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net: dm9000: Add DM support

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Add support for U-Boot DM and DT probing.

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 04:15:37 +02:00
committed by Ramon Fried
parent 84bf20f6ce
commit 41e10bea31
1 changed files with 118 additions and 0 deletions
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118
drivers/net/dm9000x.c
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@@ -51,6 +51,7 @@
#include <common.h>
#include <command.h>
#include <dm.h>
#include <malloc.h>
#include <net.h>
#include <asm/io.h>
@@ -74,7 +75,9 @@ struct dm9000_priv {
void (*outblk)(struct dm9000_priv *db, void *data_ptr, int count);
void (*inblk)(struct dm9000_priv *db, void *data_ptr, int count);
void (*rx_status)(struct dm9000_priv *db, u16 *rxstatus, u16 *rxlen);
#ifndef CONFIG_DM_ETH
struct eth_device dev;
#endif
void __iomem *base_io;
void __iomem *base_data;
};
@@ -569,6 +572,7 @@ static void dm9000_get_enetaddr(struct dm9000_priv *db, u8 *enetaddr)
static void dm9000_get_enetaddr(struct dm9000_priv *db, u8 *enetaddr) {}
#endif
#ifndef CONFIG_DM_ETH
static int dm9000_init(struct eth_device *dev, struct bd_info *bd)
{
struct dm9000_priv *db = container_of(dev, struct dm9000_priv, dev);
@@ -629,3 +633,117 @@ int dm9000_initialize(struct bd_info *bis)
return 0;
}
#else /* ifdef CONFIG_DM_ETH */
static int dm9000_start(struct udevice *dev)
{
struct dm9000_priv *db = dev_get_priv(dev);
struct eth_pdata *pdata = dev_get_plat(dev);
return dm9000_init_common(db, pdata->enetaddr);
}
static void dm9000_stop(struct udevice *dev)
{
struct dm9000_priv *db = dev_get_priv(dev);
dm9000_halt_common(db);
}
static int dm9000_send(struct udevice *dev, void *packet, int length)
{
struct dm9000_priv *db = dev_get_priv(dev);
int ret;
ret = dm9000_send_common(db, packet, length);
return ret ? 0 : -ETIMEDOUT;
}
static int dm9000_recv(struct udevice *dev, int flags, uchar **packetp)
{
struct dm9000_priv *db = dev_get_priv(dev);
uchar *data = net_rx_packets[0];
int ret;
ret = dm9000_recv_common(db, data);
if (ret)
*packetp = (void *)data;
return ret ? ret : -EAGAIN;
}
static int dm9000_write_hwaddr(struct udevice *dev)
{
struct dm9000_priv *db = dev_get_priv(dev);
struct eth_pdata *pdata = dev_get_plat(dev);
int i, oft;
/* fill device MAC address registers */
for (i = 0, oft = DM9000_PAR; i < 6; i++, oft++)
dm9000_iow(db, oft, pdata->enetaddr[i]);
for (i = 0, oft = 0x16; i < 8; i++, oft++)
dm9000_iow(db, oft, 0xff);
/* read back mac, just to be sure */
for (i = 0, oft = 0x10; i < 6; i++, oft++)
debug("%02x:", dm9000_ior(db, oft));
debug("\n");
return 0;
}
static int dm9000_read_rom_hwaddr(struct udevice *dev)
{
struct dm9000_priv *db = dev_get_priv(dev);
struct eth_pdata *pdata = dev_get_plat(dev);
dm9000_get_enetaddr(db, pdata->enetaddr);
return !is_valid_ethaddr(pdata->enetaddr);
}
static int dm9000_bind(struct udevice *dev)
{
return device_set_name(dev, dev->name);
}
static int dm9000_of_to_plat(struct udevice *dev)
{
struct dm9000_priv *db = dev_get_priv(dev);
struct eth_pdata *pdata = dev_get_plat(dev);
pdata->iobase = dev_read_addr_index(dev, 0);
db->base_io = (void __iomem *)pdata->iobase;
db->base_data = (void __iomem *)dev_read_addr_index(dev, 1);
return 0;
}
static const struct eth_ops dm9000_ops = {
.start = dm9000_start,
.stop = dm9000_stop,
.send = dm9000_send,
.recv = dm9000_recv,
.write_hwaddr = dm9000_write_hwaddr,
.read_rom_hwaddr = dm9000_read_rom_hwaddr,
};
static const struct udevice_id dm9000_ids[] = {
{ .compatible = "davicom,dm9000" },
{ }
};
U_BOOT_DRIVER(dm9000) = {
.name = "eth_dm9000",
.id = UCLASS_ETH,
.of_match = dm9000_ids,
.bind = dm9000_bind,
.of_to_plat = dm9000_of_to_plat,
.ops = &dm9000_ops,
.priv_auto = sizeof(struct dm9000_priv),
.plat_auto = sizeof(struct eth_pdata),
.flags = DM_FLAG_ALLOC_PRIV_DMA,
};
#endif