill device MAC address registers */
for (i = 0, oft = DM9000_PAR; i < 6; i++, oft++)
dm9000_iow(db, oft, dev->enetaddr[i]);
dm9000_iow(db, oft, enetaddr[i]);
for (i = 0, oft = 0x16; i < 8; i++, oft++)
dm9000_iow(db, oft, 0xff);
@ -430,9 +429,8 @@ static int dm9000_init(struct eth_device *dev, struct bd_info *bd)
* Hardware start transmission.
* Send a packet to media from the upper layer.
*/
static int dm9000_send(struct eth_device *dev, void *packet, int length)
static int dm9000_send_common(struct dm9000_priv *db, void *packet, int length)
{
struct dm9000_priv *db = container_of(dev, struct dm9000_priv, dev);
int tmo;
dm9000_dump_packet(__func__, packet, length);
@ -471,10 +469,8 @@ static int dm9000_send(struct eth_device *dev, void *packet, int length)
* Stop the interface.
* The interface is stopped when it is brought.
*/
static void dm9000_halt(struct eth_device *netdev)
static void dm9000_halt_common(struct dm9000_priv *db)
{
struct dm9000_priv *db = container_of(dev, struct dm9000_priv, dev);
/* RESET device */
dm9000_phy_write(db, 0, 0x8000); /* PHY RESET */
dm9000_iow(db, DM9000_GPR, 0x01); /* Power-Down PHY */
@ -485,9 +481,8 @@ static void dm9000_halt(struct eth_device *netdev)
/*
* Received a packet and pass to upper layer
*/
static int dm9000_rx(struct eth_device *dev)
static int dm9000_recv_common(struct dm9000_priv *db)
{
struct dm9000_priv *db = container_of(dev, struct dm9000_priv, dev);
u8 rxbyte;
u8 *rdptr = (u8 *)net_rx_packets[0];
u16 rxstatus, rxlen = 0;
@ -570,18 +565,45 @@ static void dm9000_read_srom_word(struct dm9000_priv *db, int offset, u8 *to)
to[1] = dm9000_ior(db, DM9000_EPDRH);
}
static void dm9000_get_enetaddr(struct eth_device *dev)
static void dm9000_get_enetaddr(struct dm9000_priv *db, u8 *enetaddr)
{
struct dm9000_priv *db = container_of(dev, struct dm9000_priv, dev);
int i;
for (i = 0; i < 3; i++)
dm9000_read_srom_word(db, i, dev->enetaddr + (2 * i));
dm9000_read_srom_word(db, i, enetaddr + (2 * i));
}
#else
static void dm9000_get_enetaddr(struct eth_device *dev) {}
static void dm9000_get_enetaddr(struct dm9000_priv *db, u8 *enetaddr) {}
#endif
static int dm9000_init(struct eth_device *dev, struct bd_info *bd)
{
struct dm9000_priv *db = container_of(dev, struct dm9000_priv, dev);
return dm9000_init_common(db, dev->enetaddr);
}
static void dm9000_halt(struct eth_device *dev)
{
struct dm9000_priv *db = container_of(dev, struct dm9000_priv, dev);
dm9000_halt_common(db);
}
static int dm9000_send(struct eth_device *dev, void *packet, int length)
{
struct dm9000_priv *db = container_of(dev, struct dm9000_priv, dev);
return dm9000_send_common(db, packet, length);
}
static int dm9000_recv(struct eth_device *dev)
{
struct dm9000_priv *db = container_of(dev, struct dm9000_priv, dev);
return dm9000_recv_common(db);
}
int dm9000_initialize(struct bd_info *bis)
{
struct dm9000_priv *priv;
@ -597,12 +619,12 @@ int dm9000_initialize(struct bd_info *bis)
priv->base_data = (void __iomem *)DM9000_DATA;
/* Load MAC address from EEPROM */
dm9000_get_enetaddr(&priv->dev);
dm9000_get_enetaddr(priv, dev->enetaddr);
dev->init = dm9000_init;
dev->halt = dm9000_halt;
dev->send = dm9000_send;
dev->recv = dm9000_rx;
dev->recv = dm9000_recv;
strcpy(dev->name, "dm9000");
eth_register(&priv->dev);