diff options
Diffstat (limited to 'drivers/net/tulip/media.c')
| -rw-r--r-- | drivers/net/tulip/media.c | 40 |
1 files changed, 37 insertions, 3 deletions
diff --git a/drivers/net/tulip/media.c b/drivers/net/tulip/media.c index 20bd52b8699..b5625663654 100644 --- a/drivers/net/tulip/media.c +++ b/drivers/net/tulip/media.c @@ -44,8 +44,10 @@ static const unsigned char comet_miireg2offset[32] = { /* MII transceiver control section. Read and write the MII registers using software-generated serial - MDIO protocol. See the MII specifications or DP83840A data sheet - for details. */ + MDIO protocol. + See IEEE 802.3-2002.pdf (Section 2, Chapter "22.2.4 Management functions") + or DP83840A data sheet for more details. + */ int tulip_mdio_read(struct net_device *dev, int phy_id, int location) { @@ -261,24 +263,56 @@ void tulip_select_media(struct net_device *dev, int startup) u16 *reset_sequence = &((u16*)(p+3))[init_length]; int reset_length = p[2 + init_length*2]; misc_info = reset_sequence + reset_length; - if (startup) + if (startup) { + int timeout = 10; /* max 1 ms */ for (i = 0; i < reset_length; i++) iowrite32(get_u16(&reset_sequence[i]) << 16, ioaddr + CSR15); + + /* flush posted writes */ + ioread32(ioaddr + CSR15); + + /* Sect 3.10.3 in DP83840A.pdf (p39) */ + udelay(500); + + /* Section 4.2 in DP83840A.pdf (p43) */ + /* and IEEE 802.3 "22.2.4.1.1 Reset" */ + while (timeout-- && + (tulip_mdio_read (dev, phy_num, MII_BMCR) & BMCR_RESET)) + udelay(100); + } for (i = 0; i < init_length; i++) iowrite32(get_u16(&init_sequence[i]) << 16, ioaddr + CSR15); + + ioread32(ioaddr + CSR15); /* flush posted writes */ } else { u8 *init_sequence = p + 2; u8 *reset_sequence = p + 3 + init_length; int reset_length = p[2 + init_length]; misc_info = (u16*)(reset_sequence + reset_length); if (startup) { + int timeout = 10; /* max 1 ms */ iowrite32(mtable->csr12dir | 0x100, ioaddr + CSR12); for (i = 0; i < reset_length; i++) iowrite32(reset_sequence[i], ioaddr + CSR12); + + /* flush posted writes */ + ioread32(ioaddr + CSR12); + + /* Sect 3.10.3 in DP83840A.pdf (p39) */ + udelay(500); + + /* Section 4.2 in DP83840A.pdf (p43) */ + /* and IEEE 802.3 "22.2.4.1.1 Reset" */ + while (timeout-- && + (tulip_mdio_read (dev, phy_num, MII_BMCR) & BMCR_RESET)) + udelay(100); } for (i = 0; i < init_length; i++) iowrite32(init_sequence[i], ioaddr + CSR12); + + ioread32(ioaddr + CSR12); /* flush posted writes */ } + tmp_info = get_u16(&misc_info[1]); if (tmp_info) tp->advertising[phy_num] = tmp_info | 1; |