diff options
| -rw-r--r-- | drivers/net/sky2.c | 38 |
1 files changed, 18 insertions, 20 deletions
diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c index bc1d052f8f20..f0b192593191 100644 --- a/drivers/net/sky2.c +++ b/drivers/net/sky2.c @@ -670,12 +670,13 @@ static void sky2_mac_init(struct sky2_hw *hw, unsigned port) * start and end are in units of 4k bytes * ram registers are in units of 64bit words */ -static void sky2_ramset(struct sky2_hw *hw, u16 q, u8 startk, u8 endk) +static void sky2_ramset(struct sky2_hw *hw, u16 q, u32 start, u32 space) { - u32 start, end; + u32 end; - start = startk * 4096/8; - end = (endk * 4096/8) - 1; + start *= 1024/8; + space *= 1024/8; + end = start + space - 1; sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_RST_CLR); sky2_write32(hw, RB_ADDR(q, RB_START), start); @@ -684,7 +685,6 @@ static void sky2_ramset(struct sky2_hw *hw, u16 q, u8 startk, u8 endk) sky2_write32(hw, RB_ADDR(q, RB_RP), start); if (q == Q_R1 || q == Q_R2) { - u32 space = (endk - startk) * 4096/8; u32 tp = space - space/4; /* On receive queue's set the thresholds @@ -1081,23 +1081,21 @@ static int sky2_up(struct net_device *dev) sky2_mac_init(hw, port); - /* Determine available ram buffer space (in 4K blocks). - * Note: not sure about the FE setting below yet - */ - if (hw->chip_id == CHIP_ID_YUKON_FE) - ramsize = 4; - else - ramsize = sky2_read8(hw, B2_E_0); - - /* Give transmitter one third (rounded up) */ - rxspace = ramsize - (ramsize + 2) / 3; + /* Determine available ram buffer space (in 4K blocks). */ + ramsize = sky2_read8(hw, B2_E_0) * 4; + if (ramsize != 0) { + if (ramsize < 16) + rxspace = ramsize / 2; + else + rxspace = 8 + (2*(ramsize - 16))/3; - sky2_ramset(hw, rxqaddr[port], 0, rxspace); - sky2_ramset(hw, txqaddr[port], rxspace, ramsize); + sky2_ramset(hw, rxqaddr[port], 0, rxspace); + sky2_ramset(hw, txqaddr[port], rxspace, ramsize - rxspace); - /* Make sure SyncQ is disabled */ - sky2_write8(hw, RB_ADDR(port == 0 ? Q_XS1 : Q_XS2, RB_CTRL), - RB_RST_SET); + /* Make sure SyncQ is disabled */ + sky2_write8(hw, RB_ADDR(port == 0 ? Q_XS1 : Q_XS2, RB_CTRL), + RB_RST_SET); + } sky2_qset(hw, txqaddr[port]); |