diff options
Diffstat (limited to 'drivers/net/sky2.c')
| -rw-r--r-- | drivers/net/sky2.c | 42 |
1 files changed, 18 insertions, 24 deletions
diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c index 67ecd66f26d..16616f5440d 100644 --- a/drivers/net/sky2.c +++ b/drivers/net/sky2.c @@ -10,8 +10,7 @@ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. + * the Free Software Foundation; either version 2 of the License. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of @@ -699,16 +698,10 @@ static void sky2_mac_init(struct sky2_hw *hw, unsigned port) } -/* Assign Ram Buffer allocation. - * 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) +/* Assign Ram Buffer allocation in units of 64bit (8 bytes) */ +static void sky2_ramset(struct sky2_hw *hw, u16 q, u32 start, u32 end) { - u32 start, end; - - start = startk * 4096/8; - end = (endk * 4096/8) - 1; + pr_debug(PFX "q %d %#x %#x\n", q, start, end); sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_RST_CLR); sky2_write32(hw, RB_ADDR(q, RB_START), start); @@ -717,7 +710,7 @@ 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 space = end - start + 1; u32 tp = space - space/4; /* On receive queue's set the thresholds @@ -1199,19 +1192,16 @@ 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); + /* Determine available ram buffer space in qwords. */ + ramsize = sky2_read8(hw, B2_E_0) * 4096/8; - /* Give transmitter one third (rounded up) */ - rxspace = ramsize - (ramsize + 2) / 3; + if (ramsize > 6*1024/8) + rxspace = ramsize - (ramsize + 2) / 3; + else + rxspace = ramsize / 2; - sky2_ramset(hw, rxqaddr[port], 0, rxspace); - sky2_ramset(hw, txqaddr[port], rxspace, ramsize); + sky2_ramset(hw, rxqaddr[port], 0, rxspace-1); + sky2_ramset(hw, txqaddr[port], rxspace, ramsize-1); /* Make sure SyncQ is disabled */ sky2_write8(hw, RB_ADDR(port == 0 ? Q_XS1 : Q_XS2, RB_CTRL), @@ -3248,7 +3238,11 @@ static __devinit struct net_device *sky2_init_netdev(struct sky2_hw *hw, dev->poll = sky2_poll; dev->weight = NAPI_WEIGHT; #ifdef CONFIG_NET_POLL_CONTROLLER - dev->poll_controller = sky2_netpoll; + /* Network console (only works on port 0) + * because netpoll makes assumptions about NAPI + */ + if (port == 0) + dev->poll_controller = sky2_netpoll; #endif sky2 = netdev_priv(dev); |