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sis900: add support for ethtool's EEPROM dump 

Implement ethtool's EEPROM dump command (ethtool -e|--eeprom-dump).

Thx to Andrew Lunn for comments.

Signed-off-by: Sergej Benilov <sergej.benilov@googlemail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sergej Benilov 2019-07-25 21:48:06 +02:00 committed by David S. Miller
parent 1fbf400b58
commit cd8ae20739
1 changed files with 68 additions and 0 deletions
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68
drivers/net/ethernet/sis/sis900.c
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@ -191,6 +191,8 @@ struct sis900_private {
unsigned int tx_full; /* The Tx queue is full. */
u8 host_bridge_rev;
u8 chipset_rev;
/* EEPROM data */
int eeprom_size;
};
MODULE_AUTHOR("Jim Huang <cmhuang@sis.com.tw>, Ollie Lho <ollie@sis.com.tw>");
@ -475,6 +477,8 @@ static int sis900_probe(struct pci_dev *pci_dev,
sis_priv->pci_dev = pci_dev;
spin_lock_init(&sis_priv->lock);
sis_priv->eeprom_size = 24;
pci_set_drvdata(pci_dev, net_dev);
ring_space = pci_alloc_consistent(pci_dev, TX_TOTAL_SIZE, &ring_dma);
@ -2122,6 +2126,68 @@ static void sis900_get_wol(struct net_device *net_dev, struct ethtool_wolinfo *w
wol->supported = (WAKE_PHY | WAKE_MAGIC);
}
static int sis900_get_eeprom_len(struct net_device *dev)
{
struct sis900_private *sis_priv = netdev_priv(dev);
return sis_priv->eeprom_size;
}
static int sis900_read_eeprom(struct net_device *net_dev, u8 *buf)
{
struct sis900_private *sis_priv = netdev_priv(net_dev);
void __iomem *ioaddr = sis_priv->ioaddr;
int wait, ret = -EAGAIN;
u16 signature;
u16 *ebuf = (u16 *)buf;
int i;
if (sis_priv->chipset_rev == SIS96x_900_REV) {
sw32(mear, EEREQ);
for (wait = 0; wait < 2000; wait++) {
if (sr32(mear) & EEGNT) {
/* read 16 bits, and index by 16 bits */
for (i = 0; i < sis_priv->eeprom_size / 2; i++)
ebuf[i] = (u16)read_eeprom(ioaddr, i);
ret = 0;
break;
}
udelay(1);
}
sw32(mear, EEDONE);
} else {
signature = (u16)read_eeprom(ioaddr, EEPROMSignature);
if (signature != 0xffff && signature != 0x0000) {
/* read 16 bits, and index by 16 bits */
for (i = 0; i < sis_priv->eeprom_size / 2; i++)
ebuf[i] = (u16)read_eeprom(ioaddr, i);
ret = 0;
}
}
return ret;
}
#define SIS900_EEPROM_MAGIC 0xBABE
static int sis900_get_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom, u8 *data)
{
struct sis900_private *sis_priv = netdev_priv(dev);
u8 *eebuf;
int res;
eebuf = kmalloc(sis_priv->eeprom_size, GFP_KERNEL);
if (!eebuf)
return -ENOMEM;
eeprom->magic = SIS900_EEPROM_MAGIC;
spin_lock_irq(&sis_priv->lock);
res = sis900_read_eeprom(dev, eebuf);
spin_unlock_irq(&sis_priv->lock);
if (!res)
memcpy(data, eebuf + eeprom->offset, eeprom->len);
kfree(eebuf);
return res;
}
static const struct ethtool_ops sis900_ethtool_ops = {
.get_drvinfo = sis900_get_drvinfo,
.get_msglevel = sis900_get_msglevel,
@ -2132,6 +2198,8 @@ static const struct ethtool_ops sis900_ethtool_ops = {
.set_wol = sis900_set_wol,
.get_link_ksettings = sis900_get_link_ksettings,
.set_link_ksettings = sis900_set_link_ksettings,
.get_eeprom_len = sis900_get_eeprom_len,
.get_eeprom = sis900_get_eeprom,
};
/**