diff options
Diffstat (limited to 'drivers/net/sky2.c')
| -rw-r--r-- | drivers/net/sky2.c | 33 |
1 files changed, 20 insertions, 13 deletions
diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c index ea11d510c4d7..71f7126e7915 100644 --- a/drivers/net/sky2.c +++ b/drivers/net/sky2.c @@ -700,8 +700,14 @@ static void sky2_mac_init(struct sky2_hw *hw, unsigned port) } /* Assign Ram Buffer allocation in units of 64bit (8 bytes) */ -static void sky2_ramset(struct sky2_hw *hw, u16 q, u32 start, u32 end) +static void sky2_ramset(struct sky2_hw *hw, u16 q, u32 start, u32 space) { + u32 end; + + start *= 1024/8; + space *= 1024/8; + end = start + space - 1; + pr_debug(PFX "q %d %#x %#x\n", q, start, end); sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_RST_CLR); @@ -1193,20 +1199,21 @@ static int sky2_up(struct net_device *dev) sky2_mac_init(hw, port); - /* Determine available ram buffer space in qwords. */ - ramsize = sky2_read8(hw, B2_E_0) * 4096/8; - - if (ramsize > 6*1024/8) - rxspace = ramsize - (ramsize + 2) / 3; - else - rxspace = ramsize / 2; + /* 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-1); - sky2_ramset(hw, txqaddr[port], rxspace, ramsize-1); + 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]); |