diff options
Diffstat (limited to 'drivers/net/ethernet/dec/tulip/timer.c')
| -rw-r--r-- | drivers/net/ethernet/dec/tulip/timer.c | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/drivers/net/ethernet/dec/tulip/timer.c b/drivers/net/ethernet/dec/tulip/timer.c new file mode 100644 index 00000000000..2017faf2d0e --- /dev/null +++ b/drivers/net/ethernet/dec/tulip/timer.c @@ -0,0 +1,179 @@ +/* + drivers/net/tulip/timer.c + + Copyright 2000,2001 The Linux Kernel Team + Written/copyright 1994-2001 by Donald Becker. + + This software may be used and distributed according to the terms + of the GNU General Public License, incorporated herein by reference. + + Please refer to Documentation/DocBook/tulip-user.{pdf,ps,html} + for more information on this driver. + + Please submit bugs to http://bugzilla.kernel.org/ . +*/ + + +#include "tulip.h" + + +void tulip_media_task(struct work_struct *work) +{ + struct tulip_private *tp = + container_of(work, struct tulip_private, media_work); + struct net_device *dev = tp->dev; + void __iomem *ioaddr = tp->base_addr; + u32 csr12 = ioread32(ioaddr + CSR12); + int next_tick = 2*HZ; + unsigned long flags; + + if (tulip_debug > 2) { + netdev_dbg(dev, "Media selection tick, %s, status %08x mode %08x SIA %08x %08x %08x %08x\n", + medianame[dev->if_port], + ioread32(ioaddr + CSR5), ioread32(ioaddr + CSR6), + csr12, ioread32(ioaddr + CSR13), + ioread32(ioaddr + CSR14), ioread32(ioaddr + CSR15)); + } + switch (tp->chip_id) { + case DC21140: + case DC21142: + case MX98713: + case COMPEX9881: + case DM910X: + default: { + struct medialeaf *mleaf; + unsigned char *p; + if (tp->mtable == NULL) { /* No EEPROM info, use generic code. */ + /* Not much that can be done. + Assume this a generic MII or SYM transceiver. */ + next_tick = 60*HZ; + if (tulip_debug > 2) + netdev_dbg(dev, "network media monitor CSR6 %08x CSR12 0x%02x\n", + ioread32(ioaddr + CSR6), + csr12 & 0xff); + break; + } + mleaf = &tp->mtable->mleaf[tp->cur_index]; + p = mleaf->leafdata; + switch (mleaf->type) { + case 0: case 4: { + /* Type 0 serial or 4 SYM transceiver. Check the link beat bit. */ + int offset = mleaf->type == 4 ? 5 : 2; + s8 bitnum = p[offset]; + if (p[offset+1] & 0x80) { + if (tulip_debug > 1) + netdev_dbg(dev, "Transceiver monitor tick CSR12=%#02x, no media sense\n", + csr12); + if (mleaf->type == 4) { + if (mleaf->media == 3 && (csr12 & 0x02)) + goto select_next_media; + } + break; + } + if (tulip_debug > 2) + netdev_dbg(dev, "Transceiver monitor tick: CSR12=%#02x bit %d is %d, expecting %d\n", + csr12, (bitnum >> 1) & 7, + (csr12 & (1 << ((bitnum >> 1) & 7))) != 0, + (bitnum >= 0)); + /* Check that the specified bit has the proper value. */ + if ((bitnum < 0) != + ((csr12 & (1 << ((bitnum >> 1) & 7))) != 0)) { + if (tulip_debug > 2) + netdev_dbg(dev, "Link beat detected for %s\n", + medianame[mleaf->media & MEDIA_MASK]); + if ((p[2] & 0x61) == 0x01) /* Bogus Znyx board. */ + goto actually_mii; + netif_carrier_on(dev); + break; + } + netif_carrier_off(dev); + if (tp->medialock) + break; + select_next_media: + if (--tp->cur_index < 0) { + /* We start again, but should instead look for default. */ + tp->cur_index = tp->mtable->leafcount - 1; + } + dev->if_port = tp->mtable->mleaf[tp->cur_index].media; + if (tulip_media_cap[dev->if_port] & MediaIsFD) + goto select_next_media; /* Skip FD entries. */ + if (tulip_debug > 1) + netdev_dbg(dev, "No link beat on media %s, trying transceiver type %s\n", + medianame[mleaf->media & MEDIA_MASK], + medianame[tp->mtable->mleaf[tp->cur_index].media]); + tulip_select_media(dev, 0); + /* Restart the transmit process. */ + tulip_restart_rxtx(tp); + next_tick = (24*HZ)/10; + break; + } + case 1: case 3: /* 21140, 21142 MII */ + actually_mii: + if (tulip_check_duplex(dev) < 0) { + netif_carrier_off(dev); + next_tick = 3*HZ; + } else { + netif_carrier_on(dev); + next_tick = 60*HZ; + } + break; + case 2: /* 21142 serial block has no link beat. */ + default: + break; + } + } + break; + } + + + spin_lock_irqsave(&tp->lock, flags); + if (tp->timeout_recovery) { + tulip_tx_timeout_complete(tp, ioaddr); + tp->timeout_recovery = 0; + } + spin_unlock_irqrestore(&tp->lock, flags); + + /* mod_timer synchronizes us with potential add_timer calls + * from interrupts. + */ + mod_timer(&tp->timer, RUN_AT(next_tick)); +} + + +void mxic_timer(unsigned long data) +{ + struct net_device *dev = (struct net_device *)data; + struct tulip_private *tp = netdev_priv(dev); + void __iomem *ioaddr = tp->base_addr; + int next_tick = 60*HZ; + + if (tulip_debug > 3) { + dev_info(&dev->dev, "MXIC negotiation status %08x\n", + ioread32(ioaddr + CSR12)); + } + if (next_tick) { + mod_timer(&tp->timer, RUN_AT(next_tick)); + } +} + + +void comet_timer(unsigned long data) +{ + struct net_device *dev = (struct net_device *)data; + struct tulip_private *tp = netdev_priv(dev); + int next_tick = 60*HZ; + + if (tulip_debug > 1) + netdev_dbg(dev, "Comet link status %04x partner capability %04x\n", + tulip_mdio_read(dev, tp->phys[0], 1), + tulip_mdio_read(dev, tp->phys[0], 5)); + /* mod_timer synchronizes us with potential add_timer calls + * from interrupts. + */ + if (tulip_check_duplex(dev) < 0) + { netif_carrier_off(dev); } + else + { netif_carrier_on(dev); } + mod_timer(&tp->timer, RUN_AT(next_tick)); +} + |